[CMake] Fix linker detection in AddLLVM.cmake
Fix linker not being correctly detected when a custom one is specified
through LLVM_USE_LINKER CMake variable.
In particular,
cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_LINKER=gold ../llvm
resulted into
Linker detection: GNU ld
instead of
Linker detection: GNU Gold
due to the construction not accounting for such variable. It led to the general
confusion and prevented setting linker-specific flags inside functions defined
in AddLLVM.cmake.
Thanks Oleksii Vilchanskyi for the patch!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316956
91177308-0d34-0410-b5e6-
96231b3b80d8