X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-psi;a=blobdiff_plain;f=config.m4;h=98c064876b0a384ace46dbf8b52a704b4b9b4850;hp=2c7af0b58cbe2d0fec1d7534000c0f0da53b6370;hb=5e240548ba570610ce0dbc248a2b7654a0e080fa;hpb=a107dfcca2dfd0fc5a2779a8d679f778cb8f3290

diff --git a/config.m4 b/config.m4
index 2c7af0b..98c0648 100644
--- a/config.m4
+++ b/config.m4
@@ -48,7 +48,7 @@ PHP_ARG_ENABLE(psi, whether to enable PHP System Interface support,
 
 if test "$PHP_PSI" != no; then
 	PHP_CONFIGURE_PART(Configuring PSI)
-
+	
 	PHP_ARG_ENABLE(psi-posix, whether to pre-define POSIX decls,
 	[  --enable-psi-posix=...  PSI: pre-define POSIX decls], [ ], [ ])
 
@@ -60,6 +60,20 @@ if test "$PHP_PSI" != no; then
 
 	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_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=