Mercurial > hg > octave-lojdl > gnulib-hg
changeset 6623:a23e0fc1aea4
* extensions.m4 (gl_USE_SYSTEM_EXTENSIONS): Don't #define
__EXTENSIONS__ if this causes compilation to fail. Problem
reported by Nelson H. F. Beebe with Solaris 10 and Sun C 5.7
c89 -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED.
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Mon, 06 Feb 2006 05:22:04 +0000 |
| parents | 3b2f30a0eb93 |
| children | ed1144410269 |
| files | m4/ChangeLog m4/extensions.m4 |
| diffstat | 2 files changed, 18 insertions(+), 2 deletions(-) [+] |
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--- a/m4/ChangeLog +++ b/m4/ChangeLog @@ -1,3 +1,10 @@ +2006-02-05 Paul Eggert <eggert@cs.ucla.edu> + + * extensions.m4 (gl_USE_SYSTEM_EXTENSIONS): Don't #define + __EXTENSIONS__ if this causes compilation to fail. Problem + reported by Nelson H. F. Beebe with Solaris 10 and Sun C 5.7 + c89 -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED. + 2006-01-25 Simon Josefsson <jas@extundo.com> * getaddrinfo.m4: Look for getaddrinfo inside ws2tcip.h and
--- a/m4/extensions.m4 +++ b/m4/extensions.m4 @@ -1,6 +1,6 @@ # Enable extensions on systems that normally disable them. -# Copyright (C) 2003 Free Software Foundation, Inc. +# Copyright (C) 2003, 2006 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. @@ -25,6 +25,15 @@ #ifndef _POSIX_PTHREAD_SEMANTICS # undef _POSIX_PTHREAD_SEMANTICS #endif]) - AC_DEFINE([__EXTENSIONS__]) + AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__], + [ac_cv_safe_to_define___extensions__], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([ + #define __EXTENSIONS__ 1 + AC_INCLUDES_DEFAULT])], + [ac_cv_safe_to_define___extensions__=yes], + [ac_cv_safe_to_define___extensions__=no])]) + test $ac_cv_safe_to_define___extensions__ == yes && + AC_DEFINE([__EXTENSIONS__]) AC_DEFINE([_POSIX_PTHREAD_SEMANTICS]) ])