diff --git a/libtcc.c b/libtcc.c
index 4250933..70f0f61 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -890,23 +890,22 @@ LIBTCCAPI TCCState *tcc_new(void)
 # if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) \
   || defined(__NetBSD__) || defined(__OpenBSD__)
     tcc_define_symbol(s, "__WINT_TYPE__", "int");
-# else
-    tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
-# endif
-# if 0
-    /* glibc defines */
-    tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
-        "name proto __asm__ (#alias)");
-    tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
-        "name proto __asm__ (#alias) __THROW");
-# endif
-# if 1
-    /* define __GNUC__ to have some useful stuff from sys/cdefs.h */
+#  ifdef __FreeBSD__
+    /* define __GNUC__ to have some useful stuff from sys/cdefs.h
+       that are unconditionally used in FreeBSDs other system headers :/ */
     tcc_define_symbol(s, "__GNUC__", "2");
     tcc_define_symbol(s, "__GNUC_MINOR__", "1");
     tcc_define_symbol(s, "__builtin_alloca", "alloca");
     tcc_define_symbol(s, "__builtin_memcpy", "memcpy");
     tcc_define_symbol(s, "__USER_LABEL_PREFIX__", "");
+#  endif
+# else
+    tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
+    /* glibc defines */
+    tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
+        "name proto __asm__ (#alias)");
+    tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
+        "name proto __asm__ (#alias) __THROW");
 # endif
 #endif /* ndef TCC_TARGET_PE */