diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index bc317cf0..8fe1d23e 100644 --- a/configure.ac +++ b/configure.ac @@ -23,7 +23,7 @@ dnl dnl Process this file with autoconf to produce a configure script. -AC_INIT([GNU Awk], 4.0.1, bug-gawk@gnu.org, gawk) +AC_INIT([GNU Awk], 4.0.1a, bug-gawk@gnu.org, gawk) # This is a hack. Different versions of install on different systems # are just too different. Chuck it and use install-sh. @@ -237,6 +237,44 @@ 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 checks for functions AC_FUNC_VPRINTF AC_FUNC_MKTIME |