Force CMake to use static libraries

Question

[Shamelessly cross-posted from the CMake help list]

I\'m trying to create binaries as statically as possible. The fortran code I\'ve got has got X11 and quadmath a

Answer 1

I was having a similar problem. Turns out that cmake was implicitly linking against libgfortran and libquadmath. To fix this I put the following in my top level CMakeLists.txt:

unset(CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES)

I could then explicitly link again the libraries using:

SET_TARGET_PROPERTIES(main_f PROPERTIES LINKER_LANGUAGE "C"
  LINK_FLAGS
  "/usr/local/Cellar/gcc/7.1.0/lib/gcc/7/libgfortran.a 
  /usr/local/Cellar/gcc/7.1.0/lib/gcc/7/libquadmath.a -lm -lgcc"
)

The static version of libgfortran is necessary because the shared library also depends on libquadmath. The added "-lm" and "-lgcc" bring in the system dynamic versions of these libraries. On a mac system, you would want to use the full path to your libm.a as well.