2 # Process this file with autoconf to produce a configure script.
4 # Copyright (C) 1991-2012 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([1.11.2 no-dist-gzip dist-xz color-tests parallel-tests
37 AM_SILENT_RULES([yes]) # make --enable-silent-rules the default.
39 dnl POSIXCHECK is worthwhile for maintainers, but adds several seconds
40 dnl (more than 10% execution time) to ./configure, with no benefit for
41 dnl most users. Using it to look for bugs requires:
42 dnl GNULIB_POSIXCHECK=1 autoreconf -f
46 dnl make CFLAGS=-DGNULIB_POSIXCHECK=1
47 dnl FIXME: Once we figure out how to avoid false positives, we should
48 dnl have 'make my-distcheck' in dist-check.mk exercise this.
49 m4_syscmd([test "${GNULIB_POSIXCHECK+set}" = set])
50 m4_if(m4_sysval, [0], [], [dnl
51 gl_ASSERT_NO_GNULIB_POSIXCHECK])
56 AC_PROG_GCC_TRADITIONAL
63 # The test suite needs to know if we have a working perl.
64 # FIXME: this is suboptimal. Ideally, we would be able to call gl_PERL
65 # with an ACTION-IF-NOT-FOUND argument ...
67 case $PERL in *"/missing "*) cu_have_perl=no;; esac
68 AM_CONDITIONAL([HAVE_PERL], [test $cu_have_perl = yes])
70 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
71 # ------------------------------------------------
72 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
73 # Otherwise, run RUN-IF-NOT-FOUND.
74 AC_DEFUN([gl_GCC_VERSION_IFELSE],
78 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
81 # error "your version of gcc is older than $1.$2"
88 AC_ARG_ENABLE([gcc-warnings],
89 [AS_HELP_STRING([--enable-gcc-warnings],
90 [turn on many GCC warnings (for developers; best with GNU make)])],
93 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
95 gl_gcc_warnings=$enableval],
97 # GCC provides fine-grained control over diagnostics which
98 # is used in gnulib for example to suppress warnings from
99 # certain sections of code. So if this is available and
100 # we're running from a git repo, then auto enable the warnings.
102 gl_GCC_VERSION_IFELSE([4], [6], [test -d "$srcdir"/.git && gl_gcc_warnings=yes])]
105 if test "$gl_gcc_warnings" = yes; then
106 gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
107 AC_SUBST([WERROR_CFLAGS])
110 # This, $nw, is the list of warnings we disable.
111 nw="$nw -Wdeclaration-after-statement" # too useful to forbid
112 nw="$nw -Waggregate-return" # anachronistic
113 nw="$nw -Wlong-long" # C90 is anachronistic (lib/gethrxtime.h)
114 nw="$nw -Wc++-compat" # We don't care about C++ compilers
115 nw="$nw -Wundef" # Warns on '#if GNULIB_FOO' etc in gnulib
116 nw="$nw -Wtraditional" # Warns on #elif which we use often
117 nw="$nw -Wcast-qual" # Too many warnings for now
118 nw="$nw -Wconversion" # Too many warnings for now
119 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
120 nw="$nw -Wsign-conversion" # Too many warnings for now
121 nw="$nw -Wtraditional-conversion" # Too many warnings for now
122 nw="$nw -Wunreachable-code" # Too many warnings for now
123 nw="$nw -Wpadded" # Our structs are not padded
124 nw="$nw -Wredundant-decls" # openat.h declares e.g., mkdirat
125 nw="$nw -Wlogical-op" # any use of fwrite provokes this
126 nw="$nw -Wformat-nonliteral" # who.c and pinky.c strftime uses
127 nw="$nw -Wvla" # warnings in gettext.h
128 nw="$nw -Wnested-externs" # use of XARGMATCH/verify_function__
129 nw="$nw -Wswitch-enum" # Too many warnings for now
130 nw="$nw -Wswitch-default" # Too many warnings for now
131 nw="$nw -Wstack-protector" # not worth working around
132 # things I might fix soon:
133 nw="$nw -Wfloat-equal" # sort.c, seq.c
134 nw="$nw -Wmissing-format-attribute" # copy.c
135 nw="$nw -Wunsafe-loop-optimizations" # a few src/*.c
136 nw="$nw -Winline" # system.h's readdir_ignoring_dot_and_dotdot
137 nw="$nw -Wsuggest-attribute=format" # warns about copy.c and factor.c
139 # Using -Wstrict-overflow is a pain, but the alternative is worse.
140 # For an example, see the code that provoked this report:
141 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498
142 # Code like that still infloops with gcc-4.6.0 and -O2. Scary indeed.
144 gl_MANYWARN_ALL_GCC([ws])
145 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
149 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
150 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
151 gl_WARN_ADD([-Wsuggest-attribute=const])
152 gl_WARN_ADD([-Wsuggest-attribute=noreturn])
153 gl_WARN_ADD([-Wno-format-nonliteral])
155 # Enable this warning only with gcc-4.7 and newer. With 4.6.2 20111027,
156 # it suggests test.c's advance function may be pure, even though it
157 # increments a global variable. Oops.
158 # Normally we'd write code to test for the precise failure, but that
159 # requires a relatively large input to make gcc exhibit the failure.
160 gl_GCC_VERSION_IFELSE([4], [7], [gl_WARN_ADD([-Wsuggest-attribute=pure])])
162 # In spite of excluding -Wlogical-op above, it is enabled, as of
163 # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
164 gl_WARN_ADD([-Wno-logical-op])
166 gl_WARN_ADD([-fdiagnostics-show-option])
167 gl_WARN_ADD([-funit-at-a-time])
169 AC_SUBST([WARN_CFLAGS])
171 AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
172 AH_VERBATIM([FORTIFY_SOURCE],
173 [/* Enable compile-time and run-time bounds-checking, and some warnings,
174 without upsetting glibc 2.15+. */
175 #if !defined _FORTIFY_SOURCE && defined __OPTIMIZE__ && __OPTIMIZE__
176 # define _FORTIFY_SOURCE 2
179 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
181 # We use a slightly smaller set of warning options for lib/.
182 # Remove the following and save the result in GNULIB_WARN_CFLAGS.
184 nw="$nw -Wstrict-overflow"
185 nw="$nw -Wuninitialized"
186 nw="$nw -Wunused-macros"
187 nw="$nw -Wmissing-prototypes"
188 nw="$nw -Wold-style-definition"
189 # FIXME: it may be easy to remove this, since it affects only one file:
190 # the snprintf call at ftoastr.c:132.
191 nw="$nw -Wdouble-promotion"
192 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
193 AC_SUBST([GNULIB_WARN_CFLAGS])
195 # For gnulib-tests, the set is slightly smaller still.
197 nw="$nw -Wstrict-prototypes"
198 # It's not worth being this picky about test programs.
199 nw="$nw -Wsuggest-attribute=const"
200 nw="$nw -Wsuggest-attribute=pure"
201 gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
202 [$GNULIB_WARN_CFLAGS], [$nw])
203 AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
209 AC_CHECK_FUNCS([chroot],
210 gl_ADD_PROG([optional_bin_progs], [chroot]))
211 AC_CHECK_FUNCS([gethostid],
212 gl_ADD_PROG([optional_bin_progs], [hostid]))
216 AC_MSG_CHECKING([whether localtime caches TZ])
217 AC_CACHE_VAL([utils_cv_localtime_cache],
218 [if test x$ac_cv_func_tzset = xyes; then
219 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
223 extern char **environ;
227 for (to = from = environ; (*to = *from); from++)
228 if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
233 time_t now = time ((time_t *) 0);
234 int hour_GMT0, hour_unset;
235 if (putenv ("TZ=GMT0") != 0)
237 hour_GMT0 = localtime (&now)->tm_hour;
239 hour_unset = localtime (&now)->tm_hour;
240 if (putenv ("TZ=PST8") != 0)
242 if (localtime (&now)->tm_hour == hour_GMT0)
245 if (localtime (&now)->tm_hour != hour_unset)
249 [utils_cv_localtime_cache=no],
250 [utils_cv_localtime_cache=yes],
251 [# If we have tzset, assume the worst when cross-compiling.
252 utils_cv_localtime_cache=yes])
254 # If we lack tzset, report that localtime does not cache TZ,
255 # since we can't invalidate the cache if we don't have tzset.
256 utils_cv_localtime_cache=no
258 AC_MSG_RESULT([$utils_cv_localtime_cache])
259 if test $utils_cv_localtime_cache = yes; then
260 AC_DEFINE([LOCALTIME_CACHE], [1], [FIXME])
263 # SCO-ODT-3.0 is reported to need -los to link programs using initgroups
264 AC_CHECK_FUNCS([initgroups])
265 if test $ac_cv_func_initgroups = no; then
266 AC_CHECK_LIB([os], [initgroups])
269 AC_CHECK_FUNCS([syslog])
270 if test $ac_cv_func_syslog = no; then
271 # syslog is not in the default libraries. See if it's in some other.
272 for lib in bsd socket inet; do
273 AC_CHECK_LIB([$lib], [syslog], [AC_DEFINE([HAVE_SYSLOG], [1], [FIXME])
274 LIBS="$LIBS -l$lib"; break])
278 AC_CACHE_CHECK([for 3-argument setpriority function],
279 [utils_cv_func_setpriority],
282 [[#include <sys/time.h>
283 #include <sys/resource.h>
285 [[setpriority (0, 0, 0);]])],
286 [utils_cv_func_setpriority=yes],
287 [utils_cv_func_setpriority=no])])
288 if test $utils_cv_func_setpriority = no; then
289 AC_CHECK_FUNCS([nice])
291 case $utils_cv_func_setpriority,$ac_cv_func_nice in
293 gl_ADD_PROG([optional_bin_progs], [nice])
296 AC_DEFUN([coreutils_DUMMY_1],
298 AC_REQUIRE([gl_READUTMP])
299 if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
300 gl_ADD_PROG([optional_bin_progs], [who])
301 gl_ADD_PROG([optional_bin_progs], [users])
302 gl_ADD_PROG([optional_bin_progs], [pinky])
307 AC_MSG_CHECKING([ut_host in struct utmp])
308 AC_CACHE_VAL([su_cv_func_ut_host_in_utmp],
309 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
310 #include <utmp.h>]], [[struct utmp ut; return !sizeof ut.ut_host;]])],
311 [su_cv_func_ut_host_in_utmp=yes],
312 [su_cv_func_ut_host_in_utmp=no])])
313 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmp])
314 if test $su_cv_func_ut_host_in_utmp = yes; then
316 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
319 if test -z "$have_ut_host"; then
320 AC_MSG_CHECKING([ut_host in struct utmpx])
321 AC_CACHE_VAL([su_cv_func_ut_host_in_utmpx],
322 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
323 #include <utmpx.h>]], [[struct utmpx ut; return !sizeof ut.ut_host;]])],
324 [su_cv_func_ut_host_in_utmpx=yes],
325 [su_cv_func_ut_host_in_utmpx=no])])
326 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmpx])
327 if test $su_cv_func_ut_host_in_utmpx = yes; then
328 AC_DEFINE([HAVE_UTMPX_H], [1], [FIXME])
329 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
333 GNULIB_BOOT_TIME([gl_ADD_PROG([optional_bin_progs], [uptime])])
335 AC_SYS_POSIX_TERMIOS()
336 gl_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL
338 if test $ac_cv_sys_posix_termios = yes; then
339 gl_ADD_PROG([optional_bin_progs], [stty])
341 AC_MSG_CHECKING([whether termios.h needs _XOPEN_SOURCE])
342 AC_CACHE_VAL([su_cv_sys_termios_needs_xopen_source],
343 [AC_EGREP_CPP([yes], [#include <termios.h>
346 #endif], su_cv_sys_termios_needs_xopen_source=no,
347 AC_EGREP_CPP([yes], [#define _XOPEN_SOURCE
351 #endif], su_cv_sys_termios_needs_xopen_source=yes,
352 su_cv_sys_termios_needs_xopen_source=no))])
353 AC_MSG_RESULT([$su_cv_sys_termios_needs_xopen_source])
354 test $su_cv_sys_termios_needs_xopen_source = yes &&
355 AC_DEFINE([TERMIOS_NEEDS_XOPEN_SOURCE], [1], [FIXME])
357 AC_MSG_CHECKING([c_line in struct termios])
358 AC_CACHE_VAL([su_cv_sys_c_line_in_termios],
359 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if TERMIOS_NEEDS_XOPEN_SOURCE
360 #define _XOPEN_SOURCE
362 #include <sys/types.h>
363 #include <termios.h>]], [[struct termios t; return !sizeof t.c_line;]])],
364 [su_cv_sys_c_line_in_termios=yes],
365 [su_cv_sys_c_line_in_termios=no])])
366 AC_MSG_RESULT([$su_cv_sys_c_line_in_termios])
367 test $su_cv_sys_c_line_in_termios = yes \
368 && AC_DEFINE([HAVE_C_LINE], [1], [FIXME])
371 # FIXME: note that this macro appears above, too.
372 # I'm leaving it here for now. This whole thing needs to be modernized...
375 gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H
377 if test $gl_cv_sys_tiocgwinsz_needs_termios_h = no && \
378 test $gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h = no; then
379 AC_MSG_CHECKING([TIOCGWINSZ in sys/pty.h])
380 AC_CACHE_VAL([su_cv_sys_tiocgwinsz_in_sys_pty_h],
381 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
382 #ifdef WINSIZE_IN_PTEM
383 # include <sys/stream.h>
384 # include <sys/ptem.h>
386 #include <sys/ioctl.h>
388 #include <sys/pty.h>]], [[int x = TIOCGWINSZ;]])],
389 [su_cv_sys_tiocgwinsz_in_sys_pty_h=yes],
390 [su_cv_sys_tiocgwinsz_in_sys_pty_h=no])])
391 AC_MSG_RESULT([$su_cv_sys_tiocgwinsz_in_sys_pty_h])
393 test $su_cv_sys_tiocgwinsz_in_sys_pty_h = yes \
394 && AC_DEFINE([GWINSZ_IN_SYS_PTY], [1],
395 [Define if your system defines TIOCGWINSZ in sys/pty.h.])
399 AC_CHECK_DECLS([strsignal, sys_siglist, _sys_siglist, __sys_siglist], , ,
401 #include <signal.h>])
405 # Build df only if there's a point to it.
406 if test $gl_cv_list_mounted_fs = yes && test $gl_cv_fs_space = yes; then
407 gl_ADD_PROG([optional_bin_progs], [df])
410 # Limit stdbuf to ELF systems with GCC
411 AC_MSG_CHECKING([whether this is an ELF system])
412 AC_EGREP_CPP([yes], [#if __ELF__
414 #endif], [elf_sys=yes], [elf_sys=no])
415 AC_MSG_RESULT([$elf_sys])
416 if test "$elf_sys" = "yes" && \
417 test "$GCC" = "yes"; then
418 gl_ADD_PROG([optional_bin_progs], [stdbuf])
421 ############################################################################
423 dnl Autogenerated by the 'gen-lists-of-programs.sh' auxiliary script.
424 dnl Issue proper calls to the macros gl_INCLUDE_EXCLUDE_PROG and
425 dnl gl_ADD_PROG (updating $optional_bin_progs), and generate the list
426 dnl of coreutils programs to be built only upon explicit user request,
427 dnl saving that list in the $no_install_progs_default shell variable.
428 m4_include([m4/cu-progs.m4])
430 # Now that we know which programs will actually be built, determine
431 # which optional helper progs should be compiled.
432 case " $optional_bin_progs " in
433 *' stdbuf '*) pkglibexec_PROGRAMS='src/libstdbuf.so';;
434 *) pkglibexec_PROGRAMS='';;
438 for p in $optional_bin_progs; do
439 # Change "ginstall.1" to "install.1".
440 test $p = ginstall && p=install
441 # Ignore the "[" program, since writing a portable make rule to
442 # generate its manpage is not practical.
443 dnl Use the autoconf-provided quadrigraph to represent "[",
444 dnl otherwise we will incur in dreadful quoting issues.
445 test x$p = x'@<:@' && continue
449 # Not installed by "make install", but must be built when creating
450 # a distribution tarball.
451 EXTRA_MANS=`for p in $no_install_progs_default; do echo man/$p.1; done`
453 # The programs built and installed by "make && make install".
454 # Since this is AC_SUBST'd, Automake won't be able to perform rewrite
455 # with $(EXEEXT) appending on it, so we have to do it ourselves -- in
456 # this case, only for $(bin_PROGRAMS).
458 for p in $optional_bin_progs; do echo src/"$p"'$(EXEEXT)'; done`
460 # Normalize whitespace.
461 man1_MANS=`echo $man1_MANS`
462 EXTRA_MANS=`echo $EXTRA_MANS`
463 bin_PROGRAMS=`echo $bin_PROGRAMS`
464 pkglibexec_PROGS=`echo $pkglibexec_PROGRAMS`
466 AC_SUBST([bin_PROGRAMS]) AM_SUBST_NOTMAKE([bin_PROGRAMS])
467 AC_SUBST([pkglibexec_PROGRAMS]) AM_SUBST_NOTMAKE([pkglibexec_PROGRAMS])
468 AC_SUBST([man1_MANS]) AM_SUBST_NOTMAKE([man1_MANS])
469 AC_SUBST([EXTRA_MANS]) AM_SUBST_NOTMAKE([EXTRA_MANS])
471 AC_SUBST([built_programs], [$optional_bin_progs])
473 AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
475 ############################################################################
477 # As long as "grep 'PRI[diouxX]' po/*.pot" reports matches in
478 # translatable strings, we must use need-formatstring-macros here.
479 AM_GNU_GETTEXT([external], [need-formatstring-macros])
480 AM_GNU_GETTEXT_VERSION([0.18.1])
482 # For a test of uniq: it uses the $LOCALE_FR envvar.
488 gnulib-tests/Makefile