Ticket #55800: libvpx.diff

multimedia/libvpx/Portfile

@@ -60 +60 @@
 # vp9/encoder/x86/vp9_frame_scale_ssse3.c: In function ‘eight_tap_row_ssse3’:
 # vp9/encoder/x86/vp9_frame_scale_ssse3.c:93: internal compiler error: Segmentation fault
 # {standard input}:unknown:Undefined local symbol LC2
-compiler.blacklist  *gcc* {clang < 800}
+compiler.blacklist  *gcc* {clang < 800} macports-clang-3.3 macports-clang-3.4 macports-clang-3.7 macports-clang-3.8
+# Make sure that mp-clang-3.9 is picked if all compilers were blacklisted.
+# Especially important for 10.6 on libc++, since the fallback list contains macports-clang-3.7
+# as the first, and thus selected, fallback option (even though it has been blacklisted earlier).
+compiler.fallback-prepend macports-clang-3.9
 
 # As of 1.7.0: builds both static and shared libraries
 # doesn't install docs or examples correctly, so disable them.