diff --git a/os/irix/cconfig.h b/os/irix/cconfig.h
new file mode 100644
index 00000000..f4950e38
--- /dev/null
+++ b/os/irix/cconfig.h
@@ -0,0 +1,20 @@
+/* common cpp predefines */
+#define    CPPADD    { "-Dunix", "-Dsgi", "-D__SVR4", "-D__unix", "-D__sgi", "-D__ELF__", NULL }
+
+/* host-dependent */
+#define CRT0        "crt1.o"
+#define CRTBEGIN    0
+#define CRTEND        0
+#define CRTI        0
+#define    GCRT0       0
+#define    RCRT0       0
+
+/* host-independent */
+#define    DYNLINKARG    "-Bdynamic"
+#define    DYNLINKLIB    "/lib32/rld"
+
+#if defined(mach_mips)
+#define    CPPMDADD { "-D__mips__", NULL, }
+#else
+#error defines for arch missing
+#endif