[Jack-Devel] About cross-compilation of jack2 in MXE and libportaudio

Hi, guys! I recently committed the entry for jack2 to the MXE cross-compiler, specifically version 1.9.10. One notable thing was needed and that was linking to flac, vorbis, vorbisenc, and ogg, dependencies that libsndfile had (needed for static linking). Timothy Gu of MXE suggested that a recent commit in jack2 utilised pkg-config for libsndfile and that would eliminate the need of my not-so-pretty hack. Anyway, this is not the main reason for this message. But any general points about cross-compilation of jack2 and required/suggested libraries would be nice. The main reason is portaudio. After building jack2 in MXE, I saw this in my log: + install /home/xnakos/Projects/mxe/usr/i686-w64-mingw32.shared/lib/libportaudio.dll.a (from build/windows/libportaudio.dll.a) This resulted in portaudio library, which was already built in MXE as a requirement for jack2, to be overwritten. I am not quite sure I understand the reasons for this. So I would really enjoy an explanation! In practice, when trying to cross-compile Hydrogen drum machine, this overwrite would result in linking errors such as: CMakeFiles/hydrogen-core-0.9.7.dir/objects.a(portaudio_driver.cpp.obj): In function `ZN6H2Core15PortAudioDriver10disconnectEv': portaudio_driver.cpp:107: undefined reference to `Pa_StopStream' portaudio_driver.cpp:114: undefined reference to `Pa_CloseStream' portaudio_driver.cpp:121: undefined reference to `Pa_Terminate' portaudio_driver.cpp:111: undefined reference to `Pa_GetErrorText' portaudio_driver.cpp:118: undefined reference to `Pa_GetErrorText' CMakeFiles/hydrogen-core-0.9.7.dir/objects.a(portaudio_driver.cpp.obj): In function `ZN6H2Core15PortAudioDriver7connectEv': portaudio_driver.cpp:71: undefined reference to `Pa_Initialize' portaudio_driver.cpp:75: undefined reference to `Pa_GetErrorText' portaudio_driver.cpp:87: undefined reference to `Pa_OpenDefaultStream' portaudio_driver.cpp:91: undefined reference to `Pa_GetErrorText' portaudio_driver.cpp:95: undefined reference to `Pa_StartStream' portaudio_driver.cpp:99: undefined reference to `Pa_GetErrorText' These errors are not present when linking to the original portaudio library. Any information would be great, because I am definitely missing a lot. Harry