2 # Process this file with autoconf to produce a configure script.
4 # Copyright (C) 1991, 1993-2011 Free Software Foundation, Inc.
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 dnl Written by Jim Meyering.
23 # Make inter-release version strings look like, e.g., v6.9-219-g58ddd, which
24 # indicates that it is built from the 219th delta (in _some_ repository)
25 # following the v6.9 tag, and that 58ddd is a prefix of the commit SHA1.
26 AC_INIT([GNU coreutils],
27 m4_esyscmd([build-aux/git-version-gen .tarball-version]),
28 [bug-coreutils@gnu.org])
30 AC_CONFIG_SRCDIR([src/ls.c])
32 AC_CONFIG_AUX_DIR([build-aux])
33 AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
35 AM_INIT_AUTOMAKE([1.11.1 no-dist-gzip dist-xz color-tests parallel-tests])
36 AM_SILENT_RULES([yes]) # make --enable-silent-rules the default.
41 AC_PROG_GCC_TRADITIONAL
48 AC_ARG_ENABLE([gcc-warnings],
49 [AS_HELP_STRING([--enable-gcc-warnings],
50 [turn on lots of GCC warnings (for developers)])],
53 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
55 gl_gcc_warnings=$enableval],
59 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
60 # ------------------------------------------------
61 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
62 # Otherwise, run RUN-IF-NOT-FOUND.
63 AC_DEFUN([gl_GCC_VERSION_IFELSE],
67 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
70 # error "your version of gcc is older than $1.$2"
77 if test "$gl_gcc_warnings" = yes; then
78 gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
79 AC_SUBST([WERROR_CFLAGS])
82 # This, $nw, is the list of warnings we disable.
83 nw="$nw -Wdeclaration-after-statement" # too useful to forbid
84 nw="$nw -Waggregate-return" # anachronistic
85 nw="$nw -Wlong-long" # C90 is anachronistic (lib/gethrxtime.h)
86 nw="$nw -Wc++-compat" # We don't care about C++ compilers
87 nw="$nw -Wundef" # Warns on '#if GNULIB_FOO' etc in gnulib
88 nw="$nw -Wtraditional" # Warns on #elif which we use often
89 nw="$nw -Wcast-qual" # Too many warnings for now
90 nw="$nw -Wconversion" # Too many warnings for now
91 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
92 nw="$nw -Wsign-conversion" # Too many warnings for now
93 nw="$nw -Wtraditional-conversion" # Too many warnings for now
94 nw="$nw -Wunreachable-code" # Too many warnings for now
95 nw="$nw -Wpadded" # Our structs are not padded
96 nw="$nw -Wredundant-decls" # openat.h declares e.g., mkdirat
97 nw="$nw -Wlogical-op" # any use of fwrite provokes this
98 nw="$nw -Wformat-nonliteral" # who.c and pinky.c strftime uses
99 nw="$nw -Wvla" # warnings in gettext.h
100 nw="$nw -Wnested-externs" # use of XARGMATCH/verify_function__
101 nw="$nw -Wswitch-enum" # Too many warnings for now
102 nw="$nw -Wswitch-default" # Too many warnings for now
103 nw="$nw -Wstack-protector" # not worth working around
104 # things I might fix soon:
105 nw="$nw -Wfloat-equal" # sort.c, seq.c
106 nw="$nw -Wmissing-format-attribute" # copy.c
107 nw="$nw -Wunsafe-loop-optimizations" # a few src/*.c
108 nw="$nw -Winline" # system.h's readdir_ignoring_dot_and_dotdot
110 # Using -Wstrict-overflow is a pain, but the alternative is worse.
111 # For an example, see the code that provoked this report:
112 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498
113 # Code like that still infloops with gcc-4.6.0 and -O2. Scary indeed.
115 gl_MANYWARN_ALL_GCC([ws])
116 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
120 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
121 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
122 gl_WARN_ADD([-Wsuggest-attribute=const])
123 gl_WARN_ADD([-Wsuggest-attribute=noreturn])
124 gl_WARN_ADD([-Wno-format-nonliteral])
125 gl_WARN_ADD([-Wno-unsuffixed-float-constants])
127 # Enable this warning only with gcc-4.7 and newer. With 4.6.2 20111027,
128 # it suggests test.c's advance function may be pure, even though it
129 # increments a global variable. Oops.
130 # Normally we'd write code to test for the precise failure, but that
131 # requires a relatively large input to make gcc exhibit the failure.
132 gl_GCC_VERSION_IFELSE([4], [7], [gl_WARN_ADD([-Wsuggest-attribute=pure])])
134 # In spite of excluding -Wlogical-op above, it is enabled, as of
135 # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
136 gl_WARN_ADD([-Wno-logical-op])
138 gl_WARN_ADD([-fdiagnostics-show-option])
139 gl_WARN_ADD([-funit-at-a-time])
141 AC_SUBST([WARN_CFLAGS])
143 AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
144 AC_DEFINE([_FORTIFY_SOURCE], [2],
145 [enable compile-time and run-time bounds-checking, and some warnings])
146 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
148 # We use a slightly smaller set of warning options for lib/.
149 # Remove the following and save the result in GNULIB_WARN_CFLAGS.
151 nw="$nw -Wstrict-overflow"
152 nw="$nw -Wuninitialized"
153 nw="$nw -Wunused-macros"
154 nw="$nw -Wmissing-prototypes"
155 nw="$nw -Wold-style-definition"
156 # FIXME: it may be easy to remove this, since it affects only one file:
157 # the snprintf call at ftoastr.c:132.
158 nw="$nw -Wdouble-promotion"
159 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
160 AC_SUBST([GNULIB_WARN_CFLAGS])
162 # For gnulib-tests, the set is slightly smaller still.
164 nw="$nw -Wstrict-prototypes"
165 # It's not worth being this picky about test programs.
166 nw="$nw -Wsuggest-attribute=const"
167 nw="$nw -Wsuggest-attribute=pure"
168 gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
169 [$GNULIB_WARN_CFLAGS], [$nw])
170 AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
176 AC_CHECK_FUNCS([chroot],
177 gl_ADD_PROG([optional_bin_progs], [chroot]))
178 AC_CHECK_FUNCS([gethostid],
179 gl_ADD_PROG([optional_bin_progs], [hostid]))
183 AC_MSG_CHECKING([whether localtime caches TZ])
184 AC_CACHE_VAL([utils_cv_localtime_cache],
185 [if test x$ac_cv_func_tzset = xyes; then
186 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
190 extern char **environ;
194 for (to = from = environ; (*to = *from); from++)
195 if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
200 time_t now = time ((time_t *) 0);
201 int hour_GMT0, hour_unset;
202 if (putenv ("TZ=GMT0") != 0)
204 hour_GMT0 = localtime (&now)->tm_hour;
206 hour_unset = localtime (&now)->tm_hour;
207 if (putenv ("TZ=PST8") != 0)
209 if (localtime (&now)->tm_hour == hour_GMT0)
212 if (localtime (&now)->tm_hour != hour_unset)
216 [utils_cv_localtime_cache=no],
217 [utils_cv_localtime_cache=yes],
218 [# If we have tzset, assume the worst when cross-compiling.
219 utils_cv_localtime_cache=yes])
221 # If we lack tzset, report that localtime does not cache TZ,
222 # since we can't invalidate the cache if we don't have tzset.
223 utils_cv_localtime_cache=no
225 AC_MSG_RESULT([$utils_cv_localtime_cache])
226 if test $utils_cv_localtime_cache = yes; then
227 AC_DEFINE([LOCALTIME_CACHE], [1], [FIXME])
230 # SCO-ODT-3.0 is reported to need -los to link programs using initgroups
231 AC_CHECK_FUNCS([initgroups])
232 if test $ac_cv_func_initgroups = no; then
233 AC_CHECK_LIB([os], [initgroups])
236 AC_CHECK_FUNCS([syslog])
237 if test $ac_cv_func_syslog = no; then
238 # syslog is not in the default libraries. See if it's in some other.
239 for lib in bsd socket inet; do
240 AC_CHECK_LIB([$lib], [syslog], [AC_DEFINE([HAVE_SYSLOG], [1], [FIXME])
241 LIBS="$LIBS -l$lib"; break])
245 AC_CACHE_CHECK([for 3-argument setpriority function],
246 [utils_cv_func_setpriority],
249 [[#include <sys/time.h>
250 #include <sys/resource.h>
252 [[setpriority (0, 0, 0);]])],
253 [utils_cv_func_setpriority=yes],
254 [utils_cv_func_setpriority=no])])
255 if test $utils_cv_func_setpriority = no; then
256 AC_CHECK_FUNCS([nice])
258 case $utils_cv_func_setpriority,$ac_cv_func_nice in
260 gl_ADD_PROG([optional_bin_progs], [nice])
263 AC_DEFUN([coreutils_DUMMY_1],
265 AC_REQUIRE([gl_READUTMP])
266 if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
267 gl_ADD_PROG([optional_bin_progs], [who])
268 gl_ADD_PROG([optional_bin_progs], [users])
269 gl_ADD_PROG([optional_bin_progs], [pinky])
274 AC_MSG_CHECKING([ut_host in struct utmp])
275 AC_CACHE_VAL([su_cv_func_ut_host_in_utmp],
276 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
277 #include <utmp.h>]], [[struct utmp ut; return !sizeof ut.ut_host;]])],
278 [su_cv_func_ut_host_in_utmp=yes],
279 [su_cv_func_ut_host_in_utmp=no])])
280 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmp])
281 if test $su_cv_func_ut_host_in_utmp = yes; then
283 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
286 if test -z "$have_ut_host"; then
287 AC_MSG_CHECKING([ut_host in struct utmpx])
288 AC_CACHE_VAL([su_cv_func_ut_host_in_utmpx],
289 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
290 #include <utmpx.h>]], [[struct utmpx ut; return !sizeof ut.ut_host;]])],
291 [su_cv_func_ut_host_in_utmpx=yes],
292 [su_cv_func_ut_host_in_utmpx=no])])
293 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmpx])
294 if test $su_cv_func_ut_host_in_utmpx = yes; then
295 AC_DEFINE([HAVE_UTMPX_H], [1], [FIXME])
296 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
300 GNULIB_BOOT_TIME([gl_ADD_PROG([optional_bin_progs], [uptime])])
302 AC_SYS_POSIX_TERMIOS()
303 gl_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL
305 if test $ac_cv_sys_posix_termios = yes; then
306 gl_ADD_PROG([optional_bin_progs], [stty])
308 AC_MSG_CHECKING([whether termios.h needs _XOPEN_SOURCE])
309 AC_CACHE_VAL([su_cv_sys_termios_needs_xopen_source],
310 [AC_EGREP_CPP([yes], [#include <termios.h>
313 #endif], su_cv_sys_termios_needs_xopen_source=no,
314 AC_EGREP_CPP([yes], [#define _XOPEN_SOURCE
318 #endif], su_cv_sys_termios_needs_xopen_source=yes,
319 su_cv_sys_termios_needs_xopen_source=no))])
320 AC_MSG_RESULT([$su_cv_sys_termios_needs_xopen_source])
321 test $su_cv_sys_termios_needs_xopen_source = yes &&
322 AC_DEFINE([TERMIOS_NEEDS_XOPEN_SOURCE], [1], [FIXME])
324 AC_MSG_CHECKING([c_line in struct termios])
325 AC_CACHE_VAL([su_cv_sys_c_line_in_termios],
326 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if TERMIOS_NEEDS_XOPEN_SOURCE
327 #define _XOPEN_SOURCE
329 #include <sys/types.h>
330 #include <termios.h>]], [[struct termios t; return !sizeof t.c_line;]])],
331 [su_cv_sys_c_line_in_termios=yes],
332 [su_cv_sys_c_line_in_termios=no])])
333 AC_MSG_RESULT([$su_cv_sys_c_line_in_termios])
334 test $su_cv_sys_c_line_in_termios = yes \
335 && AC_DEFINE([HAVE_C_LINE], [1], [FIXME])
338 # FIXME: note that this macro appears above, too.
339 # I'm leaving it here for now. This whole thing needs to be modernized...
342 gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H
344 if test $gl_cv_sys_tiocgwinsz_needs_termios_h = no && \
345 test $gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h = no; then
346 AC_MSG_CHECKING([TIOCGWINSZ in sys/pty.h])
347 AC_CACHE_VAL([su_cv_sys_tiocgwinsz_in_sys_pty_h],
348 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
349 #ifdef WINSIZE_IN_PTEM
350 # include <sys/stream.h>
351 # include <sys/ptem.h>
353 #include <sys/ioctl.h>
355 #include <sys/pty.h>]], [[int x = TIOCGWINSZ;]])],
356 [su_cv_sys_tiocgwinsz_in_sys_pty_h=yes],
357 [su_cv_sys_tiocgwinsz_in_sys_pty_h=no])])
358 AC_MSG_RESULT([$su_cv_sys_tiocgwinsz_in_sys_pty_h])
360 test $su_cv_sys_tiocgwinsz_in_sys_pty_h = yes \
361 && AC_DEFINE([GWINSZ_IN_SYS_PTY], [1],
362 [Define if your system defines TIOCGWINSZ in sys/pty.h.])
366 AC_CHECK_DECLS([strsignal, sys_siglist, _sys_siglist, __sys_siglist], , ,
368 #include <signal.h>])
373 # Build df only if there's a point to it.
374 if test $gl_cv_list_mounted_fs = yes && test $gl_cv_fs_space = yes; then
375 gl_ADD_PROG([optional_bin_progs], [df])
378 # Limit stdbuf to ELF systems with GCC
379 AC_MSG_CHECKING([whether this is an ELF system])
380 AC_EGREP_CPP([yes], [#if __ELF__
382 #endif], [elf_sys=yes], [elf_sys=no])
383 AC_MSG_RESULT([$elf_sys])
384 if test "$elf_sys" = "yes" && \
385 test "$GCC" = "yes"; then
386 gl_ADD_PROG([optional_bin_progs], [stdbuf])
389 ############################################################################
390 mk="$srcdir/src/Makefile.am"
391 # Extract all literal names from the definition of $(EXTRA_PROGRAMS)
392 # in $mk but don't expand the variable references.
393 # Append each literal name to $optional_bin_progs.
395 for gl_i in `sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
396 | sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
397 | tr -s '\\015\\012\\\\' ' '`; do
398 gl_ADD_PROG([optional_bin_progs], $gl_i)
401 # As above, extract literal names from the definition of $(no_install__progs)
402 # in $mk but don't expand the variable references.
404 t=`sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
405 | sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
406 | tr -s '\\015\\012\\\\' ' '`
407 # Remove any trailing space.
408 no_install_progs_default=`echo "$t"|sed 's/ $//'`
410 # Unfortunately, due to the way autoconf's AS_HELP_STRING works, the list
411 # of default-not-installed programs, "arch hostname su", must appear in two
412 # places: in this file below, and in $mk. Using "$no_install_progs_default"
413 # below cannot work. And we can't substitute the names into $mk because
414 # automake needs the literals, too.
415 # The compromise is to ensure that the space-separated list extracted
416 # above matches the literal 2nd argument below.
417 c="$srcdir/configure.ac"
418 re='^g''l_INCLUDE_EXCLUDE_PROG(.* [\[\(.*\)\]])'
419 t=`sed -n '/'"$re"'/{s/'"$re"'/\1/;s/,/ /gp
422 $no_install_progs_default) ;;
423 *) AC_MSG_ERROR([[internal error: g'l_INCLUDE_EXCLUDE_PROG's 2nd arg, $t,
424 does not match the list of default-not-installed programs
425 ($no_install_progs_default) also recorded in $mk]],
429 # Given the name of a variable containing a space-separated list of
430 # install-by-default programs and the actual list do-not-install-by-default
431 # programs, modify the former variable to reflect any "do-install" and
432 # "don't-install" requests.
433 # I.e., add any program name specified via --enable-install-program=..., and
434 # remove any program name specified via --enable-no-install-program=...
435 # Note how the second argument below is a literal, with "," separators.
436 # That is required due to the way the macro works, and since the
437 # corresponding ./configure option argument is comma-separated on input.
438 gl_INCLUDE_EXCLUDE_PROG([optional_bin_progs], [arch,hostname,su])
440 # Now that we know which programs will actually be built up, figure out
441 # which optional helper progs should be compiled.
442 optional_pkglib_progs=
443 case " $optional_bin_progs " in
444 *' stdbuf '*) gl_ADD_PROG([optional_pkglib_progs], [libstdbuf.so]) ;;
447 # Set INSTALL_SU if su installation has been requested via
448 # --enable-install-program=su.
449 AC_SUBST([INSTALL_SU])
450 case " $optional_bin_progs " in
451 *' su '*) INSTALL_SU=yes ;;
455 MAN=`echo "$optional_bin_progs "|sed 's/ /.1 /g;s/ $//'|tr -d '\\015\\012'`
457 # Change "ginstall.1" to "install.1" in $MAN.
458 MAN=`for m in $MAN; do test $m = ginstall.1 && m=install.1; echo $m; done \
459 | tr '\015\012' ' '; echo`
461 # Remove [.1, since writing a portable rule for it in man/Makefile.am
462 # is not practical. The sed LHS below uses the autoconf quadrigraph
464 MAN=`echo "$MAN"|sed 's/\@<:@\.1//'`
466 OPTIONAL_BIN_PROGS=`echo "$optional_bin_progs "|sed 's/ /\$(EXEEXT) /g;s/ $//'`
467 AC_SUBST([OPTIONAL_BIN_PROGS])
468 OPTIONAL_PKGLIB_PROGS=`echo "$optional_pkglib_progs " | sed 's/ $//'`
469 AC_SUBST([OPTIONAL_PKGLIB_PROGS])
470 NO_INSTALL_PROGS_DEFAULT=$no_install_progs_default
471 AC_SUBST([NO_INSTALL_PROGS_DEFAULT])
473 AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
475 # Arrange to rerun configure whenever the file, src/Makefile.am,
476 # containing the list of program names changes.
477 CONFIG_STATUS_DEPENDENCIES='$(top_srcdir)/src/Makefile.am'
478 AC_SUBST([CONFIG_STATUS_DEPENDENCIES])
479 ############################################################################
481 # As long as "grep 'PRI[diouxX]' po/*.pot" reports matches in
482 # translatable strings, we must use need-formatstring-macros here.
483 AM_GNU_GETTEXT([external], [need-formatstring-macros])
484 AM_GNU_GETTEXT_VERSION([0.18.1])
486 # For a test of uniq: it uses the $LOCALE_FR envvar.
497 gnulib-tests/Makefile