CMakeLists.txt changes for Building OS X Binaries

Asked by Julio on 2012-12-27

In order to build stratagus for OS X 10.8.2, I make the following changes to CMakeLists.txt:

> add_definitions(-DMAC_BUNDLE)
> add_definitions(-DMAC_BUNDLE_DATADIR="data")
> endif()
> set_target_properties(stratagus PROPERTIES LINK_FLAGS "${LINK_FLAGS} -L/opt/local/lib /opt/local/lib/libSDLmain.a /opt/local/lib/libSDL.a -L/opt/local/lib /opt/local/lib/libxcb.a /opt/local/lib/libX11.a /opt/local/lib/libXdmcp.a /opt/local/lib/libXau.a /opt/local/lib/libXext.a /opt/local/lib/libXrandr.a /opt/local/lib/libXrender.a -Wl,-framework,OpenGL -Wl,-framework,Cocoa -Wl,-framework,ApplicationServices -Wl,-framework,Carbon -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,IOKit /opt/local/lib/libmng.a /opt/local/lib/libjpeg.a /opt/local/lib/liblcms.a")
> endif()
> set_target_properties(metaserver PROPERTIES LINK_FLAGS "${LINK_FLAGS} -L/opt/local/lib /opt/local/lib/libSDLmain.a /opt/local/lib/libSDL.a -L/opt/local/lib /opt/local/lib/libxcb.a /opt/local/lib/libX11.a /opt/local/lib/libXdmcp.a /opt/local/lib/libXau.a /opt/local/lib/libXext.a /opt/local/lib/libXrandr.a /opt/local/lib/libXrender.a -Wl,-framework,OpenGL -Wl,-framework,Cocoa -Wl,-framework,ApplicationServices -Wl,-framework,Carbon -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,IOKit /opt/local/lib/libmng.a /opt/local/lib/libjpeg.a /opt/local/lib/liblcms.a")
> endif()

The first (MAC_BUNDLE) just activates code which was already in the source, and should be safe for everyone.

The second/third (if APPLE AND ENABLE_STATIC) adds the libraries I needed to make statically linked binaries. Can't guarantee that this will work for everyone, however, it only affects anyone trying to build it on an APPLE with ENABLE_STATIC=on, so I imagine it's probably safe as well.

I then build my makefiles with the following:

cmake -G "Unix Makefiles" -DENABLE_STATIC=on -DMAC_BUNDLE=on ..
make stratagus

Any chance on getting these added to the branch?

If there's a better way (than editing CMakeLists.txt), I'm all ears.

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Pali (pali) said : #1

For first patch. We already have section in CMakeLists.txt:


Isnt USE_MAC enought (and if yes, then fix cpp source files)? I do not know that cmake APPLE and cmake MAC_BUNDLE doing... In cmake manual there is no info about MAC_BUNDLE.

Next is problematic. You are using using LINK_FLAGS for adding non-standard library directories (-L flags) and hardcoding linking libraries with full paths. CMake searching for libraries (and returning FULL path!) in find_package(...) commands. I think that you should look at SDL and X11 cmake modules and patch these (if necessery) for static linking. See cmake manual (man cmake) for more info.

Julio (artofwar) said : #2

For first patch.
USE_MAC is sufficient for building Mac binary,

If one is to make a "Mac Application Bundle" (see: it is necessary to set the MAC_BUNDLE options appropriately so that stratagus can find resources correctly within the bundle.

For flexibility, since one may desire to make a Mac binary but not create a "bundle", it is desirable to have have BOTH options separate.

I happened upon MAC_BUNDLE and MAC_BUNDLE_DATADIR while going through stratagus.cpp in an effort to make a stratagus bundle. Apparently, someone had already added the functionality :)

Pali (pali) said : #3

Hm, seems that cmake has some support for Mac Bundle, see cmake man page: So somebody with Mac OSX can look at it and write correct cmake support for that...

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