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-rw-r--r--src/s/freebsd.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/s/freebsd.h b/src/s/freebsd.h
index af994acd428..951d7870579 100644
--- a/src/s/freebsd.h
+++ b/src/s/freebsd.h
@@ -142,3 +142,8 @@
for X functions taking float or double parameters. */
#define NARROWPROTO 1
+
+/* The following is needed to make `configure' find Xpm and Xaw3d
+ headers, which are checked for with AC_CHECK_HEADER. */
+
+#define C_SWITCH_SYSTEM -I /usr/X11R6/include