#define __GNUC__ = 2.1

__GNUC__ nowadays as macro seems to mean the "GNU C dialect"
rather than the compiler itself.  See also

  http://gcc.gnu.org/ml/gcc/2008-07/msg00026.html

This patch will probably cause problems of various kinds but
maybe we should try nonetheless.

1 files changed, 19 insertions, 6 deletions

diff --git a/libtcc.c b/libtcc.c
index 591fd79..ecb2242 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -885,15 +885,28 @@ LIBTCCAPI TCCState *tcc_new(void)
     /* wint_t is unsigned int by default, but (signed) int on BSDs
        and unsigned short on windows.  Other OSes might have still
        other conventions, sigh.  */
-#if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
+# if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
+  || defined(__NetBSD__) || defined(__OpenBSD__)
     tcc_define_symbol(s, "__WINT_TYPE__", "int");
-#else
+# else
     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
-#endif
+# 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
+    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 */
+    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
+#endif /* ndef TCC_TARGET_PE */
 
     return s;
 }