Mercurial > hg > octave-lojdl > gnulib-hg
changeset 17022:23236de3f49d
extern-inline: new module
* modules/extern-inline, m4/extern-inline.m4: New files.
This is for better support of 'extern inline' a la ISO C99,
with a portable alternative on compilers that do not support
C99-style 'extern inline'. Using 'extern inline' shrinks the size
of the Emacs executable, when compiled with debugging disabled,
which is a typical way that Emacs is built while developing.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Sat, 28 Jul 2012 07:11:58 -0700 |
| parents | 37799b20257d |
| children | fc49ecfa5827 |
| files | ChangeLog m4/extern-inline.m4 modules/extern-inline |
| diffstat | 3 files changed, 70 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2012-08-01 Paul Eggert <eggert@cs.ucla.edu> + + extern-inline: new module + * modules/extern-inline, m4/extern-inline.m4: New files. + This is for better support of 'extern inline' a la ISO C99, + with a portable alternative on compilers that do not support + C99-style 'extern inline'. Using 'extern inline' shrinks the size + of the Emacs executable, when compiled with debugging disabled, + which is a typical way that Emacs is built while developing. + 2012-08-01 Akim Demaille <akim@lrde.epita.fr> maint.mk: a "release-commit" wrapper to do-release-commit-and-tag
new file mode 100644 --- /dev/null +++ b/m4/extern-inline.m4 @@ -0,0 +1,40 @@ +dnl 'extern inline' a la ISO C99. + +dnl Copyright 2012 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. + +AC_DEFUN([gl_EXTERN_INLINE], +[ + AC_REQUIRE([AC_C_INLINE]) + AH_VERBATIM([extern_inline], +[/* _GL_INLINE is a portable alternative to ISO C99 plain 'inline'. + _GL_EXTERN_INLINE is a portable alternative to 'extern linline'. + _GL_INLINE_HEADER_BEGIN contains useful stuff to put + in an include file, before uses of _GL_INLINE. + It suppresses GCC's bogus "no previous prototype for 'FOO'" diagnostic, + when FOO is an inline function in the header; see + <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113>. + _GL_INLINE_HEADER_END contains useful stuff to put + in the same include file, after uses of _GL_INLINE. */ +#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\"") +# define _GL_INLINE_HEADER_END \ + _Pragma ("GCC diagnostic pop") +# endif +#else +# define _GL_INLINE static inline +# define _GL_EXTERN_INLINE static inline +#endif + +#ifndef _GL_INLINE_HEADER_BEGIN +# define _GL_INLINE_HEADER_BEGIN +# define _GL_INLINE_HEADER_END +#endif]) +])