3 * Obsolete features removed:
5 - Support for automatic de-ANSI-fication has been removed.
7 - The support for the "obscure" multilib feature has been removed
8 from Automake core (but remains available in the 'contrib/'
9 directory of the Automake distribution).
11 - Support for ".log -> .html" conversion and the check-html and
12 recheck-html targets has been removed from Automake core (but
13 remains available in the 'contrib/' directory of the Automake
16 - The deprecated `lzma' compression format for distribution archives
17 has been removed, in favor of `xz' and `lzip'.
19 - The obsolete AM_WITH_REGEX macro has been removed.
21 - The deprecated options `--output-dir', `--Werror' and `--Wno-error'
24 - The chapter on the history of Automake has been moved out of the
25 reference manual, into a new dedicated Texinfo file.
29 - New `cscope' target to build a cscope database for the source tree.
31 * Changes to Automake-generated testsuite harnesses:
33 - The new automake option 'serial-tests' has been introduced. It can
34 be used to explicitly instruct automake to use the older serial
35 testsuite harness. This is still the default at the moment, but it
36 might change in future versions.
38 - Test scripts that exit with status 99 to signal an "hard error" (e.g.,
39 and unexpected or internal error, or a failure to set up the test case
40 scenario) have their outcome reported as an 'ERROR' now. Previous
41 versions of automake reported such an outcome as a 'FAIL' (the only
42 difference with normal failures being that hard errors were counted
43 as failures even when the test originating them was listed in
46 - The testsuite summary displayed by the parallel-test harness has a
47 completely new format, that always list the numbers of passed, failed,
48 xfailed, xpassed, skipped and errored tests, even when these numbers
49 are zero (but using smart coloring when the color-tests option is in
52 - The default testsuite driver offered by the 'parallel-tests' option is
53 now implemented (partly at least) with the help of automake-provided
54 auxiliary scripts (e.g., `test-driver'), instead of relying entirely
55 on code in the generated Makefile.in.
56 This has two noteworthy implications. The first one is that projects
57 using the `parallel-tests' option should now either run automake with
58 the `--add-missing' option, or manually copy the `test-driver' script
59 into their tree. The second, and more important, implication is that
60 now, when the `parallel-tests' option is in use, TESTS_ENVIRONMENT can
61 not be used anymore to define a test runner, and the command specified
62 in LOG_COMPILER (and <ext>_LOG_COMPILER) must be a *real* executable
63 program or script. For example, this is still a valid usage (albeit
67 if test -n '$(STRICT_TESTS)'; then \
72 LOG_COMPILER = $(SHELL) $$maybe_errexit
74 while this is not anymore:
77 $(SHELL) `test -n '$(STRICT_TESTS_CHECKING)' && echo ' -e'`
82 run_with_perl_or_shell () \
84 if grep -q '^#!.*perl' $$1; then
90 LOG_COMPILER = run_with_per_or_shell
92 - The package authors can now use customary testsuite drivers within
93 the framework provided by the 'parallel-tests' testsuite harness.
94 Consistently with the existing syntax, this can be done by defining
95 special makefile variables `LOG_DRIVER' and `<ext>_LOG_DRIVER'.
97 - A new developer-reserved variable `AM_TESTS_FD_REDIRECT' can be used
98 to redirect/define file descriptors used by the test scripts.
100 - The parallel-tests harness generates now, in addition the `.log' files
101 holding the output produced by the test scripts, a new set of `.trs'
102 files, holding "metadata" derived by the execution of the test scripts;
103 among such metadata are the outcomes of the test cases run by a script.
105 - Initial and still experimental support for the TAP test protocol is
108 * Changes to Yacc and Lex support:
110 - C source and header files derived from non-distributed Yacc and/or
111 Lex sources are now removed by a simple "make clean" (while they were
112 previously removed only by "make maintainer-clean").
114 - Slightly backward-incompatible change, relevant only for use of Yacc
115 with C++: the extensions of the header files produced by the Yacc
116 rules are now modelled after the extension of the corresponding
117 sources. For example, yacc files named "foo.y++" and "bar.yy" will
118 produce header files named "foo.h++" and "bar.hh" respectively, where
119 they would have previously produced header files named simply "foo.h"
120 and "bar.h". This change offers better compatibility with `bison -o'.
122 * Miscellaneous changes:
124 - Automake has a new option '--print-libdir' that prints the path of the
125 directory containing the Automake-provided scripts and data files.
127 - The `dist' and `dist-all' targets now can run compressors in parallel.
129 - Automake can now generate silenced rules for texinfo outputs.
131 - Some auxiliary files that are automatically distributed by Automake
132 (e.g., `install-sh', or the `depcomp' script for packages compiling
133 C sources) might now be listed in the DIST_COMMON variable in many
134 Makefile.in files, rather than in the top-level one.
136 - Messages of types warning or error from `automake' and `aclocal'
137 are now prefixed with the respective type, and presence of -Werror
140 - Automake's early configure-time sanity check now tries to avoid
141 sleeping for a second, which slowed down cached configure runs
142 noticeably. In that case, it will check back at the end of the
143 configure script to ensure that at least one second has passed, to
144 avoid time stamp issues with makefile rules rerunning autotools
147 - For programs and libraries, automake now detect EXTRA_foo_DEPENDENCIES
148 and adds them to the normal list of dependencies, but without
149 overwriting the foo_DEPENDENCIES variable, which is normally computed
152 - The warnings in the category `extra-portability' are now enabled by
153 `-Wall'. In previous versions, one has to use `-Wextra-portability'
158 - Various minor bugfixes.
160 * Bugs introduced by 1.11:
162 - The AM_COND_IF macro also works if the shell expression for the
163 conditional is no longer valid for the condition.
165 - The automake-provided parallel testsuite harness does not fail anymore
166 with BSD make used in parallel mode when there are test scripts in a
167 subdirectory, like in:
169 TESTS = sub/foo.test sub/bar.test
171 * Long-standing bugs:
173 - Automake's own build system finally have a real "installcheck" target.
175 - Files listed with the AC_REQUIRE_AUX_FILE macro in configure.ac are
176 now automatically distributed also if the directory of the auxiliary
177 files coincides with the top-level directory.
179 - Automake now detects the presence of the `-d' flag in the various
180 `*YFLAGS' variables even when their definitions involve indirections
181 through other variables, such as in:
183 AM_YFLAGS = $(foo_opts)
185 - Automake now complains if a `*YFLAGS' variable has any conditional
186 content, not only a conditional definition.
188 - Explicit enabling and/or disabling of Automake warning categories
189 through the `-W...' options now always takes precedence over the
190 implicit warning level implied by Automake strictness (foreign, gnu
191 or gnits), regardless of the order in which such strictness and
192 warning flags appear. For example, a setting like:
193 AUTOMAKE_OPTIONS = -Wall --foreign
194 will cause the warnings in category `portability' to be enabled, even
195 if those warnings are by default disabled in `foreign' strictness.
200 * WARNING: Future backward-incompatibilities!
202 - The obsolescent AM_WITH_REGEX macro has been deprecated, since the
203 GNU rx library has been decommissioned.
205 - The `lzma' compression format for distribution archives has been
206 deprecated in favor of `xz' and `lzip'.
208 - The `--acdir' option of aclocal is deprecated, and will probably be
209 removed in the next major Automake release (1.12). [FIXME]
211 - The exact order in which the directories in the aclocal macro
212 search path are looked up is probably going to be changed in the
213 next Automake release (1.12). [FIXME]
215 * Miscellaneous changes:
217 - Automake's own build system is more silent by default, making use of
218 the 'silent-rules' option.
220 - The master copy of the `gnupload' script is now maintained in gnulib,
223 - The `missing' script doesn't try to wrap calls to `tar' anymore.
225 - "make dist" doesn't wrap `tar' invocations with the `missing' script
226 anymore. Similarly, the obsolescent variable `$(AMTAR)' (which you
227 shouldn't be using BTW ;-) does not invoke the missing script anymore
228 to wrap tar, but simply invokes the `tar' program itself.
230 - "make dist" can now create lzip-compressed tarballs.
232 - In the Automake info documentation, the Top node and the nodes about
233 the invocation of the automake and aclocal programs have been renamed;
234 now, calling "info automake" will open the Top node, while calling
235 "info automake-invocation" and "info aclocal-invocation" will access
236 the nodes about the invocation of respectively automake and aclocal.
238 - Automake is now distributed as a gzip-compressed and an xz-compressed
239 tarball. Previously, bzip2 was used instead of xz.
241 - The last relics of Python 1.5 support have been removed from the
242 AM_PATH_PYTHON macro.
244 Bugs fixed in 1.11.2a:
246 * Long-standing bugs:
248 - The "deleted header file problem" for *.am files is avoided by stub
249 rules. This allows `make' to trigger a rerun of `automake' also if
250 some previously needed `.am' file has been removed.
252 - The `silent-rules' option now generates working makefiles even
253 for the uncommon `make' implementations that do not support the
254 nested-variables extension to POSIX 2008. For such `make'
255 implementations, whether a build is silent is determined at
256 configure time, and cannot be overridden at make time with
257 `make V=0' or `make V=1'.
259 - Vala support now works better in VPATH setups.
264 * Changes to aclocal:
266 - The `--acdir' option is deprecated. Now you should use the new options
267 `--automake-acdir' and `--system-acdir' instead.
269 - The `ACLOCAL_PATH' environment variable is now interpreted as a
270 colon-separated list of additional directories to search after the
271 automake internal acdir (by default ${prefix}/share/aclocal-APIVERSION)
272 and before the system acdir (by default ${prefix}/share/aclocal).
274 * Miscellaneous changes:
276 - The Automake support for automatic de-ANSI-fication has been
279 - The `lzma' compression scheme and associated automake option `dist-lzma'
280 is obsoleted by `xz' and `dist-xz' due to upstream changes.
282 - You may adjust the compression options used in dist-xz and dist-bzip2.
283 The default is now merely -e for xz, but still -9 for bzip; you may
284 specify a different level via the XZ_OPT and BZIP2 envvars respectively.
285 E.g., "make dist-xz XZ_OPT=-7" or "make dist-bzip2 BZIP2=-5"
287 - The `compile' script now converts some options for MSVC for a better
288 user experience. Similarly, the new `ar-lib' script wraps Microsoft lib.
290 - The py-compile script now accepts empty arguments passed to the options
291 `--destdir' and `--basedir', and complains about unrecognized options.
292 Moreover, a non-option argument or a special `--' argument terminates
295 - A developer that needs to pass specific flags to configure at "make
296 distcheck" time can now, and indeed is advised to, do so by defining
297 the developer-reserved makefile variable AM_DISTCHECK_CONFIGURE_FLAGS,
298 instead of the old DISTCHECK_CONFIGURE_FLAGS.
299 The DISTCHECK_CONFIGURE_FLAGS variable should now be reserved for the
300 user; still, the old Makefile.am files that used to define it will
301 still continue to work as before.
303 - New macro AM_PROG_AR that looks for an archiver and wraps it in the new
304 'ar-lib' auxiliary script if the selected archiver is Microsoft lib.
305 This new macro is required for LIBRARIES and LTLIBRARIES when automake
306 is run with -Wextra-portability and -Werror.
308 - When using DejaGnu-based testsuites, the user can extend the `site.exp'
309 file generated by automake-provided rules by defining the special make
310 variable `$(EXTRA_DEJAGNU_SITE_CONFIG)'.
312 - The `install-info' rule can now be instructed not to create/update
313 the `${infodir}/dir' file, by exporting the new environment variable
314 `AM_UPDATE_INFO_DIR' to the value "no".
316 Bugs fixed in 1.11.2:
318 * Bugs introduced by 1.11.2:
320 - Automake now correctly recognizes the prefix/primary combination
321 `pkglibexec_SCRIPTS' as valid.
323 * Bugs introduced by 1.11:
325 - The parallel-tests driver no longer produces erroneous results with
326 Tru64/OSF 5.1 sh upon unreadable log files.
328 - The `parallel-tests' test driver does not report spurious successes
329 when used with concurrent FreeBSD make (e.g., "make check -j3").
331 - When the parallel-tests driver is in use, automake now explicitly
332 rejects invalid entries and conditional contents in TEST_EXTENSIONS,
333 instead of issuing confusing and apparently unrelated error messages
334 (e.g., "non-POSIX variable name", "bad characters in variable name",
335 or "redefinition of TEST_EXTENSIONS), or even, in some situations,
336 silently producing broken `Makefile.in' files.
338 - The `silent-rules' option now truly silences all compile rules, even
339 when dependency tracking is disabled. Also, when `silent-rules' is
340 not used, `make' output no longer contains spurious backslash-only
341 lines, thus once again matching what Automake did before 1.11.
343 - The AM_COND_IF macro also works if the shell expression for the
344 conditional is no longer valid for the condition.
346 * Long-standing bugs:
348 - The order of Yacc and Lex flags is fixed to be consistent with other
349 languages: $(AM_YFLAGS) comes before $(YFLAGS), and $(AM_LFLAGS) before
350 $(LFLAGS), so that the user variables override the developer variables.
352 - "make distcheck" now correctly complains also when "make uninstall"
353 leaves one and only one file installed in $(prefix).
355 - A "make uninstall" issued before a "make install", or after a mere
356 "make install-data" or a mere "make install-exec" does not spuriously
359 - Automake now warns about more primary/directory invalid combinations,
360 such as "doc_LIBRARIES" or "pkglib_PROGRAMS".
362 - Rules generated by Automake now try harder to not change any files when
363 `make -n' is invoked. Fixes include compilation of Emacs Lisp, Vala, or
364 Yacc source files and the rule to update config.h.
366 - Several scripts and the parallel-tests testsuite driver now exit with
367 the right exit status upon receiving a signal.
369 - A per-Makefile.am setting of -Werror does not erroneously carry over
370 to the handling of other Makefile.am files.
372 - The code for automatic dependency tracking works around a Solaris
373 make bug triggered by sources containing repeated slashes when the
374 `subdir-objects' option was used.
376 - The makedepend and hp depmodes now work better with VPATH builds.
378 - Java sources specified with check_JAVA are no longer compiled for
379 "make all", but only for "make check".
381 - An usage like "java_JAVA = foo.java" will now cause Automake to warn
382 and error out if `javadir' is undefined, instead of silently producing
383 a broken Makefile.in.
385 - aclocal and automake now honour the configure-time definitions of
386 AUTOCONF and AUTOM4TE when they spawn autoconf or autom4te processes.
388 - The `install-info' recipe no longer tries to guess whether the
389 `install-info' program is from Debian or from GNU, and adaptively
390 change its behaviour; this has proven to be frail and easy to
393 Bugs fixed in 1.11.1:
395 - Lots of minor bugfixes.
397 * Bugs introduced by 1.11:
399 - The `parallel-tests' test driver works around a GNU make 3.80 bug with
400 trailing white space in the test list (`TESTS = foo $(EMPTY)').
402 * Long standing bugs:
404 - On Darwin 9, `pythondir' and `pyexecdir' pointed below `/Library/Python'
405 even if the `--prefix' argument pointed outside of a system directory.
406 AM_PATH_PYTHON has been fixed to ignore the value returned from python's
407 `get_python_lib' function if it points outside the configured prefix,
408 unless the `--prefix' argument was either `/usr' or below `/System'.
410 - The testsuite does not try to change the mode of `ltmain.sh' files from
411 a Libtool installation (symlinked to test directories) any more.
413 - AM_PROG_GCJ uses AC_CHECK_TOOLS to look for `gcj' now, so that prefixed
414 tools are preferred in a cross-compile setup.
416 - The distribution is tarred up with mode 755 now by the `dist*' targets.
417 This fixes a race condition where untrusted users could modify files
418 in the $(PACKAGE)-$(VERSION) distdir before packing if the toplevel
419 build directory was world-searchable. This is CVE-2009-4029.
423 * Version requirements:
425 - Autoconf 2.62 or greater is required.
427 * Changes to aclocal:
429 - The autoconf version check implemented by aclocal in aclocal.m4
430 (and new in Automake 1.10) is degraded to a warning. This helps
431 in the common case where the Autoconf versions used are compatible.
433 * Changes to automake:
435 - The automake program can run multiple threads for creating most
436 Makefile.in files concurrently, if at least Perl 5.7.2 is available
437 with interpreter-based threads enabled. Set the environment variable
438 AUTOMAKE_JOBS to the maximum number of threads to use, in order to
439 enable this experimental feature.
441 * Changes to Libtool support:
443 - Libtool generic flags are now passed to the install and uninstall
446 - distcheck works with Libtool 2.x even when LT_OUTPUT is used, as
447 config.lt is removed correctly now.
451 - subdir-object mode works now with Fortran (F77, FC, preprocessed
452 Fortran, and Ratfor).
454 - For files with extension .f90, .f95, .f03, or .f08, the flag
455 $(FCFLAGS_f[09]x) computed by AC_FC_SRCEXT is now used in compile rules.
457 - Files with extension .sx are also treated as preprocessed assembler.
459 - The default source file extension (.c) can be overridden with
460 AM_DEFAULT_SOURCE_EXT now.
462 - Python 3.0 is supported now, Python releases prior to 2.0 are no
465 - AM_PATH_PYTHON honors python's idea about the site directory.
467 - There is initial support for the Vala programming language, when using
470 * Miscellaneous changes:
472 - Automake development is done in a git repository on Savannah now, see
474 http://git.sv.gnu.org/gitweb/?p=automake.git
476 A read-only CVS mirror is provided at
478 cvs -d :pserver:anonymous@pserver.git.sv.gnu.org:/automake.git \
479 checkout -d automake HEAD
481 - "make dist" can now create xz-compressed tarballs,
482 as well as (deprecated?) lzma-compressed tarballs.
484 - `automake --add-missing' will by default install the GPLv3 file as
485 COPYING if it is missing. It will also warn that the license file
486 should be added to source control. Note that Automake will never
487 overwrite an existing COPYING file, even when the `--force-missing'
490 - The manual is now distributed under the terms of the GNU FDL 1.3.
492 - Automake ships and installs man pages for automake and aclocal now.
494 - New shorthand `$(pkglibexecdir)' for `$(libexecdir)/@PACKAGE@'.
496 - install-sh supports -C, which does not update the installed file
497 (and its time stamps) if the contents did not change.
499 - The `gnupload' script has been revamped.
501 - The `depcomp' and `compile' scripts now work with MSVC under MSYS.
503 - The targets `install' and `uninstall' are more efficient now, in that
504 for example multiple files from one Automake variable such as
505 `bin_SCRIPTS' are copied in one `install' (or `libtool --mode=install')
506 invocation if they do not have to be renamed.
508 Both install and uninstall may sometimes enter (`cd' into) the target
509 installation directory now, when no build-local scripts are used.
511 Both install and uninstall do not fail anymore but do nothing if an
512 installation directory variable like `bindir' is set to the empty string.
514 For built-in rules, `make install' now fails reliably if installation
515 of a file failed. Conversely, `make uninstall' even succeeds when
516 issued multiple times.
518 These changes may need some adjustments from users: For example,
519 some `install' programs refuse to install multiple copies of the
520 same file in one invocation, so you may need to remove duplicate
521 entries from file lists.
523 Also, within one set of files, say, nobase_data_DATA, the order of
524 installation may be changed, or even unstable among different hosts,
525 due to the use of associative arrays in awk. The increased use of
526 awk matches a similar move in Autoconf to provide for better scaling.
528 Further, most undocumented per-rule install command variables such as
529 binSCRIPT_INSTALL have been removed because they are not needed any
530 more. Packages which use them should be using the appropriate one of
531 INSTALL_{DATA,PROGRAM,SCRIPT} or their install_sh_{DATA,PROGRAM,SCRIPT}
532 counterpart, depending on the type of files and the need for automatic
533 target directory creation.
535 - The "deleted header file problem" for *.m4 files is avoided by
536 stub rules. This allows `make' to trigger a rerun of `aclocal'
537 also if some previously needed macro file has been removed.
539 - Rebuild rules now also work for a removed `subdir/Makefile.in' in
540 an otherwise up to date tree.
542 - The `color-tests' option causes colored test result output on terminals.
544 - The `parallel-tests' option enables a new test driver that allows for
545 parallel test execution, inter-test dependencies, lazy test execution
546 for unit-testing, re-testing only failed tests, and formatted result output
547 as RST (reStructuredText) and HTML. Enabling this option may require some
548 changes to your test suite setup; see the manual for details.
550 - The `silent-rules' option enables Linux kernel-style silent build output.
551 This option requires the widely supported but non-POSIX `make' feature
552 of recursive variable expansion, so do not use it if your package needs
553 to build with `make' implementations that do not support it.
555 To enable less verbose build output, the developer has to use the Automake
556 option `silent-rules' in `AM_INIT_AUTOMAKE', or call the `AM_SILENT_RULES'
557 macro. The user may then set the default verbosity by passing the
558 `--enable-silent-rules' option to `configure'. At `make' run time, this
559 default may be overridden using `make V=0' for less verbose, and `make V=1'
560 for backward-compatible verbose output.
562 - New prefix `notrans_' for manpages which should not be transformed
563 by --program-transform.
565 - New macro AM_COND_IF for conditional evaluation and conditional
568 - For AC_CONFIG_LINKS, if source and destination are equal, do not
569 remove the file in a non-VPATH build. Such setups work with Autoconf
572 - AM_MAINTAINER_MODE now allows for an optional argument specifying
575 - AM_SUBST_NOTMAKE may prevent substitution of AC_SUBSTed variables,
576 useful especially for multi-line values.
578 - Automake's early configure-time sanity check now diagnoses an
579 unsafe absolute source directory name and makes configure fail.
581 - The Automake macros and rules cope better with whitespace in the
582 current directory name, as long as the relative path to `configure'
583 does not contain whitespace. To this end, the values of `$(MISSING)'
584 and `$(install_sh)' may contain suitable quoting, and their expansion
585 might need `eval'uation if used outside of a makefile. These
586 undocumented variables may be used in several documented macros such
587 as $(AUTOCONF) or $(MAKEINFO).
591 * Long-standing bugs:
593 - Fix aix dependency tracking for libtool objects.
595 - Work around AIX sh quoting issue in AC_PROG_CC_C_O, leading to
596 unnecessary use of the `compile' script.
598 - For nobase_*_LTLIBRARIES with nonempty directory components, the
599 correct `-rpath' argument is used now.
601 - `config.status --file=Makefile depfiles' now also works with the
602 extra quoting used internally by Autoconf 2.62 and newer
603 (it used to work only without the `--file=' bit).
605 - The `missing' script works better with versioned tool names.
607 - Semantics for `missing help2man' have been revamped:
609 Previously, if `help2man' was not present, `missing help2man' would have
610 the following semantics: if some man page was out of date but present, then
611 a warning would be printed, but the exit status was 0. If the man page was
612 not present at all, then `missing' would create a replacement man page
613 containing an error message, and exit with a status of 2. This does not play
614 well with `make': the next run will see this particular man page as being up
615 to date, and will only error out on the next generated man page, if any;
616 repeat until all pages are done. This was not desirable.
618 These are the new semantics: if some man page is not present, and help2man
619 is not either, then `missing' will warn and generate the replacement page
620 containing the error message, but exit successfully. However, `make dist'
621 will ensure that no such bogus man pages are packaged into a tarball.
623 - Targets provided by automake behave better with `make -n', in that they
624 take care not to create files.
626 - `config.status Makefile... depfiles' works fine again in the presence of
627 disabled dependency tracking.
629 - The default no-op recursive rules for these targets also work with BSD make
630 now: html, install-html, install-dvi, install-pdf, install-pdf, install-info.
632 - `make distcheck' works also when both a directory and some file below it
633 have been added to a distribution variable, such as EXTRA_DIST or *_SOURCES.
635 - Texinfo dvi, ps, pdf, and html output files are not removed upon
636 `make mostlyclean' any more; only the LaTeX by-products are.
638 - Renamed objects also work with the `subdir-objects' option and
639 source file languages which Automake does not know itself.
641 - `automake' now correctly complains about variable assignments which are
642 preceded by a comment, extend over multiple lines with backslash-escaped
643 newlines, and end in a comment sign. Previous versions would silently
644 and wrongly ignore such assignments completely.
646 * Bugs introduced by 1.10:
648 - Fix output of dummy dependency files in presence of post-processed
649 Makefile.in's again, but also cope with long lines.
651 - $(EXEEXT) is automatically appended to filenames of XFAIL_TESTS
652 that have been declared as programs in the same Makefile.
653 This is for consistency with the analogous change to TESTS in 1.10.
655 - Fix order of standard includes to again be `-I. -I$(srcdir)',
656 followed by directories containing config headers.
660 * Version requirements:
662 - Autoconf 2.60 or greater is required.
664 - Perl 5.6 or greater is required.
666 * Changes to aclocal:
668 - aclocal now also supports -Wmumble and -Wno-mumble options.
670 - `dirlist' entries (for the aclocal search path) may use shell
671 wildcards such as `*', `?', or `[...]'.
673 - aclocal supports an --install option that will cause system-wide
674 third-party macros to be installed in the local directory
675 specified with the first -I flag. This option also uses #serial
676 lines in M4 files to upgrade local macros.
678 The new aclocal options --dry-run and --diff help to review changes
679 before they are installed.
681 - aclocal now outputs an autoconf version check in aclocal.m4 in
682 projects using automake.
684 For a few years, automake and aclocal have been calling autoconf
685 (or its underlying engine autom4te) to accurately retrieve the
686 data they need from configure.ac and its siblings. Doing so can
687 only work if all autotools use the same version of autoconf. For
688 instance a Makefile.in generated by automake for one version of
689 autoconf may stop working if configure is regenerated with another
690 version of autoconf, and vice versa.
692 This new version check ensures that the whole build system has
693 been generated using the same autoconf version.
695 * Support for new Autoconf macros:
697 - The new AC_REQUIRE_AUX_FILE Autoconf macro is supported.
699 - If `subdir-objects' is set, and AC_CONFIG_LIBOBJ_DIR is specified,
700 $(LIBOBJS), $(LTLIBOBJS), $(ALLOCA), and $(LTALLOCA) can be used
701 in different directories. However, only one instance of such a
702 library objects directory is supported.
704 * Change to Libtool support:
706 - Libtool generic flags (those that go before the --mode=MODE option)
707 can be specified using AM_LIBTOOLFLAGS and target_LIBTOOLFLAGS.
709 * Yacc and Lex changes:
711 - The rebuild rules for distributed Yacc and Lex output will avoid
712 overwriting existing files if AM_MAINTAINER_MODE and maintainer-mode
715 - ylwrap is now always used for lex and yacc source files,
716 regardless of whether there is more than one source per directory.
720 - Preprocessed assembler (*.S) compilation now honors CPPFLAGS,
721 AM_CPPFLAGS and per-target _CPPFLAGS, and supports dependency
722 tracking, unlike non-preprocessed assembler (*.s).
724 - subdir-object mode works now with Assembler. Automake assumes
725 that the compiler understands `-c -o'.
727 - Preprocessed assembler (*.S) compilation now also honors
728 $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES).
730 - Improved support for Objective C:
731 - Autoconf's new AC_PROG_OBJC will enable automatic dependency tracking.
732 - A new section of the manual documents the support.
734 - New support for Unified Parallel C:
735 - AM_PROG_UPC looks for a UPC compiler.
736 - A new section of the manual documents the support.
738 - Per-target flags are now correctly handled in link rules.
740 For instance maude_CFLAGS correctly overrides AM_CFLAGS; likewise
741 for maude_LDFLAGS and AM_LDFLAGS. Previous versions bogusly
742 preferred AM_CFLAGS over maude_CFLAGS while linking, and they
743 used both AM_LDFLAGS and maude_LDFLAGS on the same link command.
745 The fix for compiler flags (i.e., using maude_CFLAGS instead of
746 AM_CFLAGS) should not hurt any package since that is how _CFLAGS
747 is expected to work (and actually works during compilation).
749 However using maude_LDFLAGS "instead of" AM_LDFLAGS rather than
750 "in addition to" breaks backward compatibility with older versions.
751 If your package used both variables, as in
753 AM_LDFLAGS = common flags
755 a_LDFLAGS = more flags
758 and assumed *_LDFLAGS would sum up, you should rewrite it as
760 AM_LDFLAGS = common flags
762 a_LDFLAGS = $(AM_LDFLAGS) more flags
765 This new behavior of *_LDFLAGS is more coherent with other
766 per-target variables, and the way *_LDFLAGS variables were
767 considered internally.
769 * New installation targets:
771 - New targets mandated by GNU Coding Standards:
776 By default they will only install Texinfo manuals.
777 You can customize them with *-local variants:
783 - The undocumented recursive target `uninstall-info' no longer exists.
784 (`uninstall' is in charge of removing all possible documentation
785 flavors, including optional formats such as dvi, ps, or info even
786 when `no-installinfo' is used.)
788 * Miscellaneous changes:
790 - Automake no longer complains if input files for AC_CONFIG_FILES
791 are specified using shell variables.
793 - clean, distribution, or rebuild rules are normally disabled for
794 inputs and outputs of AC_CONFIG_FILES, AC_CONFIG_HEADERS, and
795 AC_CONFIG_LINK specified using shell variables. However, if these
796 variables are used as ${VAR}, and AC_SUBSTed, then Automake will
797 be able to output rules anyway.
798 (See the Automake documentation for AC_CONFIG_FILES.)
800 - $(EXEEXT) is automatically appended to filenames of TESTS
801 that have been declared as programs in the same Makefile.
802 This is mostly useful when some check_PROGRAMS are listed in TESTS.
804 - `-Wportability' has finally been turned on by default for `gnu' and
805 `gnits' strictness. This means, automake will complain about %-rules
806 or $(GNU Make functions) unless you switch to `foreign' strictness or
807 use `-Wno-portability'.
809 - Automake now uses AC_PROG_MKDIR_P (new in Autoconf 2.60), and uses
810 $(MKDIR_P) instead of $(mkdir_p) to create directories. The
811 $(mkdir_p) variable is still defined (to the same value as
812 $(MKDIR_P)) but should be considered obsolete. If you are using
813 $(mkdir_p) in some of your rules, please plan to update them to
814 $(MKDIR_P) at some point.
816 - AM_C_PROTOTYPES and ansi2knr are now documented as being obsolete.
817 They still work in this release, but may be withdrawn in a future one.
819 - Inline compilation rules for gcc3-style dependency tracking are
822 - Automake installs a "Hello World!" example package in $(docdir).
823 This example is used throughout the new "Autotools Introduction"
824 chapter of the manual.
828 * Makefile.in bloat reduction:
830 - Inference rules are used to compile sources in subdirectories when
831 the `subdir-objects' option is used and no per-target flags are
832 used. This should reduce the size of some projects a lot, because
833 Automake used to output an explicit rule for each such object in
836 - Automake no longer outputs three rules (.o, .obj, .lo) for each
837 object that must be built with explicit rules. It just outputs
838 the rules required to build the kind of object considered: either
839 the two .o and .obj rules for usual objects, or the .lo rule for
842 * Change to Libtool support:
844 - Libtool tags are used with libtool versions that support them.
845 (I.e., with Libtool 1.5 or greater.)
847 - Automake is now able to handle setups where a libtool library is
848 conditionally installed in different directories, as in
851 lib_LTLIBRARIES = liba.la
853 pkglib_LTLIBRARIES = liba.la
855 liba_la_SOURCES = ...
857 * Changes to aclocal:
859 - aclocal now ensures that AC_DEFUNs and AU_DEFUNs it discovers are
860 really evaluated, before it decides to include them in aclocal.m4.
861 This solves nasty problems with conditional redefinitions of
862 Autoconf macros in /usr/share/aclocal/*.m4 files causing extraneous
863 *.m4 files to be included in any project using these macros.
864 (Calls to AC_PROG_EGREP causing libtool.m4 to be included is the
865 most famous instance of this bug.)
867 - Do not complain about missing conditionally AC_REQUIREd macros
868 that are not actually used. In 1.8.x aclocal would correctly
869 determine which of these macros were really needed (and include
870 only these in the package); unfortunately it would also require
871 all of them to be present in order to run. This created
872 situations were aclocal would not work on a tarball distributing
873 all the macros it uses. For instance running aclocal on a project
874 containing only the subset of the Gettext macros in use by the
875 project did not work, because gettext conditionally requires other
878 * Portability improvements:
880 - Tar format can be chosen with the new options tar-v7, tar-ustar, and
881 tar-pax. The new option filename-length-max=99 helps diagnosing
882 filenames that are too long for tar-v7. (PR/414)
884 - Variables aumented with `+=' are now automatically flattened (i.e.,
885 trailing backslashes removed) and then wrapped around 80 colummns
886 (adding trailing backslashes). In previous versions, a long series
892 would result in a single-line definition of VAR that could possibly
893 exceed the maximum line length of some make implementations.
895 Non-augmented variables are still output as they are defined in
900 - Support Fortran 90/95 with the new "fc" and "ppfc" languages.
901 Works the same as the old Fortran 77 implementation; just replace
902 F77 with FC everywhere (exception: FFLAGS becomes FCFLAGS).
903 Requires a version of autoconf which provides AC_PROG_FC (>=2.59).
905 - Support for conditional _LISP.
907 - Support for conditional -hook and -local rules (PR/428).
909 - Diagnose AC_CONFIG_AUX_DIR calls following AM_INIT_AUTOMAKE. (PR/49)
911 - Automake will not write any Makefile.ins after the first error it
912 encounters. The previous Makefile.ins (if any) will be left in
913 place. (Warnings will not prevent output, but remember they can
914 be turned into errors with -Werror.)
916 - The restriction that SUBDIRS must contain direct children is gone.
919 - The manual tells more about SUBDIRS vs. DIST_SUBDIRS.
920 It also gives an example of nested packages using AC_CONFIG_SUBDIRS.
924 * Long-standing bugs:
926 - Define DIST_SUBDIRS even when the `no-dist' or `cygnus' options are used
927 so that `make distclean' and `make maintainer-clean' can work.
929 - Define AR and ARFLAGS even when only EXTRA_LIBRARIES are defined.
931 - Fix many rules to please FreeBSD make, which runs commands with `sh -e'.
933 - Polish diagnostic when no input file is found.
937 * Long-standing bugs:
939 - Fix AM_PATH_PYTHON to correctly display $PYTHON when it has been
940 overridden by the user.
942 - Honor PATH_SEPARATOR in various places of the Automake package, for
945 - Adjust dependency tracking mode detection to ICC 8.0's new output.
948 - Fix install-sh so it can install the `mv' binary... using `mv'.
950 - Fix tru64 dependency tracking for libtool objects.
952 - Work around Exuberant Ctags when creating a TAGS files in a directory
953 without files to scan but with subdirectories to include.
955 * Bugs introduced by 1.8:
957 - Fix an "internal error" when @LIBOBJS@ is used in a variable that is
958 not defined in the same conditions as the _LDADD that uses it.
960 - Do not warn when JAVAROOT is overridden, this is legitimate.
964 * Long-standing bugs:
966 - Quote filenames in installation rules, in case $DESTDIR, $prefix,
967 or any of the other *dir variables contain a space.
969 Please note that Automake does not and cannot support spaces in
970 filenames that are involved during the build. This change affects
971 only installation paths, so that `make install' does not bomb out
972 in packages configured with
973 ./configure --prefix '/c/Program Files'
975 - Fix the depfiles output so it works with GNU sed (<4.1) even when
976 POSIXLY_CORRECT is set.
978 - Do not AC_SUBST(LIBOBJS) in AM_WITH_REGEX. This macro was unusable
979 since Autoconf 2.54, which defines LIBOBJS itself.
981 - Fix a potential (but unlikely) race condition in parallel elisp
982 builds. (Introduced in 1.7.3.)
984 - Do not assume that users override _DEPENDENCIES in all conditions
985 where Automake will try to define them.
987 - Do not use `mkdir -p' in mkinstalldirs, unless this is GNU mkdir.
988 Solaris 8's `mkdir -p' is not thread-safe and can break parallel
991 This fix also affects the $(mkdir_p) variable defined since
992 Automake 1.8. It will be set to `mkdir -p' only if mkdir is GNU
993 mkdir, and to `mkinstalldirs' or `install-sh -d' otherwise.
995 - Secure temporary directory creation in `make distcheck'. (PR/413)
997 - Do not generate two build rules for `parser.h' when the
998 parser appears in two different conditionals.
1000 - Work around a Solaris 8 /bin/sh bug in the test for dependency
1001 checking. Usually ./configure will not pick this shell; so this
1002 fix only helps cases where the shell is forced to /bin/sh.
1004 * Bugs introduced by 1.8:
1006 - In some situations (hand-written `m4_include's), aclocal would
1007 call the `File::Spec->rel2abs' method, which was only introduced
1008 in Perl 5.6. This new version reestablish support Perl 5.005.
1010 It is likely that the next major Automake releases will require at
1011 least Perl 5.6. Consider upgrading your development environment
1012 if you are still using the five-year-old Perl 5.005.
1014 - Automake would sometimes fail to define rules for targets listed
1015 in variables defined in multiple conditions. For instance on
1021 it would define only the `a.$(OBJEXT): a.c' rule and omit the
1022 `b.$(OBJEXT): b.c' rule.
1024 * New sections in manual:
1026 - Third-Party Makefiles: how to interface third party Makefiles.
1027 - Upgrading: upgrading packages to newer Automake versions.
1028 - Multiple Outputs: handling tools that produce many outputs.
1032 * A (well known) portability bug slipped in the changes made to
1033 install-sh in Automake 1.8.1. The broken install-sh would refuse to
1034 install anything on Tru64.
1036 * Fix install rules for conditionally built python files. (This never
1041 * Bugs introduced by 1.8:
1043 - Fix Config.pm import error with old Perl versions (at least
1044 5.005_03). One symptom is that aclocal could not find its macro
1047 - Automake 1.8 used `mkdir -m 0755 -p --' to ensure that directories
1048 created by `make install' are always world readable, even if the
1049 installer happens to have an overly restrictive umask (e.g. 077).
1050 This was a mistake and has been reverted. There are at least two
1051 reasons why we must not use `-m 0755':
1052 - it causes special bits like SGID to be ignored,
1053 - it may be too restrictive (some setups expect 775 directories).
1055 - Fix aclocal to honor definitions located in files which have been
1056 m4_included manually. aclocal 1.8 had been updated to check
1057 m4_included files for new requirements, but forgot that these
1058 m4_included files can also provide new definitions.
1060 Note that if you have such a setup, we recommend you get rid of
1061 it. In the past, there was a reason to m4_include files manually:
1062 aclocal used to duplicate entire M4 files into aclocal.m4, even
1063 files that were distributed. Some packages were therefore
1064 m4_including the distributed file directly, and playing some
1065 tricks to ensure aclocal would not copy that file to aclocal.m4,
1066 in order to limit the amount of duplication. Since aclocal 1.8.x
1067 will precisely output m4_includes for local M4 files, we recommend
1068 that you clean up your setup, removing all manual m4_includes and
1069 letting aclocal output them.
1071 - Output detailed menus in the Info version if the Automake manual,
1072 so that Emacs can locate the indexes.
1074 - configure.ac and configure were listed twice in DIST_COMMON (an
1075 internal variable where Automake lists configury files to
1076 distribute). This was harmless, but unaesthetic.
1078 - Use `chmod a-w' instead of `chmod -w' as the latter honors umask.
1079 This was an issue only in the Automake package itself, not in
1082 - Automake assumed that all AC_CONFIG_LINKS arguments had the form
1083 DEST:SRC. This was wrong, as some packages do
1084 AC_CONFIG_LINKS($computedlinks). This version no longer abort in
1087 - Contrary to mkinstalldirs, $(mkdir_p) was expecting exactly one
1088 argument. This caused two kinds of failures:
1089 - Rules installing data in a conditionally defined directory
1090 failed when that directory was undefined. In this case no
1091 argument was supplied.
1092 - `make installdirs' failed, because several directories were
1093 passed to $(mkdir_p). This was an issue only on platform
1094 were $(mkdir_p) is implemented with `install-sh -d'.
1095 $(mkdir_p) as been changed to accept 0 or more arguments, as
1098 * Long-standing bugs:
1100 - Fix an unexpected diagnostic occurring when users attempt
1101 to override some internal variables that Automake appends to.
1103 - aclocal now scans configure.ac for macro definitions (PR/319).
1105 - Fix a portability issue with OSF1/Tru64 Make. If a directory
1106 distributes files which are outside itself (this usually occurs
1107 when using AC_CONFIG_AUX_DIR([../dir]) to use auxiliary files
1108 from a parent package), then `make distcheck' fails due to an
1109 optimization performed by OSF1/Tru64 Make in its VPATH handling.
1110 (tests/subpkg2.test failure)
1112 - Fix another portability issue with Sun and OSF1/Tru64 Make.
1113 In a VPATH-build configuration, `make install' would install
1114 nobase_ files to wrong locations.
1116 - Fix a Perl `uninitialized value' diagnostic occurring when
1117 automake complains that a Texinfo file does not have a
1118 @setfilename statement.
1120 - Erase config.status.lineno during `make distclean'. This file
1121 can be created by config.status. Automake already knew about
1122 configure.lineno, but forgot config.status.lineno.
1124 - Distribute all files, even those which are built and installed
1125 conditionally. This change affects files listed in conditionally
1126 defined *_HEADERS and *_PYTHON variable (unless they are nodist_*)
1127 as well as those listed in conditionally defined dist_*_DATA,
1128 dist_*_JAVA, dist_*_LISP, and dist_*_SCRIPTS variables.
1130 - Fix AM_PATH_LISPDIR to avoid \? in sed regular expressions; it
1131 doesn't conform to POSIX.
1133 - Normalize help strings for configure variables and options added
1138 - Check for python2.4 in AM_PATH_PYTHON.
1140 * Spurious failures in test suite:
1142 - tests/libtool5.test, tests/ltcond.test, tests/ltcond2.test,
1143 tests/ltconv.test: fix failures with CVS Libtool.
1144 - tests/aclocal6.test: fix failure if autom4te.cache is disabled.
1145 - tests/txinfo24.test, tests/txinfo25.test, tests/txinfo28.test:
1146 fix failures with old Texinfo versions.
1152 - The NEWS file is more verbose.
1156 - Autoconf 2.58 or greater is required.
1160 - Default source file names in the absence of a _SOURCES declaration
1161 are made by removing any target extension before appending `.c', so
1162 to make the libtool module `foo.la' from `foo.c', you only need to
1165 lib_LTLIBRARIES = foo.la
1166 foo_la_LDFLAGS = -module
1168 For backward compatibility, foo_la.c will be used instead of
1169 foo.c if this file exists or is the explicit target of a rule.
1170 However -Wobsolete will warn about this deprecated naming.
1172 - AR's `cru' flags are now set in a global ARFLAGS variable instead
1173 of being hard-coded in each $(AR) invocation, so they can be
1174 substituted from configure.ac. This has been requested by people
1175 dealing with non-POSIX ar implementations.
1177 - New warning option: -Woverride. This will warn about any user
1178 target or variable definitions which override Automake
1181 - Texinfo rules back up and restore info files when makeinfo fails.
1183 - Texinfo rules now support the `html' target.
1184 Running this requires Texinfo 4.0 or greater.
1186 `html' is a new recursive target, so if your package mixes
1187 hand-crafted `Makefile.in's with Automake-generated
1188 `Makefile.in's, you should adjust the former to support (or
1189 ignore) this target so that `make html' recurses successfully. If
1190 you had a custom `html' rule in your `Makefile.am', it's better to
1191 rename it as `html-local', otherwise your rule will override
1192 Automake's new rule (you can check that by running `automake
1193 -Woverride') and that will stop the recursion to subdirectories.
1195 Last but not least, this `html' rule is declared PHONY, even when
1196 overridden. Fortunately, it appears that few packages use a
1197 non-PHONY `html' rule.
1199 - Any file which is m4_included from configure.ac will appear as a
1200 configure and Makefile.in dependency, and will be automatically
1203 - The rules for rebuilding Makefiles and Makefile.ins will now
1204 rebuild all Makefiles and all Makefile.ins at once when one of
1205 configure's dependencies has changed. This is considerably faster
1206 than previous implementations, where config.status and automake
1207 were run separately in each directory (this still happens when you
1208 change a Makefile.am locally, without touching configure.ac or
1209 friends). Doing this also solves a longstanding issue: these
1210 rebuild rules failed to work when adding new directories to the
1211 tree, forcing you to run automake manually.
1213 - For similar reasons, the rules to rebuild configure,
1214 config.status, and aclocal.m4 are now defined in all directories.
1215 Note that if you were using the CONFIG_STATUS_DEPENDENCIES and
1216 CONFIGURE_DEPENDENCIES (formerly undocumented) variables, you
1217 should better define them in all directories. This is easily done
1218 using an AC_SUBST (make sure you prefix these dependencies with
1219 $(top_srcdir) since this variable will appear at different
1220 levels of the build tree).
1222 - aclocal will now use `m4_include' instead of copying local m4
1223 files into aclocal.m4. (Local m4 files are those you ship with
1224 your project, other files will be copied as usual.)
1226 Because m4_included files are automatically distributed, it means
1227 for most projects there is no point in EXTRA_DISTing the list of
1228 m4 files which are used. (You can probably get rid of
1229 m4/Makefile.am if you had one.)
1231 - aclocal will avoid touching aclocal.m4 when possible, so that
1232 Autom4te's cache isn't needlessly invalidated. This behavior can
1233 be switched off with the new `--force' option.
1235 - aclocal now uses Autoconf's --trace to detect macros which are
1236 actually used and will no longer include unused macros simply
1237 because they where mentioned. This was often the case for macros
1238 called conditionally.
1240 - New options no-dist and no-dist-gzip.
1242 - compile, depcomp, elisp-comp, install-sh, mdate-sh, mkinstalldirs,
1243 py-compile, and ylwrap, now all understand --version and --help.
1245 - Automake will now recognize AC_CONFIG_LINKS so far as removing created
1246 links as part of the distclean target and including source files in
1249 - AM_PATH_PYTHON now supports ACTION-IF-FOUND and ACTION-IF-NOT-FOUND
1250 argument. The latter can be used to override the default behavior
1251 (which is to abort).
1253 - Automake will exit with $? = 63 on version mismatch. (So does
1254 Autoconf 2.58) missing knows this, and in this case it will
1255 emulate the tools as if they were absent. Because older versions
1256 of Automake and Autoconf did not use this exit code, this change
1257 will only be useful in projects generated with future versions of
1260 - When using AC_CONFIG_FILES with multiple input files, Automake
1261 generates the first ".in" input file for which a ".am" exists.
1262 (Former versions would try to use only the first input file.)
1264 - lisp_DATA is now allowed. If you are using the empty ELCFILES
1265 idiom to disable byte-compilation of lisp_LISP files, it is
1266 recommended that you switch to using lisp_DATA. Note that
1267 this is not strictly equivalent: lisp_DATA will install elisp
1268 files even if emacs is not installed, while *_LISP do not
1269 install anything unless emacs is found.
1271 - Makefiles will prefer `mkdir -p' over mkinstalldirs if it is
1272 available. This selection is achieved through the Makefile
1273 variable $(mkdir_p) that is set by AM_INIT_AUTOMAKE to either
1274 `mkdir -m 0755 -p --', `$(mkinstalldirs) -m 0755', or
1275 `$(install_sh) -m 0755 -d'.
1279 - Because `mkdir -p' is available on most platforms, and we can use
1280 `install-sh -d' when it is not, the use of the mkinstalldirs
1281 script is being phased out. `automake --add-missing' no longer
1282 installs it, and if you remove mkinstalldirs from your package,
1283 automake will define $(mkinstalldirs) as an alias for $(mkdir_p).
1285 Gettext 0.12.1 still requires mkinstalldirs. Fortunately
1286 gettextize and autopoint will install it when needed. Automake
1287 will continue to define the $(mkinstalldirs) and to distribute
1288 mkinstalldirs when this script is in the source tree.
1290 - AM_PROG_CC_STDC is now empty. The content of this macro was
1291 merged in AC_PROG_CC. If your code uses $am_cv_prog_cc_stdc, you
1292 should adjust it to use $ac_cv_prog_cc_stdc instead. (This
1293 renaming should be safe, even if you have to support several,
1294 versions of Automake, because AC_PROG_CC defines this variable
1295 since Autoconf 2.54.)
1297 - Some users where using the undocumented ACLOCAL_M4_SOURCES
1298 variable to override the aclocal.m4 dependencies computed
1299 (inaccurately) by older versions of Automake. Because Automake
1300 now tracks configure's m4 dependencies accurately (see m4_include
1301 above), the use of ACLOCAL_M4_SOURCES should be considered
1302 obsolete and will be flagged as such when running `automake
1307 - Defining programs conditionally using Automake conditionals no
1308 longer leads to a combinatorial explosion. The following
1309 construct used to be troublesome when used with dozens of
1324 Likewise for _SOURCES, _LDADD, and _LIBADD variables.
1326 - Due to implementation constraints, previous versions of Automake
1327 proscribed multiple conditional definitions of some variables
1337 All _PROGRAMS, _LDADD, and _LIBADD variables were affected.
1338 This restriction has been lifted, and these variables now
1339 support multiple conditional definitions as do other variables.
1341 - Cleanup the definitions of $(distdir) and $(top_distdir).
1342 $(top_distdir) now points to the root of the distribution
1343 directory created during `make dist', as it did in Automake 1.4,
1344 not to the root of the build tree as it did in intervening
1345 versions. Furthermore these two variables are now only defined in
1346 the top level Makefile, and passed to sub-directories when running
1349 - The --no-force option now correctly checks the Makefile.in's
1350 dependencies before deciding not to update it.
1352 - Do not assume that make files are called Makefile in cleaning rules.
1354 - Update .info files in the source tree, not in the build tree. This
1355 is what the GNU Coding Standard recommend. Only Automake 1.7.x
1356 used to update these files in the build tree (previous versions did
1357 it in the source tree too), and it caused several problems, varying
1358 from mere annoyance to portability issues.
1360 - COPYING, COPYING.LIB, and COPYING.LESSER are no longer overwritten
1361 when --add-missing and --force-missing are used. For backward
1362 compatibility --add-missing will continue to install COPYING (in
1363 `gnu' strictness) when none of these three files exist, but this
1364 use is deprecated: you should better choose a license yourself and
1365 install it once for all in your source tree (and in your code
1368 - Fix ylwrap so that it does not overwrite header files that haven't
1369 changed, as the inline rule already does.
1371 - User-defined rules override automake-defined rules for the same
1372 targets, even when rules do not have commands. This is not new
1373 (and was documented), however some of the automake-generated
1374 rules have escaped this principle in former Automake versions.
1375 Rules for the following targets are affected by this fix:
1377 clean, clean-am, dist-all, distclean, distclean-am, dvi, dvi-am,
1378 info, info-am, install-data-am, install-exec-am, install-info,
1379 install-info-am, install-man, installcheck-am, maintainer-clean,
1380 maintainer-clean-am, mostlyclean, mostlyclean-am, pdf, pdf-am,
1381 ps, ps-am, uninstall-am, uninstall-info, uninstall-man
1383 Practically it means that an attempt to supplement the dependencies
1384 of some target, as in
1386 clean: my-clean-rule
1388 will now *silently override* the automake definition of the
1389 rule for this target. Running `automake -Woverride' will diagnose
1390 all such overriding definitions.
1392 It should be noted that almost all these targets support a *-local
1393 variant that is meant to supplement the automake-defined rule
1394 (See node `Extending' in the manual). The above rule should
1397 clean-local: my-clean-rule
1399 These *-local targets have been documented since at least
1400 Automake 1.2, so you should not fear the change if you have
1401 to support multiple automake versions.
1405 - The Automake manual is now distributed under the terms of the GNU FDL.
1407 - Targets dist-gzip, dist-bzip2, dist-tarZ, dist-zip are always defined.
1409 - core dumps are no longer removed by the cleaning rules. There are
1410 at least three reasons for this:
1411 1. These files should not be created by any build step,
1412 so their removal do not fit any of the cleaning rules.
1413 Actually, they may be precious to the developer.
1414 2. If such file is created during a build, then it's clearly a
1415 bug Automake should not hide. Not removing the file will
1416 cause `make distcheck' to complain about its presence.
1417 3. Operating systems have different naming conventions for
1418 core dump files. A core file on one system might be a
1419 completely legitimate data file on another system.
1421 - RUNTESTFLAGS, CTAGSFLAGS, ETAGSFLAGS, JAVACFLAGS are no longer
1422 defined by Automake. This means that any definition in the
1423 environment will be used, unless overridden in the Makefile.am or
1424 on the command line. The old behavior, where these variables were
1425 defined empty in each Makefile, can be obtained by AC_SUBSTing or
1426 AC_ARG_VARing each variable from configure.ac.
1428 - CONFIGURE_DEPENDENCIES and CONFIG_STATUS_DEPENDENCIES are now
1429 documented. (The is not a new feature, these variables have
1430 been there since at least Automake 1.4.)
1432 Bugs fixed in 1.7.9:
1433 * Fix install-strip to work with nobase_ binaries.
1434 * Fix renaming of #line directives in ylwrap.
1435 * Rebuild with Autoconf 2.59. (1.7.8 was not installable with pdksh.)
1437 Bugs fixed in 1.7.8:
1438 * Remove spurious blank lines in cleaning rules introduced in 1.7.7.
1439 * Fix detection of Debian's install-info, broken since version 1.5.
1440 (Debian bug #213524).
1441 * Honor -module if it appears in AM_LDFLAGS (i.e., relax name checking)
1442 This was only done for libfoo_LDFLAGS and LDFLAGS in previous versions.
1444 Bugs fixed in 1.7.7:
1445 * The implementation of automake's --no-force option is unreliable,
1446 so this option is ignored in this version. A real fix will appear in
1447 Automake 1.8. (Debian Bug #206299)
1448 * AM_PATH_PYTHON: really check the whole list of interpreters if no
1449 argument is given. (PR/399)
1450 * Do not warn about leading `_' in variable names, even with -Wportability.
1451 * Support user redefinitions of TEXINFO_TEX.
1452 * depcomp: support AIX Compiler version 6.
1453 * Fix missing rebuilds during `make dist' with BSD make.
1454 (Could produce tarballs containing out-of-date files.)
1455 * Resurrect multilib support.
1456 * Noteworthy manual updates:
1457 - Extending aclocal: how to write m4 macros that won't trigger warnings
1459 - A Shared Library: Rewrite and split into subsections.
1461 Bugs fixed in 1.7.6:
1462 * Fix depcomp's icc mode for ICC 7.1.
1463 * Diagnose calls to AC_CONFIG_FILES and friends with not enough arguments.
1464 * Fix maintainer-clean's removal of autom4te.cache in VPATH builds.
1465 * Fix AM_PATH_LISPDIR to work with POSIXLY_CORRECT=1.
1466 * Fix the location reported in some diagnostics related to AUTOMAKE_OPTIONS.
1467 * Remove Latin-1 characters from elisp-comp.
1468 * Update the manual's @dircategory to match the Free Software Directory.
1470 Bugs fixed in 1.7.5:
1471 * Update install-sh's license to remove an advertising clause.
1472 (Debian bug #191717)
1473 * Fix a bug introduced in 1.7.4, related to BUILT_SOURCE handling,
1474 that caused invalid Makefile.ins to be generated.
1475 * Make sure AM_MAKE_INCLUDE doesn't fail when a `doit' file exists.
1476 * New FAQ entry: renamed objects.
1478 Bugs fixed in 1.7.4:
1479 * Tweak the TAGS rule to support Exuberant Ctags (in addition to
1480 the Emacs implementation)
1481 * Fix output of aclocal.m4 dependencies in subdirectories.
1482 * Use `mv -f' instead of `mv' in fastdep rules.
1483 * Upgrade mdate-sh to work on OS/2.
1484 * Don't byte-compile elisp files when ELCFILES is set empty.
1485 (this documented feature was broken by 1.7.3)
1486 * Diagnose trailing backslashes on last line of Makefile.am.
1487 * Diagnose whitespace following trailing backslashes.
1488 * Multiple tests are now correctly supported in DEJATOOL. (PR/388)
1489 * Fix rebuilt rules for AC_CONFIG_FILES([Makefile:Makefile.in:Makefile.bot])
1491 * `make install' will build `BUILT_SOURCES' first.
1492 * Minor documentation fixes.
1494 Bugs fixed in 1.7.3:
1495 * Fix stamp files numbering (when using multiple AC_CONFIG_HEADERS).
1496 * Query distutils for `pythondir' and `pythonexecdir', instead of
1497 using an hardcoded path. This should allow builds on 64-bit
1498 distributions that usually use lib64/ instead of lib/.
1499 * AM_PATH_PYTHON will also search for python2.3.
1500 * elisp files are now built all at once instead of one by one. Besides
1501 incurring a speed-up, this is required to support interdependent elisp files.
1502 * Support for DJGPP:
1503 - `make distcheck' will now work in `_inst/' and `_build' instead
1504 of `=inst/' and `=build/'
1505 - use `_dirstamp' when the file-system doesn't support `.dirstamp'
1506 - install/uninstall `*.i[0-9][0-9]'-style info files
1507 - more changes that affect only the Automake package (not its output)
1508 * Fix some incompatibilities with upcoming perl-5.10.
1509 * Properly quote AC_PACKAGE_TARNAME and AC_PACKAGE_VERSION when defining
1510 PACKAGE and VERSION.
1512 - dashmstdout and dashXmstdout modes: don't use `-o /dev/null', this
1513 is troublesome with gcc and Solaris compilers. (PR/385)
1514 - makedepend mode: work with Libtool. (PR/385 too)
1516 * better support for unusual gettext setups, such as multiple po/ directories
1518 - Flag missing po/ and intl/ directories as warnings, not errors.
1519 - Disable these warnings if po/ does not exist.
1520 * Noteworthy manual updates:
1522 - Document how AC_CONFIG_AUX_DIR interacts with missing files.
1524 - Document `AM_YFLAGS = -d'. (PR/382)
1526 Bugs fixed in 1.7.2:
1527 * Fix installation and uninstallation of Info files built in subdirectories.
1528 * Do not run `./configure --with-included-gettext' during `make distcheck'
1529 if AM_GNU_GETTEXT([external]) is used.
1530 * Correctly uninstall renamed man pages.
1531 * Do not strip escaped newline in variables defined in one condition
1532 and augmented in another condition.
1533 * Fix ansi2knr rules for LIBOBJS sources.
1534 * Clean all known Texinfo index files, not only those which appear to
1535 be used, because we cannot know wich indexes are used in included files.
1536 (PR/375, Debian Bug #168671)
1537 * Honor only the first @setfilename seen in a Texinfo file.
1538 * Treat "required file X not found" diagnostics as errors (exit status 1).
1539 * Don't complain that a required file is not found when it is a Makefile
1541 * Don't use single suffix inference rules when building `.info'-less
1542 Info files, for the sake of Solaris make.
1543 * The `check' target now depends on `$(BUILT_SOURCES)'. (PR/359)
1544 * Recognize multiple inference rules such as `.a.b .c.d:'. (PR/371)
1545 * Warn about multiple inference rules when -Wportability is used. (PR/372)
1546 * Fix building of deansified files from subdirectories. (PR/370)
1547 * Add missing `fi' in the .c->.obj rules.
1548 * Improve install-sh to work even when names contain spaces or certain
1549 (but not all) shell metachars.
1550 * Fix the following spurious failures in the test suite:
1551 depcomp2.test, gnits2.test, gnits3.test, python3.test, texinfo13.test
1552 * Noteworthy manual updates:
1553 - Augment the section about BUILT_SOURCES.
1554 - Mention that AM_PROG_CC_STDC is a relic that is better avoided today.
1556 Bugs fixed in 1.7.1:
1557 * Honor `ansi2knr' for files built in subdirectories, or using per-targets
1559 * Aclocal should now recognize macro names containing parentheses, e.g.
1560 AC_DEFUN([AC_LANG_PREPROC(Fortran 90)], [...]).
1561 * Erase *.sum and *.log files created by DejaGnu, during `make distclean'.
1563 * Install Python files even if they were built. (PR/369)
1564 * Have stamp-vti dependent upon configure instead of configure.ac, as the
1565 version might not be defined in the latter. (PR/358)
1566 * Reorder arguments passed to a couple of commands, so things works
1567 when POSIXLY_CORRECT=1.
1568 * Fix a regex that can cause Perl to segfault on large input.
1570 * Fix distribution of packages that have some sources defined conditionally,
1571 as in the `Conditional compilation using Automake conditionals' example
1573 * Fix spurious test suite failures on IRIX.
1574 * Don't report a required variable as undefined if it has been
1575 defined conditionally for the "right" conditions.
1576 * Fix cleaning of the /tmp subdirectory used by `make distcheck', in case
1577 `make distcheck' fails.
1578 * Fix distribution of included Makefile fragment, so we don't create
1579 spurious directories in the distribution. (PR/366)
1580 * Don't complain that a target lacks `.$(EXEEXT)' when it has it.
1583 * Autoconf 2.54 is required.
1584 * `aclocal' and `automake' will no longer warn about obsolete
1585 configure macros. This is done by `autoconf -Wobsolete'.
1586 * AM_CONFIG_HEADER, AM_SYS_POSIX_TERMIOS and
1587 AM_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL are obsolete (although still
1588 supported). You should use AC_CONFIG_HEADERS, AC_SYS_POSIX_TERMIOS,
1589 and AC_HEADER_TIOCGWINSZ instead. `autoupdate' can upgrade
1590 `configure.ac' for you.
1591 * Support for per-program and per-library `_CPPFLAGS'.
1592 * New `ctags' target (builds CTAGS files).
1593 * Support for -Wmumble and -Wno-mumble, where mumble is a warning category
1594 (see `automake --help' or the manual for a list of them).
1595 * Honor the WARNINGS environment variable.
1596 * Omit the call to depcomp when using gcc3: call the compiler directly.
1597 * A new option, std-options, tests that programs support --help and --version
1598 when `make installcheck' is run. This is enabled by --gnits.
1599 * Texinfo rules now support the `ps' and `pdf' targets.
1600 * Info files are now created in the build directory, not the source directory.
1601 * info_TEXINFOS supports files in subdirectories (this requires Texinfo 4.1
1603 * `make distcheck' will enforce DESTDIR support by attempting
1605 * `+=' can be used in conditionals, even if the augmented variable
1606 was defined for another condition.
1607 * Makefile fragments (inserted with `include') are always distributed.
1608 * Use Autoconf's --trace interface to inspect configure.ac and get
1609 a more accurate view of it.
1610 * Add support for extending aclocal's default macro search path
1611 using a `dirlist' file within the aclocal directory.
1612 * automake --output-dir is deprecated.
1613 * The part of the distcheck target that checks whether uninstall actually
1614 removes all installed files has been moved in a separate target,
1615 distuninstallcheck, so it can be overridden easily.
1619 * Support for AM_INIT_GETTEXT([external])
1620 * Bug fixes, including:
1621 - Fix Automake's own `make install' so it works even if `ln' doesn't.
1622 - nobase_ programs and scripts honor --program-transform correctly.
1623 - Erase configure.lineno during `make distclean'.
1624 - Erase YACC and LEX outputs during `make maintainer-clean'.
1627 * Many bug fixes, including:
1628 - Requiring the current version works.
1629 - Fix "$@" portability issues (for Zsh).
1630 - Fix output of dummy dependency files in presence of post-processed
1632 - Don't compute dependencies in background to avoid races with libtool.
1633 - Fix handling of _OBJECTS variables for targets sharing source variables.
1634 - Check dependency mode for Java when AM_PROG_GCJ is used.
1637 * automake --output-dir is deprecated
1638 * Many bug fixes, including:
1639 - Don't choke on AM_LDFLAGS definitions.
1640 - Clean libtool objects from subdirectories.
1641 - Allow configure variables with reserved suffix and unknown prefix
1642 (e.g. AC_SUBST(mumble_LDFLAGS) when 'mumble' is not a target).
1643 - Fix the definition of AUTOMAKE and ACLOCAL in configure.
1646 * Autoconf 2.52 is required.
1647 * automake no longer run libtoolize.
1648 This is the job of autoreconf (from GNU Autoconf).
1649 * `dist' generates all the archive flavors, as did `dist-all'.
1650 * `dist-gzip' generates the Gzip tar file only.
1651 * Combining Automake Makefile conditionals no longer lead to a combinatorial
1652 explosion. Makefile.in's keep a reasonable size.
1653 * AM_FUNC_ERROR_AT_LINE, AM_FUNC_STRTOD, AM_FUNC_OBSTACK, AM_PTRDIFF_T
1654 are no longer shipped, since Autoconf 2.52 provides them (both as AM_
1656 * `#line' of Lex and Yacc files are properly set.
1657 * EXTRA_DIST can contain generated directories.
1658 * Support for dot-less extensions in suffix rules.
1659 * The part of the distcheck target that checks whether distclean actually
1660 cleans all built files has been moved in a separate target, distcleancheck,
1661 so it can be overridden easily.
1662 * `make distcheck' will pass additional options defined in
1663 $(DISTCHECK_CONFIGURE_FLAGS) to configure.
1664 * Fixed CDPATH portability problems, in particular for MacOS X.
1665 * Fixed handling of nobase_ targets.
1666 * Fixed support of implicit rules leading to .lo objects.
1667 * Fixed late inclusion of --add-missing files (e.g. depcomp) in DIST_COMMON
1668 * Added uninstall-hook target
1669 * `AC_INIT AM_INIT_AUTOMAKE(tarname,version)' is an obsolete construct.
1670 You can now use `AC_INIT(pkgname,version) AM_INIT_AUTOMAKE' instead.
1671 (Note that "pkgname" is not "tarname", see the manual for details.)
1672 It is also possible to pass a list of global Automake options as
1673 first argument to this new form of AM_INIT_AUTOMAKE.
1674 * Compiler-based assembler is now called `CCAS'; people expected `AS'
1675 to be a real assembler.
1676 * AM_INIT_AUTOMAKE will set STRIP itself when it needs it. Adding
1677 AC_CHECK_TOOL([STRIP], [strip]) manually is no longer required.
1678 * aclocal and automake are also installed with the version number
1679 appended, and some of the install directory names have changed.
1680 This lets you have multiple versions installed simultaneously.
1681 * Support for parsers and lexers in subdirectories.
1684 * Support for `configure.ac'.
1685 * Support for `else COND', `endif COND' and negated conditions `!COND'.
1686 * `make dist-all' is much faster.
1687 * Allows '@' AC_SUBSTs in macro names.
1688 * Faster AM_INIT_AUTOMAKE (requires update of `missing' script)
1689 * User-side dependency tracking. Developers no longer need GNU make
1691 * Uses DIST_SUBDIRS in some situations when SUBDIRS is conditional
1692 * Most files are correctly handled if they appear in subdirs
1693 For instance, a _DATA file can appear in a subdir
1694 * GNU tar is no longer required for `make dist'
1695 * Added support for `dist_' and `nodist_' prefixes
1696 * Added support for `nobase_' prefix
1697 * Compiled Java support
1698 * Support for per-executable and per-library compilation flags
1702 * Added support for the Fortran 77 programming language.
1703 * Re-indexed the Automake Texinfo manual.
1704 * Added `AM_FOOFLAGS' variable for each compiler invocation;
1705 e.g. AM_CFLAGS can be used in Makefile.am to set C compiler flags
1706 * Support for latest autoconf, including support for objext
1707 * Can now put `.' in SUBDIRS to control build order
1708 * `include' command and `+=' support for macro assignment
1709 * Dependency tracking no long susceptible to deleted header file problem
1710 * Maintainer mode now a conditional. @MAINT@ is now an anachronism.
1715 * Better Cygwin32 support
1716 * Support for suffix rules with _SOURCES variables
1717 * New options `readme-alpha' and `check-news'; Gnits mode sets these
1718 * @LEXLIB@ no longer required when lex source seen
1719 Lex support in `missing', and new lex macro. Update your missing script.
1720 * Built-in support for assembly
1721 * aclocal gives error if `AM_' macro not found
1722 * Passed YFLAGS, not YACCFLAGS, to yacc
1723 * AM_PROG_CC_STDC does not have to come before AC_PROG_CPP
1724 * Dependencies computed as a side effect of compilation
1725 * Preliminary support for Java
1726 * DESTDIR support at "make install" time
1727 * Improved ansi2knr support; you must use the latest ansi2knr.c (included)
1731 * Better DejaGnu support
1732 * Added no-installinfo option
1733 * Added Emacs Lisp support
1734 * Added --no-force option
1735 * Included `aclocal' program
1736 * Automake will now generate rules to regenerate aclocal.m4, if appropriate
1737 * Now uses `AM_' macro names everywhere
1738 * ansi2knr option can have directory prefix (eg `../lib/ansi2knr')
1739 ansi2knr now works correctly on K&R sources
1740 * Better C++, yacc, lex support
1741 * Will compute _DEPENDENCIES variables automatically if not supplied
1742 * Will interpolate $(...) and ${...} when examining contents of a variable
1743 * .deps files now in build directory, not source directory; dependency
1744 handling generally rewritten
1745 * DATA, MANS and BUILT_SOURCES no longer included in distribution
1746 * can now put config.h into a subdir
1747 * Added dist-all target
1748 * Support for install-info program (see texinfo 3.9)
1749 * Support for "yacc -d"
1750 * configure substitutions are automatically discovered and included
1751 in generated Makefile.in
1752 * Special --cygnus mode
1753 * OMIT_DEPENDENCIES can now hold list of dependencies to be omitted
1754 when making distribution. Some dependencies are auto-ignored.
1755 * Changed how libraries are specified in _LIBRARIES variable
1756 * Full libtool support, from Gord Matzigkeit
1757 * No longer have to explicitly touch stamp-h when using AC_CONFIG_HEADER;
1758 AM_CONFIG_HEADER handles it automatically
1759 * Texinfo output files no longer need .info extension
1760 * Added `missing' support
1762 * Conditionals in Makefile.am, from Ian Taylor
1766 * distcheck target runs install and installcheck targets
1767 * Added preliminary support for DejaGnu.
1772 * More libtool fixes from Gord Matzigkeit; libtool support is still
1774 * Added support for jm_MAINTAINER_MODE
1776 * New "distcheck" target
1780 * mkinstalldirs and mdate-sh now appear in directory specified by
1782 * Removed DIST_SUBDIRS, DIST_OTHER
1783 * AC_ARG_PROGRAM only required when an actual program exists
1784 * dist-hook target now run before distribution packaged up; idea from
1785 Dieter Baron. Other hooks exist, too.
1786 * Preliminary (unfinished) support for libtool
1787 * Added short option names.
1788 * Better "dist" support when gluing together multiple packages
1792 * Documentation updates (many from François Pinard)
1793 * strictness `normal' now renamed to `foreign'
1794 * Renamed --install-missing to --add-missing
1795 * Now handles AC_CONFIG_AUX_DIR
1796 * Now handles TESTS macro
1797 * DIST_OTHER renamed to EXTRA_DIST
1798 * DIST_SUBDIRS is deprecated
1799 * @ALLOCA@ and @LIBOBJS@ now work in _LDADD variables
1800 * Better error messages in many cases
1801 * Program names are canonicalized
1802 * Added "check" prefix; from Gord Matzigkeit
1806 * configure.in scanner knows about AC_PATH_XTRA, AC_OUTPUT ":" syntax
1807 * Beginnings of a test suite
1808 * Automatically adds -I options for $(srcdir), ".", and path to config.h
1809 * Doesn't print anything when running
1810 * Beginnings of MAINT_CHARSET support
1811 * Can specify version in AUTOMAKE_OPTIONS
1812 * Most errors recognizable by Emacs' M-x next-error
1813 * Added --verbose option
1814 * All "primary" variables now obsolete; use EXTRA_PRIMARY to supply
1815 configure-generated names
1816 * Required macros now distributed in aclocal.m4
1818 * --strictness=gnu is default
1822 * More sophisticated configure.in scanning; now understands ALLOCA and
1823 LIBOBJS directly, handles AC_CONFIG_HEADER more precisely, etc.
1824 * TEXINFOS and MANS now obsolete; use info_TEXINFOS and man_MANS instead.
1825 * CONFIG_HEADER variable now obsolete
1826 * Can handle multiple Texinfo sources
1827 * Allow hierarchies deeper than 2. From Gord Matzigkeit.
1828 * HEADERS variable no longer needed; now can put .h files directly into
1829 foo_SOURCES variable.
1830 * Automake automatically rebuilds files listed in AC_OUTPUT. The
1831 corresponding ".in" files are included in the distribution.
1834 * Added --gnu and --gnits options
1835 * More standards checking
1837 * Cleaned up 'dist' targets
1838 * Added AUTOMAKE_OPTIONS variable and several options
1839 * Now scans configure.in to get some information (preliminary)
1842 * Works with Perl 4 again
1845 * Added --install-missing option.
1846 * Pretty-prints generated macros and rules
1847 * Comments in Makefile.am are placed more intelligently in Makefile.in
1848 * Generates .PHONY target
1849 * Rule or macro in Makefile.am now overrides contents of Automake file
1850 * Substantial cleanups from François Pinard
1854 * Works with Perl 4 again.
1857 * New uniform naming scheme.
1858 * --strictness option
1860 * '.c' files corresponding to '.y' or '.l' files are automatically
1862 * Many bug fixes and cleanups
1865 * Allow objects to be conditionally included in libraries via lib_LIBADD.
1868 * Bug fixes in 'clean' code.
1869 * Now generates 'installdirs' target.
1870 * man page installation reworked.
1871 * 'make dist' no longer re-creates all Makefile.in's.
1874 * Reimplemented in Perl
1875 * Added --amdir option (for debugging)
1876 * Texinfo support cleaned up.
1877 * Automatic de-ANSI-fication cleaned up.
1878 * Cleaned up 'clean' targets.
1881 * Automatic dependency tracking
1882 * More documentation
1883 * New variables DATA and PACKAGEDATA
1884 * SCRIPTS installed using $(INSTALL_SCRIPT)
1885 * No longer uses double-colon rules
1887 * Changes in advance of internationalization
1891 Copyright (C) 1995-2012 Free Software Foundation, Inc.
1893 This program is free software; you can redistribute it and/or modify
1894 it under the terms of the GNU General Public License as published by
1895 the Free Software Foundation; either version 2, or (at your option)
1898 This program is distributed in the hope that it will be useful,
1899 but WITHOUT ANY WARRANTY; without even the implied warranty of
1900 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1901 GNU General Public License for more details.
1903 You should have received a copy of the GNU General Public License
1904 along with this program. If not, see <http://www.gnu.org/licenses/>.