libvirt/gnulib/m4/size_max.m4
Jim Meyering 6c996bfc8f update from gnulib; use its time_r module for localtime_r on mingw
* bootstrap (modules): Add time_r.
* gnulib/m4/time_h.m4: New file.
* gnulib/m4/time_r.m4: New file.
* gnulib/lib/time_r.c: New file.
* gnulib/tests/test-time.c: New file.
* gnulib/lib/time.in.h: New file.
* gnulib/lib/Makefile.am: Update.
* gnulib/lib/fseeko.c: Likewise.
* gnulib/lib/lstat.c: Likewise.
* gnulib/lib/netdb.in.h: Likewise.
* gnulib/lib/stdint.in.h: Likewise.
* gnulib/lib/stdlib.in.h: Likewise.
* gnulib/lib/sys_select.in.h: Likewise.
* gnulib/lib/sys_stat.in.h: Likewise.
* gnulib/lib/sys_time.in.h: Likewise.
* gnulib/lib/unistd.in.h: Likewise.
* gnulib/lib/wchar.in.h: Likewise.
* gnulib/m4/codeset.m4: Likewise.
* gnulib/m4/errno_h.m4: Likewise.
* gnulib/m4/extensions.m4: Likewise.
* gnulib/m4/getaddrinfo.m4: Likewise.
* gnulib/m4/gettext.m4: Likewise.
* gnulib/m4/glibc2.m4: Likewise.
* gnulib/m4/glibc21.m4: Likewise.
* gnulib/m4/gnulib-cache.m4: Likewise.
* gnulib/m4/gnulib-comp.m4: Likewise.
* gnulib/m4/iconv.m4: Likewise.
* gnulib/m4/include_next.m4: Likewise.
* gnulib/m4/intdiv0.m4: Likewise.
* gnulib/m4/intlmacosx.m4: Likewise.
* gnulib/m4/intmax.m4: Likewise.
* gnulib/m4/inttypes-pri.m4: Likewise.
* gnulib/m4/inttypes_h.m4: Likewise.
* gnulib/m4/lcmessage.m4: Likewise.
* gnulib/m4/lib-link.m4: Likewise.
* gnulib/m4/lstat.m4: Likewise.
* gnulib/m4/netdb_h.m4: Likewise.
* gnulib/m4/nls.m4: Likewise.
* gnulib/m4/po.m4: Likewise.
* gnulib/m4/printf-posix.m4: Likewise.
* gnulib/m4/printf.m4: Likewise.
* gnulib/m4/progtest.m4: Likewise.
* gnulib/m4/size_max.m4: Likewise.
* gnulib/m4/sockets.m4: Likewise.
* gnulib/m4/stdint.m4: Likewise.
* gnulib/m4/stdint_h.m4: Likewise.
* gnulib/m4/sys_ioctl_h.m4: Likewise.
* gnulib/m4/threadlib.m4: Likewise.
* gnulib/m4/uintmax_t.m4: Likewise.
* gnulib/m4/visibility.m4: Likewise.
* gnulib/m4/wchar.m4: Likewise.
* gnulib/m4/wchar_t.m4: Likewise.
* gnulib/m4/wint_t.m4: Likewise.
* gnulib/m4/xsize.m4: Likewise.
* gnulib/tests/Makefile.am: Likewise.
* gnulib/tests/sockets.h: Likewise.
* gnulib/tests/.cvsignore: Likewise.
* gnulib/tests/.gitignore: Likewise.
* tests/.gitignore: Likewise.
* docs/examples/.gitignore: Likewise.
* gnulib/lib/.cvsignore: Likewise.
* gnulib/lib/.gitignore: Likewise.

remove files associated with obsolete strpbrk module
* gnulib/lib/strpbrk.c: Remove file.
* gnulib/m4/strpbrk.m4: Remove file.
2009-01-06 20:12:50 +00:00

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# size_max.m4 serial 7
dnl Copyright (C) 2003, 2005-2006, 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
AC_DEFUN([gl_SIZE_MAX],
[
AC_CHECK_HEADERS([stdint.h])
dnl First test whether the system already has SIZE_MAX.
AC_MSG_CHECKING([for SIZE_MAX])
AC_CACHE_VAL([gl_cv_size_max], [
gl_cv_size_max=
AC_EGREP_CPP([Found it], [
#include <limits.h>
#if HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef SIZE_MAX
Found it
#endif
], [gl_cv_size_max=yes])
if test -z "$gl_cv_size_max"; then
dnl Define it ourselves. Here we assume that the type 'size_t' is not wider
dnl than the type 'unsigned long'. Try hard to find a definition that can
dnl be used in a preprocessor #if, i.e. doesn't contain a cast.
AC_COMPUTE_INT([size_t_bits_minus_1], [sizeof (size_t) * CHAR_BIT - 1],
[#include <stddef.h>
#include <limits.h>], [size_t_bits_minus_1=])
AC_COMPUTE_INT([fits_in_uint], [sizeof (size_t) <= sizeof (unsigned int)],
[#include <stddef.h>], [fits_in_uint=])
if test -n "$size_t_bits_minus_1" && test -n "$fits_in_uint"; then
if test $fits_in_uint = 1; then
dnl Even though SIZE_MAX fits in an unsigned int, it must be of type
dnl 'unsigned long' if the type 'size_t' is the same as 'unsigned long'.
AC_TRY_COMPILE([#include <stddef.h>
extern size_t foo;
extern unsigned long foo;
], [], [fits_in_uint=0])
fi
dnl We cannot use 'expr' to simplify this expression, because 'expr'
dnl works only with 'long' integers in the host environment, while we
dnl might be cross-compiling from a 32-bit platform to a 64-bit platform.
if test $fits_in_uint = 1; then
gl_cv_size_max="(((1U << $size_t_bits_minus_1) - 1) * 2 + 1)"
else
gl_cv_size_max="(((1UL << $size_t_bits_minus_1) - 1) * 2 + 1)"
fi
else
dnl Shouldn't happen, but who knows...
gl_cv_size_max='((size_t)~(size_t)0)'
fi
fi
])
AC_MSG_RESULT([$gl_cv_size_max])
if test "$gl_cv_size_max" != yes; then
AC_DEFINE_UNQUOTED([SIZE_MAX], [$gl_cv_size_max],
[Define as the maximum value of type 'size_t', if the system doesn't define it.])
fi
])
dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
dnl Remove this when we can assume autoconf >= 2.61.
m4_ifdef([AC_COMPUTE_INT], [], [
AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
])