From ff06d4258eb4862b6ab01999d07fc4a888f0295c Mon Sep 17 00:00:00 2001
From: seyko <seyko2@gmail.com>
Date: Sun, 10 May 2015 10:21:37 +0300
Subject: [PATCH] define __OPTIMIZE__ if -ON (N != 0)

    this is gcc behaviour
---
 libtcc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/libtcc.c b/libtcc.c
index 6d65e84c..c58f4542 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -2048,6 +2048,15 @@ PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
                 tcc_warning("unsupported language '%s'", optarg);
             break;
         case TCC_OPTION_O:
+            if (1) {
+                int opt = atoi(optarg);
+                char *sym = "__OPTIMIZE__";
+                if (opt)
+                    tcc_define_symbol(s, sym, 0);
+                else
+                    tcc_undefine_symbol(s, sym);
+            }
+            break;
         case TCC_OPTION_pedantic:
         case TCC_OPTION_pipe:
             /* ignored */
-- 
2.11.4.GIT