Add zig_llvm-ar.cpp in build.zig

This was added in 0afb5b2ec6de494efe0605b2270f6a01b95237af 8 days ago, but it seems it was only added in the cmake files and not build.zig
aecf4571baNicolas committed on 6/6/2021, 12:37:20 AM· committed by Andrew Kelleyparent1aeee80
1 file changedLine totals unavailable