Building GCC on OS X

[amneetb]

@boyceg @knepley @drwells: I am trying to build gcc on OS X with openmp. Do I need to include special configure flags for it? Unfortunately, Apple Clang does not come with libomp.

[amneetb]

(I did not see anything related to openmp with ./configure --help)

[knepley]

I do not remember doing anything special. However, on OSX, gdb does not work and there are other problems with the DWARF format. It makes gcc a lot less usable. It is almost just better to run a Linux container.

[drwells]

I don't know. I'd take a look at how spack compiles gcc to get some hints.

[amneetb]

I was able to build it successfully. There was no need to explicitly tell gcc about libomp.