diff --git a/gcc/config/i386/x-sco4 b/gcc/config/i386/x-sco4
new file mode 100644
index 00000000000..1deef3af29f
--- /dev/null
+++ b/gcc/config/i386/x-sco4
@@ -0,0 +1,10 @@
+RANLIB = :
+RANLIB_TEST = false
+CC = rcc $(RCCFLAGS)
+OLDCC = rcc $(RCCFLAGS)
+RCCFLAGS = -Dunix -Di386 -DM_UNIX -DM_I386 -DNULL=0
+CCLIBFLAGS =
+CLIB = -lPW
+
+# Seems to be needed with SCO DEV3.2v4.
+X_CFLAGS = -D__STDC__=0