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author | Daiki Ueno <ueno@gnu.org> | 2013-12-17 12:16:02 +0900 |
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committer | Daiki Ueno <ueno@gnu.org> | 2013-12-20 12:59:58 +0900 |
commit | 63d53cd91d364a90018dd4152b0b1dc9f0201081 (patch) | |
tree | f2cfebda58f665b59859dc2cd847908cb2554ea4 /gettext-runtime/m4/extern-inline.m4 | |
parent | ea77f13f7e64620dbc772d3c596bd14a83517015 (diff) | |
download | gettext-63d53cd91d364a90018dd4152b0b1dc9f0201081.tar.gz |
Problem reported by Reuben Thomas in:
<https://lists.gnu.org/archive/html/bug-gettext/2013-12/msg00010.html>.
* gettext-runtime/m4/extern-inline.m4: New file, from gnulib.
* gettext-runtime/m4/intl.m4 (AM_INTL_SUBDIR): Require gl_EXTERN_INLINE.
* gettext-runtime/m4/Makefile.am (EXTRA_DIST): Update.
* gettext-tools/m4/Makefile.am (aclocal_DATA): Add extern-inline.m4.
* Makefile.am (distcheck-hook): Check extern-inline.m4.
Diffstat (limited to 'gettext-runtime/m4/extern-inline.m4')
-rw-r--r-- | gettext-runtime/m4/extern-inline.m4 | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gettext-runtime/m4/extern-inline.m4 b/gettext-runtime/m4/extern-inline.m4 new file mode 100644 index 000000000..c4c5e7f22 --- /dev/null +++ b/gettext-runtime/m4/extern-inline.m4 @@ -0,0 +1,70 @@ +dnl 'extern inline' a la ISO C99. + +dnl Copyright 2012-2013 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], +[ + AH_VERBATIM([extern_inline], +[/* 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 + <http://lists.gnu.org/archive/html/bug-texinfo/2013-02/msg00030.html>. + + Suppress extern inline with Sun C in standards-conformance mode, as it + mishandles inline functions that call each other. E.g., for 'inline void f + (void) { } inline void g (void) { f (); }', c99 incorrectly complains + 'reference to static identifier "f" in extern inline function'. + This bug was observed with Sun C 5.12 SunOS_i386 2011/11/16. + + Suppress the use of extern inline on Apple's platforms, as Libc at least + through Libc-825.26 (2013-04-09) is incompatible with it; see, e.g., + <http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00023.html>. + Perhaps Apple will fix this some day. */ +#if ((__GNUC__ \ + ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \ + : (199901L <= __STDC_VERSION__ \ + && !defined __HP_cc \ + && !(defined __SUNPRO_C && __STDC__))) \ + && !defined __APPLE__) +# define _GL_INLINE inline +# define _GL_EXTERN_INLINE extern inline +#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \ + && !defined __APPLE__) +# 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 _GL_UNUSED +# define _GL_EXTERN_INLINE static _GL_UNUSED +#endif + +#if 4 < __GNUC__ + (6 <= __GNUC_MINOR__) +# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ +# define _GL_INLINE_HEADER_CONST_PRAGMA +# else +# define _GL_INLINE_HEADER_CONST_PRAGMA \ + _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"") +# endif + /* Suppress GCC's bogus "no previous prototype for 'FOO'" + and "no previous declaration for 'FOO'" diagnostics, + when FOO is an inline function in the header; see + <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113>. */ +# 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]) +]) |