Exempt clang from -Wunused-value when run as cc

We already have an exception for it when called as clang or clang-1.2.3,
but not when called as cc or anything else.  Mac OS X Mountain Lion
therefore ends up spitting out lots of warnings, as cc is a symlink
to clang.

1 files changed, 9 insertions, 0 deletions

diff --git a/cflags.SH b/cflags.SH
index b377ece5a5..e1c409dafc 100755
--- a/cflags.SH
+++ b/cflags.SH
@@ -327,6 +327,15 @@ for file do
         esac
       done
       ;;
+    *)
+      # clang may not be called clang
+      case "`$cc -v 2>&1`" in
+      *clang*)
+        case "$warn" in
+        *-Wno-unused-value) ;;
+        *) warn="$warn -Wno-unused-value"
+        esac
+      esac
     esac