X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;ds=sidebyside;f=config.m4;h=56635fa7d2c40afe69de3cf0d03cd819d4d800cb;hb=6864dd48391d1e98959ac13d5a0914693b4f1d0f;hp=2c7af0b58cbe2d0fec1d7534000c0f0da53b6370;hpb=3a7e1819ee316d4b3076e9a1cfd9d68f66101021;p=m6w6%2Fext-psi

diff --git a/config.m4 b/config.m4
index 2c7af0b..56635fa 100644
--- a/config.m4
+++ b/config.m4
@@ -59,7 +59,21 @@ if test "$PHP_PSI" != no; then
 	[  --with-psi-libffi=DIR   PSI: path to libffi], [ ], [ ])
 
 	AC_HEADER_ASSERT dnl # adds --disable-assert to define NDEBUG
-	
+
+	dnl we cannot use AC_USE_SYSTEM_EXTENSIONS here, because we're way too late
+	dnl in the game, and we're currently only targeting _GNU_SOURCE for now
+	AC_MSG_CHECKING([for _GNU_SOURCE])
+	AC_EGREP_CPP([gnu_source_not_defined], [
+		#ifndef _GNU_SOURCE
+		gnu_source_not_defined
+		#endif
+	], [
+		AC_MSG_RESULT([needs define])
+		AC_DEFINE([_GNU_SOURCE], [], [ ])
+	], [
+		AC_MSG_RESULT([already defined])
+	])
+
 	psi_save_LIBS=$LIBS
 	LIBS=