configure: _XOPEN_SOURCE=500 to be like _GNU_SOURCE=1

diff --git a/configure.ac b/configure.ac
index e9527dfed5ed83f00244998251de2f8612de933a..f6a575e58caeccc583dbf210db96d5ce032c33d5 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -90,7 +90,7 @@ lldp_CHECK_OS
 AX_CFLAGS_GCC_OPTION([-D_GNU_SOURCE])    dnl GNU systems (asprintf, ...)
 AX_CFLAGS_GCC_OPTION([-D__EXTENSIONS__]) dnl Solaris (CMSG_*)
 AX_CFLAGS_GCC_OPTION([-D_XPG4_2])        dnl Solaris (CMSG_*)
-AX_CFLAGS_GCC_OPTION([-D_XOPEN_SOURCE])  dnl HP-UX
+AX_CFLAGS_GCC_OPTION([-D_XOPEN_SOURCE=500])      dnl HP-UX
 AX_CFLAGS_GCC_OPTION([-D_XOPEN_SOURCE_EXTENDED]) dnl HP-UX
 
 AC_CACHE_SAVE