Index: Linux-PAM/configure.in
===================================================================
--- Linux-PAM/configure.in	(revision 303)
+++ Linux-PAM/configure.in	(working copy)
@@ -301,7 +301,7 @@
 ### May need per-OS attention
 ### Example: -D_POSIX_SOURCE: needed on Linux but harms Solaris.
 	case $OS in
-	linux|gnu)
+	linux|gnu|gnu/*)
 		OS_CFLAGS=
 		LD_D="$CC -shared $LDFLAGS"
 		WARNINGS="$GCC_WARNINGS"