mingw logic lives in gcc.jam (the gcc toolset), so we have to use that even for clang, where the g++ alias no longer exists. Pass CXX when building b2, and override the compiler to use to c++.exe in user-config.jam
mingw logic lives in gcc.jam (the gcc toolset), so we have to use that even for clang, where the g++ alias no longer exists. Pass CXX when building b2, and override the compiler to use to c++.exe in user-config.jam