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Diffstat (limited to 'm4/extensions.m4')
| -rw-r--r-- | m4/extensions.m4 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/m4/extensions.m4 b/m4/extensions.m4 new file mode 100644 index 0000000..e71845f --- /dev/null +++ b/m4/extensions.m4 @@ -0,0 +1,30 @@ +# Enable extensions on systems that normally disable them. + +# Copyright (C) 2003 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. + +# gl_USE_SYSTEM_EXTENSIONS +# ------------------------ +# Enable extensions on systems that normally disable them, +# typically due to standards-conformance issues. +AC_DEFUN([gl_USE_SYSTEM_EXTENSIONS], [ + AC_BEFORE([$0], [AC_COMPILE_IFELSE]) + AC_BEFORE([$0], [AC_RUN_IFELSE]) + + AC_REQUIRE([AC_GNU_SOURCE]) + AC_REQUIRE([AC_AIX]) + AC_REQUIRE([AC_MINIX]) + + AH_VERBATIM([__EXTENSIONS__], +[/* Enable extensions on Solaris. */ +#ifndef __EXTENSIONS__ +# undef __EXTENSIONS__ +#endif +#ifndef _POSIX_PTHREAD_SEMANTICS +# undef _POSIX_PTHREAD_SEMANTICS +#endif]) + AC_DEFINE([__EXTENSIONS__]) + AC_DEFINE([_POSIX_PTHREAD_SEMANTICS]) +]) |