+ dnl we need _GNU_SOURCE to get PTHREAD_MUTEX_RECURSIVE with glibc 2.1+
+ dnl (strictly speaking we only need _XOPEN_SOURCE=500 but just defining
+ dnl this disables _BSD_SOURCE which breaks libtiff compilation, so it is
+ dnl simpler to just define _GNU_SOURCE to get everything)
+ if test "x$wx_lib_glibc21" = "xyes"; then
+ CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
+ fi
+