Multiple compiler link problems

Usage
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1

For $reasons$, I need to build my project as libraries using different compilers and then link them together. I am on MacOS and am trying to blend XCode and GCC.

I’ve set up a MWE on GitHub here with a longer explanation of the situation.

I think the problem is that the two compilers are using different standard libraries. This causes the linker to be unable to find desired symbols. When I try to force the same standard library, the secondary compiler (gcc) is not able to find the standard library headers.

Any help is appreciated,

Rob

2

This problem really boils down to the fact that GCC does not actually support libc++ in a useful way.