Look for -fdebug-prefix-map feature explicitly

Seems like old clang-3.4 didn't have this feature, while the
newer MinGW might. So remove the hardcoding, and do the check.

diff --git a/test/suites/debug_prefix_map.bash b/test/suites/debug_prefix_map.bash
index 256d4cbc23c12b1eff27c3a4f55dd662622fd820..25cc36ff2248a4e5143c0d1de3912cf764babd8d 100644 (file)
--- a/test/suites/debug_prefix_map.bash
+++ b/test/suites/debug_prefix_map.bash
@@ -1,5 +1,6 @@
 SUITE_debug_prefix_map_PROBE() {
-    if $COMPILER_USES_MINGW; then
+    touch test.c
+    if ! $REAL_COMPILER -c -fdebug-prefix-map=old=new test.c 2>/dev/null; then
         echo "-fdebug-prefix-map not supported by compiler"
     fi
 }