-weak_framework may not be supported by Apple linker: error: unrecognized command-line option '-weak_framework'; did you mean '-framework'?

[barracuda156]

[ 80%] Linking CXX executable rastertobrlaser
/opt/local/bin/cmake -E cmake_link_script CMakeFiles/rastertobrlaser.dir/link.txt --verbose=ON
/opt/local/bin/g++-mp-14  -Wall -Wno-missing-braces -Wformat -D_FORTIFY_SOURCE=2 -pipe -Os -DNDEBUG -I/opt/local/include -D_GLIBCXX_USE_CXX11_ABI=0 -arch ppc -mmacosx-version-min=10.6 -Wl,-search_paths_first -Wl,-headerpad_max_install_names -L/opt/local/lib -Wl,-headerpad_max_install_names CMakeFiles/rastertobrlaser.dir/src/main.cc.o CMakeFiles/rastertobrlaser.dir/src/job.cc.o CMakeFiles/rastertobrlaser.dir/src/line.cc.o CMakeFiles/rastertobrlaser.dir/src/debug.cc.o -o rastertobrlaser  -Wl,-rpath,/opt/local/lib -lcupsimage -lcups -weak_framework Kerberos -framework CoreFoundation -framework Security -lz -lpthread -lresolv -framework SystemConfiguration -framework CoreFoundation
g++-mp-14: error: unrecognized command-line option '-weak_framework'; did you mean '-framework'?
make[2]: *** [rastertobrlaser] Error 1

[barracuda156]

Hmm, it is pulled in by cups-config, and apparently it is GCC who does not understand the flag, not ld as such. I.e., what works correctly is -Wl,-weak_framework Kerberos. How to pass it this way though, besides manually extracting ldflags and feeding into -DCUPS_LIBS=?