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])
125 # Enable this warning only with gcc-4.7 and newer. With 4.6.1 20110824,
126 # it suggests test.c's advance function may be pure, even though it
127 # increments a global variable. Oops.
128 # Normally we'd write code to test for the precise failure, but that
129 # requires a relatively large input to make gcc exhibit the failure.
130 gl_GCC_VERSION_IFELSE([4], [7], [gl_WARN_ADD([-Wsuggest-attribute=pure])])
132 # In spite of excluding -Wlogical-op above, it is enabled, as of
133 # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
134 gl_WARN_ADD([-Wno-logical-op])
136 gl_WARN_ADD([-fdiagnostics-show-option])
137 gl_WARN_ADD([-funit-at-a-time])
139 AC_SUBST([WARN_CFLAGS])
141 AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
142 AC_DEFINE([_FORTIFY_SOURCE], [2],
143 [enable compile-time and run-time bounds-checking, and some warnings])
144 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
146 # We use a slightly smaller set of warning options for lib/.
147 # Remove the following and save the result in GNULIB_WARN_CFLAGS.
149 nw="$nw -Wstrict-overflow"
150 nw="$nw -Wuninitialized"
151 nw="$nw -Wunused-macros"
152 nw="$nw -Wmissing-prototypes"
153 nw="$nw -Wold-style-definition"
154 # FIXME: remove/reenable the following two, once gnulib is adjusted.
155 nw="$nw -Wsuggest-attribute=const"
156 nw="$nw -Wsuggest-attribute=pure"
157 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
158 AC_SUBST([GNULIB_WARN_CFLAGS])
160 # For gnulib-tests, the set is slightly smaller still.
162 nw="$nw -Wstrict-prototypes"
163 gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
164 [$GNULIB_WARN_CFLAGS], [$nw])
165 AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
171 AC_CHECK_FUNCS([chroot],
172 gl_ADD_PROG([optional_bin_progs], [chroot]))
173 AC_CHECK_FUNCS([gethostid],
174 gl_ADD_PROG([optional_bin_progs], [hostid]))
178 AC_MSG_CHECKING([whether localtime caches TZ])
179 AC_CACHE_VAL([utils_cv_localtime_cache],
180 [if test x$ac_cv_func_tzset = xyes; then
181 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
185 extern char **environ;
189 for (to = from = environ; (*to = *from); from++)
190 if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
195 time_t now = time ((time_t *) 0);
196 int hour_GMT0, hour_unset;
197 if (putenv ("TZ=GMT0") != 0)
199 hour_GMT0 = localtime (&now)->tm_hour;
201 hour_unset = localtime (&now)->tm_hour;
202 if (putenv ("TZ=PST8") != 0)
204 if (localtime (&now)->tm_hour == hour_GMT0)
207 if (localtime (&now)->tm_hour != hour_unset)
211 [utils_cv_localtime_cache=no],
212 [utils_cv_localtime_cache=yes],
213 [# If we have tzset, assume the worst when cross-compiling.
214 utils_cv_localtime_cache=yes])
216 # If we lack tzset, report that localtime does not cache TZ,
217 # since we can't invalidate the cache if we don't have tzset.
218 utils_cv_localtime_cache=no
220 AC_MSG_RESULT([$utils_cv_localtime_cache])
221 if test $utils_cv_localtime_cache = yes; then
222 AC_DEFINE([LOCALTIME_CACHE], [1], [FIXME])
225 # SCO-ODT-3.0 is reported to need -los to link programs using initgroups
226 AC_CHECK_FUNCS([initgroups])
227 if test $ac_cv_func_initgroups = no; then
228 AC_CHECK_LIB([os], [initgroups])
231 AC_CHECK_FUNCS([syslog])
232 if test $ac_cv_func_syslog = no; then
233 # syslog is not in the default libraries. See if it's in some other.
234 for lib in bsd socket inet; do
235 AC_CHECK_LIB([$lib], [syslog], [AC_DEFINE([HAVE_SYSLOG], [1], [FIXME])
236 LIBS="$LIBS -l$lib"; break])
240 AC_CACHE_CHECK([for 3-argument setpriority function],
241 [utils_cv_func_setpriority],
244 [[#include <sys/time.h>
245 #include <sys/resource.h>
247 [[setpriority (0, 0, 0);]])],
248 [utils_cv_func_setpriority=yes],
249 [utils_cv_func_setpriority=no])])
250 if test $utils_cv_func_setpriority = no; then
251 AC_CHECK_FUNCS([nice])
253 case $utils_cv_func_setpriority,$ac_cv_func_nice in
255 gl_ADD_PROG([optional_bin_progs], [nice])
258 AC_DEFUN([coreutils_DUMMY_1],
260 AC_REQUIRE([gl_READUTMP])
261 if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
262 gl_ADD_PROG([optional_bin_progs], [who])
263 gl_ADD_PROG([optional_bin_progs], [users])
264 gl_ADD_PROG([optional_bin_progs], [pinky])
269 AC_MSG_CHECKING([ut_host in struct utmp])
270 AC_CACHE_VAL([su_cv_func_ut_host_in_utmp],
271 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
272 #include <utmp.h>]], [[struct utmp ut; return !sizeof ut.ut_host;]])],
273 [su_cv_func_ut_host_in_utmp=yes],
274 [su_cv_func_ut_host_in_utmp=no])])
275 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmp])
276 if test $su_cv_func_ut_host_in_utmp = yes; then
278 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
281 if test -z "$have_ut_host"; then
282 AC_MSG_CHECKING([ut_host in struct utmpx])
283 AC_CACHE_VAL([su_cv_func_ut_host_in_utmpx],
284 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
285 #include <utmpx.h>]], [[struct utmpx ut; return !sizeof ut.ut_host;]])],
286 [su_cv_func_ut_host_in_utmpx=yes],
287 [su_cv_func_ut_host_in_utmpx=no])])
288 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmpx])
289 if test $su_cv_func_ut_host_in_utmpx = yes; then
290 AC_DEFINE([HAVE_UTMPX_H], [1], [FIXME])
291 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
295 GNULIB_BOOT_TIME([gl_ADD_PROG([optional_bin_progs], [uptime])])
297 AC_SYS_POSIX_TERMIOS()
298 gl_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL
300 if test $ac_cv_sys_posix_termios = yes; then
301 gl_ADD_PROG([optional_bin_progs], [stty])
303 AC_MSG_CHECKING([whether termios.h needs _XOPEN_SOURCE])
304 AC_CACHE_VAL([su_cv_sys_termios_needs_xopen_source],
305 [AC_EGREP_CPP([yes], [#include <termios.h>
308 #endif], su_cv_sys_termios_needs_xopen_source=no,
309 AC_EGREP_CPP([yes], [#define _XOPEN_SOURCE
313 #endif], su_cv_sys_termios_needs_xopen_source=yes,
314 su_cv_sys_termios_needs_xopen_source=no))])
315 AC_MSG_RESULT([$su_cv_sys_termios_needs_xopen_source])
316 test $su_cv_sys_termios_needs_xopen_source = yes &&
317 AC_DEFINE([TERMIOS_NEEDS_XOPEN_SOURCE], [1], [FIXME])
319 AC_MSG_CHECKING([c_line in struct termios])
320 AC_CACHE_VAL([su_cv_sys_c_line_in_termios],
321 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if TERMIOS_NEEDS_XOPEN_SOURCE
322 #define _XOPEN_SOURCE
324 #include <sys/types.h>
325 #include <termios.h>]], [[struct termios t; return !sizeof t.c_line;]])],
326 [su_cv_sys_c_line_in_termios=yes],
327 [su_cv_sys_c_line_in_termios=no])])
328 AC_MSG_RESULT([$su_cv_sys_c_line_in_termios])
329 test $su_cv_sys_c_line_in_termios = yes \
330 && AC_DEFINE([HAVE_C_LINE], [1], [FIXME])
333 # FIXME: note that this macro appears above, too.
334 # I'm leaving it here for now. This whole thing needs to be modernized...
337 gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H
339 if test $gl_cv_sys_tiocgwinsz_needs_termios_h = no && \
340 test $gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h = no; then
341 AC_MSG_CHECKING([TIOCGWINSZ in sys/pty.h])
342 AC_CACHE_VAL([su_cv_sys_tiocgwinsz_in_sys_pty_h],
343 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
344 #ifdef WINSIZE_IN_PTEM
345 # include <sys/stream.h>
346 # include <sys/ptem.h>
348 #include <sys/ioctl.h>
350 #include <sys/pty.h>]], [[int x = TIOCGWINSZ;]])],
351 [su_cv_sys_tiocgwinsz_in_sys_pty_h=yes],
352 [su_cv_sys_tiocgwinsz_in_sys_pty_h=no])])
353 AC_MSG_RESULT([$su_cv_sys_tiocgwinsz_in_sys_pty_h])
355 test $su_cv_sys_tiocgwinsz_in_sys_pty_h = yes \
356 && AC_DEFINE([GWINSZ_IN_SYS_PTY], [1],
357 [Define if your system defines TIOCGWINSZ in sys/pty.h.])
361 AC_CHECK_DECLS([strsignal, sys_siglist, _sys_siglist, __sys_siglist], , ,
363 #include <signal.h>])
368 # Build df only if there's a point to it.
369 if test $gl_cv_list_mounted_fs = yes && test $gl_cv_fs_space = yes; then
370 gl_ADD_PROG([optional_bin_progs], [df])
373 # Limit stdbuf to ELF systems with GCC
374 AC_MSG_CHECKING([whether this is an ELF system])
375 AC_EGREP_CPP([yes], [#if __ELF__
377 #endif], [elf_sys=yes], [elf_sys=no])
378 AC_MSG_RESULT([$elf_sys])
379 if test "$elf_sys" = "yes" && \
380 test "$GCC" = "yes"; then
381 gl_ADD_PROG([optional_bin_progs], [stdbuf])
384 ############################################################################
385 mk="$srcdir/src/Makefile.am"
386 # Extract all literal names from the definition of $(EXTRA_PROGRAMS)
387 # in $mk but don't expand the variable references.
388 # Append each literal name to $optional_bin_progs.
390 for gl_i in `sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
391 | sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
392 | tr -s '\\015\\012\\\\' ' '`; do
393 gl_ADD_PROG([optional_bin_progs], $gl_i)
396 # As above, extract literal names from the definition of $(no_install__progs)
397 # in $mk but don't expand the variable references.
399 t=`sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
400 | sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
401 | tr -s '\\015\\012\\\\' ' '`
402 # Remove any trailing space.
403 no_install_progs_default=`echo "$t"|sed 's/ $//'`
405 # Unfortunately, due to the way autoconf's AS_HELP_STRING works, the list
406 # of default-not-installed programs, "arch hostname su", must appear in two
407 # places: in this file below, and in $mk. Using "$no_install_progs_default"
408 # below cannot work. And we can't substitute the names into $mk because
409 # automake needs the literals, too.
410 # The compromise is to ensure that the space-separated list extracted
411 # above matches the literal 2nd argument below.
412 c="$srcdir/configure.ac"
413 re='^g''l_INCLUDE_EXCLUDE_PROG(.* [\[\(.*\)\]])'
414 t=`sed -n '/'"$re"'/{s/'"$re"'/\1/;s/,/ /gp
417 $no_install_progs_default) ;;
418 *) AC_MSG_ERROR([[internal error: g'l_INCLUDE_EXCLUDE_PROG's 2nd arg, $t,
419 does not match the list of default-not-installed programs
420 ($no_install_progs_default) also recorded in $mk]],
424 # Given the name of a variable containing a space-separated list of
425 # install-by-default programs and the actual list do-not-install-by-default
426 # programs, modify the former variable to reflect any "do-install" and
427 # "don't-install" requests.
428 # I.e., add any program name specified via --enable-install-program=..., and
429 # remove any program name specified via --enable-no-install-program=...
430 # Note how the second argument below is a literal, with "," separators.
431 # That is required due to the way the macro works, and since the
432 # corresponding ./configure option argument is comma-separated on input.
433 gl_INCLUDE_EXCLUDE_PROG([optional_bin_progs], [arch,hostname,su])
435 # Now that we know which programs will actually be built up, figure out
436 # which optional helper progs should be compiled.
437 optional_pkglib_progs=
438 case " $optional_bin_progs " in
439 *' stdbuf '*) gl_ADD_PROG([optional_pkglib_progs], [libstdbuf.so]) ;;
442 # Set INSTALL_SU if su installation has been requested via
443 # --enable-install-program=su.
444 AC_SUBST([INSTALL_SU])
445 case " $optional_bin_progs " in
446 *' su '*) INSTALL_SU=yes ;;
450 MAN=`echo "$optional_bin_progs "|sed 's/ /.1 /g;s/ $//'|tr -d '\\015\\012'`
452 # Change "ginstall.1" to "install.1" in $MAN.
453 MAN=`for m in $MAN; do test $m = ginstall.1 && m=install.1; echo $m; done \
454 | tr '\015\012' ' '; echo`
456 # Remove [.1, since writing a portable rule for it in man/Makefile.am
457 # is not practical. The sed LHS below uses the autoconf quadrigraph
459 MAN=`echo "$MAN"|sed 's/\@<:@\.1//'`
461 OPTIONAL_BIN_PROGS=`echo "$optional_bin_progs "|sed 's/ /\$(EXEEXT) /g;s/ $//'`
462 AC_SUBST([OPTIONAL_BIN_PROGS])
463 OPTIONAL_PKGLIB_PROGS=`echo "$optional_pkglib_progs " | sed 's/ $//'`
464 AC_SUBST([OPTIONAL_PKGLIB_PROGS])
465 NO_INSTALL_PROGS_DEFAULT=$no_install_progs_default
466 AC_SUBST([NO_INSTALL_PROGS_DEFAULT])
468 AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
470 # Arrange to rerun configure whenever the file, src/Makefile.am,
471 # containing the list of program names changes.
472 CONFIG_STATUS_DEPENDENCIES='$(top_srcdir)/src/Makefile.am'
473 AC_SUBST([CONFIG_STATUS_DEPENDENCIES])
474 ############################################################################
476 # As long as "grep 'PRI[diouxX]' po/*.pot" reports matches in
477 # translatable strings, we must use need-formatstring-macros here.
478 AM_GNU_GETTEXT([external], [need-formatstring-macros])
479 AM_GNU_GETTEXT_VERSION([0.18.1])
481 # For a test of uniq: it uses the $LOCALE_FR envvar.
492 gnulib-tests/Makefile