Error building PPSSPP 0.9.7 on OSX

[-Soel-]

Hello,
I'm trying to build PPSSPPSDL 0.9.7 on OSX 10.7.5, but cmake fails giving me those errors:

Generating something_that_never_exists
-- Found Git: /usr/bin/git (found version "1.7.12.4 (Apple Git-37)")
CMake Warning at git-version.cmake:40 (message):
UPDATE: /Applications/Emulators/PPSSPP/SourceCode/ppsspp/git-version.cpp

Undefined symbols for architecture x86_64:
"___sincos_stret", referenced from:
_ff_mdct_init in libavcodec.a(mdct_float.o)
_ff_ps_init in libavcodec.a(aacps.o)
"___sincosf_stret", referenced from:
_ff_ps_init in libavcodec.a(aacps.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [PPSSPPSDL] Error 1
make[1]: *** [CMakeFiles/PPSSPPSDL.dir/all] Error 2
make: *** [all] Error 2

Can someone help me solve this problem?
Thanks in advance for your help.