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-rw-r--r--gnulib-m4/extern-inline.m419
1 files changed, 17 insertions, 2 deletions
diff --git a/gnulib-m4/extern-inline.m4 b/gnulib-m4/extern-inline.m4
index 2e914dbc..8a12bddd 100644
--- a/gnulib-m4/extern-inline.m4
+++ b/gnulib-m4/extern-inline.m4
@@ -7,7 +7,22 @@ dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_EXTERN_INLINE],
[
- AH_VERBATIM([extern_inline],
+ AC_CACHE_CHECK([whether ctype.h defines __header_inline],
+ [gl_cv_have___header_inline],
+ [AC_PREPROC_IFELSE(
+ [AC_LANG_SOURCE([[#include <ctype.h>
+ #ifndef __header_inline
+ #error "<ctype.h> does not define __header_inline"
+ #endif
+ ]])],
+ [gl_cv_have___header_inline=yes],
+ [gl_cv_have___header_inline=no])])
+ if test "$gl_cv_have___header_inline" = yes; then
+ AC_DEFINE([HAVE___HEADER_INLINE], [1],
+ [Define to 1 if ctype.h defines __header_inline.])
+ fi
+
+ AH_VERBATIM([HAVE___HEADER_INLINE_1],
[/* Please see the Gnulib manual for how to use these macros.
Suppress extern inline with HP-UX cc, as it appears to be broken; see
@@ -54,7 +69,7 @@ AC_DEFUN([gl_EXTERN_INLINE],
*/
#if (((defined __APPLE__ && defined __MACH__) \
|| defined __DragonFly__ || defined __FreeBSD__) \
- && (defined __header_inline \
+ && (defined HAVE___HEADER_INLINE \
? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
&& ! defined __clang__) \
: ((! defined _DONT_USE_CTYPE_INLINE_ \