Index: tools/scan-build/bin/scan-build
===================================================================
--- tools/scan-build/bin/scan-build
+++ tools/scan-build/bin/scan-build
@@ -1468,6 +1468,13 @@
     $Clang = Cwd::realpath("$RealBin/bin/clang") if (-f "$RealBin/bin/clang");
     if (!defined $Clang || ! -x $Clang) {
       $Clang = Cwd::realpath("$RealBin/clang") if (-f "$RealBin/clang");
+      if (!defined $Clang || ! -x $Clang) {
+        # Look for a clang in the sibling bin of the parent of the bin directory. So
+        # if scan-build is at /usr/local/bin/scan-build look for clang at /usr/bin/clang
+        if (-f "$RealBin/../../bin/clang") {
+          $Clang = Cwd::realpath("$RealBin/../../bin/clang");
+        }
+      }
     }
     if (!defined $Clang || ! -x $Clang) {
       return "error: Cannot find an executable 'clang' relative to" .