如何使用 llvm-mingw 的 clang？并且如何使用 xmake.lua 配置？

[YuHuanTin]

如题

xmake f -p mingw --sdk=D:\llvm-mingw-20251007-ucrt-x86_64 使用的是 g++

[waruqi]

暂不支持，等这个 patch #6924

[twinstar6980]

3.0.2和更早的版本里，我使用 --toolchain=mingw 并在环境变量中配置llvm-mingw路径，能够正常编译。但是在3.0.3版本开始会编译模块时报错，额外指定了 --cxx=clang++ 后恢复正常编译。

[waruqi]

可以了，再试试,

xmake update dev
xmake f -p mingw --sdk=D:\llvm-mingw-20251007-ucrt-x86_64 --toolchain=mingw[clang] -c
xmake

[YuHuanTin]

使用 CLI 配置正常，但是如何使用 xmake.lua 进行配置呢？bin目录下存在这些程序

>set PATH=%PATH%;D:\llvm-mingw-20251007-ucrt-x86_64;D:\llvm-mingw-20251007-ucrt-x86_64\bin;

>echo %PATH%
...;D:\llvm-mingw-20251007-ucrt-x86_64;D:\llvm-mingw-20251007-ucrt-x86_64\bin;

>xmake -vD
checking for the c++ compiler (cxx: x86_64-w64-mingw32-clang++) ... no
checking for the c++ compiler (cxx: x86_64-w64-mingw32-clang) ... no
checking for the linker (ld: x86_64-w64-mingw32-clang++) ... no
checking for the linker (ld: x86_64-w64-mingw32-clang) ... no
checking for the shared library linker (sh: x86_64-w64-mingw32-clang++) ... no
checking for the shared library linker (sh: x86_64-w64-mingw32-clang) ... no
checking for Cuda SDK directory ... no
checking for the c++ compiler (cxx: nvc++) ... no
error: @programdir\core\main.lua:272: @programdir\actions\build\main.lua:160: @programdir\modules\async\runjobs.lua:390: ...amdir\core\sandbox\modules\import\core\tool\compiler.lua:37: cannot get program for cxx
stack traceback:
    [C]: in function 'error'
    [@programdir\core\base\os.lua:1093]:
    [...amdir\core\sandbox\modules\import\core\tool\compiler.lua:37]: in function 'load'
    [@programdir\modules\private\action\build\object.lua:40]: in function 'script'
    [@programdir\modules\private\action\build\object.lua:131]: in function 'build_object'
    [@programdir\modules\private\action\build\object.lua:171]: in function 'job_func'
    [@programdir\modules\async\runjobs.lua:206]:

stack traceback:
        [C]: in function 'error'
        @programdir\core\base\os.lua:1093: in function 'os.raiselevel'
        (...tail calls...)
        @programdir\core\main.lua:272: in upvalue 'cotask'
        @programdir\core\base\scheduler.lua:514: in function <@programdir\core\base\scheduler.lua:507>

add_rules("mode.debug", "mode.release")

set_toolchains("mingw[clang]")

target("test2")
    set_kind("binary")
    add_files("src/*.cpp")

[waruqi]

你没设置 sdk 路径

[YuHuanTin]

sdk 路径只能通过 --sdk 命令行或者新建 toolchain 设置 set_sdkdir 来指定吗？

[waruqi]

set_config("sdk", "...") 也可以

[YuHuanTin]

set_arch("x86_64")
set_plat("mingw")
set_config("sdk", "D:\\llvm-mingw-20251007-ucrt-x86_64")
set_toolchains("mingw[clang]")

附上完整 xmake.lua