Mac OS X
The Mac OS X port efforts has began recently
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Setting up compiler switches
Usually you need to tweak the compiler options to be able to compile C++ applications - that's the stuff Xcode hides from your eyes, but you better should know. You need to point to the GNU compiler's C/C++ include folders, to the GNU linkers libraries folder and a adjust the compiler options to setup the GNU compiler root path. Those path's differ depending on what hardware (processor architecture) and what version of MacOS is used. For an Intel based Mac with MacOS 10.6.2 and Xcode v3.2.2 the following should work:
Compiler search directories ("include" folders):
/Developer/SDKs/MacOSX10.6.sdk/usr/include
/Developer/SDKs/MacOSX10.6.sdk/usr/include/c++/4.2.1
Linker search directories ("library" folders):
/Developer/SDKs/MacOSX10.6.sdk/usr/lib
/Developer/SDKs/MacOSX10.6.sdk/usr/lib/gcc/i686-apple-darwin10/4.2.1
Additional compiler flags:
-isysroot /Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.6 -gdwarf-2
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