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ad756440fb
* configure.ac (WARN_CFLAGS): Don't turn off -Wstrict-overflow. (GNULIB_WARN_CFLAGS): Remove -Wstrict-overflow from the list of warning options used in lib/. Normally I find that -Wstrict-overflow produces too many false positives, but considering that it warns of the bug reported in http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498, I now think it is worthwhile. The lesser of two evils. Thanks to Daniel Veillard for showing me the gcc bug report.
465 lines
16 KiB
Plaintext
465 lines
16 KiB
Plaintext
# -*- autoconf -*-
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# Process this file with autoconf to produce a configure script.
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# Copyright (C) 1991, 1993-2011 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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dnl Written by Jim Meyering.
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AC_PREREQ([2.62])
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# Make inter-release version strings look like, e.g., v6.9-219-g58ddd, which
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# indicates that it is built from the 219th delta (in _some_ repository)
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# following the v6.9 tag, and that 58ddd is a prefix of the commit SHA1.
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AC_INIT([GNU coreutils],
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m4_esyscmd([build-aux/git-version-gen .tarball-version]),
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[bug-coreutils@gnu.org])
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AC_CONFIG_SRCDIR([src/ls.c])
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AC_CONFIG_AUX_DIR([build-aux])
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AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
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AM_INIT_AUTOMAKE([1.11.1 dist-xz color-tests parallel-tests])
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AM_SILENT_RULES([yes]) # make --enable-silent-rules the default.
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AC_PROG_CC_STDC
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AM_PROG_CC_C_O
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AC_PROG_CPP
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AC_PROG_GCC_TRADITIONAL
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AC_PROG_RANLIB
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AC_PROG_LN_S
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gl_EARLY
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gl_INIT
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coreutils_MACROS
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AC_ARG_ENABLE([gcc-warnings],
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[AS_HELP_STRING([--enable-gcc-warnings],
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[turn on lots of GCC warnings (for developers)])],
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[case $enableval in
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yes|no) ;;
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*) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
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esac
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gl_gcc_warnings=$enableval],
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[gl_gcc_warnings=no]
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)
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if test "$gl_gcc_warnings" = yes; then
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gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
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AC_SUBST([WERROR_CFLAGS])
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nw=
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# This, $nw, is the list of warnings we disable.
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nw="$nw -Wdeclaration-after-statement" # too useful to forbid
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nw="$nw -Waggregate-return" # anachronistic
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nw="$nw -Wlong-long" # C90 is anachronistic (lib/gethrxtime.h)
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nw="$nw -Wc++-compat" # We don't care about C++ compilers
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nw="$nw -Wundef" # Warns on '#if GNULIB_FOO' etc in gnulib
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nw="$nw -Wtraditional" # Warns on #elif which we use often
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nw="$nw -Wcast-qual" # Too many warnings for now
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nw="$nw -Wconversion" # Too many warnings for now
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nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
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nw="$nw -Wsign-conversion" # Too many warnings for now
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nw="$nw -Wtraditional-conversion" # Too many warnings for now
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nw="$nw -Wunreachable-code" # Too many warnings for now
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nw="$nw -Wpadded" # Our structs are not padded
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nw="$nw -Wredundant-decls" # openat.h declares e.g., mkdirat
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nw="$nw -Wlogical-op" # any use of fwrite provokes this
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nw="$nw -Wformat-nonliteral" # who.c and pinky.c strftime uses
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nw="$nw -Wvla" # warnings in gettext.h
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nw="$nw -Wnested-externs" # use of XARGMATCH/verify_function__
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nw="$nw -Wswitch-enum" # Too many warnings for now
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nw="$nw -Wswitch-default" # Too many warnings for now
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nw="$nw -Wstack-protector" # not worth working around
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# things I might fix soon:
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nw="$nw -Wfloat-equal" # sort.c, seq.c
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nw="$nw -Wmissing-format-attribute" # copy.c
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nw="$nw -Wunsafe-loop-optimizations" # a few src/*.c
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nw="$nw -Winline" # system.h's readdir_ignoring_dot_and_dotdot
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# Using -Wstrict-overflow is a pain, but the alternative is worse.
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# For an example, see the code that provoked this report:
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# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498
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# Code like that still infloops with gcc-4.6.0 and -O2. Scary indeed.
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gl_MANYWARN_ALL_GCC([ws])
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gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
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for w in $ws; do
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gl_WARN_ADD([$w])
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done
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gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
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gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
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# In spite of excluding -Wlogical-op above, it is enabled, as of
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# gcc 4.5.0 20090517, and it provokes warnings in cat.c, dd.c, truncate.c
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gl_WARN_ADD([-Wno-logical-op])
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gl_WARN_ADD([-fdiagnostics-show-option])
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gl_WARN_ADD([-funit-at-a-time])
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AC_SUBST([WARN_CFLAGS])
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AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
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AC_DEFINE([_FORTIFY_SOURCE], [2],
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[enable compile-time and run-time bounds-checking, and some warnings])
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AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
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# We use a slightly smaller set of warning options for lib/.
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# Remove the following and save the result in GNULIB_WARN_CFLAGS.
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nw=
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nw="$nw -Wstrict-overflow"
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nw="$nw -Wuninitialized"
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nw="$nw -Wunused-macros"
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nw="$nw -Wmissing-prototypes"
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nw="$nw -Wold-style-definition"
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gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
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AC_SUBST([GNULIB_WARN_CFLAGS])
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# For gnulib-tests, the set is slightly smaller still.
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nw=
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nw="$nw -Wstrict-prototypes"
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gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
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[$GNULIB_WARN_CFLAGS], [$nw])
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AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
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fi
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AC_FUNC_FORK
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optional_bin_progs=
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AC_CHECK_FUNCS([chroot],
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gl_ADD_PROG([optional_bin_progs], [chroot]))
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AC_CHECK_FUNCS([gethostid],
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gl_ADD_PROG([optional_bin_progs], [hostid]))
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gl_WINSIZE_IN_PTEM
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AC_MSG_CHECKING([whether localtime caches TZ])
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AC_CACHE_VAL([utils_cv_localtime_cache],
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[if test x$ac_cv_func_tzset = xyes; then
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AC_RUN_IFELSE([AC_LANG_SOURCE([[#include <time.h>
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#if STDC_HEADERS
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# include <stdlib.h>
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#endif
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extern char **environ;
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void unset_TZ (void)
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{
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char **from, **to;
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for (to = from = environ; (*to = *from); from++)
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if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
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to++;
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}
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int main()
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{
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time_t now = time ((time_t *) 0);
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int hour_GMT0, hour_unset;
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if (putenv ("TZ=GMT0") != 0)
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return 1;
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hour_GMT0 = localtime (&now)->tm_hour;
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unset_TZ ();
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hour_unset = localtime (&now)->tm_hour;
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if (putenv ("TZ=PST8") != 0)
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return 1;
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if (localtime (&now)->tm_hour == hour_GMT0)
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return 1;
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unset_TZ ();
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if (localtime (&now)->tm_hour != hour_unset)
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return 1;
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return 0;
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}]])],
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[utils_cv_localtime_cache=no],
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[utils_cv_localtime_cache=yes],
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[# If we have tzset, assume the worst when cross-compiling.
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utils_cv_localtime_cache=yes])
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else
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# If we lack tzset, report that localtime does not cache TZ,
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# since we can't invalidate the cache if we don't have tzset.
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utils_cv_localtime_cache=no
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fi])dnl
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AC_MSG_RESULT([$utils_cv_localtime_cache])
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if test $utils_cv_localtime_cache = yes; then
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AC_DEFINE([LOCALTIME_CACHE], [1], [FIXME])
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fi
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# SCO-ODT-3.0 is reported to need -los to link programs using initgroups
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AC_CHECK_FUNCS([initgroups])
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if test $ac_cv_func_initgroups = no; then
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AC_CHECK_LIB([os], [initgroups])
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fi
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AC_CHECK_FUNCS([syslog])
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if test $ac_cv_func_syslog = no; then
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# syslog is not in the default libraries. See if it's in some other.
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for lib in bsd socket inet; do
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AC_CHECK_LIB([$lib], [syslog], [AC_DEFINE([HAVE_SYSLOG], [1], [FIXME])
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LIBS="$LIBS -l$lib"; break])
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done
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fi
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AC_CACHE_CHECK([for 3-argument setpriority function],
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[utils_cv_func_setpriority],
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <sys/time.h>
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#include <sys/resource.h>
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]],
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[[setpriority (0, 0, 0);]])],
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[utils_cv_func_setpriority=yes],
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[utils_cv_func_setpriority=no])])
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if test $utils_cv_func_setpriority = no; then
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AC_CHECK_FUNCS([nice])
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fi
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case $utils_cv_func_setpriority,$ac_cv_func_nice in
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*yes*)
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gl_ADD_PROG([optional_bin_progs], [nice])
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esac
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AC_DEFUN([coreutils_DUMMY_1],
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[
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AC_REQUIRE([gl_READUTMP])
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if test $ac_cv_header_utmp_h = yes || test $ac_cv_header_utmpx_h = yes; then
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gl_ADD_PROG([optional_bin_progs], [who])
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gl_ADD_PROG([optional_bin_progs], [users])
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gl_ADD_PROG([optional_bin_progs], [pinky])
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fi
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])
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coreutils_DUMMY_1
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AC_MSG_CHECKING([ut_host in struct utmp])
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AC_CACHE_VAL([su_cv_func_ut_host_in_utmp],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
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#include <utmp.h>]], [[struct utmp ut; return !sizeof ut.ut_host;]])],
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[su_cv_func_ut_host_in_utmp=yes],
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[su_cv_func_ut_host_in_utmp=no])])
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AC_MSG_RESULT([$su_cv_func_ut_host_in_utmp])
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if test $su_cv_func_ut_host_in_utmp = yes; then
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have_ut_host=1
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AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
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fi
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if test -z "$have_ut_host"; then
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AC_MSG_CHECKING([ut_host in struct utmpx])
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AC_CACHE_VAL([su_cv_func_ut_host_in_utmpx],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
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#include <utmpx.h>]], [[struct utmpx ut; return !sizeof ut.ut_host;]])],
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[su_cv_func_ut_host_in_utmpx=yes],
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[su_cv_func_ut_host_in_utmpx=no])])
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AC_MSG_RESULT([$su_cv_func_ut_host_in_utmpx])
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if test $su_cv_func_ut_host_in_utmpx = yes; then
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AC_DEFINE([HAVE_UTMPX_H], [1], [FIXME])
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AC_DEFINE([HAVE_UT_HOST], [1], [FIXME])
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fi
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fi
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GNULIB_BOOT_TIME([gl_ADD_PROG([optional_bin_progs], [uptime])])
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AC_SYS_POSIX_TERMIOS()
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gl_HEADER_TIOCGWINSZ_NEEDS_SYS_IOCTL
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if test $ac_cv_sys_posix_termios = yes; then
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gl_ADD_PROG([optional_bin_progs], [stty])
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AC_MSG_CHECKING([whether termios.h needs _XOPEN_SOURCE])
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AC_CACHE_VAL([su_cv_sys_termios_needs_xopen_source],
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[AC_EGREP_CPP([yes], [#include <termios.h>
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#ifdef IUCLC
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yes
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#endif], su_cv_sys_termios_needs_xopen_source=no,
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AC_EGREP_CPP([yes], [#define _XOPEN_SOURCE
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#include <termios.h>
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#ifdef IUCLC
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yes
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#endif], su_cv_sys_termios_needs_xopen_source=yes,
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su_cv_sys_termios_needs_xopen_source=no))])
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AC_MSG_RESULT([$su_cv_sys_termios_needs_xopen_source])
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test $su_cv_sys_termios_needs_xopen_source = yes &&
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AC_DEFINE([TERMIOS_NEEDS_XOPEN_SOURCE], [1], [FIXME])
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AC_MSG_CHECKING([c_line in struct termios])
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AC_CACHE_VAL([su_cv_sys_c_line_in_termios],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if TERMIOS_NEEDS_XOPEN_SOURCE
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#define _XOPEN_SOURCE
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#endif
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#include <sys/types.h>
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#include <termios.h>]], [[struct termios t; return !sizeof t.c_line;]])],
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[su_cv_sys_c_line_in_termios=yes],
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[su_cv_sys_c_line_in_termios=no])])
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AC_MSG_RESULT([$su_cv_sys_c_line_in_termios])
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test $su_cv_sys_c_line_in_termios = yes \
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&& AC_DEFINE([HAVE_C_LINE], [1], [FIXME])
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fi
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# FIXME: note that this macro appears above, too.
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# I'm leaving it here for now. This whole thing needs to be modernized...
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gl_WINSIZE_IN_PTEM
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gl_HEADER_TIOCGWINSZ_IN_TERMIOS_H
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if test $gl_cv_sys_tiocgwinsz_needs_termios_h = no && \
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test $gl_cv_sys_tiocgwinsz_needs_sys_ioctl_h = no; then
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AC_MSG_CHECKING([TIOCGWINSZ in sys/pty.h])
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AC_CACHE_VAL([su_cv_sys_tiocgwinsz_in_sys_pty_h],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
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#ifdef WINSIZE_IN_PTEM
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# include <sys/stream.h>
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# include <sys/ptem.h>
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#endif
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/pty.h>]], [[int x = TIOCGWINSZ;]])],
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[su_cv_sys_tiocgwinsz_in_sys_pty_h=yes],
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[su_cv_sys_tiocgwinsz_in_sys_pty_h=no])])
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AC_MSG_RESULT([$su_cv_sys_tiocgwinsz_in_sys_pty_h])
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test $su_cv_sys_tiocgwinsz_in_sys_pty_h = yes \
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&& AC_DEFINE([GWINSZ_IN_SYS_PTY], [1],
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[Define if your system defines TIOCGWINSZ in sys/pty.h.])
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fi
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# For src/kill.c.
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AC_CHECK_DECLS([strsignal, sys_siglist, _sys_siglist, __sys_siglist], , ,
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[AC_INCLUDES_DEFAULT
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#include <signal.h>])
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cu_LIB_CHECK
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cu_GMP
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# Build df only if there's a point to it.
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if test $gl_cv_list_mounted_fs = yes && test $gl_cv_fs_space = yes; then
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gl_ADD_PROG([optional_bin_progs], [df])
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fi
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# Limit stdbuf to ELF systems with GCC
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AC_MSG_CHECKING([whether this is an ELF system])
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AC_EGREP_CPP([yes], [#if __ELF__
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yes
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#endif], [elf_sys=yes], [elf_sys=no])
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AC_MSG_RESULT([$elf_sys])
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if test "$elf_sys" = "yes" && \
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test "$GCC" = "yes"; then
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gl_ADD_PROG([optional_bin_progs], [stdbuf])
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fi
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############################################################################
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mk="$srcdir/src/Makefile.am"
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# Extract all literal names from the definition of $(EXTRA_PROGRAMS)
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# in $mk but don't expand the variable references.
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# Append each literal name to $optional_bin_progs.
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v=EXTRA_PROGRAMS
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for gl_i in `sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
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| sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
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| tr -s '\\015\\012\\\\' ' '`; do
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gl_ADD_PROG([optional_bin_progs], $gl_i)
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done
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# As above, extract literal names from the definition of $(no_install__progs)
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# in $mk but don't expand the variable references.
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v=no_install__progs
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t=`sed -n '/^'$v' =/,/[[^\]]$/p' $mk \
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| sed 's/^ *//;/^\$.*/d;/^'$v' =/d' \
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| tr -s '\\015\\012\\\\' ' '`
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# Remove any trailing space.
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no_install_progs_default=`echo "$t"|sed 's/ $//'`
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# Unfortunately, due to the way autoconf's AS_HELP_STRING works, the list
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# of default-not-installed programs, "arch hostname su", must appear in two
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# places: in this file below, and in $mk. Using "$no_install_progs_default"
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# below cannot work. And we can't substitute the names into $mk because
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# automake needs the literals, too.
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# The compromise is to ensure that the space-separated list extracted
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# above matches the literal 2nd argument below.
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c="$srcdir/configure.ac"
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re='^g''l_INCLUDE_EXCLUDE_PROG(.* [\[\(.*\)\]])'
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t=`sed -n '/'"$re"'/{s/'"$re"'/\1/;s/,/ /gp
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}' $c`
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case $t in
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$no_install_progs_default) ;;
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*) AC_MSG_ERROR([[internal error: g'l_INCLUDE_EXCLUDE_PROG's 2nd arg, $t,
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does not match the list of default-not-installed programs
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($no_install_progs_default) also recorded in $mk]],
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1) ;;
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esac
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# Given the name of a variable containing a space-separated list of
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# install-by-default programs and the actual list do-not-install-by-default
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# programs, modify the former variable to reflect any "do-install" and
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# "don't-install" requests.
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# I.e., add any program name specified via --enable-install-program=..., and
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# remove any program name specified via --enable-no-install-program=...
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# Note how the second argument below is a literal, with "," separators.
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# That is required due to the way the macro works, and since the
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# corresponding ./configure option argument is comma-separated on input.
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gl_INCLUDE_EXCLUDE_PROG([optional_bin_progs], [arch,hostname,su])
|
|
|
|
# Now that we know which programs will actually be built up, figure out
|
|
# which optional helper progs should be compiled.
|
|
optional_pkglib_progs=
|
|
case " $optional_bin_progs " in
|
|
*' stdbuf '*) gl_ADD_PROG([optional_pkglib_progs], [libstdbuf.so]) ;;
|
|
esac
|
|
|
|
# Set INSTALL_SU if su installation has been requested via
|
|
# --enable-install-program=su.
|
|
AC_SUBST([INSTALL_SU])
|
|
case " $optional_bin_progs " in
|
|
*' su '*) INSTALL_SU=yes ;;
|
|
*) INSTALL_SU=no ;;
|
|
esac
|
|
|
|
MAN=`echo "$optional_bin_progs "|sed 's/ /.1 /g;s/ $//'|tr -d '\\015\\012'`
|
|
|
|
# Change ginstall.1 to "install.h" in $MAN.
|
|
MAN=`for m in $MAN; do test $m = ginstall.1 && m=install.1; echo $m; done \
|
|
| tr '\015\012' ' '; echo`
|
|
|
|
# Remove [.1, since writing a portable rule for it in man/Makefile.am
|
|
# is not practical. The sed LHS below uses the autoconf quadrigraph
|
|
# representing '['.
|
|
MAN=`echo "$MAN"|sed 's/\@<:@\.1//'`
|
|
|
|
OPTIONAL_BIN_PROGS=`echo "$optional_bin_progs "|sed 's/ /\$(EXEEXT) /g;s/ $//'`
|
|
AC_SUBST([OPTIONAL_BIN_PROGS])
|
|
OPTIONAL_PKGLIB_PROGS=`echo "$optional_pkglib_progs " | sed 's/ $//'`
|
|
AC_SUBST([OPTIONAL_PKGLIB_PROGS])
|
|
NO_INSTALL_PROGS_DEFAULT=$no_install_progs_default
|
|
AC_SUBST([NO_INSTALL_PROGS_DEFAULT])
|
|
|
|
AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
|
|
|
|
# Arrange to rerun configure whenever the file, src/Makefile.am,
|
|
# containing the list of program names changes.
|
|
CONFIG_STATUS_DEPENDENCIES='$(top_srcdir)/src/Makefile.am'
|
|
AC_SUBST([CONFIG_STATUS_DEPENDENCIES])
|
|
############################################################################
|
|
|
|
# As long as "grep 'PRI[diouxX]' po/*.pot" reports matches in
|
|
# translatable strings, we must use need-formatstring-macros here.
|
|
AM_GNU_GETTEXT([external], [need-formatstring-macros])
|
|
AM_GNU_GETTEXT_VERSION([0.17])
|
|
|
|
# For a test of uniq: it uses the $LOCALE_FR envvar.
|
|
gt_LOCALE_FR
|
|
|
|
AC_CONFIG_FILES(
|
|
Makefile
|
|
doc/Makefile
|
|
lib/Makefile
|
|
man/Makefile
|
|
po/Makefile.in
|
|
src/Makefile
|
|
tests/Makefile
|
|
gnulib-tests/Makefile
|
|
)
|
|
AC_OUTPUT
|