2008-09-17  Stepan Kasal  <skasal@redhat.com>

	* configure.ac: Add -D_GNU_SOURCE to get struct ucred from
	socket.h.

diff -up brltty-3.10/configure.ac.gnusource brltty-3.10/configure.ac
--- brltty-3.10/configure.ac.gnusource	2008-07-17 00:19:54.000000000 +0200
+++ brltty-3.10/configure.ac	2008-09-17 12:44:28.000000000 +0200
@@ -779,7 +779,7 @@ AC_CACHE_CHECK([for system-dependent com
 case "${host_os}"
 in
    linux*|gnu*|kfreebsd*)
-      brltty_cv_prog_cc_sysflags="-D_POSIX_C_SOURCE=2 -D_BSD_SOURCE -D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED"
+      brltty_cv_prog_cc_sysflags="-D_POSIX_C_SOURCE=2 -D_BSD_SOURCE -D_XOPEN_SOURCE=500 -D_XOPEN_SOURCE_EXTENDED -D_GNU_SOURCE"
       ;;
    solaris*)
       brltty_cv_prog_cc_sysflags="-D_XOPEN_SOURCE=500 -D__EXTENSIONS__"