Mercurial > gnulib
changeset 17056:373b50f0c218
extern-inline: support old GCC 'inline'
* m4/extern-inline.m4 (gl_EXTERN_INLINE): Use pre-C99 GCC 'inline'
if available. This applies to GCC versions 2.7 through 4.2, or
when newer GCC is using -fgnu89-inline. The goal is to address
some of the performance issues mentioned by Bruno Haible in
<http://lists.gnu.org/archive/html/bug-gnulib/2012-08/msg00097.html>.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Mon, 20 Aug 2012 17:01:18 -0700 |
| parents | 672cf835d212 |
| children | a9db8a0359df |
| files | ChangeLog m4/extern-inline.m4 |
| diffstat | 2 files changed, 31 insertions(+), 8 deletions(-) [+] |
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line diff
--- a/ChangeLog Mon Aug 20 09:38:54 2012 -0600 +++ b/ChangeLog Mon Aug 20 17:01:18 2012 -0700 @@ -1,3 +1,12 @@ +2012-08-20 Paul Eggert <eggert@cs.ucla.edu> + + extern-inline: support old GCC 'inline' + * m4/extern-inline.m4 (gl_EXTERN_INLINE): Use pre-C99 GCC 'inline' + if available. This applies to GCC versions 2.7 through 4.2, or + when newer GCC is using -fgnu89-inline. The goal is to address + some of the performance issues mentioned by Bruno Haible in + <http://lists.gnu.org/archive/html/bug-gnulib/2012-08/msg00097.html>. + 2012-08-20 Eric Blake <eblake@redhat.com> maint.mk: avoid redundant file name in message
--- a/m4/extern-inline.m4 Mon Aug 20 09:38:54 2012 -0600 +++ b/m4/extern-inline.m4 Mon Aug 20 17:01:18 2012 -0700 @@ -21,20 +21,34 @@ #if __GNUC__ ? __GNUC_STDC_INLINE__ : 199901L <= __STDC_VERSION__ # define _GL_INLINE inline # define _GL_EXTERN_INLINE extern inline -# if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__ -# define _GL_INLINE_HEADER_BEGIN \ - _Pragma ("GCC diagnostic push") \ - _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \ - _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") -# define _GL_INLINE_HEADER_END \ - _Pragma ("GCC diagnostic pop") +#elif 2 < __GNUC__ + (7 <= __GNUC_MINOR__) +# if __GNUC_GNU_INLINE__ + /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */ +# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__)) +# else +# define _GL_INLINE extern inline # endif +# define _GL_EXTERN_INLINE extern #else # define _GL_INLINE static inline # define _GL_EXTERN_INLINE static inline #endif -#ifndef _GL_INLINE_HEADER_BEGIN +#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__) +# if __GNUC_STDC_INLINE__ +# define _GL_INLINE_HEADER_CONST_PRAGMA +# else +# define _GL_INLINE_HEADER_CONST_PRAGMA \ + _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"") +# endif +# define _GL_INLINE_HEADER_BEGIN \ + _Pragma ("GCC diagnostic push") \ + _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \ + _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \ + _GL_INLINE_HEADER_CONST_PRAGMA +# define _GL_INLINE_HEADER_END \ + _Pragma ("GCC diagnostic pop") +#else # define _GL_INLINE_HEADER_BEGIN # define _GL_INLINE_HEADER_END #endif])