Change make license

[platform/upstream/make.git] / ChangeLog

2020-01-19  Paul Smith  <psmith@gnu.org>

        GNU Make release 4.3
        * NEWS: Update for the release
        * configure.ac: New release number
        * doc/make.texi: New edition number

        * configure.ac (guile): Check for Guile 3.0 installations

        * src/job.c (sh_cmds): [SV 57625] Update builtin shell command list

        Resolve some documentation issues
        * doc/make.texi (Interrupts): [SV 46193] Recommend defensive recipes
        * doc/make.texi: [SV 49262] Clarify interaction of prerequisites and
        non-terminal match-anything rules.

2020-01-19  Paul Smith  <psmith@gnu.org>

        [SV 40657] Reinstate old behavior for suffix rules with prereqs
        POSIX says that suffix rules cannot have prerequisites, but after
        making this change we observed a number of makefiles "in the wild"
        that were relying on this behavior and failed.

        For .POSIX: makefiles, obey POSIX.  Otherwise preserve the old
        behavior.  However, generate a warning so users know this is a
        problem.  In a future version we will change all behavior to be
        POSIX-conforming.

        * NEWS: describe the change
        * src/rule.c (convert_to_pattern): If posix_pedantic don't make a
        pattern rule if prereqs exist.  Otherwise show a warning.
        * tests/scripts/features/suffixrules: Add tests for the new behavior
        including .POSIX vs. non-.POSIX.

2020-01-05  Dmitry Goncharov  <dgoncharov@users.sf.net>

        * tests/test_driver.pl: Enhance error messages

2020-01-04  Paul Smith  <psmith@gnu.org>

        * doc/make.texi: Change the GFDL to an Appendix

        * NEWS: Clarify authorship of new features.

        Enable compilation with C90 compilers
        * configure.ac: Try compiling Guile headers: they don't work with C90.
        * maintMakefile: Simplify config checks via target-specific variables.
        * src/makeint.h: Use ATTRIBUTE rather than defining __attribute__,
        as that causes compile issues with system headers.
        (ENUM_BITFIELD): Don't use enum bitfields in ANSI mode.
        * src/main.c: Use ATTRIBUTE instead of __attribute__.
        * src/job.h: Ditto.
        * src/file.c: Don't define variables inside for loops.
        * src/rule.c: Ditto.
        * src/dep.h (SI): Only use static inline in non-ANSI mode.

2020-01-03  Paul Smith  <psmith@gnu.org>

        * bootstrap: Update to the latest gnulib version

        Release GNU make 4.2.93
        * NEWS: Update the release and date
        * configure.ac: Update the release number

        Update copyright statements for 2020

2020-01-03  Paul Smith  <psmith@gnu.org>

        Support the .EXTRA_PREREQS special variable
        Initial implementation by Christof Warlich <cwarlich@gmx.de>

        * NEWS: Announce the new feature.
        * doc/make.texi (Other Special Variables): Document .EXTRA_PREREQS.
        * src/dep.h (struct dep): New flag to note extra prereq deps.
        * src/filedef.h (expand_extra_prereqs): Declare a function to expand
        the value of .EXTRA_PREREQS.
        * src/file.c (expand_extra_prereqs): Given a struct variable lookup
        of .EXTRA_PREREQS, convert it into a list of deps and for each one
        make sure it has a struct file and has the new flag set.
        (snap_file): A new function invoked by hash_map that will perform
        per-file operations: set up second expansion, intermediate, and also
        .EXTRA_PREREQS.  Manage circular dependencies by ignoring them.
        (snap_deps): Defer per-file operations until the end.  Look up the
        global .EXTRA_PREREQS and pass it along to snap_file for each file.
        * src/implicit.c (struct patdeps): Remember the extra prereqs flag.
        (pattern_search): Transfer extra prereqs flag settings into the
        matched pattern rule.
        * src/rule.h (snap_implicit_rules): Rename count_implicit_rules to
        snap_implicit_rules since we now do more than count.
        * src/rule.c (snap_implicit_rules): As we walk through all the pattern
        rules, add in any global .EXTRA_PREREQS to the dep list.  Ensure we
        take them into account for the max number of prereqs and name length.
        * src/main.c (main): Add extra-prereqs to .FEATURES.
        Call the renamed snap_implicit_rules.
        * tests/scripts/variables/EXTRA_PREREQS: Add tests.

2020-01-03  Paul Smith  <psmith@gnu.org>

        * tests/scripts/features/patternrules: Use Windows-compatible quoting

        * tests/test_driver.pl: Compute full path to Perl interpreter

        * tests/scripts/features/exec: Don't use $ENV in the description

        * src/makeint.h: Add a declaration for memrchr()

2019-12-27  Paul Smith  <psmith@gnu.org>

        * NEWS: Remove info about disabled /proc/loadavg usage.

2019-12-27  Paul Smith  <psmith@gnu.org>

        [SV 57022] Avoid posix_spawn which fails asynchronously
        Avoid using posix_spawn implementations that fail asynchronously when
        the spawned program can't be invoked: this means instead of getting
        an error such as "No such file or directory" we get just "Exit 127".

        Original implementation of the configure.ac macro provided by
        Martin Dorey <martin.dorey@hds.com>

        Original implementation of the regression tests provided by
        Dmitry Goncharov <dgoncharov@users.sf.net>

        * configure.ac: Test whether posix_spawn fails asynchronously.  In a
        cross-compilation environment, assume that it does not.  If we detect
        that it does, fall back to fork/exec.
        * tests/scripts/features/exec: Add regression tests for different
        shebang invocation methods.

2019-12-26  Paul Smith  <psmith@gnu.org>

        [SV 56655] Allow pattern expansion to contain spaces
        * src/dep.h: Add a new flag PARSEFS_ONEWORD
        * src/read.c (parse_file_seq): If PARSEFS_ONEWORD is given, treat the
        entire incoming string as a single pattern.
        * src/implicit.c (pattern_search): Pass PARSEFS_ONEWORD when parsing
        patterns for wildcards.
        * tests/scripts/features/patternrules: Add a new test.

2019-12-18  Ben Wijen  <ben@wijen.net>

        * src/misc.c (spin): On WINDOWS32 use Sleep() instead of sleep()

        * bootstrap.bat: Fix typo in batch file name

2019-12-18  Paul Smith  <psmith@gnu.org>

        * src/config.h.W32.template: [SV 57152] MinGW32 doesn't support d_type

2019-12-18  Jouke Witteveen  <j.witteveen@gmail.com>

        [SV 54161] Fix second expansion of $* for paths
        If the stem matches a path containing a directory not just a
        filename, make sure the second expansion of $* in the
        prerequisites matches $* in the recipe.  This requires using
        $(*F) when replacing % in the first expansion to preserve the
        simple filename.

        * src/implicit.c (pattern_search): If lastslash is set prepend
        the directory onto the stem.  Then use $(*F) when expanding %.
        * tests/scripts/features/se_implicit: Add a test case

2019-12-17  Jouke Witteveen  <j.witteveen@gmail.com>

        * src/implicit.c (pattern_search): Set lastslash correctly
        If filename contained multiple slashes lastslash is wrongly set to 0.
        * configure.ac: Check for the GNU memrchr() extension function.
        * src/misc.c (memrchr): Supply memrchr() if not available.

        * src/implicit.c (pattern-search): Remove unneeded 'dir' variable

2019-12-17  Paul Smith  <psmith@gnu.org>

        * Makefile.am: Build lzip package instead of bzip2
        * README.git: Mention changed requirements.

        * src/job.c (load_too_high): Disable Linux /proc/loadavg for now
        This new feature has a problem: if you provide a load which is
        larger than the number of cores then it will always run every job.
        Before we can enable it we need to at the least learn how to clamp
        this value to the number of cores.  To experiment with it, set
        PROC_FD_INIT to -2 in job.c to re-enable the feature.

        * tests/run_make_tests.pl (set_more_defaults): Fix typo

2019-12-16  Paul Smith  <psmith@gnu.org>

        * tests/run_make_tests.pl (subst_make_string): Force use of /
        On Windows the path to the helper tool will contain '\': this will
        fail if recipes are run with a POSIX shell.  Convert '\' to '/'
        on Windows.  While here, escape any spaces in the path as well.

        Rename jhelp.pl to thelp.pl and make it a generic test helper.
        * tests/thelp.pl: Rename from tests/jhelp.pl.
        (op): Use names instead of options for the operations.
        (op): Add new operations for sleep, mkdir, and rm.
        (op): Enhance wait to time out
        * tests/run_make_tests.pl: Add a new #HELPER# replacement
        (subst_make_string): Use fully-qualified path to thelp.pl
        * tests/scripts/features/parallelism: Update to use thelp.pl
        and the new named operations.  Use thelp.pl sleep instead of
        system-specific sleep commands.
        * tests/scripts/features/output-sync: Update to use thelp.pl
        instead of complex shell scripts.
        * Makefile.am: Distribute tests/thelp.pl instead of tests/jhelp.pl

2019-10-10  Paul Eggert  <eggert@cs.ucla.edu>

        Port functions/shell test to Solaris 10
        * tests/scripts/functions/shell: Port exit-status calculation
        to Solaris 10 with Perl 5.8.4.

2019-10-08  Paul Smith  <psmith@gnu.org>

        Release GNU make 4.2.92
        * NEWS: Update the release and date
        * configure.ac: Update the release number

2019-10-06  Paul Smith  <psmith@gnu.org>

        * doc/make.text (Reading Makefiles): Rewrite to be more clear.

2019-10-05  Paul Smith  <psmith@gnu.org>

        * Makefile.am (check-regression): Use PERLFLAGS when running Perl
        * maintMakefile: Set PERLFLAGS to enable warnings.
        * tests/run_make_tests.pl: Clean up issues pointed out by perl -w.

        * tests/scripts/functions/wildcard: Skip slash tests for local glob.

        tests: Convert %CONFIG_FLAGS to get_config()
        * tests/config-flags.pm.W32: Create a predefined Windows file.
        * Makefile.am (test_FILES): Add it to the distribution.
        * build_w32.bat: Install tests/config-flags.pm if not existing.
        * tests/run_make_tests.pl (get_config): Create new function.
        * tests/scripts/features/archives: Call get_config() rather than
        using %CONFIG_FLAGS directly.
        * tests/scripts/features/load: Ditto.
        * tests/scripts/features/loadapi: Ditto.
        * tests/scripts/functions/wildcard: Ditto.

        * src/hash.c (jhash_string): Don't read past end of string.
        Original patch from Dmitry Goncharov <dgoncharov@users.sf.net>.

        * tests/run_make_tests.pl (valid_option): Add missing File::Spec

2019-09-23  Paul Smith  <psmith@gnu.org>

        * src/function.c (func_realpath) [AIX]: Remove trailing slashes.

2019-09-22  Paul Smith  <psmith@gnu.org>

        * tests/scripts/features/vpathplus: Fix output for big-endian systems.
        Our hashing algorithm gives different ordering on LE vs BE systems.
        Patch from Dmitry Goncharov <dgoncharov@users.sf.net>.

2019-09-22  Florian Weimer  <fweimer@redhat.com>  (tiny change)

        * configure.ac (HAVE_GETTIMEOFDAY): Avoid undeclared exit function.

2019-09-22  Paul Smith  <psmith@gnu.org>

        * test/test_driver.el (_run_with_timeout): Show error message.

        * job.c (child_error): Modify error message string.
        This reverts commit 6264deece3bb77798240a906ceed79097adbcf48.
        Further investigation discovers that the real issue is that
        GNU Emacs compile mode doesn't have a matching regex for GNU
        make error messages generated when targets fail.  I submitted
        a patch to GNU Emacs adding a matcher for compile mode.

2019-09-21  Paul Smith  <psmith@gnu.org>

        * tests: Convert from File::Spec::Functions to File::Spec.
        Users report the Functions version doesn't work correctly for some
        older versions of Perl.

        * tests/scripts/function/guile: Valgrind doesn't work with Guile.

        * src/job.c (child_execute_job): Allocate space for argv NULL.

2019-09-21  Paul Smith  <psmith@gnu.org>

        [SV 56918] Compute job slots properly on failing command
        Ensure we properly reduce job_slots_used if a command fails because
        it doesn't exist/can't be started.

        * src/job.h (struct child): Add a field jobslot to be set when using
        a job slot.
        * src/job.c (start_waiting_job): Remember if we are using a job slot.
        (reap_children): Reduce number of job slots used by jobslot.

2019-09-21  Paul Smith  <psmith@gnu.org>

        * src/arscan.c (ar_scan): Restrict length for sscanf of ar_mode.

        * tests/scripts/functions/shell: Detect correct SHELLSTATUS code.

        * tests/run_make_test.pl: Fix support for valgrind.
        Change the variable holding the make command to be a list that can
        hold extra commands and options, not just a string.

        * tests/run_make_tests.pl (find_prog): Fix syntax error.

2019-09-16  Paul Smith  <psmith@gnu.org>

        * NEWS: Update date and clarify -l change.

        * tests/run_make_tests.pl: Create $scriptsuffix for Windows/VMS.
        * tests/scripts/features/targetvars: Add a suffix to scripts.
        * tests/scripts/misc/general4: Ditto.

2019-09-16  Paul Smith  <psmith@gnu.org>

        Refresh the test suite framework implementation.
        Go through both run_make_tests.pl and test_driver.pl and slightly
        modernize the Perl and clean up indentation etc.  Fix a number of
        warnings in the test scripts detected by running with -w.

        * tests/test_driver.pl: Move make error string detection out of the
        base test driver.
        (run_all_tests): Ensure that we always look for tests in the cwd.
        * tests/run_make_tests.pl: Use File::Spec for path manipulations.
        Correctly use setlocale() when detecting error strings.
        Get configuration from the config-flags.pm file not config.status.
        * tests/scripts/features/archives: Use new $cwddir variable.
        * tests/scripts/features/reinvoke: Add missing semicolon.
        * tests/scripts/features/vpath2: Avoid non-existent variable.
        * tests/scripts/functions/foreach: Escape variables.
        * tests/scripts/misc/bs-nl: Remove non-existing \v escape sequence.
        * tests/scripts/misc/general4: Use handy create_file().
        * tests/scripts/options/dash-C: Use Cwd/$cwddir.
        * tests/scripts/options/dash-I: Use subst_make_string() and #PWD#.
        * tests/scripts/options/symlinks: Use File::Spec.
        * tests/scripts/targets/DEFAULT: Use create_file and run_make_test.
        * tests/scripts/variables/CURDIR: Use run_make_test.
        * tests/scripts/variables/automatic: Remove extraneous "\".
        * tests/scripts/vms/library: Remove extra "my" and extraneous "\".

2019-09-16  Paul Smith  <psmith@gnu.org>

        * tests/config-flags.pm.in: Add USE_SYSTEM_GLOB.
        * tests/config_flags_pm.com [VMS]: Ditto.

        * README.git: [SV 56895] Provide more info about "maintainer mode".
        * src/read.c (get_next_mword) [HAVE_DOS_PATHS]: Don't fall through to
        parsing variable references if we find a drivespec in a word!

        * tests/test_driver.pl: Remember error for "running" a directory.
        * tests/scripts/features/errors: Check errors "running" a directory.

        * src/job.c (child_execute_job): Use errno from find_in_given_path().
        * tests/test_driver.pl: Determine non-executable error message.
        * tests/scripts/features/errors: Use the local non-executable error.

        * src/job.c (child_execute_job): Use newer gnulib findprog version.

2019-09-10  Eli Zaretskii  <eliz@gnu.org>

        Revert "[SV 56449] (Windows) Use slow path if '%' appears in the command"
        This reverts commit 38e96eadea6e2cd42a0f414959bac327de9f468a.
        Per discussion on Savannah, the modified behavior matches
        the way % is handled in batch files, but not in cmd command
        lines.  And since Make mostly tries to emulate the command
        line, the new behavior is unexpected and backward-incompatible.

2019-09-09  Paul Smith  <psmith@gnu.org>

        Rework the creation of build.sh so it's not a template.
        * build.sh: Rename from build.template.  Get the list of objects
        from the Makefile.  Move configure-replaced variables ...
        * build.cfg.in: to this new .in file.
        * configure.ac: Remove special handling of build.sh.in and add
        build.cfg as a generated file.
        * Makefile.am (EXTRA_DIST): Remove build.sh.in and add build.sh
        and build.cfg.in for build.sh.in.
        * maintMakefile: Remove handling for build.template.  Treat
        build.sh as a source file, not a generated file.
        * .gitignore: Ignore generated build.cfg file.

2019-09-08  Paul Smith  <psmith@gnu.org>

        * gl/modules/make-glob: Move local glob configure.ac to here
        * configure.ac: from here.

2019-09-08  Paul Smith  <psmith@gnu.org>

        [SV 56834] Support local PATH search with posix_spawnp
        When using exec we install the child's environment before invoking
        execlp(), so commands are found on the child's PATH.  posix_spawnp
        searches on the parent's PATH, which we don't want.

        Import gnulib's findprog-in module and use it to search the child's
        PATH, then use posix_spawn() to run it.

        Also, posix_spawn() does not fall back to trying sh on ENOEXEC, as
        execlp() does, so implement that as well.

        * bootstrap.conf: Add the findprog-in gnulib module
        * src/job.c: Include findprog.h if we're using posix_spawn.
        (start_job_command): Remove the handling of child->cmd_name,
        (child_execute_job): and add it here.  Look up the command to be
        run in the child's path and invoke it if found.  If it fails with
        ENOEXEC then retry it as an argument to the default shell.
        * tests/scripts/misc/general4: Test makefile PATH assignments.
        * tests/scripts/features/targetvars: Ditto, for target variables.

2019-09-07  Paul Smith  <psmith@gnu.org>

        * doc/make.texi (Recipe Execution): Correct example to use $(<[DF])

        * configure.ac: Check whether struct dirent has a d_type field
        * src/dir.c (dir_contents_file_exists_p): Use the autoconf macro
        HAVE_STRUCT_DIRENT_D_TYPE rather than relying on the GNU libc-
        specific _DIRENT_HAVE_D_TYPE.
        * lib/glob.c: Set HAVE_D_TYPE if HAVE_STRUCT_DIRENT_D_TYPE.

        * src/config.h.W32.template [W32]: Add support for dirent.d_type
        * src/w32/include/dirent.h: Add DT_* values for dirent.d_type
        (struct dirent): Add d_type
        * src/w32/compat/durent.c (readdir): Set dirent.d_type based on
        Windows file attributes.

        * src/makeint.h: Add typedef for mode_t if !HAVE_UMASK

        * build.template: Rewrite to allow gnulib support.

        * doc/make.texi: Clarify that the jobserver pipe is "blocking"

2019-09-07  Paul Smith  <psmith@gnu.org>

        Align child_execute_job among different ports
        Create a struct childbase which is the basics of struct child needed
        to invoke child_execute_job(), and can be cast back and forth to a
        struct child.  Ensure all implementations of child_execute_job() take
        the same arguments.

        * src/job.h (CHILDBASE): Create a macro to hold the base parts.
        (struct childbase): A structure containing CHILDBASE.
        (struct child): Use CHILDBASE as the initial part of child.
        [VMS]: Remove declaration of VMS version of child_execute_job.
        * src/job.c (start_job_command): Use new child_execute_job() call.
        (child_execute_job) [__EMX__]: Implement new calling signature.
        (child_execute_job): Implement new calling signature.
        * src/main.c (main) [__EMX__]: Use new child_execute_job() call.
        * src/function.c (func_shell_base): Use new child_execute_job() call.
        * src/vmsjobs.c (vmsHandleChildTerm): Accept struct childbase.
        * src/vmsjobs.c (child_execute_job): Implement new calling signature.
        Modify the return value to be pid_t, not a boolean, and return the
        PID rather than setting it in the child.  This is OK because our only
        caller immediately reset PID to -1 anyway if we return 0.

2019-09-07  Paul Smith  <psmith@gnu.org>

        * doc/make.tex (Substitution Refs): Clarify patsubst relationship.

        * src/job.c (start_job_command) [VMS]: Correct VMS comment.

2019-09-07  Paul Smith  <psmith@gnu.org>

        Show useful errors when posix_spawn() doesn't do so
        The posix_spawn() function may not detect that the command to run is
        invalid when it's invoked.  Instead, it will run then exit with
        error code 127.  If that happens do our best to present the user
        with a useful error message.

        * src/job.h (struct child): Add cmd_name to hold the command we ran.
        * src/job.c (start_job_command): On success, remember the cmd_name.
        (reap_children): On exit 127, stat cmd_name and show a useful error.
        (free_child): Free cmd_name.

2019-09-07  Paul Smith  <psmith@gnu.org>

        * README.git: Describe GCC and GNU make requirements
        * maintMakefile: Put custom C flags into a separate variable
        so they can be overridden more easily on the command line.

        * tests/scripts/features/archives: Fix expected long ar name output.

        * tetss/run_make_test.pl: Avoid 'sh -c' for Windows portability.

        Update to GNU make release candidate 4.2.91

        * tests/scripts/functions/wildcard: Skip dangling symlink test.
        The built-in glob implementation does not correctly handle dangling
        symlinks.  This needs to be fixed by switching to the latest glob
        implementation from gnulib but that's a big job: for now avoid the
        test if we know it will fail.

        * maintMakefile: Use check-local when testing build.sh.
        Running 'make check' will rebuild 'make' so we're not testing the
        build.sh-generated make binary.

2019-09-07  Paul Smith  <psmith@gnu.org>

        Don't reset stack size when using posix_spawn()
        There's no way to run setrlimit() from posix_spawn() so we can't reset
        the stack limit in children; thus, don't change it in the parent.

        * src/makeint.h (SET_STACK_SIZE): Don't set this when HAVE_POSIX_SPAWN.
        * src/job.c (child_execute_job): Remove useless comment.

2019-09-07  Paul Smith  <psmith@gnu.org>

        * configure.ac: Remove redundant getloadavg gnulib support

        * src/dir.c (dir_setup_glob): Initialize unused gl_offs.
        * tests/scripts/functions/wildcard: Add trailing slash tests.
        Initial changes by Dmitry Goncharov <dgoncharov@users.sf.net>

2019-09-02  Paul Eggert  <eggert@cs.ucla.edu>

        Pacify Oracle Studio c99
        * src/dep.h (DEP):
        * src/function.c (struct function_table_entry):
        Use unsigned int, not unsigned short.  Without this patch, c99
        complains ‘warning: nonportable bit-field type’.

        Port grouped_targets test to Solaris 10
        * tests/scripts/features/grouped_targets: Use ‘printf ''’
        instead of ‘echo -n’, as POSIX says the latter is not portable.

        Remove useless code in eval
        * src/read.c (eval): Remove useless code.  Without this patch,
        Oracle Studio 12.6 complains ‘"src/read.c", line 1405: warning:
        loop not entered at top’.

        Pacify Oracle Studio 12.6 in init_switches
        * src/main.c (init_switches): Use a cast to convert char const *
        to char *.  Without this patch, the compiler complains
        ‘"src/main.c", line 2643: warning: assignment type mismatch:
        pointer to char "=" pointer to const char’.

        Pacify Oracle Studio 12.6
        * src/arscan.c [VMS]: Use ‘#if !defined LBR$_HDRTRUNC’ instead
        of ‘#ifndef LBR$_HDRTRUNC’ to pacify Oracle Studio 12.6, which
        looks inside unused #if branches for preprocessor syntax errors.
        Without this patch it complains ‘"src/arscan.c", line 43: warning:
        tokens ignored at end of directive line’.

2019-09-02  Paul Smith  <psmith@gnu.org>

        * NEWS: Fix incorrect notes.

        * src/read.c (parse_file_seq): [SV 52076] Don't reverse glob() results.

2019-08-28  Eli Zaretskii  <eliz@gnu.org>

        Fix MS-Windows MinGW build
        * src/w32/subproc/sub_proc.c (process_wait_for_multiple_objects):
        Fix format specifier for GetLastError's value.

        * src/job.c (reap_children): Define the 'remote_status_lose' label
        only for Posix platforms, to avoid compiler warning.

        * build_w32.bat (LNKOUT): New variable, using forward slashes.
        Use forward slashes in calls to :Compile, so that linking with GNU
        ld works.

        * src/makeint.h [!HAVE_UMASK]: Prototype for 'umask'.
        (UMASK, MODE_T): Don't define.

        * src/misc.c (get_tmpfile): Don't call UMASK, call umask, to
        avoid compilation warning on !HAVE_UMASK platforms.
        * src/output.c (output_tmpfd): Likewise.

        * src/misc.c (umask) [!HAVE_UMASK]: New no-op function.

        * src/config.h.W32.template (__USE_MINGW_ANSI_STDIO)
        [__MINGW32__]: Define to 1, to force Make use ANSI-compatible
        stdio functions, which also support the non-standard 'Id' and 'Ix'
        specifiers.
        (HAVE_UMASK) [__MINGW32__]: Define to 1.

        * src/arscan.c (ar_member_touch): Type-cast argument of strlen to
        avoid compiler warnings.

2019-08-26  Paul Smith  <psmith@gnu.org>

        * NEWS: Update for pre-release

2019-08-26  Paul Smith  <psmith@gnu.org>

        Update maintainer mode to support debug wait points.
        Make a spin() method available when compiled in maintainer mode.
        If a file exists in the working directory with a specific name,
        make will sleep until the file is deleted.

        Ensure that maintainer mode is enabled on Windows, using the same
        algorithm we use on POSIX / autoconf systems.

        * build_w32.bat: If maintMakefile exists, enable maintainer mode.
        * src/main.c (main): Replace Windows-only suspend flag with spin().
        * src/makeint.h: A SPIN() macro calls spin() in maintainer mode.
        * src/misc.c (spin): If a spin file exists sleep until it's deleted.

2019-08-26  Paul Smith  <psmith@gnu.org>

        * tests/scripts/features/archives: [SV 54395] Support non-GNU ar.

        * tests/scripts/misc/general3: Add more tests for SHELL/.SHELLFLAGS

2019-08-25  Paul Smith  <psmith@gnu.org>

        * src/job.c (construct_command_argv): Remove unused VMS code

        * src/job.c (child_execute_job): Set pid to -1 on posix_spawn failure.

2019-08-24  Paul Smith  <psmith@gnu.org>

        * bootstrap: Update from latest gnulib version

        * scripts/copyright-update: Use git ls-files for controlled files

        * po/LINGUAS: Add a translation for Bulgarian.

2019-07-14  Christian Eggers  <ceggers@arri.de>  (tiny change)

        [SV 56449] (Windows) Use slow path if '%' appears in the command
        * src/job.c (sh_chars_dos): Add '%' as a special character
        * src/job.c (construct_command_argv_internal): Check for '%' in quotes

        For the windows version of make, a recipe line cannot be executed
        diretly by make (without a shell) if a '%' character is present. This
        character starts a cmd.exe escape sequence.

2019-07-14  Paul Smith  <psmith@gnu.org>

        * src/read.c (parse_file_seq): Update comments.

2019-07-13  Mike Haboustak  <haboustak@gmail.com>  (tiny change)

        [SV 28456] Don't override $< when no default rule has been defined
        The check for matching a file's command to the default rule's command
        does not account for null. If no .DEFAULT is defined a rule with no
        recipe has it's $< variable set to the value of $@. This breaks second
        expansion, particularly when used with pattern rules.

        * src/commands.c [set_file_variables]: Check that cmds is set
        * tests/scripts/features/se_explicit: Test case
        * tests/scripts/features/se_implicit: Test case

2019-07-13  Paul Smith  <psmith@gnu.org>

        Switch to the gnulib version of strerror()
        * bootstrap.conf: Add strerror module
        * configure.ac: Remove strerror check
        * src/misc.c: Remove local strerror() implementation
        * src/config.ami.template: Remove HAVE_STRERROR
        * src/config.h-vms.template: Ditto.
        * src/config.h.W32.template: Ditto.

2019-05-19  Paul Smith  <psmith@gnu.org>

        * doc/make.texi: [SV 51974] Clarify makefile parsing operations.

        * doc/make.texi: [SV 54116] Document whitespace removal trick.
        Discovered and explained by Michael Henry <gnu@drmikehenry.com>
        * tests/scripts/variables/flavors: Add a test to preserve the behavior.

2019-05-19  Paul Smith  <psmith@gnu.org>

        [SV 46013] Allow recursive variable overrides from Makefiles
        Ensure that variable overrides are passed to recursive make instances
        even if no overrides were provided on the command line.
        Fix suggested by Rici Lake <ricilake@gmail.com>

        * src/main.c (define_makeflags): Add overrides without respect to the
        value of command_variables.
        * tests/scripts/features/recursion: Add a test.

2019-05-19  Paul Smith  <psmith@gnu.org>

        Update developer customizations
        * .ccls: Remove -std=c99: it disables __attribute__ causing warnings.
        * .dir-locals.el: Force the C coding style to "gnu".
        * make-gdb.py: Add GDB macros for pretty-printing GNU make structs.
        * scripts/copyright-update: Use GNULIB_SRCDIR to find update-copyright.

2019-05-19  Paul Smith  <psmith@gnu.org>

        [SV 54549] Don't free used set_lists during merge
        When merging the variable_set_lists for two targets it could be
        that the "from" set list is a subset of the "to" set list: check
        for this situation to avoid freeing used memory.

        * src/variable.c (merge_variable_set_lists): Walk the "to" list and
        if the "from" list is contained in it, nothing to do.
        * tests/scripts/features/se_explicit: Add a test.

2019-05-19  Paul Smith  <psmith@gnu.org>

        * src/hash.c (jash_string): [SV 54980] Avoid ASAN error

2019-05-19  Paul Smith  <psmith@gnu.org>

        [SV 54740] Ensure .SILENT settings do not leak into sub-makes
        Create a new variable run_silent to hold the current instance's global
        silence setting, allowing silent_flag to represent only whether the -s
        option was provided on the command line.

        * src/makeint.h: Change silent_flag variable to run_silent.
        * src/job.c: Ditto.
        * src/remake.c: Ditto.
        * src/file.c: Ditto.
        * src/main.c: Add a new global variable run_silent.
        (decode_switches): After switches are decoded, initialize run_silent.
        * tests/scripts/targets/SILENT: Add a test for recursive behavior.

2019-05-19  Paul Smith  <psmith@gnu.org>

        Update copyright statements for 2019

2019-05-12  Kaz Kylheku  <kaz@kylheku.com>

        [SV 8297] Implement "grouped targets" for explicit rules.
        This patch allows "grouped targets" using the &: syntax:

          tgt1 tgt2 ... tgtn &: pre1 pre2 ...
                recipe

        When the &: separator is used (in single or double colon forms), all
        the targets are understood to be built by a single invocation of the
        recipe.  This is accomplished by piggy-backing on the already-existing
        pattern rule feature, using the file's "also_make" list.

        * NEWS: Add information about grouped targets.
        * doc/make.texi (Multiple Targets): Add information on grouped targets.
        (Pattern Intro): Refer to the new section to discuss multiple patterns.
        * src/main.c (main): Add "grouped-targets" to .FEATURES
        * src/read.c (make_word_type): Add new types for &: and &::.
        (eval): Recognize the &: and &:: separator and remember when used.
        (record_files): Accept an indicator of whether the rule is grouped.
        If so, update also_make for each file to depend on the other files.
        (get_next_mword): Recognize the &: and &:: word types.
        * tests/scripts/features/grouped_targets: New test script.
        * AUTHORS: Add Kaz Kylheku

2019-05-12  Paul Smith  <psmith@gnu.org>

        * variable.c (define_variable_in_set): Clear new structs

        * po/LINGUAS: Add Portuguese translation

        Add developer customizations
        * .ccls: Configure the ccls LSP server
        * .dir-locals.el: Reset some parameters for ccls and lsp-mode
        * .gitignore: Update for GTAGS and ccls
        * maintMakefile: Don't search hidden directories for sources

2018-09-16  Paul Smith  <psmith@gnu.org>

        * src/arscan.c (ar_member_touch): [SV 54533] Stop \0 in archive headers

        Change output_write() to writebuf(), add readbuf() helper.
        * src/misc.c (writebuf, readbuf): Create helper functions that will
        reliably write a buffer to a file descriptor in the face of EINTR
        causing short writes, and read from a file descriptor into a buffer
        in the face of EINTR causing short reads.
        * src/makeint.h: Declare these functions.
        * src/output.c: Remove output_write() and replace with writebuf().
        (_outputs, out_of_memory): Call writebuf(), not output_write().
        * src/arscan.c (ar_scan): Call readbuf() instead of read(2).
        (ar_member_touch): Remove duplicate header write, call writebuf()
        instead of output_write(), and readbuf() instead of read(2).

2018-09-15  Paul Smith  <psmith@gnu.org>

        * doc/make.texi (Remaking Makefiles): [SV 52273] Note MAKE_RESTARTS

        * src/main.c (main): Set jobserver permissions before re-execing
        Fixes an issue seen in the Linux kernel build system, reported by
        Masahiro Yamada <yamada.masahiro@socionext.com>.  Fix suggested
        on the bug-make mailing list by Mike Shal <marfey@gmail.com>.
        * tests/scripts/features/parallelism: Add a test to verify this.

        * doc/make.texi: [SV 48970] Clarify the value of $?

        * doc/make.text: [SV 54360] Weaken "obsolete" language in the manual.
        There's no need to frighten users away from capabilities which are
        perfectly reasonable and definitely not going away, by calling them
        obsolete or discouraged in the manual.

        [SV 40657] Don't create pattern rules for suffix rules with deps.
        * NEWS: Update with a backward-compatibility warning.
        * src/rule.c (convert_to_pattern): If a suffix rule has dependencies,
        do not create a pattern rule for it.  According to the manual suffix
        rules with prerequisites are treated as normal targets.
        * tests/scrips/features/suffixrules: Create some regression tests for
        .SUFFIXES and suffix rules.

2018-08-04  Paul Smith  <psmith@gnu.org>

        * NEWS: Update for the latest changes.

2018-08-04  Paul Smith  <psmith@gnu.org>

        [SV 54233] Preserve higher command_state values on also_make targets.
        If multiple pattern rules have the same pattern as also-make targets
        and we attempt to run them at the same time, we might downgrade the
        command state from 'running' to 'deps_running'; this will prevent
        that also_make from being considered complete causing make to wait
        forever for it to finish.

        Ensure that set_command_state never downgrades the state of a target.

        * src/file.c (set_command_state): Don't downgrade command_state.
        * src/filedef.h (struct file): Document the order prerequisite.
        * test/scripts/features/patternrules: Test the behavior.

2018-08-04  Paul Smith  <psmith@gnu.org>

        * src/job.c (reap_children): Fix inverted win/lose message.

        * tests/scripts/functions/wildcard: [SV 52018] Test dangling symlink.

2018-08-04  Bernhard M. Wiedemann  <bwiedemann@suse.de>

        * src/read.c (parse_file_seq): [SV 52076] Sort wildcard results.

2018-08-04  Paul Smith  <psmith@gnu.org>

        * tests/scripts/features/archives: [SV 54395] Test long archive names.

2018-08-04  Ben Hutchings  <ben@decadent.org.uk>

        * src/arscan.c (ar_scan): [SV 54395] Allow long names in archives.
        Commit bc9d72beb0cb "Resolve issues discovered by static code
        analysis." added range checks on archive member name length.  However,
        on non-AIX systems it also checked BSD-style long names against the
        short name limits and and checked the *offset* for GNU-style long
        names against the short name limits.  This caused valid long names to
        be rejected.

        * Record the size of the GNU name map and validate offsets against it
        * Ensure that the last entry in the name map is null-terminated
        * Apply a maximum length of INT_MAX for element sizes

        Reported-by: Philipp Wolski <philipp.wolski@kisters.de>

2018-08-04  Paul Smith  <psmith@gnu.org>

        * lib/glob.c (glob_in_dir): [SV 53465] Allow symlinks to directories.
        Fix from Rich Felker <bugdal@aerifal.cx> on the musl mailing list.
        * tests/scripts/functions/wildcard: Create a regression test for this.

        * configure.ac: Add --disable-posix-spawn option
        * maintMakefile: Add a test for the option
        * src/job.c: Change HAVE_* preprocessor checks to USE_POSIX_SPAWN

        * src/job.c (child_execute_job): Clean up posix_spawn invocation

2018-08-04  Aron Barath  <baratharon@caesar.elte.hu>

        * job.c (child_execute_job): Prefer posix_spawn() over fork()/exec()

2018-08-04  Paul Smith  <psmith@gnu.org>

        Clean up errors for invalid commands and add regression tests.
        * src/function.c (func_shell_base): Use error() instead of recreating
        the error output.
        * src/job.c (exec_command): Show more standard error messages.
        * src/load.c (unload_file): Fix whitespace in the error message.
        * tests/scripts/features/errors: Add tests for starting non-
        existent commands and new error message formats.
        * tests/scripts/features/output-sync: New error message formats.
        * tests/scripts/functions/shell: Ditto.

2018-08-04  Paul Smith  <psmith@gnu.org>

        Queue failed fork() (etc.) to be handled like any other failed job.
        If we failed to fork() we were essentially exiting make immediately
        without respect to ignore flags, etc.  On one hand that makes sense
        because if you can't fork you're in real trouble, but it doesn't
        work so well on systems where we don't fork at all.  Instead, treat
        a fork error like any other error by delaying the handling until
        the next call to reap_children().  Any child with a PID of -1 is
        considered to have died before starting so check these first without
        waiting for them.

        * src/commands.c (fatal_error_signal): Don't kill children that
        never started.
        * src/function.c (func_shell_base): Handle cleanup properly if the
        child doesn't start.
        * src/job.c (reap_children): Check for children that died before
        starting and handle them without waiting for the PID.
        (start_job_command): Free memory when the child doesn't start.
        (start_waiting_job): Don't manage children who never started.
        (child_execute_job): If the fork fails return PID -1.
        * src/vmsjobs.c: Check for children that never started.
        * tests/run_make_tests.pl: Parse config.status to get all options.

2018-08-02  Aron Barath  <baratharon@caesar.elte.hu>

        * configure.ac: Check for posix_spawnattr_setsigmask

        * configure.ac: Check for spawn.h and posix_spawn()

        * src/makeint.h: Use pid_t to store PIDs, of int.
        * src/commands.c (getpid): Ditto.
        * src/job.h (*): Ditto.
        * src/job.c (*): Ditto.
        * src/main.c (main): Ditto.
        * src/remote-cstms.c (start_remote_job): Ditto.
        * src/remote-stub.c (start_remote_job): Ditto.

2018-08-02  spagoveanu@gmail.com  <spagoveanu@gmail.com>  (tiny change)

        * src/dir.c: Preserve glob d_type field
        When using GNU make on a system with glibc glob a pattern ending in
        a slash is also matching regular files, but only in subdirectories:

        $ mkdir -p dir/subdir
        $ cd dir
        $ touch file1 subdir/file2
        $ echo 'test:; @echo $(wildcard */ */*/)' | make -f -
        subdir/ subdir/file2
        $ echo 'test: */ */*/; @echo "$?" != */ */*/' | make -f -
        subdir/ subdir/file2 != subdir/ */*/

        It happens because in the gl->gl_readdir callback supplied to glob(),
        dirent->d_type is set to DT_UNKNOWN, and the glob() implementation
        in glibc assumes that such a directory entry *cannot* possibly be a
        regular file.

        Pass the actual d_type down to glob(); this is the right thing to do
        even if glibc is fixed, because it saves an extra stat() syscall for
        each dirent.

2018-08-02  Paul Smith  <psmith@gnu.org>

        * src/read.c(unescape_char): Use C comments not C++ comments.
        * src/posixos.c(set_blocking): Ditto.
        * src/w32/subproc/sub_proc.c(process_init): Ditto

        Enhance the Basic.mk environment to work with Gnulib
        * maintMakefile: Omit generated headers from Basic.mk prerequisites.
        * Basic.mk.template: Rework commands to use with $(call ...) macros.
        * mk/Amiga.mk: Ditto.
        * mk/VMS.mk: Ditto.
        * mk/Windows32.mk: Ditto, plus P2W to convert POSIX to Windows paths.
        * mk/msdosdjgpp.mk: Ditto.

2018-07-02  Paul Smith  <psmith@gnu.org>

        Resolve most of the Windows Visual Studio warnings.
        * Convert integer types to size_t where necessary.
        * Align other integral types to avoid casts and type warnings.

2018-07-02  Paul Smith  <psmith@nuodb.com>

        Update regression tests for Windows.
        * tests/scripts/features/jobserver: Windows doesn't use pipes
        * tests/scripts/functions/shell: Don't test kill -2 on Windows
        * tests/scripts/misc/bs-nl: Windows doesn't handle single quotes
        * tests/scripts/misc/general3: Ditto.

        * maintMakefile: Preserve comments during compilation

        * function.c(abspath): Use memcpy() to avoid GCC 8.1 warnings

2018-07-02  Paul Smith  <psmith@nuodb.com>

        Convert GNU make to use the gnulib portability library
        Move content from glob/* and config/* into standard GNU directory
        locations lib/* and m4/*.

        Install the gnulib bootstrap script and its configuration file, and
        create a bootstrap.bat file for Windows.  Update the README.git file
        with new requirements and instructions for building from Git.

        At this point we only install the alloca, getloadavg, and FDL modules
        from gnulib.  We keep our old glob/fnmatch implementation since the
        gnulib versions require significant amounts of infrastructure which
        doesn't exist on Windows yet.  Further work is required here.

        Due to a problem with gnulib's version of getloadavg, we need to bump
        the minimum required version of automake to 1.16.1 unfortunately.

        * README.git: Update instructions
        * NEWS: Move developer news to a separate section
        * configure.ac: Update for use with gnulib modules

        * bootstrap: Bootstrap from Git workspace (import from gnulib)
        * bootstrap.conf: Bootstrap configuration for GNU make
        * bootstrap.bat: Bootstrap from Git workspace for Windows
        * gl/modules/make-glob: Support our local fnmatch/glob implementation

        * config/acinclude.m4: Move to m4/
        * config/dospaths.m4: Move to m4/
        * glob/fnmatch.c: Move to lib/
        * glob/fnmatch.h.in: Move to lib/
        * glob/glob.c: Move to lib/
        * glob/glob.h.in: Move to lib/

        * Makefile.am: Update for new directories
        * build.template: Update for new directories
        * build_w32.bat: Update for new directories
        * builddos.bat: Update for new directories
        * maintMakefile: Update for new directories
        * makefile.com: Update for new directories
        * mk/Amiga.mk: Update for new directories
        * mk/Posix.mk.in: Update for new directories
        * mk/VMS.mk: Update for new directories
        * mk/Windows32.mk: Update for new directories
        * mk/msdosdjgpp.mk: Update for new directories

        * po/LINGUAS: One language per line (needed by gnulib)

        * INSTALL: Remove (obtained from gnulib)
        * src/alloca.c: Remove (obtained from gnulib)
        * src/getloadavg.c: Remove (obtained from gnulib)
        * po/Makevars: Remove (created by bootstrap)
        * config/*: Remove leftover files
        * glob/*: Remove leftover files

2018-07-01  Paul Smith  <psmith@nuodb.com>

        * Makefile.ami, glob/Makefile.ami: Remove obsolete files

2018-07-01  Ola Olsson  <ola1olsson@gmail.com>

        * doc/make.texi: Updated language

2018-07-01  Paul Smith  <psmith@gnu.org>

        * all: Update Copyright statements for 2018

        * scripts/copyright-update: Maintainer's script for copyright mgmt

2018-02-10  Paul Smith  <psmith@gnu.org>

        * build_w32.bat: Support Visual Studio 17.

2017-11-19  Paul Smith  <psmith@gnu.org>

        * configure.ac: Support GLIBC glob interface version 2

2017-11-19  Paul Smith  <psmith@gnu.org>

        Rework directory structure to use GNU-recommended "src" directory.
        Move the source code (other than glob) into the "src" subdirectory.
        Update all scripting and recommendations to support this change.

        * *.c, *.h, w32/*: Move to src/
        * configure.ac, Makefile.am, maintMakefile: Locate new source files.
        * Basic.mk.template, mk/*: Update for new source file locations.
        * NEWS, README.DOS.template: Update for new locations.
        * build.template, build_w32.bat, builddos.bat: Ditto.
        * po/POTFILES.in: Ditto
        * tests/run_make_tests.pl, tests/scripts/features/load*: Ditto.
        * make.1: Move to doc.
        * mk/VMS.mk: Add support for building on VMS (hopefully).
        * makefile.vms, prepare_w32.bat: Remove.
        * SCOPTIONS: Update to define HAVE_CONFIG_H

2017-11-18  Paul Smith  <psmith@gnu.org>

        * job.c: Add "command" as a known shell built-in.
        This is not a POSIX shell built-in but it's common in UNIX shells.
        Reported by Nick Bowler <nbowler@draconx.ca>.

        * tests/scripts/features/output-sync: Revert bad change in 0c5a9f9b92a

2017-11-18  Paul Smith  <psmith@gnu.org>

        Remove unsupported build facilities.
        Over time the non-standard build and install systems (nmake files,
        smake files, Visual Studio project files, etc.) have atrophied and
        maintaining them is not worth the effort, for such a simple utility
        as make.  Remove all the non-standard build tool support and unify
        OS-specific build rules under a basic set of (GNU make) makefiles.

        Preserve the existing bootstrapping scripts (for POSIX, Windows,
        and MS-DOS).  Also the existing VMS build scripts are left unchanged:
        I don't have enough experience with VMS to venture into this area.
        Perhaps one of the VMS maintainers might like to determine whether
        conversion would be appropriate.

        Rather than create libraries for w32 and glob (non-POSIX), simply
        link the object files directly to remove the complexity.

        * NEWS: Update with user-facing notes.
        * Makefile.am: Clean up to use the latest automake best practices.
        Build Windows code directly from the root makefile to avoid recursion.
        * README.Amiga, README.DOS.template, README.W32.template: Updated.
        * INSTALL: Point readers at the README.git file.
        * maintMakefile: Remove obsolete files.  Create Basic.mk file.
        * Basic.mk.template, mk/*.mk: Create basic GNU make-based makefiles.
        * build_w32.bat: Copy Basic.mk to Makefile
        * configure.ac: We no longer need AM_PROG_AR.
        * dosbuild.bat: Rename to builddos.bat.  Incorporate configure.bat.
        * Makefile.DOS.template: Remove.
        * NMakefile.template, w32/subproc/NMakefile: Remove.
        * SMakefile.template, glob/SMakefile, glob/SCOPTIONS, make.lnk: Remove.
        * configure.bat, glob/configure.bat: Remove.
        * w32/Makefile.am: Remove.
        * make_msvc_net2003.sln, make_msvc_net2003.vcproj: Remove.

2017-11-11  Paul Smith  <psmith@gnu.org>

        * Makefile.am: Add jhelp.pl to remote test setup.

2017-11-11  Paolo Bonzini  <pbonzini@redhat.com>

        Do not use STOP_SET for singleton compares.
        Compare against '$' directly rather than using MAP_VARIABLE.
        This saves ~10% for find_map_function, which is the top hotspot in
        QEMU's no-op build.  The build is sped up overall by about 1.5%
        more (from 11.1s to 10.95s).

        * read.c (find_map_function): Do not compare against singleton sets.

2017-11-11  Paolo Bonzini  <pbonzini@redhat.com>

        Speedup parsing of functions.
        Use the stopchar map to quickly jump over everything that is
        not an open/close brace, an open/close parenthesis or a comma.

        This saves 1% on QEMU's noop build (from 11.23s to 11.1s).

        * function.c (find_next_argument, handle_function): Check
        with STOP_SET before comparing against individual characters.
        * main.c (initialize_stopchar_map): Initialize MAP_VARSEP
        mappings in stopchar_map.
        * makeint.h (MAP_VARSEP): New.

2017-11-11  Paolo Bonzini  <pbonzini@redhat.com>

        Remove MAP_PERCENT as strchr is faster.
        * read.c (find_percent_cached): Use strchr instead of STOP_SET
        to find % or nul.
        * makeint.h (MAP_PERCENT): Remove.
        * main.c (initialize_stopchar_map): Remove.

2017-11-11  Paolo Bonzini  <pbonzini@redhat.com>

        Use Jenkins hash.
        This is about twice as fast as the current hash, and removes the
        need for double hashing (improving locality of reference).  The
        hash function is based on Bob Jenkins' design, slightly adapted
        wherever Make needs to hash NUL-terminated strings.  The old hash
        function is kept for case-insensitive hashing.

        This saves 8.5% on QEMU's no-op build (from 12.87s to 11.78s).

        * configure.ac: Check endianness.
        * hash.c (rol32, jhash_mix, jhash_final, JHASH_INITVAL,
        sum_get_unaligned_32, jhash): New.
        * hash.h (STRING_HASH_1, STRING_N_HASH_1): Use jhash.
        (STRING_HASH_2, STRING_N_HASH_2): Return a dummy value.
        (STRING_N_COMPARE, return_STRING_N_COMPARE): Prefer memcmp to strncmp.

2017-11-11  Paolo Bonzini  <pbonzini@redhat.com>

        Use strchr for simple case of find_char_unquote.
        In most cases, find_char_unquote has a single stopchar.  In that
        case we can look for it using strchr's optimized implementation.

        This saves 3.5% on QEMU's noop build (from 11.78s to 11.37s).

        * read.c (find_char_unquote): Rename to find_map_unquote.  Replace
        with an implementation optimized for the case where the stopchar
        is a singleton.  Adjust all callers.

2017-11-11  Paolo Bonzini  <pbonzini@redhat.com>

        Use strchr/memmove in collapse_continuations.
        collapse_continuations is already using strchr to speed up the
        common case of no backslash-newline sequence, but on modern
        processors it is faster to scan the string twice with
        strchr+memmove (or strlen+memmove) than to move bytes manually.

        Saves about 1.5% on QEMU's no-op build (from 11.37s to 11.23s).

        * misc.c (collapse_continuations): Rewrite the scanning of LINE.

2017-10-31  Paul Smith  <psmith@gnu.org>

        * main.c (main): [SV 48274] Allow -j in makefile MAKEFLAGS variable.
        * tests/jhelp.pl: New file to allow testing parallelism without sleep.
        * tests/scripts/features/parallelism: Test this.
        * tests/scripts/features/jobserver: Update tests.
        * tests/scripts/features/output-sync: Remove useless rm command.

2017-10-30  Paul Smith  <psmith@gnu.org>

        * job.c (child_error): Modify error message string.
        Ensure Emacs compile-mode's next-error doesn't match target failure
        messages.  Syntax errors in makefiles are still matched.

        * function.c (func_if): Check the first character of condition.
        Reported by Rob W <robw9739@gmail.com>

2017-10-30  Paul Eggert  <eggert@cs.ucla.edu>

        glob: Do not assume glibc glob internals.
        It has been proposed that glibc glob start using gl_lstat,
        which the API allows it to do.  GNU 'make' should not get in
        the way of this.  See:
        https://sourceware.org/ml/libc-alpha/2017-09/msg00409.html

        * dir.c (local_lstat): New function, like local_stat.
        (dir_setup_glob): Use it to initialize gl_lstat too, as the API
        requires.

2017-10-30  Paul Smith  <psmith@gnu.org>

        Compute load from number of running processes.
        * job.c (load_too_high): If /proc/loadavg is available, compare the
        maximum load against the number of processes currently running.  If
        we can't parse /proc/loadavg, use the previous algorithm.

        Concept and initial patch from Sven C. Dack <sven.c.dack@sky.com>

2017-09-30  Eli Zaretskii  <eliz@gnu.org>

        Fix checking existence of directories on MS-Windows
        * remake.c (name_mtime) [WINDOWS32]: Emulate Posix behavior of
        'stat' with the likes of "foo/" and "foo/.".

2017-07-09  Paul Smith  <psmith@gnu.org>

        Update copyright statements for 2017.

        Remove uses of unnecessary "register" keyword.

        * variable.c (create_pattern_var): [SV 51266] Create with xcalloc().
        Reported by Chris Metcalf <cmetcalf@mellanox.com>

        [SV 51400] Only unblock fatal signals after child invocation
        * job.c (unblock_sigs): Only unblock fatal signals not all signals.
        (unblock_all_sigs): Unblock all signals not just fatal signals.
        (child_execute_job): Call unblock_all_sigs() in child process.
        * job.h: Remove unused function definitions.
        * remote-cstms.c (start_remote_job): Call unblock_all_sigs() in
        child process.
        Reported by Koen Van Hoof <koen.van_hoof@nokia.com>

2017-07-01  Paul Smith  <psmith@gnu.org>

        * function.c (shell_completed): [SV 51014] Add signal to .SHELLSTATUS
        * tests/scripts/functions/shell: Verify that .SHELLSTATUS contains
        a non-0 value when the shell exits due to a signal.

2017-06-07  Eli Zaretskii  <eliz@gnu.org>

        Avoid crashes when SHELL=abcde is specified on the command line
        * variable.c (do_variable_definition): If $SHELL was not found,
        process "SHELL=foo" as any other variable definition.  This avoids
        segfaults when SHELL=foo is specified on the Make command line.
        Reported by Orgad Shaneh <orgads@gmail.com>.

2017-06-04  Paul Smith  <psmith@gnu.org>

        [SV 51159] Use a non-blocking read with pselect to avoid hangs.
        * posixos.c (set_blocking): Set blocking on a file descriptor.
        (jobserver_setup): Set non-blocking on the jobserver read side.
        (jobserver_parse_auth): Ditto.
        (jobserver_acquire_all): Set blocking to avoid a busy-wait loop.
        (jobserver_acquire): If the non-blocking read() returns without
        taking a token then try again.

        [SV 50823] Support filenames containing '$' in MAKEFILE_LIST
        * variable.h (enum variable_flavor: Add a new flavor for appended
        values that shouldn't be expanded.
        * variable.c (do_variable_definition): If given this new flavor,
        do not expand the value before appending it.
        * read.c (eval_makefile): Use this new flavor for MAKEFILE_LIST
        * tests/scripts/variables/MFILE_LIST: Test filenames containing '$'.

        * tests/test_driver.pl: Useful error if given an invalid test name.

        * NEWS: Do not insert a space during '+=' if the value is empty.
        * doc/make.texi (Appending): Document this behavior.
        * variable.c (do_variable_definition): Only add a space if the variable
        value is not empty.
        * tests/scripts/variables/flavors: Test this behavior.

2017-06-04  Enrique Olaizola  <enrique_olaizola16@hotmail.com>  (tiny change)

        * read.c (read_all_makefiles): [SV 50909] Add MAKEFILES to strcache

2017-06-04  Paul Smith  <psmith@gnu.org>

        * po/LINGUAS: Add support for traditional Chinese (zh_TW)

        Rename output_tmpfile() to a misc function get_tmpfile()
        * output.c: Remove output_tmpfile() and umask handling.
        * output.h: Ditto.
        * misc.c: Add get_tmpfile() and umask handling.
        * makeint.h: Ditto.
        * function.c: Rename output_tmpfile() to get_tmpfile().
        * main.c: Ditto.
        * vmsjobs.c: Ditto.

        [SV 13651] Handle out-of-memory conditions slightly more gracefully.
        * makeint.h: Change OUT_OF_MEM() macro to out_of_memory() function.
        * output.h, job.h: Move FD_* macros from job.h to output.h.
        * output.c (output_write): Write a buffer to an FD directly.
        (out_of_memory): Use output_write() to avoid allocating more
        memory while writing the error, and call exit() instead of die().
        This does mean we can't translate the error string, though.
        * misc.c (xmalloc, xcalloc, xrealloc, xstrdup, xstrndup): Call new
        out_of_memory() rather than OUT_OF_MEM().
        * read.c (parse_file_seq): Ditto.

        Clean up close-on-exec, particularly with jobserver pipes.
        * configure.ac: Check sys/file.h and assume fileno() always exists.
        * output.h: Move output-specific content from job.h to output.h.
        * os.h (fd_inherit, fd_noinherit): New functions manage FD inheritance.
        * posixos.c (fd_inherit, fd_noinherit): Implement for POSIX systems.
        (jobserver_setup): Force jobserver FDs to not be inherited by default.
        (jobserver_pre_child): Enable inheritance in recursive invocations.
        (jobserver_post_child): Disable inheritance after recursive invocations.
        * w32/w32os.c (fd_inherit, fd_noinherit): Implement for W32 systems.
        * job.h (CLOSE_ON_EXEC): Remove macro in deference to new fd_noinherit.
        * function.c (func_shell_base): Convert CLOSE_ON_EXEC to fd_noinherit.
        * job.c (child_execute_job): Ditto.
        * output.c (setup_tmpfile): Ditto.
        * read.c (eval_makefile): Ditto, plus remove HAVE_FILENO check.
        * w32/include/sub_proc.h: Remove process_noinherit for fd_noinherit.
        * w32/subproc/sub_proc.c: Ditto.

        [SV 50300] Use CFLAGS value of "-O1" in POSIX mode.
        * read.c (record_files): Use "-O1" not "-O" for CFLAGS and FFLAGS.
        * tests/scripts/targets/POSIX: Test for the new value.

        * configure.ac: [SV 50648] Detect Guile 2.2 packages.

        * doc/make.texi: [SV 50304] Add missing close parenthesis.

        Add test suite support to Windows
        * main.c (main): Sanitize program name detection on Windows.
        * makeint.h: 'program' is a const string on all platforms now.
        * tests/run_make_tests.bat: Windows bat file to invoke tests
        * tests/test_driver.pl: Obtain system-specific error messages.
        (get_osname): Compute the $port_type here.  Add more $osname checks
        for different Windows Perl ports.
        (_run_command): Rewrite the timeout capability to work properly
        with Windows.  Don't use Perl fork/exec; instead use system(1,...)
        which allows a more reliable/proper kill operation.
        Also, allow options to be given as a list instead of a string, to
        allow more complex quoting of command-line arguments.
        * tests/run_make_tests.pl (run_make_with_options): Allow options
        to be provided as a list in addition to a simple string.
        (set_more_defaults): Write sample makefiles and run make on them
        instead of trying to run echo and invoking make with -f-, to avoid
        relying on shell and echo to get basic configuration values.  Also
        create a $sh_name variable instead of hard-coding /bin/sh.
        * tests/scripts/features/archives: Skip on Windows.
        * tests/scripts/features/escape: Use list method for passing options.
        * tests/scripts/features/include: Use system-specific error messages.
        * tests/scripts/features/output-sync: "Command not found" errors
        generate very different / odd output on Windows.  This needs to be
        addressed but for now disable these tests on Windows.
        * tests/scripts/functions/abspath: Disable on Windows.
        * tests/scripts/functions/file: Use system-specific error messages.
        * tests/scripts/functions/shell: "Command not found" errors generate
        very different / odd output on Windows.  This needs to be addressed
        but for now disable these tests on Windows.
        * tests/scripts/misc/close_stdout: Disable on Windows.
        * tests/scripts/options/dash-k: Use system-specific error messages.
        * tests/scripts/options/dash-l: Disable on Windows.
        * tests/scripts/options/eval: Use list method for passing options.
        * tests/scripts/options/general: Skip some non-portable tests.
        * tests/scripts/targets/ONESHELL: Skip some non-portable tests.
        * tests/scripts/targets/POSIX: Skip some non-portable tests.
        * tests/scripts/variables/MAKEFILES: Skip some non-portable tests.
        * tests/scripts/variables/SHELL: Use a makefile not -f- for testing.

2017-06-04  Enrique Olaizola  <enrique_olaizola16@hotmail.com>

        * tests/run_make_tests.pl: [SV 50902] Find Perl modules

2017-01-11  Eli Zaretskii  <eliz@gnu.org>

        [SV 50021] Avoid infloop on MS-Windows with short scripts
        * job.c (reap_children) [WINDOWS32]: Avoid recursive call to
        reap_children when the argument passed to
        map_windows32_error_to_string is negative or too large.

2016-12-28  Paul Smith  <psmith@gnu.org>

        * main.c (switches): Add -E as an alias for --eval.
        * make.1: Document the -E and --eval options.
        * doc/make.texi: Document the -E option.
        * tests/scripts/options/eval: Test the -E option and MAKEFILES.
        * NEWS: Add information about the new option.

        * main.c (switches): Add --no-silent to undo -s options.
        * make.1: Document the new flag.
        * doc/make.texi: Document the new flag.  Remove suggestions that the
        .SILENT special target is deprecated or should not be used.
        * tests/scripts/options/dash-s: Test the -s and --no-silent options.
        * NEWS: Add information about the new option.

2016-12-26  Martin Dorey  <martin.dorey@hds.com>

        * job.c (child_execute_job): [SV 49938] Avoid spurious GCC warning.

        * main.c (main): [SV 49935] Fix uninitialized variable.

2016-12-26  Paul Smith  <psmith@gnu.org>

        [SV 40236] Handle included file open failures properly.
        * read.c (eval_makefile): Set deps->error if we discovered any
        error reading makefiles, and set NONEXISTENT_MTIME so we know
        it needs to be rebuilt.
        * main.c (main): Clean up management of makefile_mtimes.
        * tests/scripts/features/include: Add open failure testcases.

        Portability changes for the test suite.
        * tests/test_driver.pl: Save error strings for later comparison.
        * tests/run_make_tests.pl: Create portable commands for later use.
        * tests/*: Use these new variables.

        [SV 20513] Un-escaped # are not comments in function invocations
        * NEWS: Document the change, as a backward-incompatible change.
        * main.c (main): Add 'nocomment' to the .FEATURES variable.
        * read.c (remove_comments): Skip variable references during remove.
        (find_char_unquote): Fix comments for new STOPMAP support.
        * tests/scripts/features/escape: Test new escape syntax.
        * tests/scripts/functions/guile: Ditto.
        * tests/scripts/functions/shell: Ditto.

        * main.c (main): [SV 40234] Show correct error message.

2016-12-26  Christoph Schulz  <develop@kristov.de>

        * main.c (switches): [SV 48809] Accept obsolete jobserver flag.

2016-12-26  Paul Smith  <psmith@gnu.org>

        * read.c (get_next_mword): [SV 49865] Make fallthrough explicit.

        [SV 49114] Remove support for the NO_FLOAT compile flag.
        * makeint.h (max_load_average): Always a double.
        * main.c (max_load_average, default_load_average): Always doubles.
        (switches): -l option is a "floating" format.
        (decode_switches, define_makeflags): Support "floating" format.
        * remake.c (f_mtime): Show time skew as double.
        * rule.c (print_rule_data_base): Show percentages as double.
        * Makefile.ami, README.DOS.template, SMakefile.template: Remove
        references to NO_FLOAT.
        * SCOPTIONS, glob/SCOPTIONS: Remove NO_FLOAT settings.

        [SV 45477] [SV 49115] Parse DOS/Windows drivespecs correctly.
        * read.c (parse_file_seq) [WINDOWS32]: Only consider a colon part of
        a path if it's in a valid Windows drivespec.

2016-12-25  Paul Smith  <psmith@gnu.org>

        [SV 49116] Check potential null pointer dereference.
        * w32/subproc/sub_proc.c (make_command_line): Simplify cygwin shell
        check for correctness.

2016-12-25  Jaak Ristioja  <jaak@ristioja.ee>

        * expand.c (variable_append): [SV 49113] Possible null ptr deref

        * w32/*/dirent.*: [SV 49111] Remove unused telldir()

2016-12-25  Paul Smith  <psmith@gnu.org>

        Add more GCC warnings to the maintainer build.
        * arscan.c: [SV 49112] Correct TEST printf() formatting.
        Recommended by Jaak Ristioja <jaak@ristioja.ee>
        * hash.c: Correct fprintf() formatting.
        * maintMakefile: Add extra GCC warning flags.

        * po/Makevars, makeint.h, debug.h: Add xgettext C format flags.

        * po/LINGUAS: Added Serbian translation.

        * README.template: Clarify some items in the README

        * doc/make.texi: [SV 48951] Fix documentation typo.

        * maintMakefile: Update default GPG ID for new key.

2016-12-14  Paul Smith  <psmith@gnu.org>

        Resolve issues discovered by static code analysis.
        * maintMakefile: Add a rule to submit code for analysis.
        * configure.ac: Check for availability of the umask() function.
        * output.c (output_tmpfd, output_tmpfile): Use umask on temp files.
        * makeint.h (PATH_VAR): Reserve an extra character for nul bytes.
        * function.c (func_error): Initialize buffer to empty string.
        * job.c (child_execute_job): Verify validity of fdin.
        * main.c (main): Simplify code for makefile updating algorithm.
        * arscan.c (ar_scan): Verify member name length before reading.
        * read.c (readline): Cast pointer arithmetic to avoid warnings.
        * remake.c (update_file): Remove unreachable code.
        (name_mtime): Verify symlink name length.

2016-11-12  Eli Zaretskii  <eliz@gnu.org>

        * NEWS: Mention the extended support for -jN on MS-Windows.

2016-11-12  Marc Ullman  <marc@mathworks.com>

        Support more than 63 jobs on MS-Windows
        * job.c (start_waiting_job, load_too_high):
        * w32/w32os.c (jobserver_setup, jobserver_acquire): Abstracted out
        MAXIMUM_WAIT_OBJECTS.  Call process_table_full instead.
        * w32/include/sub_proc.h: Update and add prototypes.
        * w32/subproc/sub_proc.c (GMAKE_MAXIMUM_WAIT_OBJECTS): New macro.
        (process_wait_for_multiple_objects): Drop-in replacement for Windows
        API WaitForMultipleOjects.
        (process_wait_for_any_private): Replaced MAXIMUM_WAIT_OBJECTS with
        GMAKE_MAXIMUM_WAIT_OBJECTS.
        (process_table_full): Replacement for process_used_slots.
        (process_used_slots): Removed, as no longer needed.
        (process_table_usable_size): Returns maximum usable size of process
        table.
        (process_table_actual_size): Returns actual size of process table.
        (process_register): Added assertion.
        (process_easy): Abstracted out MAXIMUM_WAIT_OBJECTS.

2016-10-09  Eli Zaretskii  <eliz@gnu.org>

        Only include strings.h in MinGW builds
        * main.c:
        * job.c: Include strings.h only if HAVE_STRINGS_H is defined.

        * config.h.W32.template (HAVE_STRINGS_H): Define only for MinGW,
        as MSVC doesn't have this header.

2016-10-06  Eli Zaretskii  <eliz@gnu.org>

        Update the Guile version tested with the MS-Windows build.

        Avoid compiler warnings with MinGW runtime 3.22.2
        * main.c:
        * job.c: Include strings.h, to get the prototypes of strcasecmp
        and strncasecmp with latest MinGW runtime versions.
        * config.h.W32.template (HAVE_STRINGS_H): Define.

2016-06-24  Paul Smith  <psmith@gnu.org>

        * README.W32.template: Update the build documentation.
        * build_w32.bat: Fix issues with Visual Studio builds.  Fix an error
        that always created Debug builds.  Support 32bit and 64bit builds.

        * Update to pre-release version 4.2.90.

2016-06-10  Paul Smith  <psmith@gnu.org>

        GNU Make release 4.2.1.

2016-06-06  Paul Smith  <psmith@gnu.org>

        * maintMakefile: TP recommends rsync for retrieving PO files.

2016-05-31  Jeremy Devenport  <jeremy.devenport@gmail.com>  (tiny change)

        * main.c (main): [SV 48009] Reset stack limit for make re-exec.

2016-05-31  Paul Smith  <psmith@gnu.org>

        [SV 47995] Ensure forced double-colon rules work with -j.
        The fix for SV 44742 had a side-effect that some double-colon targets
        were skipped.  This happens because the "considered" facility assumed
        that all targets would be visited on each walk through the dependency
        graph: we used a bit for considered and toggled it on each pass; if
        we didn't walk the entire graph on every pass the bit would get out
        of sync.  The new behavior after SV 44742 might return early without
        walking the entire graph.  To fix this I changed the considered value
        to an integer which is monotonically increasing: it is then never
        possible to incorrectly determine that a previous pass through the
        graph already considered the current target.

        * filedef.h (struct file): make CONSIDERED an unsigned int.
        * main.c (main): No longer need to reset CONSIDERED.
        * remake.c (update_goal_chain): increment CONSIDERED rather than
        inverting it between 0<->1.
        (update_file_1): Reset CONSIDERED to 0 so it's re-considered.
        (check_dep): Ditto.
        * tests/scripts/features/double_colon: Add a regression test.

2016-05-31  Paul Smith  <psmith@gnu.org>

        * DELETE_ON_ERROR: [SV 48061] Use "exit 1" for portability.
        Reported by Joel Fredrikson <Joel.Fredrikson@it.uu.se>

        * w32/pathstuff.c: [SV 47996] Use ISBLANK() not isblank().

2016-05-28  Eli Zaretskii  <eliz@gnu.org>

        Fix printing time stamps on MS-Windows
        * dir.c (print_dir_data_base) [WINDOWS32]: Use %I64u format for
        printing unsigned 64-bit data types, as %ull is not universally
        supported.

2016-05-27  Luke Allardyce  <lukeallardyce@gmail.com>  (tiny change)

        [SV 48037] Fix MinGW build with Posix configury tools
        * w32/Makefile.am (libw32_a_CPPFLAGS): Add -I$(srcdir)/glob.

2016-05-22  Paul Smith  <psmith@gnu.org>

        GNU Make release 4.2.

2016-05-21  Joe Crayne  <oh.hello.joe@gmail.com>  (tiny change)

        [SV 44742] Fix double-colon rules plus parallel builds.
        * remake.c (update_file): Don't update double-colon target status
        if we're still building targets.
        (ftime_t): Don't propagate timestamps for double-colon targets that
        we've not examined yet.
        * tests/scripts/features/double_colon: Add parallel build tests.

2016-05-21  Paul Smith  <psmith@gnu.org>

        * read.c (eval): [SV 47960] Skip record waiting files when ignoring.
        * tests/scripts/features/conditionals: Test this scenario.

        Separate the GNU make load ABI from internal types.
        Create an internal type "floc" and convert all users to that type.
        * gnumake.h (gmk_floc): Remove the offset field from this type.
        * loadapi.c (gmk_eval): Convert gmk_floc to internal floc.

2016-05-21  Paul Eggert  <eggert@cs.ucla.edu>

        Fixes for enhanced GCC warnings.
        Move function prototypes into header files and out of .c files.
        Use void argument lists for functions that accept no args.
        Remove unused macros.  Make private functions static.  Align
        types with printf format characters.

2016-05-21  Paul Smith  <psmith@gnu.org>

        Fix compile issues with Windows and VMS.
        * main.c (initialize_stopchar_map): isblank() is not part of C89.
        Install bits for space and tab directly.
        * makeint.h: Don't define vfork; autoconf handles this for us.
        * vmsjobs.c: Rename NEXT_TOKEN to V_NEXT_TOKEN to avoid conflicts.
        * dir.c (print_dir_data_base): Visual Studio C doesn't have int64_t.
        * w32/subproc/sub_proc.c (process_begin): Missing arg to memset().
        * build_w32.bat: Don't use obsolete Visual Studio flags.

        Allow compiling with an ISO C 1989/1990 compiler.
        * posixos.c (jobserver_post_child): Use C89 for loop syntax.
        * remake.c (update_goal_chain): Ditto.
        * variable.c (parse_variable_definition): Ditto.

2016-05-17  Eli Zaretskii  <eliz@gnu.org>

        [SV 47942] Avoid random crashes in subordinate programs on MS-Windows
        * w32/subproc/sub_proc.c (process_begin): Zero out startInfo
        before using it.  Fixes crashes in Intel Fortran compiler invoked
        by Make.

2016-04-24  Eli Zaretskii  <eliz@gnu.org>

        Fix the MS-Windows MinGW build
        * build_w32.bat (GccCompile): Use -std=gnu99, as some code uses
        C99 features ('for' loop initial declarations).

        * dir.c (print_dir_data_base) [WINDOWS32]: Cast 'mtime' to
        'int64_t', and use %I64d to print it, to avoid compile-time
        warning about printing a 'time_t' value, which could be either
        a 32-bit or a 64 bit integral type.

2016-04-23  Paul Smith  <psmith@gnu.org>

        * tests/scripts/features/output-sync: increase test timeout.
        I'm getting random failures with a timeout of 10s; increase to 30s.

2016-04-11  Paul Smith  <psmith@gnu.org>

        * NEWS: Update for pre-release

        * dep.h, makeint.h (show_goal_error): Move to makeint.h.

2016-04-11  Paul Smith  <psmith@gnu.org>

        [SV 46433] Show recipe line offsets in line number messages.
        While displaying line numbers, show the relevant line number inside
        the recipe not just the first line of the entire recipe.
        Sample changes suggested by Brian Vandenberg <phantall@gmail.com>

        * gnumake.h (gmk_floc): Add an 'offset' to track the recipe offset.
        * read.c (eval, eval_makefile, eval_buffer): Initialize 'offset'.
        (record_files, install_pattern_rule): Ditto.
        * job.c (new_job, job_next_command): Update 'offset' based on the
        line of the recipe we're expanding or invoking.
        (child_error): Add 'offset' when showing the line number.
        * function.c (func_shell_base): Ditto.
        * output.c (error, fatal): Ditto.
        * NEWS: Mention the new ability.
        * tests/scripts/features/errors: Check the line number on errors.
        * tests/scripts/functions/warning: Check the line number on warnings.
        * tests/scripts/features/output-sync,
        tests/scripts/features/parallelism, tests/scripts/functions/shell,
        tests/scripts/functions/error: Update line numbers.

2016-04-09  Paul Smith  <psmith@gnu.org>

        * maintMakefile: Add a rule for storing preprocessor output.

        [SV 102] Don't show unnecessary include file errors.
        Delay the generation of error messages for included files until we
        are sure that we can't rebuild that included file.
        * dep.h (struct dep): Don't reuse "changed"; make a separate field
        to keep "flags".  Get rid of dontcare and use the flag.
        (struct goaldep): Create a new structure for goal prereqs
        that tracks an errno value and the floc where the include happened.
        Rework the structures to ensure they are supersets as expected.
        In maintainer mode with GCC, use inline to get type checking.
        * read.c (eval_makefile): Return a struct goaldep for the new
        makefile.  Ensure errno is set properly to denote a failure.
        (read_all_makefiles): Switch to goaldep and check errno.
        (eval): Don't show included file errors; instead remember them.
        * remake.c (update_goal_chain): Set global variables to the current
        goaldep we're building, and the entire chain.
        (show_goal_error): Check if the current failure is a consequence
        of building an included makefile and if so print an error.
        (complain): Call show_goal_error() on rule failure.
        * job.c (child_error): Call show_goal_error() on child error.
        * main.c (main): Switch from struct dep to goaldep.
        * misc.c (free_dep_chain): Not used; make into a macro.
        * tests/scripts/features/include: Update and include new tests.
        * tests/scripts/options/dash-B, tests/scripts/options/dash-W,
        tests/scripts/options/print-directory,
        tests/scripts/variables/MAKE_RESTARTS: Update known-good-output.

        * job.c (child_error): Add filename length to output length.
        Reported by Dale Stimson <dale@riyescott.com>

2016-04-04  Paul Smith  <psmith@gnu.org>

        Preserve the real value of -jN in MAKEFLAGS using jobserver.
        Previously if the jobserver was active, MAKEFLAGS would contain only
        the -j option but not the number (not -j5 or whatever) so users
        could not discover that value.  Allow that value to be provided in
        MAKEFLAGS without error but still give warnings if -jN is provided
        on the command line if the jobserver is already activated.

        * NEWS: Discuss the new behavior.
        * os.h, posixos.c, w32/w32os.c: Return success/failure from
        jobserver_setup() and jobserver_parse_auth().
        * main.c (main): Separate the command line storage of job slots (now
        in arg_job_slots) from the control storage (in job_slots).  Make a
        distinction between -jN flags read from MAKEFLAGS and those seen
        on the command line: for the latter if the jobserver is enabled then
        warn and disable it, as before.
        * tests/scripts/features/jobserver: Add new testing.

2016-04-04  Paul Smith  <psmith@gnu.org>

        * tests/run_make_tests.pl: Add file/lineno info to .run file.

        * maintMakefile: Fix logging of check-alt-config target.

        * job.c (child_execute_job): Fix $(shell...) under NO_OUTPUT_SYNC.
        * main.c (decode_output_sync_flags): Use NONE for NO_OUTPUT_SYNC.

        * main.c (main): Restrict disabling debugging for MAKEFILES.

        * Makefile.am, w32/Makefile.am: Fix *os.c for Windows builds.
        Original change provided by Luke Allardyce <lukeallardyce@gmail.com>

        * make.texi: Confirm that CURDIR contains an absolute path.

        * docs/make.texi: [SV 47392] Add "Integrating make" chapter.

        Change --jobserver-fds to more generic --jobserver-auth.
        * NEWS: Mention the change.
        * main.c: Rename jobserver_fds variable to jobserver_auth and
        --jobserver-fds option to --jobserver-auth.
        * os.h, posixos.c, w32/w32os.c: Rename jobserver_parse_arg() and
        jobserver_get_arg() to jobserver_parse_auth()/jobserver_get_auth().

2016-03-23  Paul Smith  <psmith@gnu.org>

        * tests/run_make_tests.pl: Preserve $make_command
        * tests/scripts/options/dash-n: Use $make_command.  This fixes
        a spurious failure when running tests with valgrind enabled.

        * variable.c: Clean up some memory leaks.

        [SV 46995] Strip leading/trailing space from variable names
        * makeint.h: Change MAP_SPACE to MAP_NEWLINE, and add MAP_PATHSEP
        and MAP_SPACE which is now MAP_BLANK|MAP_NEWLINE.  Create
        NEW_TOKEN(), END_OF_TOKEN(), ISBLANK(), ISSPACE() macros.
        * main.c (initialize_stopchar_map): Set MAP_NEWLINE only for
        newline characters.
        * Convert all uses of isblank() and isspace() to macros.
        * Examine all uses of isblank() (doesn't accept newlines) and
        change them wherever possible to ISSPACE() (does accept newlines).
        * function.c (func_foreach): Strip leading/trailing space.
        * variable.c (parse_variable_definition): Clean up.
        * tests/scripts/functions/foreach: Test settings and errors.
        * tests/scripts/functions/call: Rewrite to new-style.
        * tests/scripts/misc/bs-nl: Add many more tests for newlines.

2016-03-21  Paul Smith  <psmith@gnu.org>

        * function.c (func_file): Support reading from files.
        * NEWS: Add information about reading files.
        * make.texi (File Function): Describe reading files.
        * tests/scripts/functions/file: Test new features for $(file ...)

2016-03-20  Paul Smith  <psmith@gnu.org>

        * doc/make.texi (Setting Variables): Fix typo (add comma).

        * job.c (child_error): Combine file info with error message.
        * tests/scripts/...: Update error message matches.

2016-03-19  Paul Smith  <psmith@gnu.org>

        * variable.c: Align type of variable_changenum.

2016-03-13  Paul Smith  <psmith@gnu.org>

        [SV 45728] Detect changes in .VARIABLES more accurately.
        For performance, we only recompute .VARIABLES when (a) it's expanded
        and (b) when its value will change from a previous expansion.  To
        determine (b) we were checking the number of entries in the hash
        table which used to work until we started undefining entries: now if
        you undefine and redefine the same number of entries in between
        expanding .VARIABLES, it doesn't detect any change.  Instead, keep
        an increasing change number.
        * variables.c: Add variable_changenum.
        (define_variable_in_set, merge_variable_sets): Increment
        variable_changenum if adding a new variable to the global set.
        (undefine_variable_in_set): Increment variable_changenum if
        undefining a variable from the global set.
        (lookup_special_var): Test variable_changenum not the hash table.
        * tests/scripts/variables/special: Test undefining variables.

        * main.c(main): Disable output sync without parallel builds.

        [SV 46581] Pre-define .LOADED to avoid warnings.
        * main.c (main): Pre-define .LOADED as a default-level variable.
        * load.c (load_file): Set the value rather than append it.  Avoid
        adding an extra initial whitespace.
        * tests/scripts/features/load: Run with --warn-undefined-variables.

2016-03-13  Paul Smith  <psmith@gnu.org>

        [SV 44555] Use vfork() instead of fork() where available.
        Testing has shown that vfork() is actually significantly
        more efficient on systems where it's supported, even for
        copy-on-write implementations.  If make is big enough,
        duplicating the page tables is significant overhead.

        * configure.ac: Check for fork/vfork.
        * makeint.h: Include vfork.h and set up #define for it.
        * os.h, posixos.c (get_bad_stdin): For children who can't use
        the normal stdin file descriptor, get a broken one.
        * job.c (start_job_command): Avoid so many ifdefs and simplify
        the invocation of child_execute_job()
        (child_execute_job): move the fork operation here so it can
        return early for the parent process.  Switch to use vfork().
        * function.c (func_shell_base): Use new child_execute_job() and
        simplify ifdefs.
        * job.h, main.c, remote-cstms.c, vmsjobs.c, w32os.c: Update
        declarations and calls.

2016-03-09  Paul Smith  <psmith@gnu.org>

        * job.c (exec_command): [SV 47365] Show error on exec failure.

2016-03-08  Paul Smith  <psmith@gnu.org>

        [SV 46261] Use pselect() for jobserver where supported.
        * Makefile.am, configure.ac: Check for pselect() and sys/select.h.
        * main.c (main): Block SIGCHLD if we have pselect() support.
        * posixos.c (jobserver_acquire): If we support pselect() then use
        it to query the jobserver pipe, while also listening for SIGCHLD.
        Also pselect() supports a timeout so avoid alarm() calls.

        Clean up some compiler warnings.
        * commands.c, commands.h: Use unsigned char for flags.
        * dir.c: Use time_t and size_t, and char for a boolean value.
        * job.c: Use unsigned and char.
        * read.c: Return a signed type since -1 is a valid return code.

        Extract jobserver implementation into OS-specific files.
        * os.h, posixos.c, w32/w32os.c: New files implementing jobserver.
        * job.c, job.h, main.c, makeint.h: Move content to new files.
        * w32/include/sub_proc.h, w32/subproc/sub_proc.c: Ditto.
        * Makefile.am: Build and package OS-specific files.
        * build_w32.bat, make_msvc_net2003.vcproj, README.W32.template:
        Update for new files, and clean up the build.
        * POTFILES.in, maintMakefile, NMakefile.template: Ditto.
        * w32/subproc/build.bat: Delete as unused.

        [SV 46261] Add more EINTRLOOP wrappers.
        This cannot be a perfect solution because there are always other
        possible places EINTR can happen, including external libraries
        such as gettext, Guile etc.

2016-02-29  Paul Smith  <psmith@gnu.org>

        * strcache.c (add_hugestring): [SV 46832] Support huge strings.
        The strcache was limited to strings of length 65535 or less,
        because the length is kept in an unsigned short.  To support
        huge strings add a new simple linked list, which we don't try
        to hash.

        * strcache.c (add_string): [SV 47071] Handle huge initial string.
        If the very first string added to the string cache is more than
        half the maximum size, we failed when moving the only strcache
        buffer to the full list.

        [SV 47151] Exit with 1 when checking recursive make -q
        * job.h (struct child): New bit to mark recursive command lines.
        * job.c (start_job_command): Set the recursive command line bit.
        (reap_children): If the child is a recursive command and it exits
        with 1 during question mode, don't print an error and exit with 1.
        * tests/scripts/options/dash-q: Add a regression test.

        * main.c (define_makeflags): Add parens to avoid GCC warning.

2016-02-29  Paul Smith  <psmith@gnu.org>

        * tests/scripts/features/archives: Handle deterministic archives.
        Newer versions of binutils allow ar to be compiled to generate
        "deterministic archives" by default: in this mode no timestamp
        information is generated in the static archive, which utterly
        breaks GNU make's archive updating capability.  Debian and Ubuntu
        have turned this feature on by default in their distributions
        which causes the regression tests to fail.

        Update the regression tests to check for the availability of the
        "U" option to ar which disables deterministic archives and allows
        GNU make's archive support to work properly again.

2016-02-28  Paul Smith  <psmith@gnu.org>

        Update Copyright statements for the new year.

        * doc/make.texi: [SV 47163] Fix typo in 'ifdef' documentation.

        * doc/make.texi: [SV 35455] Add more uses for Empty Recipes.

2015-11-07  Gisle Vanem  <gvanem@yahoo.no>

        Fix diagnostics on MS-Windows when environment is too large
                * w32/subproc/sub_proc.c (process_begin): Fix test of the error
                cause when the environment block is too large.

2015-10-27  Eli Zaretskii  <eliz@gnu.org>

        Update README.W32.template
        * README.W32.template: Update for latest developments.  Make it
        clear we don't recommend using HAVE_CASE_INSENSITIVE_FS in
        general.

        [SV 46304] Don't invoke C++ compiler on C sources on MS-Windows
        * default.c (default_variables) [HAVE_CASE_INSENSITIVE_FS]: Make
        COMPILE.C and LINK.C be synonyms for COMPILE.c and LINK.c,
        respectively.

2015-09-23  Eli Zaretskii  <eliz@gnu.org>

        [SV 45838] When invoking w32 programs, don't use free'd memory.
        * w32/subproc/sub_proc.c (process_begin): Freeing argv[0] makes
        the other argv[i] pointers invalid, so need to allocate a new
        array and copy argv[i] for i != 0 first, replacing argv[0] with
        the batch file name, before we can free argv[0].

2015-07-13  Paul Smith  <psmith@gnu.org>

        * implicit.c (pattern_search): [SV 43677] Mark files secondary.
        In order to fix SV 12267 we were marking the prerequisites of
        implicit (pattern) targets that existed elsewhere in the makefile
        as precious to keep them from being deleted as intermediate files.
        However this also keeps them from being deleted on error.  Instead
        mark them as secondary.
        * tests/scripts/targets/DELETE_ON_ERROR: Test DELETE_ON_ERROR.

2015-07-12  Paul Smith  <psmith@gnu.org>

        [SV 28092] Preserve the exit status of the $(shell...) function.
        Add a new variable .SHELLSTATUS which holds the exit status of the
        last-invoked shell function or != assignment.

        * NEWS, doc/make.texi: Document the change.
        * function.c (shell_completed, msdos_openpipe, func_shell_base): Add
        shell_completed() to handle the completion of the shell, by setting
        .SHELLSTATUS.  Call it where needed.
        * job.c (child_handler): Call shell_completed().
        * tests/scripts/functions/shell: Add tests for .SHELLSTATUS.

2015-07-12  Paul Smith  <psmith@gnu.org>

        * tests/scripts/misc/fopen-fail: [SV 42390] Increase test timeout.
        * Makefile.am (check-regression): Force ulimit -n for fopen-fail test.

        * job.c: [SV 43936] Check sigaction for error return.

        [SV 45049] Check for '$' being the last character in a string.
        * expand.c (variable_expand_string): Add a single '$' if '$' ends the
        string.
        * read.c (find_char_unquote, get_next_mword): Stop if '$' ends the
        string.
        * variable.c (parse_variable_definition): Ditto.

        * read.c (unescape_char): [SV 45050] Handle final backslashes.
        If the last thing in the string to be unescaped is a backslash,
        stop without reading beyond the end of the string.

        * strcache.c: [SV 45275] Handle very long strings.
        Our previous behavior for handling too-long strings involved
        increasing the size of the default string cache buffer, but the
        implementation was incomplete.  Instead, create a one-off large
        string cache entry and add it directly to the full cache list
        without changing the default buffer size.

2015-07-12  Duncan Moore  <duncan.moore@gmx.com>  (tiny change)

        * job.c [RISCOS]: Remove logic that is no longer required.

2015-07-12  Paul Smith  <psmith@gnu.org>

        * remake.c (update_file): [SV 44742] Keep double-colon rule status.
        Fix suggested by Everett Boyer <EvBoyer@aol.com>

2015-07-10  James Johnston  <johnstonj.public@codenest.com>  (tiny change)

        [SVN 45515] Check exit status of sub-make in subproc.bat
        * subproc.bat: Exit when sub-make invocation fails.

2015-07-10  Eli Zaretskii  <eliz@gnu.org>

        [SV 45515] Ignore Windows-specific build artifacts
        * .gitignore: Ignore *.exe, *.dll.a, *.lib, *pdb, and a few more MSVC
        specific artifacts.
        Suggested by James Johnston <johnstonj.public@codenest.com>

2015-02-28  Eli Zaretskii  <eliz@gnu.org>

        [SV 44348] Fix handling of shell widlcards on MS-Windows.
                * job.c (construct_command_argv_internal): If shell wildcard
                characters are found inside a string quoted with "..", give up the
                fast route and go through the shell.  Fixes Savannah bug #44348.

2015-01-27  John Malmberg  <wb8tyw@qsl.net>

        Fix bs-nl handling, exit and Environment for VMS.
        This fix required a complete rewrite of the command parser vmsjobs.c
        child_execute_job.  The old parser had too many incorrect assumptions
        about DCL commands and could not be repaired to extended.

        The parser now more closely parses VMS commands and handles quoted
        commands and redirection.  Command File mode has been improved, but can
        not fully support bs-nl syntax.

        VMS Unix shell simulation has been improved.

        * commands.c: vms_comma_separator is now a run-time setting.
        * function.c: vms_comma_separator is now a run-time setting.
        * function.c(func_basename_dir) now reports "[]" or "./" based on
          VMS crtl runtime setting.
        * job.c(start_job_command): VMS Handle empty commands propery.
        * main.c: Add VMS environment variables for run-time settings.
          * vms_legacy_behavior - Force older behavior.
          * vms_comma_separator - Commas or spaces for separators.
          * vms_unix_simulation - Enhanced Posix shell simulation features.
          * Detect if VMS CRTL is set to report Unix paths instead of VMS.
          * ':' and '>' are also MAP_DIRSEP on VMS.
        * makeint.h: Add VMS run-time option variables.
        * readme.vms: Update to current behavior.
        * variable.c(define_variable_in_set): Fix VMS Environment variable
          lookup.
        * variable.c(define_automatic_variables): Remove some VMS specific
          automatic variables and use the Unix ones instead.
        * vms_export_symbol.c: Set max symbol size correctly.
        * vmsjobs.c: child_execute_job() complete rewrite of VMS comand
          parsing.
        * vmsjobs.c(build_vms_cmd): VMS commmand building with shell simulation.

2014-12-27  Christian Boos  <cboos@edgewall.org>  (tiny change)

        Fix $(shell) on hosts with 64-bit pid_t.
        * function.c: Use pid_t for shell_function_pid.
        * job.c: Likewise.

2014-10-20  Paul Smith  <psmith@gnu.org>

        * main.c (main): [SV 43434] Handle NULL returns from ttyname().

2014-10-20  Benedikt Morbach  <benedikt.morbach@googlemail.com>  (tiny change)

        * tests/scripts/features/archives: [SV 43405] override AR variable.

2014-10-20  John Malmberg  <wb8tyw@qsl.net>

        Fix VMS implicit rules and UNIX paths.
        This fixes VMS implicit rules and UNIX style pathname handling.
        It also fixes some of the VMS style pathname handling, more work
        there will be needed later.
        TODO: There are other case insensitive platforms besides VMS.
        We need to find out why there is extra VMS code for this.  This
        indicates either the extra VMS code is not needed, or the case
        insensitive support may not be complete on the other case
        insensitive platforms.

        * default.c: Add missing definitions to default_suffix_rules[] and
        default_variables[].
        TODO: As it is important that VMS DCL mode definitions must always
        be a superset of UNIX definitions, a better way of maintaining the
        VMS DCL mode definitions should be devised.
        * dir.c (downcase_inplace): Add a reentrant downcase() routine.
        Add future support for VMS 8.2+ _USE_STD_STAT macro which will
        disable a lot of VMS specific code from compiling.
        (dir_file_exists_p): vmsify filename only if directory name has VMS
        directory delimiters.
        (file_exists_p): Handle both VMS and UNIX directories.
        (file_impossible): Handle both VMS and Unix directories.  Track
        whether a VMS format path is needed for the return value.
        * file.c (lookup_file): Check if vmsify is needed; handle UNIX paths.
        * implicit.c (pattern_search): Enable UNIX paths.
        * read.c (parse_file_seq): Enable UNIX paths.
        * remake.c (f_mtime): Fix gpath_search call for VMS paths.
        * rule.c (count_implicit_rule): Enable UNIX paths, Fix VMS paths.
        * vpath.c (selective_vpath_search): Enable UNIX paths.

2014-10-20  John Malmberg  <wb8tyw@qsl.net>

        Update README.VMS and move news to the NEWS file
        * NEWS: Merge in VMS history.
        * README.VMS: Remove VMS history, document current behavior and
        known issues.

2014-10-20  John Malmberg  <wb8tyw@qsl.net>

        [SV 41758]: Fix archive support for VMS.
        Upated to match change to run_make_tests and some future fixes to
        make on VMS.

        * arscan.c: Use ANSI compatible pragmas instead of VAX C extensions.
        * tests/scripts/features/archives: Fix tests to use VMS rules and
        answers when running on VMS and using DCL as a shell.
        * tests/scripts/features/vpath3: Fix epected answer on test when
        run on VMS.
        * tests/scripts/vms/library: (New) Test the VMS library rules that
        are not tested by existing tests.

2014-10-20  John Malmberg  <wb8tyw@qsl.net>

        [SV 42447]: VMS simulate exporting symbols
        This also includes fixing the most of the exit handling code for VMS.

        Self tests:
         Previously about 94 Tests in 36 categories fail.
         Now about 45 tests in 22 categories fail.

        Because some tests do not properly clean up, the number of tests that
        fail can vary by one or two test cases between consecutive runs.

        * Makefile.am: Add new VMS files.
        * job.c: add prototype for vms_strsignal().
        * job.c: (child_error): Remove VMS specific code as no longer needed.
        * job.c: (reap_children): The VMS specific code was setting the
        status to 0 instead of setting it to the proper exit status.
        * job.h: Add vms_launch_status to struct child.
        * main.c: (main): Use environment variables for options to use MCR
        * instead of a foreign command, and to always use command files for
        subprocesses.
        For VMS use (set_program_name) routine which is common to ports of
        other GNU packages to VMS to set the program name used internally.
        Use (vms_putenv_symbol) to set up symbols to be visible in child
        programs, including recursive make launched by execve()
        Start of Bash shell detection code for VMS.
        * makefile.com: Need nested_include=none for building on VMS search
        lists.  Add vms_progname, vms_exit, and vms_export_symbol.
        * makefile.vms: Need nested_include=none for building on VMS search
        lists.  Add vms_progname, vms_exit, vms_export_symbol.
        * makeint.h: Make sure non-standard "VMS" macro is defined.  Add
        prototypes for new VMS routines.  Remove VMS-specific failure codes.
        * vmsjobs.c: Add VMS POSIX exit code constants.
        (_is_unixy_shell): Detect Bash shell.
        (vms_strsignal): simulate strsignal() on VMS.
        (vmsHandleChildTerm): fix to properly report failed LIB$SPAWN() exit
        status codes.  Remove code that duplicated code in job.c.
        (child_execute_job): Export environment symbols before spawning a
        child and restore afterward unless option to use command files for
        subprocesses is set.  Improve handling of UNIX null commands ":".
        * vms_exit.c: Provides vms_exit() to detect if an exit code is UNIX
        or VMS, and converts the UNIX code into a VMS exit code.
        * vms_export_symbol.c: Routines to create DCL symbols that work like
        shell aliases or exported shell symbols and clean them up on exit.
        * vms_export_symbol_test.com: Unit test for vms_export_symbol.c
        * vms_progname.c: New file: VMS specific replace for progname.c that
        is used in some GNU projects.

2014-10-20  John Malmberg  <wb8tyw@qsl.net>

        Set up for running tests on VMS.
        * run_make_tests.pl: set $port_type to be 'VMS-DCL' when the test are
        run from the VMS DCL Interpreter.  When the tests are run from GNV
        on VMS, the $port_type will be 'UNIX'.
        * run_make_tests.com: VMS search list support.  This is needed for
        using a search list such as prj_root = lcl_root:,vms_root:,src_root:
        for building and testing.

2014-10-09  Paul Smith  <psmith@gnu.org>

        * configure.ac, NEWS, README.git: Set up for the next release.

2014-10-05  Paul Smith  <psmith@gnu.org>

        GNU Make release 4.1.

2014-10-02  Eli Zaretskii  <eliz@gnu.org>

        Fix Cygwin compilation error.
        * job.c (construct_command_argv_internal) [HAVE_DOS_PATHS]: Fix
        initializer for sh_chars_sh.
        Reported by Denis Excoffier<cygwin@Denis-Excoffier.org>.

2014-10-01  Gisle Vanem  <gvanem@yahoo.no>

        Fix last commit.

        * makeint.h (ftruncate): Define also for __WATCOMC__.

2014-10-01  Eli Zaretskii  <eliz@gnu.org>

        Avoid compilation warnings.
        * main.c (find_and_set_default_shell, main) [WINDOWS32]: Declare
        variables 'const char *' to avoid compiler warnings.
        * job.c (construct_command_argv_internal) [!NDEBUG]: Declare 'end'
        and set it only if NDEBUG is not defined, to avoid compiler
        warnings.

        Treat redirection of standard handles on Windows as it is done on Unix.
        * job.c (start_job_command) [WINDOWS32]: Compute outfd and errfd
        as on Posix platforms, and pass the results to process_easy.
        * function.c (windows32_openpipe) [WINDOWS32]: Accept an
        additional argument ERRFD and use it for redirecting the standard
        error handle passed to the subprocess.
        (func_shell_base) [WINDOWS32]: Pass the computed errfd to
        windows32_openpipe.

2014-09-30  Paul Smith  <psmith@gnu.org>

        Update Copyright statements for 2014.

        * tests/scripts/features/load: Avoid unused variable warnings.

        * loadapi.c (gmk_eval): Use C90 syntax.

2014-09-30  Hartmut Becker  <becker.ismaning@freenet.de>

        * job.c: fix make action continuation lines.
        * vmsjobs.c: fix writing DCL command files when trimming (white
          spaces and $ signs) especially after a split (command continuation).

2014-09-15  Bernhard Reutner-Fischer  <rep.dot.nop@gmail.com>  (tiny change)

        * configure.ac: Fix spacing in helptext of customs

2014-09-15  Eli Zaretskii  <eliz@gnu.org>

        Support MAKE_TERMOUT and MAKE_TERMERR on MS-Windows.
        * w32/compat/posixfcn.c (isatty, ttyname): New functions.
        * config.h.W32.template (HAVE_TTYNAME): Define.  Add a prototype
        for ttyname.

2014-09-15  Paul Smith  <psmith@gnu.org>

        * loadapi.c (gmk_eval): [SV 43221] Preserve var buff content for eval.

        * main.c, NEWS, doc/make.text: Rename MAKE_TTY* to MAKE_TERM*

2014-09-14  Paul Smith  <psmith@gnu.org>

        * main.c (main): Set MAKE_TTYOUT and MAKE_TTYERR.
        * configure.ac: Test for isatty() and ttyname()
        * makeint.h: provide a substitute for ttyname() if it's not available.
        * config.ami.template, config.h-vms.template, config.h.W32.template:
        define/undefine HAVE_ISATTY/HAVE_TTYNAME macros.
        * NEWS, doc/make.texi: Document these new variables.

2014-09-07  Paul Smith  <psmith@gnu.org>

        * tests/config-flags.pm.in, tests/scripts/features/archives: [SV 43046]
        Use the "ar" program detected by configure when running the test suite.

        * doc/make.texi: Clarify implicit rule lookup of phony targets
        Reported by Frank Heckenbach <f.heckenbach@fh-soft.de>

2014-09-07  Hartmut Becker  <becker.ismaning@freenet.de>

        Fix and enhance VMS library support.
        * ar.c: fix VMS library search for members, which do not have
        suffixes, aka filename extensions.
        * arscan.c: fix time conversion and library callback routines.
        * default.c: more suffixes and automatically create the VMS library
        if it doesn't exists.

        Enhance VMS exporting make environment variables.
        * config.h-vms.template: add feature macro USE_DCL_COM_FILE to always
        write a DCL command file, enabled by default.
        * vmsjobs.c: with USE_DCL_COM_FILE enabled write make variables as DCL
        symbol assignments into the command file.  This enables printing
        directory and make level info for recursive use of make. This also
        enables forced DCL symbol substitution in the actions.

        Fix VMS automatic variable expansion
        * function.c: add VMS code to func_notdir_suffix and func_basename_dir
        to work on comma separated lists; this fixes the expansion of
        $(^D), $(+D) and the F variants for VMS.

        * main.c [VMS]: Say that parallel jobs (-j) are not supported on VMS

        Enhance/fix VMS ONESHELL implementation and command execution
        * job.c, vmsjobs.c: fix some double quote and new line handling;
        implement ONESHELL with writing multiple lines into one DCL command
        procedure; in ONESHELL allow VMS/make internal redirection only on the
        first line; fix the created DCL command procedure, which didn't abort
        on errors; return correct exit status from the DCL command procedure;
        preserve current procedure verification; make the generated command
        procedure more robust.

        Enhance/fix VMS setting of program name, MAKE/MAKE_COMMAND variables
        * default.c, main.c, makeint.h, vmsfunctions.c: prefix argv[0] with
        "mcr " for MAKE/MAKE_COMMAND and set the program name to the image
        filename (without the .exe;version)
        * vmsfunctions.c: remove obsolete code
        * vmsify: use xmalloc

        Enhance/fix VMS exit code handling.
        * commands.c, function.c, hash.c, job.c, main.c, output.c:
        use MAKE exit codes.
        * makeint.h: encode make exit codes so that they are VMS compatible.
        * job.c: check child exit code for VMS style exit codes.
        * vmsjobs.c: save and return VMS style exit code.

        Enhance/fix VMS multi-line support.
        * job.c: split the command line at a newline.
        * default.c, vmsjobs.c: change ECHO variable to a pseudo builtin,
        which ensures that the VMS/DCL ECHO ("write sys$output") is used
        and is correctly quoted.
        * vmsjobs.c: remove unused builtin 'rm'.

        * config_flags_pm.com, [RENAMED test_make.com] run_make_tests.com:
        Moved into tests directory.

        Enhance/fix VMS build environment
        * config.h-vms.template: make sure the CRTL version is known
        * makefile.com: always compile/link the guile module, remove VAXCRTL
        parameter, new LIST parameter
        * makefile.vms: always compile/link the guile module, use more
        complete dependencies
        * prepare_vms.com: helper to create a VMS config file when building
        from a snapshot of the repository

2014-09-07  Paul Smith  <psmith@gnu.org>

        * configure.ac, maintMakefile, w32/Makefile.am: Fix autotools issues.
        Reported by Paul Eggert <eggert@cs.ucla.edu>

2014-08-30  Eli Zaretskii  <eliz@gnu.org>

        Change the order of "makefile" and "Makefile" to match the manual.

        Fix regression with "makefile" not being found on MS-Windows.
        * read.c (read_all_makefiles) [WINDOWS32]: Recognize "makefile",
        all-lowercase, as a makefile.  Reported by Michael Waeber
        <waeber@gmail.com>.

2014-07-16  Eli Zaretskii  <eliz@gnu.org>

        Fix compilation on MS-Windows.
        * makeint.h [WINDOWS32]: Don't declare 'program' as 'const char *',
        since it is modified in 'main'.

2014-07-12  Eli Zaretskii  <eliz@gnu.org>

        [SV 42695] Fix compilation error on MS-Windows.
        * main.c [WINDOWS32]: Don't declare 'program' as 'const char *',
        since it is modified in 'main'.

2014-07-12  Jonny Grant  <jg@jguk.org>  (tiny change)

        Fix defalt_makefiles[] for MS-Windows.
        * read.c (read_all_makefiles) [WINDOWS32]: Remove the redundant
        "makefile" and add "makefile.mak".

2014-07-07  Fredrik Fornwall  <fredrik@fornwall.net>  (tiny change)

        * arscan.c [ANDROID]: Android has no ar.h but supports archives.

2014-07-07  Paul Smith  <psmith@gnu.org>

        * read.c (eval): [SV 41677] Correct test for TAB vs. 8 spaces.

2014-07-07  Piotr Jaroszynski  <pjaroszynski@nvidia.com>  (tiny change)

        * output.c (pump_from_tmp): [SV 42378] Flush the output file regularly.

2014-07-07  John Malmberg  <wb8tyw@qsl.net>

        Update the regression test harness to support VMS.
        * config_flags_pm.com, test_make.com: set up and run the regression
        test environment on VMS.
        * tests/run_make_tests.pl [VMS]: Use an alternate rmdir()
        implementation on VMS.
        (run_make_with_options) [VMS]: Provide VMS-specific quoting and shell
        invocations.
        (set_more_defaults) [VMS]: Set default values when running on VMS.
        * tests/test_driver.pl (vms_get_process_logicals) [VMS]: Retrieve the
        proper values from %ENV on VMS.
        (resetENV) [VMS]: Use it.
        (toplevel) [VMS]: Fix a bug with opendir() on some logical_devices.
        (compare_output) [VMS]: Convert VMS test output to a "standard" format.
        (_run_command) [VMS]: Handle signals and exit codes the VMS way.
        (remove_directory_tree_inner) [VMS]: Unlink all versions of the file.

2014-07-07  Paul Smith  <psmith@gnu.org>

        * various: Assume ISO C89-compliant free() implementation.

        * maintMakefile, various: Improve constification of the codebase.

        [SV 41983] Support omitting the text argument to $(file ...)
        Reported by Tim Murphy <tnmurphy@gmail.com>
        * function.c (func_file): Only write TEXT if it is not NULL.
        * NEWS, doc/make.texi: Document the new feature
        * tests/scripts/functions/file: Verify that the no-text version of
          $(file ...) works and doesn't add a newline.

2014-05-13  Jacques Germishuys  <jacques.germishuys@gmail.com>

        NMakefile.template ($(OUTDIR)/posixfcn.obj): Fix a typo.

2014-05-01  Paul Smith  <psmith@gnu.org>

        [SV 42249] Propagate correct rule status results.
        * remake.c (update_file, update_file_1, check_dep): Return an enum
          update_status value instead of an int, and keep the highest value we
          find as we walk the graph so that the ultimate status is correct.
        * tests/scripts/options/dash-q: Add a test for updating prerequisites.

2014-02-08  Paul Smith  <psmith@gnu.org>

        * Rename MAP_PATHSEP to MAP_DIRSEP.

        * configure.ac: Fixup for newer autoconf/automake

2014-02-08  Ray Donnelly  <mingw.android@gmail.com>  (tiny change)

        * output.c: Ensure space for final nul byte in fmtbuf.

2014-02-07  Gisle Vanem  <gvanem@yahoo.no>  (tiny change)

        Improve error reporting in the Windows port when env size is too large.
        w32/subproc/misc.c (arr2envblk): Compute and return the size of
        the environment passed to child process.

        w32/subproc/sub_proc.c (process_begin): If the call to
        CreateProcess failed with EINVAL, and the required environment
        size was larger than 32KB, assume it's a Windows XP limitation,
        and display an error message to that effect.

        w32/subproc/proc.h (arr2envblk): Update prototype.

2014-02-01  Paul Smith  <psmith@gnu.org>

        * job.c (set_child_handler_action_flags): [SV 41341]
        Ensure signal handler is in place before alarm(1).

2014-01-20  Alan Hourihane  <alanh@fairlite.co.uk>  (tiny change)

        * configure.ac: [SV 40790] Fix load autoconf variables.

2014-01-17  Pavel Fedin  <p.fedin@samsung.com>  (tiny change)

        Allow the EMX build to use output_sync.
        job.c (start_job_command): Move the child output diversion out
        of non-EMX branch.
        [__EMX__]: Don't use fixed FD_STDOUT and FD_STDERR in the call to
        child_execute_job.

2014-01-12  Paul Smith  <psmith@gnu.org>

        * commands.c: [SV 40789] Remove unneeded header dlfcn.h

        * main.c (die): Close output_context AND make_sync.
        die() can be invoked inside a separate output_context, if the
        $(error ...) function is expanded as part of a recipe.

2014-01-11  Pavel Fedin  <p.fedin@samsung.com>  (tiny change)

        Fix .LIBPATTERNS for MS-Windows builds.
        default.c (.LIBPATTERNS) [__CYGWIN__ || WINDOWS32]: Provide
        library patterns for MS-Windows.

2013-11-27  Paul Smith  <psmith@gnu.org>

        * w32/*: Remove TABs from the source code.
        I know whitespace commits are annoying, but having these TABs is
        causing me to miss things when I search through the code.  This
        doesn't try to change the w32 code to meet GNU coding standards.

        * main.c (decode_env_switches): Ensure we have enough space.
        Reported (with patch) by Gerte Hoogewerf <g.hoogewerf@gmail.com>

2013-11-27  Stephan T. Lavavej  <stl@nuwen.net>  (tiny change)

        Solve some Windows build issues.
        * main.c (main): Use ONS(), not OSN().
        (prepare_mutex_handle_string) [WINDOWS32]: Use %Ix formatting to
        support both 32bit and 64bit systems.
        * job.c (free_child, new_job): Use ONS(), not OSN().
        * w32/subproc/w32err.c (map_windws32_error_to_string): Use O() when
        calling fatal().

2013-11-24  Paul Smith  <psmith@gnu.org>

        * features/loadapi (test_expand): Allocate memory for the nul byte.

        * load.c (load_file): Reset the name length minus the symbol.

        * read.c (unescape_char): Use memmove() for overlapping memory.

        Fix memory leak during environment option decoding.
        * main.c (decode_switches): Always make a copy of option arguments.
        (decode_env_switches): Use a stack buffer to convert environment
        switches for parsing.

        [SV 40226] Add a new type of switch: single-string options
        * main.c (struct command_switch): Change the "string" types to "strlist"
        and make "string" be a single-valued string instead.
        (output_sync_option, jobserver_fds, sync_mutex): Change to string type.
        (decode_output_sync_flags): Handle single strings instead of lists.
        (prepare_mutex_handle_string): Ditto.
        (main): Ditto.
        (clean_jobserver): Ditto.
        (init_switches): Handle the new type.
        (decode_switches): Ditto.
        (define_makeflags): Ditto.

2013-11-23  Daniel Richard G  <skunk@iskunk.org>  (tiny change)

        * load.c: [SV 40515] Define RTLD_GLOBAL if not set.

2013-11-23  Paul Smith  <psmith@gnu.org>

        [SV 40361] Don't use vsnprintf(), which is an ISO C99 function.
        * output.c (error, fatal, message): Take an extra argument specifying
        how many bytes are used by the formatted arguments.
        (get_buffer): New function that allocates the requested buffer size.
        Remove msc_vsnprintf(), vfmtconcat(), and fmtconcat() as unneeded.
        * makeint.h: Declare various helper macros for generating output.
        * *.c: Change all error(), fatal(), message() calls to use the macros,
        or pass the extra length argument directly.

2013-10-27  Paul Smith  <psmith@gnu.org>

        * makeint.h (STOP_SET): [SV 40371] Cast to unsigned char.
        * tests/scripts/misc/utf8: Test variable names with characters >127.
        Fix suggested by Robert Bogomip <bob.bogo@milohedge.com>

2013-10-24  Gerte Hoogewerf  <g.hoogewerf@gmail.com>

        Fix MS Visual Studio NET2003 build.
        * make_msvc_net2003.vcproj: Do not exclude guile.c from compilation.

2013-10-23  Christian Boos  <cboos@edgewall.org>

        Fix SV bug #40227 with respect to stack size set for the MSVC build.
        * NMakefile.template (/STACK): Increase to 0x400000, mainly for
        the 64-bit builds.  Fixes SV bug #40227.
        (guile): Uncomment.

2013-10-23  Eli Zaretskii  <eliz@gnu.org>

        Fix the MS-Windows build: now guile.c must always be compiled in.
        * build_w32.bat: Always compile guile.c and link against guile.o.
          Reported by Alexey Pavlov <alexpux@gmail.com>.

        * makeint.h (guile_gmake_setup): Define prototype unconditionally,
        to avoid compiler warnings.

2013-10-22  Eli Zaretskii  <eliz@gnu.org>

        Fix Savannah bug #31150 with failures due to setting window title.
        * sub_proc.c (process_begin): Don't set startInfo.lpTitle, it
        reportedly causes SV bug #31150, and according to MSDN it's a
        no-no.

        Fix Savannah bug 40241 with Unixy file names as commands to MSYS shell.
        * sub_proc.c: Include filedef.h and variable.h.
        (process_begin): If exec_path was not found, but its first
        character is '/', assume there's some shell magic, and invoke the
        command through '$(SHELL) -c "COMMAND"'.  Fixes SV bug#40241.
        (make_command_line): Kludgey feature: if full_exec_path is "-c",
        assume that argv[0] is not to be skipped, as it holds the command
        string to be passed to the shell.

2013-10-20  Paul Smith  <psmith@gnu.org>

        * glob.c (glob) [SV 18123]: Cherry-pick glibc fix
        Apply commit a471e96a5352a5f0bde6d32dd36d33524811a2b1 from
        git://sourceware.org/git/glibc.git to fix
        https://sourceware.org/bugzilla/show_bug.cgi?id=10278

        * read.c (record_files): [SV 33034] Change fatal() to error()
        Allows deprecated syntax.  However we don't guarantee this syntax
        will continue to be legal in the future.
        Change suggested by David Boyce <david.s.boyce@gmail.com>

        * README.git: Add some missing release steps.

2013-10-19  Paul Smith  <psmith@gnu.org>

        [SV 40240] Use configure info to build load test shared libs
        * tests/config-flags.pm.in: A new file containing variable assignments
        for the test suite; these variables are set by configure to contain
        the values detected there for compilers, flags, etc.
        * tests/run_make_tests.pl: Require the config-flags.pm file
        * tests/scripts/features/load, tests/scripts/features/loadapi: Use the
        configure-provided values when building the shared test library.
        * configure.ac: Replace tests/config-flags.pm.in
        * Makefile.am: Make sure tests/config-flags.pm is up to date

        * maintMakefile (checkcfg.%): Add testing of build.sh

        [SV 40254] Modify build.sh to work properly with Guile support.
        * guile.c (guile_gmake_setup) [HAVE_GUILE]: Define a stub function
        when Guile support is not enabled.
        * main.c (main) [HAVE_GUILE]: Always invoke guile_gmake_setup().
        * Makefile.am: Make guile.c standard, not optional.
        * build.template: Add the Guile compiler and linker flags.

        * maintMakefile: Accept variable overrides from the environment.

        * NEWS: Fix version so we can build a distfile.

        * read.c (eval): Avoid GCC warning to add braces.

        * GNUMAKEFLAGS: Remove -O so it passes in NO_OUTPUT_SYNC mode.

2013-10-18  Christian Boos  <cboos@edgewall.org>

        Fix initialization of stringlist variables for jobserver_fds and sync_mutex.
         (tiny change)

         main.c (prepare_mutex_handle_string, main): Initialize
         stringlist variables with at least 2 members, as one member is not
         currently supported.

2013-10-18  Eli Zaretskii  <eliz@gnu.org>

        Fix MinGW64 problem with non-compliant vsnprintf.
         makeint.h (__USE_MINGW_ANSI_STDIO) [__MINGW64_VERSION_MAJOR]:
         Define for MinGW64, to force it to use an ANSI-compliant
         implementation of vsnprintf.  Reported by Christian Boos
         <cboos@edgewall.org>.

        Fix the MSVC build on MS-Windows.
         output.c (vsnprintf) [_MSC_VER]: Define, instead of defining
         snprintf, which isn't used.  Reported by Christian Boos
         <cboos@edgewall.org>.
         NMakefile.template (OBJS): Add load.obj and posixfcn.obj.
         ($(OUTDIR)/pathstuff.obj): New dependency.
         Suggested by Christian Boos <cboos@edgewall.org>.

2013-10-13  Paul Smith  <psmith@gnu.org>

        [SV 40139] Modify "missing separator" for better translation

        Add support for updating the GNU make web pages.
        Add makefile rules for updating the http://www.gnu.org/software/make
        web pages, including the online GNU make manual.

        Convert to auto-generated ChangeLog files.
        Rename existing ChangeLog files so they won't be distributed.
        Add targets to maintMakefile to generate ChangeLog from the Git
        repository.  This will require a version of gnulib be available.
        Because ChangeLog is auto-generated, we have to switch our
        automake mode to "foreign" or it will complain and fail.

        Set up for the next release.