diff --git a/tcc-doc.texi b/tcc-doc.texi
index dbfbb4a..fbb0220 100644
--- a/tcc-doc.texi
+++ b/tcc-doc.texi
@@ -338,7 +338,7 @@ Generate additional support code to check
 memory allocations and array/pointer bounds. @option{-g} is implied. Note
 that the generated code is slower and bigger in this case.
 
-Note: @option{-b} is only available on i386 for the moment.
+Note: @option{-b} is only available on i386 when using libtcc for the moment.
 
 @item -bt N
 Display N callers in stack traces. This is useful with @option{-g} or
diff --git a/tcc.h b/tcc.h
index 92e528d..50642b7 100644
--- a/tcc.h
+++ b/tcc.h
@@ -128,7 +128,8 @@
 #endif
 
 #if !defined(TCC_UCLIBC) && !defined(TCC_TARGET_ARM) && \
-    !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64)
+    !defined(TCC_TARGET_C67) && !defined(TCC_TARGET_X86_64) && \
+    !defined(CONFIG_USE_LIBGCC)
 #define CONFIG_TCC_BCHECK /* enable bound checking code */
 #endif