Code refuses to link on Fedora 36

[deeptho]

With the default compile flags, a linker error occurs on fedora 36 (linux, x86-64) because that code is compiled without -fPIC, which is necessary for shared libraries: ldpc_decoder/libldpc_decoder_avx2.a(ldpc_decoder_avx2.cc.o): relocation R_X86_64_32 against hidden symbol '_ZN9ldpc_avx211LdpcDecoderE' can not be used when making a shared object

I succeeded in making it link and run by adding, in lib/CMakeLists.txt: +add_compile_options ( -fPIC )

A second such change has to be made in in cpu_features/CMakeLists.txt but that is a git submodule. So my workaround is probably not the best solution.