From 8482682061ea09b3900d9e0d6adda8bba1deb543 Mon Sep 17 00:00:00 2001
From: Arthur Williams <taaparthur@disroot.org>
Date: Sat, 23 Jul 2022 15:03:21 -0700
Subject: [PATCH] Define __TCC_BACKTRACE_ENABLED__ if backtrace is enabled

If the `-btN` was specified, then the __TCC_BACKTRACE_ENABLED__
macro will be defined. This provides a way for user code
to tell if tcc_backtrace is defined or not.
---
 tccpp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tccpp.c b/tccpp.c
index 6a86f097..31c3a2b3 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -3756,6 +3756,10 @@ static void tcc_predefs(TCCState *s1, CString *cs, int is_asm)
 #ifdef CONFIG_TCC_BCHECK
     if (s1->do_bounds_check)
       putdef(cs, "__BOUNDS_CHECKING_ON");
+#endif
+#ifdef CONFIG_TCC_BACKTRACE
+    if (s1->do_backtrace)
+      putdef(cs, "__TCC_BACKTRACE_ENABLED__");
 #endif
     cstr_printf(cs, "#define __SIZEOF_POINTER__ %d\n", PTR_SIZE);
     cstr_printf(cs, "#define __SIZEOF_LONG__ %d\n", LONG_SIZE);