Not compiling with Apple LLVM version 4.2

[mjmdavis]

Fails to compile citing an error:

[ 41%] Building CXX object gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/filter/gr_fir_ccf_x86.cc.o
Building C object gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/filter/sse_debug.c.o
brew: superenv removed: -I/usr/local/include
brew: superenv removed: -I/usr/local/include
brew: superenv removed: -I/usr/local/include
[ 41%] Building C object gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/filter/float_dotprod_sse64.S.o
brew: superenv removed: -I/usr/local/include
/tmp/gnuradio-KXU7/gnuradio-3.6.1/gnuradio-core/src/lib/filter/float_dotprod_sse64.S:57:2: error: unknown directive
 .version "01.01"
 ^
make[2]: *** [gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/filter/float_dotprod_sse64.S.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [gnuradio-core/src/lib/CMakeFiles/gnuradio-core.dir/all] Error 2
make: *** [all] Error 2
==> Configuration
HOMEBREW_VERSION: 0.9.4
HEAD: bd309c49d29e2151ec86cfb04919783834b7ca74
CPU: 8-core 64-bit ivybridge
OS X: 10.8.3-x86_64
Xcode: 4.6.2
CLT: 4.6.0.0.1.1358221012
X11: 2.7.4 => /opt/X11
==> ENV
CC: cc
CXX: c++
MAKEFLAGS: -j8
CMAKE_PREFIX_PATH: /usr/local/opt/readline:/usr/local/opt/sqlite:/usr/local/opt/gettext:/usr/local/opt/libffi:/usr/local/opt/icu4c:/usr/local
CMAKE_INCLUDE_PATH: /opt/X11/include/freetype2:/usr/include/libxml2:/opt/X11/include
CMAKE_LIBRARY_PATH: /opt/X11/lib
PKG_CONFIG_PATH: /usr/local/opt/sqlite/lib/pkgconfig:/usr/local/opt/cppunit/lib/pkgconfig:/usr/local/opt/gsl/lib/pkgconfig:/usr/local/opt/fftw/lib/pkgconfig:/usr/local/opt/pcre/lib/pkgconfig:/usr/local/opt/libffi/lib/pkgconfig:/usr/local/opt/glib/lib/pkgconfig:/usr/local/opt/libtiff/lib/pkgconfig:/usr/local/opt/libpng/lib/pkgconfig:/usr/local/opt/gdk-pixbuf/lib/pkgconfig:/usr/local/opt/icu4c/lib/pkgconfig:/usr/local/opt/freetype/lib/pkgconfig:/usr/local/opt/fontconfig/lib/pkgconfig:/usr/local/opt/harfbuzz/lib/pkgconfig:/usr/local/opt/pixman/lib/pkgconfig:/usr/local/opt/cairo/lib/pkgconfig:/usr/local/opt/pango/lib/pkgconfig:/usr/local/opt/atk/lib/pkgconfig:/usr/local/opt/gtk+/lib/pkgconfig:/usr/local/opt/pygobject/lib/pkgconfig:/usr/local/opt/py2cairo/lib/pkgconfig:/usr/local/opt/pygtk/lib/pkgconfig:/usr/local/opt/sdl/lib/pkgconfig:/usr/local/opt/libusb/lib/pkgconfig:/usr/local/opt/orc/lib/pkgconfig:/usr/local/opt/qt/lib/pkgconfig
PKG_CONFIG_LIBDIR: /usr/lib/pkgconfig:/usr/local/Library/ENV/pkgconfig/10.8:/opt/X11/lib/pkgconfig:/opt/X11/share/pkgconfig
ACLOCAL_PATH: /usr/local/opt/gettext/share/aclocal:/usr/local/share/aclocal:/opt/X11/share/aclocal
OBJC: cc
PATH: /usr/local/Library/ENV/4.3:/usr/local/opt/cmake/bin:/usr/local/opt/sqlite/bin:/usr/local/opt/gdbm/bin:/usr/local/opt/python/bin:/usr/local/opt/cppunit/bin:/usr/local/opt/gsl/bin:/usr/local/opt/fftw/bin:/usr/local/opt/pcre/bin:/usr/local/opt/swig/bin:/usr/local/opt/gettext/bin:/usr/local/opt/glib/bin:/usr/local/opt/jpeg/bin:/usr/local/opt/libtiff/bin:/usr/local/opt/libpng/bin:/usr/local/opt/gdk-pixbuf/bin:/usr/local/opt/icu4c/bin:/usr/local/opt/freetype/bin:/usr/local/opt/fontconfig/bin:/usr/local/opt/harfbuzz/bin:/usr/local/opt/cairo/bin:/usr/local/opt/pango/bin:/usr/local/opt/gtk+/bin:/usr/local/opt/pygobject/bin:/usr/local/opt/pygtk/bin:/usr/local/opt/sdl/bin:/usr/local/opt/orc/bin:/usr/local/opt/sip/bin:/usr/local/opt/qt/bin:/usr/local/opt/pyqt/bin:/opt/X11/bin:/usr/bin:/bin:/usr/sbin:/sbin

Error: gnuradio did not build

It seems that this is an issue where gnuradio fails to compile with clang: http://trac.macports.org/ticket/36453

I'm not sure how this worked before but perhaps it was before clang became the default compiler. I'm going to fix this and initiate a pull request.