msys20230526 编译 llvm 12.0.1

msys20230526 下载地址

https://github.com/msys2/msys2-installer/releases/download/2023-05-26/msys2-x86_64-20230526.exe

msys20230526 对应的gcc版本是 13.1.0

安装完成后，开始菜单-> "MSYS2 MINGW64", 运行以下命令：

pacman -S --needed base-devel mingw-w64-x86_64-toolchain

打开一个dos窗口，运行以下命令

set path=D:\dev_env\cpp\msys20230526\mingw64\bin;%path%

gcc --version

cd D:\project\llvm\12.0.1

set path=D:\dev_env\cpp\cmake\bin;%path%

cmake -G "MinGW Makefiles" -S ./llvm -B ./build_dyn_x64 -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang;" -DLLVM_TARGETS_TO_BUILD="X86"  -DBUILD_SHARED_LIBS=ON -DLLVM_INCLUDE_TESTS=OFF -DLLVM_BUILD_TESTS=OFF -DLLVM_INCLUDE_BENCHMARKS=OFF -DLLVM_BUILD_BENCHMARKS=OFF -DLLVM_ENABLE_DUMP=ON

cmake --build ./build_dyn_x64 -j 16

cmake -DCMAKE_INSTALL_PREFIX="D:\project\llvm\12.0.1\build_dyn_x64\install" -P .\build_dyn_x64\cmake_install.cmake

cd build_dyn_x64\install\bin

;; 将 "D:\dev_env\cpp\msys20230526\mingw64\bin\" 目录下以下文件拷贝到 build_dyn_x64\install\bin 目录下
libstdc++-6.dll
libgcc_s_seh-1.dll
libwinpthread-1.dll
zlib1.dll

;; 接下来运行 clang.exe
clang.exe --version

之前编译后运行clang crash 的原因可能是

• path等环境变量的影响
  可以缩减path环境变量的范围
  在我的机器上，path环境变量很简单

C:\Program Files (x86)\Common Files\Oracle\Java\javapath
C:\Windows\system32
C:\Windows
C:\Windows\System32\Wbem
C:\Windows\System32\WindowsPowerShell\v1.0\
C:\Windows\System32\OpenSSH\
D:\Programdata\Git\cmd
D:\dev_env\java\jdk8\bin
D:\dev_env\java\jdk8\jre\bin
D:\dev_env\go\go1.21.13.windows-amd64\go\bin
D:\dev_env\python\Scripts\
D:\dev_env\python\
C:\Users\ccc\AppData\Local\Microsoft\WindowsApps
C:\Program Files (x86)\Tencent\QQGameTempest\Hall.58204\

• DIPrinter.h需要添加 include

#include <cstdint> // include this header for uint64_t

• 操作系统可能受到了破坏
  将 install 目录打包后考到一个干净的虚拟环境， 再次运行 clang