I got a pretty simple project that uses Qt as well as FFmpeg that i developed under linux.
Now I'am having trouble cross compiling said project with MXE to use it on a windows machine.
Under linux everything i had to do was adding
LIBS += -lavcodec -lavformat -lswscale -lavutil
to Qt's .pro file and wrap the includes for FFmpeg in an "extern "C"" block and it compiles just fine.
Now for MXE i just cloned the git repo and used
make MXE_TARGETS='x86_64-w64-mingw32.static' qt5 ffmpeg
As the MXE doc states i set the PATH variable and used
qmake && make
But i get a lot of undefined reference errors regarding libavformat.
Can anybody tell me what i am doing wrong here? I'm kinda lost.
Okay so I got this working.
The mxe version of gcc requires you to include the library multiple times if it is referenced by a library after it in the list of libraries to link.
Add -lavformat to the end of the LIBS line.