f8cdaf0c12
* lib/Makefile.am lib/alloca.in.h lib/argp-ba.c lib/argp-eexst.c lib/argp-fmtstream.c lib/argp-fmtstream.h lib/argp-fs-xinl.c lib/argp-help.c lib/argp-namefrob.h lib/argp-parse.c lib/argp-pin.c lib/argp-pv.c lib/argp-pvh.c lib/argp-xinl.c lib/argp.h lib/asnprintf.c lib/basename-lgpl.c lib/dirname-lgpl.c lib/dirname.h lib/dosname.h lib/errno.in.h lib/error.c lib/error.h lib/fcntl.in.h lib/float+.h lib/float.c lib/float.in.h lib/gethrxtime.c lib/gethrxtime.h lib/getopt.c lib/getopt.in.h lib/getopt1.c lib/getopt_int.h lib/gettext.h lib/gettime.c lib/gettimeofday.c lib/intprops.h lib/itold.c lib/lstat.c lib/malloc.c lib/memchr.c lib/mempcpy.c lib/mkstemp.c lib/msvc-inval.c lib/msvc-inval.h lib/msvc-nothrow.c lib/msvc-nothrow.h lib/pathmax.h lib/printf-args.c lib/printf-args.h lib/printf-parse.c lib/printf-parse.h lib/progname.c lib/progname.h lib/rawmemchr.c lib/size_max.h lib/sleep.c lib/stat.c lib/stdalign.in.h lib/stdbool.in.h lib/stddef.in.h lib/stdint.in.h lib/stdio.in.h lib/stdlib.in.h lib/strcasecmp.c lib/strchrnul.c lib/strerror-override.c lib/strerror-override.h lib/strerror.c lib/string.in.h lib/strings.in.h lib/stripslash.c lib/strncasecmp.c lib/strndup.c lib/strnlen.c lib/sys_stat.in.h lib/sys_time.in.h lib/sys_types.in.h lib/sys_wait.in.h lib/sysexits.in.h lib/tempname.c lib/tempname.h lib/time.in.h lib/timespec.h lib/unistd.in.h lib/vasnprintf.c lib/vasnprintf.h lib/verify.h lib/vsnprintf.c lib/wchar.in.h lib/xsize.h lib/xtime.h m4/00gnulib.m4 m4/alloca.m4 m4/argp.m4 m4/clock_time.m4 m4/dirname.m4 m4/double-slash-root.m4 m4/errno_h.m4 m4/error.m4 m4/exponentd.m4 m4/extensions.m4 m4/extern-inline.m4 m4/fcntl-o.m4 m4/fcntl_h.m4 m4/float_h.m4 m4/gethrxtime.m4 m4/getopt.m4 m4/gettime.m4 m4/gettimeofday.m4 m4/gnulib-cache.m4 m4/gnulib-common.m4 m4/gnulib-comp.m4 m4/gnulib-tool.m4 m4/include_next.m4 m4/intmax_t.m4 m4/inttypes_h.m4 m4/largefile.m4 m4/longlong.m4 m4/lstat.m4 m4/malloc.m4 m4/math_h.m4 m4/memchr.m4 m4/mempcpy.m4 m4/mkstemp.m4 m4/mmap-anon.m4 m4/msvc-inval.m4 m4/msvc-nothrow.m4 m4/multiarch.m4 m4/nocrash.m4 m4/off_t.m4 m4/pathmax.m4 m4/printf.m4 m4/rawmemchr.m4 m4/size_max.m4 m4/sleep.m4 m4/ssize_t.m4 m4/stat.m4 m4/stdalign.m4 m4/stdbool.m4 m4/stddef_h.m4 m4/stdint.m4 m4/stdint_h.m4 m4/stdio_h.m4 m4/stdlib_h.m4 m4/strcase.m4 m4/strchrnul.m4 m4/strerror.m4 m4/string_h.m4 m4/strings_h.m4 m4/strndup.m4 m4/strnlen.m4 m4/sys_socket_h.m4 m4/sys_stat_h.m4 m4/sys_time_h.m4 m4/sys_types_h.m4 m4/sys_wait_h.m4 m4/sysexits.m4 m4/tempname.m4 m4/time_h.m4 m4/timespec.m4 m4/unistd_h.m4 m4/vasnprintf.m4 m4/vsnprintf.m4 m4/warn-on-use.m4 m4/wchar_h.m4 m4/wchar_t.m4 m4/wint_t.m4 m4/xsize.m4 tools/snippet/arg-nonnull.h tools/snippet/c++defs.h tools/snippet/warn-on-use.h: Upgrade to gnulib 9ceceed274f83094127f9ff0bf061293c9fe1e7f. * m4/secure_getenv.m4, lib/secure_getenv.c, lib/unistd.c, lib/xtime.c: New files. * src/bin/Makefile.am: Link with the libtool library.
79 lines
3 KiB
Text
79 lines
3 KiB
Text
# size_max.m4 serial 10
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dnl Copyright (C) 2003, 2005-2006, 2008-2013 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl From Bruno Haible.
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AC_DEFUN([gl_SIZE_MAX],
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[
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AC_CHECK_HEADERS([stdint.h])
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dnl First test whether the system already has SIZE_MAX.
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AC_CACHE_CHECK([for SIZE_MAX], [gl_cv_size_max], [
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gl_cv_size_max=
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AC_EGREP_CPP([Found it], [
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#include <limits.h>
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#if HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#ifdef SIZE_MAX
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Found it
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#endif
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], [gl_cv_size_max=yes])
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if test -z "$gl_cv_size_max"; then
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dnl Define it ourselves. Here we assume that the type 'size_t' is not wider
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dnl than the type 'unsigned long'. Try hard to find a definition that can
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dnl be used in a preprocessor #if, i.e. doesn't contain a cast.
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AC_COMPUTE_INT([size_t_bits_minus_1], [sizeof (size_t) * CHAR_BIT - 1],
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[#include <stddef.h>
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#include <limits.h>], [size_t_bits_minus_1=])
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AC_COMPUTE_INT([fits_in_uint], [sizeof (size_t) <= sizeof (unsigned int)],
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[#include <stddef.h>], [fits_in_uint=])
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if test -n "$size_t_bits_minus_1" && test -n "$fits_in_uint"; then
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if test $fits_in_uint = 1; then
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dnl Even though SIZE_MAX fits in an unsigned int, it must be of type
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dnl 'unsigned long' if the type 'size_t' is the same as 'unsigned long'.
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <stddef.h>
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extern size_t foo;
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extern unsigned long foo;
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]],
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[[]])],
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[fits_in_uint=0])
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fi
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dnl We cannot use 'expr' to simplify this expression, because 'expr'
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dnl works only with 'long' integers in the host environment, while we
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dnl might be cross-compiling from a 32-bit platform to a 64-bit platform.
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if test $fits_in_uint = 1; then
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gl_cv_size_max="(((1U << $size_t_bits_minus_1) - 1) * 2 + 1)"
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else
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gl_cv_size_max="(((1UL << $size_t_bits_minus_1) - 1) * 2 + 1)"
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fi
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else
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dnl Shouldn't happen, but who knows...
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gl_cv_size_max='((size_t)~(size_t)0)'
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fi
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fi
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])
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if test "$gl_cv_size_max" != yes; then
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AC_DEFINE_UNQUOTED([SIZE_MAX], [$gl_cv_size_max],
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[Define as the maximum value of type 'size_t', if the system doesn't define it.])
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fi
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dnl Don't redefine SIZE_MAX in config.h if config.h is re-included after
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dnl <stdint.h>. Remember that the #undef in AH_VERBATIM gets replaced with
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dnl #define by AC_DEFINE_UNQUOTED.
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AH_VERBATIM([SIZE_MAX],
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[/* Define as the maximum value of type 'size_t', if the system doesn't define
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it. */
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#ifndef SIZE_MAX
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# undef SIZE_MAX
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#endif])
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])
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dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
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dnl Remove this when we can assume autoconf >= 2.61.
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m4_ifdef([AC_COMPUTE_INT], [], [
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AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
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])
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