"${brew_prefix}/bin/cpp".
(CC): Use "${brew_prefix}/bin/gcc-4.9" instead of
"${brew_prefix}/bin/gcc".
#brew install apple-gcc42
#export IMAKECPP=/usr/local/bin/cpp-4.2
brew install gcc
-export IMAKECPP=${brew_prefix}/bin/cpp
+#export IMAKECPP=${brew_prefix}/bin/cpp
+export IMAKECPP=${brew_prefix}/bin/cpp-4.9
brew -v install libtiff
brew -v install openjpeg
brew -v install wget
-CC=${brew_prefix}/bin/gcc ./configure \
+CC=${brew_prefix}/bin/gcc-4.9 ./configure \
--with-site-includes=/usr/X11/include \
--with-site-libraries=/usr/X11/lib \
--with-canna