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| author | Arnold D. Robbins <arnold@skeeve.com> | 2012-03-30 14:28:10 +0300 |
|---|---|---|
| committer | Arnold D. Robbins <arnold@skeeve.com> | 2012-03-30 14:28:10 +0300 |
| commit | abde9f31440e862d4fd51605d8fade099b602cb5 (patch) | |
| tree | 5cc4aaae46d8b2f76e994e4563a962eb3846c001 /configure.ac | |
| parent | 19a22c41661c3b032c9cdcfd6913373526c025c8 (diff) | |
| download | egawk-abde9f31440e862d4fd51605d8fade099b602cb5.tar.gz egawk-abde9f31440e862d4fd51605d8fade099b602cb5.tar.bz2 egawk-abde9f31440e862d4fd51605d8fade099b602cb5.zip | |
Move _Noreturn handlng into a separate macro.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 39 |
1 files changed, 2 insertions, 37 deletions
diff --git a/configure.ac b/configure.ac index 8fe1d23e..29068100 100644 --- a/configure.ac +++ b/configure.ac @@ -237,43 +237,8 @@ dnl AC_MSG_ERROR([Cannot find a type to use in place of socklen_t]) ]) TYPE_SOCKLEN_T -dnl Date: Sun, 26 Feb 2012 11:31:50 -0800 -dnl From: Paul Eggert <eggert@cs.ucla.edu> -dnl To: arnold@skeeve.com -dnl CC: bug-grep@gnu.org -dnl Subject: Re: avoid gcc 4.6.2 'may be used before set' warnings in dfa.c -dnl -dnl On 02/26/2012 01:18 AM, arnold@skeeve.com wrote: -dnl > It looks like I can just use the code as it is now in grep. I have asked -dnl > for compile failures and haven't gotten any. -dnl -dnl Sure, but the gnulib support for this is better -dnl than what's in the dfa code. It could be that -dnl your correspondents aren't using the less-common hosts -dnl or compiler warning options that gnulib is ported to. -dnl -dnl In the long run stdnoreturn.h or _Noreturn is the way to go, -dnl since they're part of the C standard. -dnl -dnl If you'd rather not create a separate file, how about if -dnl we change the dfa code to use _Noreturn instead of -dnl <stdnoreturn.h> and noreturn, and you can put the -dnl following into your configure.ac so that config.h -dnl defines _Noreturn the same way gnulib does: - -AH_VERBATIM([_Noreturn], -[/* The _Noreturn keyword of C11. */ -#ifndef _Noreturn -# if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \ - || 0x5110 <= __SUNPRO_C) -# define _Noreturn __attribute__ ((__noreturn__)) -# elif defined _MSC_VER && 1200 <= _MSC_VER -# define _Noreturn __declspec (noreturn) -# else -# define _Noreturn -# endif -#endif -]) +dnl Check for C11 _Noreturn +GAWK_AC_NORETURN dnl checks for functions AC_FUNC_VPRINTF |