"Fossies" - the Fresh Open Source Software Archive

Member "gcal-4.1/m4/stddef_h.m4" (22 Jan 2017, 1678 Bytes) of package /linux/misc/gcal-4.1.tar.gz:


As a special service "Fossies" has tried to format the requested text file into HTML format (style: standard) with prefixed line numbers. Alternatively you can here view or download the uninterpreted source code file. See also the latest Fossies "Diffs" side-by-side code changes report for "stddef_h.m4": 4_vs_4.1.

    1 dnl A placeholder for <stddef.h>, for platforms that have issues.
    2 # stddef_h.m4 serial 5
    3 dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
    4 dnl This file is free software; the Free Software Foundation
    5 dnl gives unlimited permission to copy and/or distribute it,
    6 dnl with or without modifications, as long as this notice is preserved.
    7 
    8 AC_DEFUN([gl_STDDEF_H],
    9 [
   10   AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
   11   AC_REQUIRE([gt_TYPE_WCHAR_T])
   12   STDDEF_H=
   13   AC_CHECK_TYPE([max_align_t], [], [HAVE_MAX_ALIGN_T=0; STDDEF_H=stddef.h],
   14     [[#include <stddef.h>
   15     ]])
   16   if test $gt_cv_c_wchar_t = no; then
   17     HAVE_WCHAR_T=0
   18     STDDEF_H=stddef.h
   19   fi
   20   AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
   21     [gl_cv_decl_null_works],
   22     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
   23       int test[2 * (sizeof NULL == sizeof (void *)) -1];
   24 ]])],
   25       [gl_cv_decl_null_works=yes],
   26       [gl_cv_decl_null_works=no])])
   27   if test $gl_cv_decl_null_works = no; then
   28     REPLACE_NULL=1
   29     STDDEF_H=stddef.h
   30   fi
   31   AC_SUBST([STDDEF_H])
   32   AM_CONDITIONAL([GL_GENERATE_STDDEF_H], [test -n "$STDDEF_H"])
   33   if test -n "$STDDEF_H"; then
   34     gl_NEXT_HEADERS([stddef.h])
   35   fi
   36 ])
   37 
   38 AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
   39 [
   40   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   41   AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
   42   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
   43 ])
   44 
   45 AC_DEFUN([gl_STDDEF_H_DEFAULTS],
   46 [
   47   dnl Assume proper GNU behavior unless another module says otherwise.
   48   REPLACE_NULL=0;                AC_SUBST([REPLACE_NULL])
   49   HAVE_MAX_ALIGN_T=1;            AC_SUBST([HAVE_MAX_ALIGN_T])
   50   HAVE_WCHAR_T=1;                AC_SUBST([HAVE_WCHAR_T])
   51 ])