2 # Process this file with autoconf to produce a configure script.
4 # Copyright (C) 1991, 1993-2010 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 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 if test "$gl_gcc_warnings" = yes; then
60 gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
61 AC_SUBST([WERROR_CFLAGS])
64 # This, $nw, is the list of warnings we disable.
65 nw="$nw -Wdeclaration-after-statement" # too useful to forbid
66 nw="$nw -Waggregate-return" # anachronistic
67 nw="$nw -Wlong-long" # C90 is anachronistic (lib/gethrxtime.h)
68 nw="$nw -Wc++-compat" # We don't care about C++ compilers
69 nw="$nw -Wundef" # Warns on '#if GNULIB_FOO' etc in gnulib
70 nw="$nw -Wtraditional" # Warns on #elif which we use often
71 nw="$nw -Wcast-qual" # Too many warnings for now
72 nw="$nw -Wconversion" # Too many warnings for now
73 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
74 nw="$nw -Wsign-conversion" # Too many warnings for now
75 nw="$nw -Wtraditional-conversion" # Too many warnings for now
76 nw="$nw -Wunreachable-code" # Too many warnings for now
77 nw="$nw -Wpadded" # Our structs are not padded
78 nw="$nw -Wredundant-decls" # openat.h declares e.g., mkdirat
79 nw="$nw -Wlogical-op" # any use of fwrite provokes this
80 nw="$nw -Wformat-nonliteral" # who.c and pinky.c strftime uses
81 nw="$nw -Wvla" # warnings in gettext.h
82 nw="$nw -Wnested-externs" # use of XARGMATCH/verify_function__
83 nw="$nw -Wswitch-enum" # Too many warnings for now
84 nw="$nw -Wswitch-default" # Too many warnings for now
85 nw="$nw -Wstack-protector" # not worth working around
86 # things I might fix soon:
87 nw="$nw -Wfloat-equal" # sort.c, seq.c
88 nw="$nw -Wmissing-format-attribute" # copy.c
89 nw="$nw -Wunsafe-loop-optimizations" # a few src/*.c
90 nw="$nw -Winline" # system.h's readdir_ignoring_dot_and_dotdot
91 nw="$nw -Wstrict-overflow" # expr.c, pr.c, tr.c, factor.c
92 # ?? -Wstrict-overflow
94 gl_MANYWARN_ALL_GCC([ws])
95 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
99 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
100 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
101 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
103 # In spite of excluding -Wlogical-op above, it is enabled, as of
104 # gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
105 gl_WARN_ADD([-Wno-logical-op])
107 gl_WARN_ADD([-fdiagnostics-show-option])
108 gl_WARN_ADD([-funit-at-a-time])
110 AC_SUBST([WARN_CFLAGS])
112 AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
113 AC_DEFINE([_FORTIFY_SOURCE], [2],
114 [enable compile-time and run-time bounds-checking, and some warnings])
115 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
117 # We use a slightly smaller set of warning options for lib/.
118 # Remove the following and save the result in GNULIB_WARN_CFLAGS.
120 nw="$nw -Wuninitialized"
121 nw="$nw -Wunused-macros"
122 nw="$nw -Wmissing-prototypes"
123 nw="$nw -Wold-style-definition"
124 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
125 AC_SUBST([GNULIB_WARN_CFLAGS])
127 # For gnulib-tests, the set is slightly smaller still.
129 nw="$nw -Wstrict-prototypes"
130 gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
131 [$GNULIB_WARN_CFLAGS], [$nw])
132 AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
138 AC_CHECK_FUNCS([chroot],
139 gl_ADD_PROG([optional_bin_progs], [chroot]))
140 AC_CHECK_FUNCS([gethostid],
141 gl_ADD_PROG([optional_bin_progs], [hostid]))
145 AC_MSG_CHECKING([whether localtime caches TZ])
146 AC_CACHE_VAL([utils_cv_localtime_cache],
147 [if test x$ac_cv_func_tzset = xyes; then
148 AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
152 extern char **environ;
156 for (to = from = environ; (*to = *from); from++)
157 if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
162 time_t now = time ((time_t *) 0);
163 int hour_GMT0, hour_unset;
164 if (putenv ("TZ=GMT0") != 0)
166 hour_GMT0 = localtime (&now)->tm_hour;
168 hour_unset = localtime (&now)->tm_hour;
169 if (putenv ("TZ=PST8") != 0)
171 if (localtime (&now)->tm_hour == hour_GMT0)
174 if (localtime (&now)->tm_hour != hour_unset)
178 [utils_cv_localtime_cache=no],
179 [utils_cv_localtime_cache=yes],
180 [# If we have tzset, assume the worst when cross-compiling.
181 utils_cv_localtime_cache=yes])
183 # If we lack tzset, report that localtime does not cache TZ,
184 # since we can't invalidate the cache if we don't have tzset.
185 utils_cv_localtime_cache=no
187 AC_MSG_RESULT([$utils_cv_localtime_cache])
188 if test $utils_cv_localtime_cache = yes; then
189 AC_DEFINE([LOCALTIME_CACHE], [1], [FIXME])
192 # SCO-ODT-3.0 is reported to need -los to link programs using initgroups
193 AC_CHECK_FUNCS([initgroups])
194 if test $ac_cv_func_initgroups = no; then
195 AC_CHECK_LIB([os], [initgroups])
198 AC_CHECK_FUNCS([syslog])
199 if test $ac_cv_func_syslog = no; then
200 # syslog is not in the default libraries. See if it's in some other.
201 for lib in bsd socket inet; do
202 AC_CHECK_LIB([$lib], [syslog], [AC_DEFINE([HAVE_SYSLOG], [1], [FIXME])
203 LIBS="$LIBS -l$lib"; break])
207 AC_CACHE_CHECK([for 3-argument setpriority function],
208 [utils_cv_func_setpriority],
211 [[#include <sys/time.h>
212 #include <sys/resource.h>
214 [[setpriority (0, 0, 0);]])],
215 [utils_cv_func_setpriority=yes],
216 [utils_cv_func_setpriority=no])])
217 if test $utils_cv_func_setpriority = no; then
218 AC_CHECK_FUNCS([nice])
220 case $utils_cv_func_setpriority,$ac_cv_func_nice in
222 gl_ADD_PROG([optional_bin_progs], [nice])
225 AC_DEFUN([coreutils_DUMMY_1],
227 AC_REQUIRE([gl_READUTMP])
228 if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
229 gl_ADD_PROG([optional_bin_progs], [who])
230 gl_ADD_PROG([optional_bin_progs], [users])
231 gl_ADD_PROG([optional_bin_progs], [pinky])
236 AC_MSG_CHECKING([ut_host in struct utmp])
237 AC_CACHE_VAL([su_cv_func_ut_host_in_utmp],
238 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
239 #include <utmp.h>]], [[struct utmp ut; return !sizeof ut.ut_host;]])],
240 [su_cv_func_ut_host_in_utmp=yes],
241 [su_cv_func_ut_host_in_utmp=no])])
242 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmp])
243 if test $su_cv_func_ut_host_in_utmp = yes; then
245 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
248 if test -z "$have_ut_host"; then
249 AC_MSG_CHECKING([ut_host in struct utmpx])
250 AC_CACHE_VAL([su_cv_func_ut_host_in_utmpx],
251 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
252 #include <utmpx.h>]], [[struct utmpx ut; return !sizeof ut.ut_host;]])],
253 [su_cv_func_ut_host_in_utmpx=yes],
254 [su_cv_func_ut_host_in_utmpx=no])])
255 AC_MSG_RESULT([$su_cv_func_ut_host_in_utmpx])
256 if test $su_cv_func_ut_host_in_utmpx = yes; then
257 AC_DEFINE([HAVE_UTMPX_H], [1], [FIXME])
258 AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
262 GNULIB_BOOT_TIME([gl_ADD_PROG([optional_bin_progs], [uptime])])
264 AC_SYS_POSIX_TERMIOS()
265 gl_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL
267 if test $ac_cv_sys_posix_termios = yes; then
268 gl_ADD_PROG([optional_bin_progs], [stty])
270 AC_MSG_CHECKING([whether termios.h needs _XOPEN_SOURCE])
271 AC_CACHE_VAL([su_cv_sys_termios_needs_xopen_source],
272 [AC_EGREP_CPP([yes], [#include <termios.h>
275 #endif], su_cv_sys_termios_needs_xopen_source=no,
276 AC_EGREP_CPP([yes], [#define _XOPEN_SOURCE
280 #endif], su_cv_sys_termios_needs_xopen_source=yes,
281 su_cv_sys_termios_needs_xopen_source=no))])
282 AC_MSG_RESULT([$su_cv_sys_termios_needs_xopen_source])
283 test $su_cv_sys_termios_needs_xopen_source = yes &&
284 AC_DEFINE([TERMIOS_NEEDS_XOPEN_SOURCE], [1], [FIXME])
286 AC_MSG_CHECKING([c_line in struct termios])
287 AC_CACHE_VAL([su_cv_sys_c_line_in_termios],
288 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if TERMIOS_NEEDS_XOPEN_SOURCE
289 #define _XOPEN_SOURCE
291 #include <sys/types.h>
292 #include <termios.h>]], [[struct termios t; return !sizeof t.c_line;]])],
293 [su_cv_sys_c_line_in_termios=yes],
294 [su_cv_sys_c_line_in_termios=no])])
295 AC_MSG_RESULT([$su_cv_sys_c_line_in_termios])
296 test $su_cv_sys_c_line_in_termios = yes \
297 && AC_DEFINE([HAVE_C_LINE], [1], [FIXME])
300 # FIXME: note that this macro appears above, too.
301 # I'm leaving it here for now. This whole thing needs to be modernized...
304 gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H
306 if test $gl_cv_sys_tiocgwinsz_needs_termios_h = no && \
307 test $gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h = no; then
308 AC_MSG_CHECKING([TIOCGWINSZ in sys/pty.h])
309 AC_CACHE_VAL([su_cv_sys_tiocgwinsz_in_sys_pty_h],
310 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
311 #ifdef WINSIZE_IN_PTEM
312 # include <sys/stream.h>
313 # include <sys/ptem.h>
315 #include <sys/ioctl.h>
317 #include <sys/pty.h>]], [[int x = TIOCGWINSZ;]])],
318 [su_cv_sys_tiocgwinsz_in_sys_pty_h=yes],
319 [su_cv_sys_tiocgwinsz_in_sys_pty_h=no])])
320 AC_MSG_RESULT([$su_cv_sys_tiocgwinsz_in_sys_pty_h])
322 test $su_cv_sys_tiocgwinsz_in_sys_pty_h = yes \
323 && AC_DEFINE([GWINSZ_IN_SYS_PTY], [1],
324 [Define if your system defines TIOCGWINSZ in sys/pty.h.])
328 AC_CHECK_DECLS([strsignal, sys_siglist, _sys_siglist, __sys_siglist], , ,
330 #include <signal.h>])
335 # Build df only if there's a point to it.
336 if test $gl_cv_list_mounted_fs = yes && test $gl_cv_fs_space = yes; then
337 gl_ADD_PROG([optional_bin_progs], [df])
340 # Limit stdbuf to ELF systems with GCC
341 AC_MSG_CHECKING([whether this is an ELF system])
342 AC_EGREP_CPP([yes], [#if __ELF__
344 #endif], [elf_sys=yes], [elf_sys=no])
345 AC_MSG_RESULT([$elf_sys])
346 if test "$elf_sys" = "yes" && \
347 test "$GCC" = "yes"; then
348 gl_ADD_PROG([optional_bin_progs], [stdbuf])
351 ############################################################################
352 mk="$srcdir/src/Makefile.am"
353 # Extract all literal names from the definition of $(EXTRA_PROGRAMS)
354 # in $mk but don't expand the variable references.
355 # Append each literal name to $optional_bin_progs.
357 for gl_i in `sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
358 | sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
359 | tr -s '\\015\\012\\\\' ' '`; do
360 gl_ADD_PROG([optional_bin_progs], $gl_i)
363 # As above, extract literal names from the definition of $(no_install__progs)
364 # in $mk but don't expand the variable references.
366 t=`sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
367 | sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
368 | tr -s '\\015\\012\\\\' ' '`
369 # Remove any trailing space.
370 no_install_progs_default=`echo "$t"|sed 's/ $//'`
372 # Unfortunately, due to the way autoconf's AS_HELP_STRING works, the list
373 # of default-not-installed programs, "arch hostname su", must appear in two
374 # places: in this file below, and in $mk. Using "$no_install_progs_default"
375 # below cannot work. And we can't substitute the names into $mk because
376 # automake needs the literals, too.
377 # The compromise is to ensure that the space-separated list extracted
378 # above matches the literal 2nd argument below.
379 c="$srcdir/configure.ac"
380 re='^g''l_INCLUDE_EXCLUDE_PROG(.* [\[\(.*\)\]])'
381 t=`sed -n '/'"$re"'/{s/'"$re"'/\1/;s/,/ /gp
384 $no_install_progs_default) ;;
385 *) AC_MSG_ERROR([[internal error: g'l_INCLUDE_EXCLUDE_PROG's 2nd arg, $t,
386 does not match the list of default-not-installed programs
387 ($no_install_progs_default) also recorded in $mk]],
391 # Given the name of a variable containing a space-separated list of
392 # install-by-default programs and the actual list do-not-install-by-default
393 # programs, modify the former variable to reflect any "do-install" and
394 # "don't-install" requests.
395 # I.e., add any program name specified via --enable-install-program=..., and
396 # remove any program name specified via --enable-no-install-program=...
397 # Note how the second argument below is a literal, with "," separators.
398 # That is required due to the way the macro works, and since the
399 # corresponding ./configure option argument is comma-separated on input.
400 gl_INCLUDE_EXCLUDE_PROG([optional_bin_progs], [arch,hostname,su])
402 # Now that we know which programs will actually be built up, figure out
403 # which optional helper progs should be compiled.
404 optional_pkglib_progs=
405 case " $optional_bin_progs " in
406 *' stdbuf '*) gl_ADD_PROG([optional_pkglib_progs], [libstdbuf.so]) ;;
409 # Set INSTALL_SU if su installation has been requested via
410 # --enable-install-program=su.
411 AC_SUBST([INSTALL_SU])
412 case " $optional_bin_progs " in
413 *' su '*) INSTALL_SU=yes ;;
417 MAN=`echo "$optional_bin_progs "|sed 's/ /.1 /g;s/ $//'|tr -d '\\015\\012'`
419 # Change ginstall.1 to "install.h" in $MAN.
420 MAN=`for m in $MAN; do test $m = ginstall.1 && m=install.1; echo $m; done \
421 | tr '\015\012' ' '; echo`
423 # Remove [.1, since writing a portable rule for it in man/Makefile.am
424 # is not practical. The sed LHS below uses the autoconf quadrigraph
426 MAN=`echo "$MAN"|sed 's/\@<:@\.1//'`
428 OPTIONAL_BIN_PROGS=`echo "$optional_bin_progs "|sed 's/ /\$(EXEEXT) /g;s/ $//'`
429 AC_SUBST([OPTIONAL_BIN_PROGS])
430 OPTIONAL_PKGLIB_PROGS=`echo "$optional_pkglib_progs " | sed 's/ $//'`
431 AC_SUBST([OPTIONAL_PKGLIB_PROGS])
432 NO_INSTALL_PROGS_DEFAULT=$no_install_progs_default
433 AC_SUBST([NO_INSTALL_PROGS_DEFAULT])
435 AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
437 # Arrange to rerun configure whenever the file, src/Makefile.am,
438 # containing the list of program names changes.
439 CONFIG_STATUS_DEPENDENCIES='$(top_srcdir)/src/Makefile.am'
440 AC_SUBST([CONFIG_STATUS_DEPENDENCIES])
441 ############################################################################
443 # As long as "grep 'PRI[diouxX]' po/*.pot" reports matches in
444 # translatable strings, we must use need-formatstring-macros here.
445 AM_GNU_GETTEXT([external], [need-formatstring-macros])
446 AM_GNU_GETTEXT_VERSION([0.18])
448 # For a test of uniq: it uses the $LOCALE_FR envvar.
459 gnulib-tests/Makefile