pre-define __unix__ and friends

GCC defines these, so should we.

Signed-off-by: John Levon <john.levon@joyent.com>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/lib.c b/lib.c
index 2de2887f..f15e4d99 100644
--- a/lib.c
+++ b/lib.c
@@ -1402,6 +1402,12 @@ static void predefined_macros(void)
 	if (arch_target->predefine)
 		arch_target->predefine(arch_target);
 
+	if (arch_os >= OS_UNIX) {
+		predefine("__unix__", 1, "1");
+		predefine("__unix", 1, "1");
+		predefine_nostd("unix");
+	}
+
 	if (arch_os == OS_SUNOS) {
 		predefine("__sun__", 1, "1");
 		predefine("__sun", 1, "1");