Fedora 31, ffwtw3f_threads...linking issue

[fkoehleriv]

On a stock install of Fedora 31 x86_64, found a problem during linking:

[ 26%] Linking CXX executable materialise
/usr/bin/ld: cannot find -lfftw3f_threads
/usr/bin/ld: cannot find -lfftw3f_threads
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/materialise.dir/build.make:294: materialise] Error 1
make[1]: *** [CMakeFiles/Makefile2:113: CMakeFiles/materialise.dir/all] Error 2

I edited the CMakeLists.txt to help ldd find this library for linking. I haven't worked with cmake before, so there's likely a more elegant (correct) way to fix this then what I came up with quickly:

diff CMakeLists.txt CMakeLists.txt.orig 
111c111
<       link_libraries(libfftw3f_threads.so.3 fftw3f)
---
>       link_libraries(fftw3f_threads.a fftw3f)