[libmicrohttpd] building a 0.9.1 universal lib under mac os x

[Ronny Falk]

with those settings, I was able to produce a nice "fat" library (i386+x86_64) on osx10.6/10.5:

export MACOSX_DEPLOYMENT_TARGET="10.5"

export CFLAGS="-Os -fomit-frame-pointer -pipe -arch i386 -arch x86_64 -mmacosx-version-min=10.5 -isysroot /Developer/SDKs/MacOSX10.5.sdk"

export CXXFLAGS="-Os -fomit-frame-pointer -pipe -arch i386 -arch x86_64 -mmacosx-version-min=10.5 -isysroot /Developer/SDKs/MacOSX10.5.sdk"

export LDFLAGS="-arch i386 -arch x86_64 -mmacosx-version-min=10.5"

export CC="gcc-4.2"

export CXX="g++-4.2"

export CPP="gcc -E"

export CXXCPP="g++ -E"

./configure --prefix=/Users/ronny/projects/mhd --disable-https --disable-dependency-tracking

make && make install