build: Support building using clang-usan and disable-optimization

Clang Undefined Behaviour Sanitizer seems to make non-constant constant expressions, making the compilation fail when they are used within inline assembly if no optimization is requested. Add -O1 to the cflags to hide the misbehaviour. Bug-Id: 683
11 years ago · 4d25c2bc76
parent 7c377f0e74
commit 4d25c2bc76
1 changed files with 1 additions and 1 deletions
--- a/2
+++ b/2
@ -2443,7 +2443,7 @@ case "$toolchain" in
    ;;
    clang-usan)
        cc_default="clang"
-        add_cflags  -fsanitize=undefined
+        add_cflags  -fsanitize=undefined -O1
        add_ldflags -fsanitize=undefined
    ;;
    gcc-asan)