Invoke the binary for linking, not the name
Make the platform probe the file at CT, hence allow it to work for X compilation
Merge pull request #379 from Geod24/fix-singlefile-linker

Invoke the compiler binary name for linking, not the compiler name.
Merge pull request #380 from Geod24/ct-platform-probe

Make the platform probe the file at CT, hence allow it to work for cross-compilation.