402461beb0
Ensure that libSupport does not carry any static global initializer. libSupport can be embedded in use cases where we don't want to load all cl::opt unless we want to parse the command line. ManagedStatic can be used to enable lazy-initialization of globals. The -Werror=global-constructors is only added on platform that have support for the flag and for which std::mutex does not have a global destructor. This is ensured by having CMake trying to compile a file with a global mutex before adding the flag to libSupport.
Compiler-RT ================================ This directory and its subdirectories contain source code for the compiler support routines. Compiler-RT is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt. ================================