[all-commits] [llvm/llvm-project] af2796: [test] Add ability to get error messages from CMak...

[zero9178 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: af2796c76d2ff4b73165ed47959afd35a769beee
      https://github.com/llvm/llvm-project/commit/af2796c76d2ff4b73165ed47959afd35a769beee
  Author: Markus Böck <markus.boeck02 at gmail.com>
  Date:   2021-03-15 (Mon, 15 Mar 2021)

  Changed paths:
    M clang/CMakeLists.txt
    M clang/test/lit.site.cfg.py.in
    M lld/CMakeLists.txt
    M lld/test/lit.site.cfg.py.in
    M llvm/CMakeLists.txt
    A llvm/cmake/modules/GetErrcMessages.cmake
    M llvm/test/lit.site.cfg.py.in
    M llvm/utils/lit/lit/llvm/config.py

  Log Message:
  -----------
  [test] Add ability to get error messages from CMake for errc substitution

Visual Studios implementation of the C++ Standard Library does not use strerror to produce a message for std::error_code unlike other standard libraries such as libstdc++ or libc++ that might be used.

This patch adds a cmake script that through running a C++ program gets the error messages for the POSIX error codes and passes them onto lit through an optional config parameter.

If the config parameter is not set, or getting the messages failed, due to say a cross compiling configuration without an emulator, it will fall back to using pythons strerror functions.

Differential Revision: https://reviews.llvm.org/D98278