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Diffstat (limited to 'pcp/m4/size_max.m4')
| -rw-r--r-- | pcp/m4/size_max.m4 | 79 | 
1 files changed, 0 insertions, 79 deletions
| diff --git a/pcp/m4/size_max.m4 b/pcp/m4/size_max.m4 deleted file mode 100644 index 4b247ab..0000000 --- a/pcp/m4/size_max.m4 +++ /dev/null @@ -1,79 +0,0 @@ -# size_max.m4 serial 10 -dnl Copyright (C) 2003, 2005-2006, 2008-2013 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_CACHE_CHECK([for SIZE_MAX], [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_COMPILE_IFELSE( -            [AC_LANG_PROGRAM( -               [[#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 << $size_t_bits_minus_1) - 1) * 2 + 1)" -        fi -      else -        dnl Shouldn't happen, but who knows... -        gl_cv_size_max='((size_t)~(size_t)0)' -      fi -    fi -  ]) -  if test "$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 Don't redefine SIZE_MAX in config.h if config.h is re-included after -  dnl <stdint.h>. Remember that the #undef in AH_VERBATIM gets replaced with -  dnl #define by AC_DEFINE_UNQUOTED. -  AH_VERBATIM([SIZE_MAX], -[/* Define as the maximum value of type 'size_t', if the system doesn't define -   it. */ -#ifndef SIZE_MAX -# undef SIZE_MAX -#endif]) -]) - -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])]) -]) | 
