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| author | Jim Meyering <jim@meyering.net> | 2003-06-06 07:14:57 +0000 |
|---|---|---|
| committer | Jim Meyering <jim@meyering.net> | 2003-06-06 07:14:57 +0000 |
| commit | 7304b6fa17205f56be5569ee2fb3ada487160456 (patch) | |
| tree | c3f0c857c91dff4f4354f1002c5aa0e0a87a0770 /m4/stdbool.m4 | |
| parent | ad5d1a84fef90e5112002b6bba909dcfb8f9cf47 (diff) | |
| download | coreutils-7304b6fa17205f56be5569ee2fb3ada487160456.tar.xz | |
Update from gnulib.
Diffstat (limited to 'm4/stdbool.m4')
| -rw-r--r-- | m4/stdbool.m4 | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/m4/stdbool.m4 b/m4/stdbool.m4 index 14e590294..ed000c816 100644 --- a/m4/stdbool.m4 +++ b/m4/stdbool.m4 @@ -1,6 +1,6 @@ # Check for stdbool.h that conforms to C99. -# Copyright (C) 2002 Free Software Foundation, Inc. +# Copyright (C) 2002-2003 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -17,6 +17,32 @@ # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. +# Prepare for substituting <stdbool.h> if it is not supported. + +AC_DEFUN([AM_STDBOOL_H], +[ + AC_REQUIRE([AC_HEADER_STDBOOL]) + + # Define two additional variables used in the Makefile substitution. + + if test "$ac_cv_header_stdbool_h" = yes; then + STDBOOL_H='' + else + STDBOOL_H='stdbool.h' + fi + AC_SUBST([STDBOOL_H]) + + if test "$ac_cv_type__Bool" = yes; then + HAVE__BOOL=1 + else + HAVE__BOOL=0 + fi + AC_SUBST([HAVE__BOOL]) +]) + +# This macro is only needed in autoconf <= 2.54. Newer versions of autoconf +# have this macro built-in. + AC_DEFUN([AC_HEADER_STDBOOL], [AC_CACHE_CHECK([for stdbool.h that conforms to C99], [ac_cv_header_stdbool_h], @@ -57,6 +83,7 @@ AC_DEFUN([AC_HEADER_STDBOOL], [ return !a + !b + !c + !d + !e + !f + !g + !h + !i; ], [ac_cv_header_stdbool_h=yes], [ac_cv_header_stdbool_h=no])]) + AC_CHECK_TYPES([_Bool]) if test $ac_cv_header_stdbool_h = yes; then AC_DEFINE(HAVE_STDBOOL_H, 1, [Define to 1 if stdbool.h conforms to C99.]) fi]) |