removed the dependency on OpenMP

[ktarplee]

Closes #2

[cheind]

hey there! Thanks for the PR.

• Could you please base your PR on the develop branch (should be just a dropdown select on your side)?
• If we disable OpenMP things will be slower (I hope ;) on multicore CPUs. So we should make this optional. One way would be to perform

find_package(OpenMP QUIET)

if(OpenMP_FOUND)
  message("Compiling with OpenMP support")
  target_compile_options(lapsolverc PUBLIC "$<$<CONFIG:RELEASE>:${OpenMP_CXX_FLAGS}>")
else()
  message("Compiling without OpenMP support")
endif()

So people having OpenMP installed would benefit from the parallelization, while the library still compiles for others.

[cheind]

In the meantime I will have a look why the appveyor build fails.

[ktarplee]

What code is actually using OpenMP? I did not find any "#pragma omp" lines in your code?

[cheind]

Oh you are correct, it seems like I have dropped OpenMP support myself and forgot about the CMakeLists file. My bad!

[cheind]

merged to develop. Hopefully have time soon to make a release.