1 files changed, 3 insertions, 0 deletions
diff --git a/machine.h b/machine.h
index 8f02b619..fdd5c68f 100644
--- a/machine.h
+++ b/machine.h
@@ -94,6 +94,7 @@ enum {
 	OS_NETBSD,
 	OS_OPENBSD,
 	OS_SUNOS,
+	OS_UNIX,
 	OS_UNKNOWN,
 };
 
@@ -111,6 +112,8 @@ enum {
 #define OS_NATIVE	OS_OPENBSD
 #elif defined(__sun__) || defined(__sun)
 #define OS_NATIVE	OS_SUNOS
+#elif defined(__unix__) || defined(__unix)
+#define OS_UNIX		OS_UNIX
 #else
 #define OS_NATIVE	OS_UNKNOWN
 #endif