clang-scan-deps中应该使用绝对路径

[24bit-xjkp]

Xmake 版本

2.8.5

操作系统版本和架构

Windows 11 23H2

描述问题

[  0%]: generating.module.deps module.ixx
clang-scan-deps --format=p1689 -- clang -x c++ -c module.ixx -o build\.objs\test\windows\x64\release\module.ixx.obj -Qunused-arguments -m64 -std=c++23 -fexceptions -fcxx-exceptions
error: Error while scanning dependencies for module.ixx:
...
D:/Tools/gcc/include/malloc.h:83:10: fatal error: 'mm_malloc.h' file not found

而之所以clang找不到头文件是因为"clang-scan-deps --format=p1689 -- clang -x c++ -c module.ixx -o build.objs\test\windows\x64\release\module.ixx.obj -Qunused-arguments -m64 -std=c++23 -fexceptions -fcxx-exceptions"中的clang没有使用绝对路径，我在rules/c++/modules/modules_support/clang.lua里找到了问题所在

-- We need absolute path of clang to use clang-scan-deps
-- See https://clang.llvm.org/docs/StandardCPlusPlusModules.html#possible-issues-failed-to-find-system-headers
local clang_path = compinst:program()
if not path.is_absolute(clang_path) then
        clang_path = _get_clang_path(target) or compinst:program()
end

但事实上clang_path中仍然是"clang"而不是绝对路径

期待的结果

应该使用clang的绝对路径

工程配置

-- xmake.lua
set_languages("c++latest")
target("test")
    add_files("*.cpp", "*.ixx")

// module.ixx
module;
#include <iostream>
export module A;

// test.cpp
import A;
int main() {}

xmake的构建命令为xmake f --toolchain=clang; xmake build

附加信息和错误日志

[  0%]: generating.module.deps test.cpp
clang-scan-deps --format=p1689 -- clang -x c++ -c test.cpp -o build\.objs\test\windows\x64\release\test.cpp.obj -Qunused-arguments -m64 -std=c++23 -fexceptions -fcxx-exceptions
[  0%]: generating.module.deps module.ixx
clang-scan-deps --format=p1689 -- clang -x c++ -c module.ixx -o build\.objs\test\windows\x64\release\module.ixx.obj -Qunused-arguments -m64 -std=c++23 -fexceptions -fcxx-exceptions
error: Error while scanning dependencies for module.ixx:
In file included from module.ixx:2:
In file included from D:/Tools/gcc/include/c++/14.0.0/iostream:41:
In file included from D:/Tools/gcc/include/c++/14.0.0/ostream:40:
In file included from D:/Tools/gcc/include/c++/14.0.0/ios:44:
In file included from D:/Tools/gcc/include/c++/14.0.0/bits/ios_base.h:39:
In file included from D:/Tools/gcc/include/c++/14.0.0/ext/atomicity.h:35:
In file included from D:/Tools/gcc/include/c++/14.0.0/x86_64-w64-mingw32/bits/gthr.h:148:
In file included from D:/Tools/gcc/include/c++/14.0.0/x86_64-w64-mingw32/bits/gthr-default.h:32:
In file included from D:/Tools/gcc/include/c++/14.0.0/stdlib.h:36:
In file included from D:/Tools/gcc/include/c++/14.0.0/cstdlib:79:
In file included from D:/Tools/gcc/include/stdlib.h:769:
D:/Tools/gcc/include/malloc.h:83:10: fatal error: 'mm_malloc.h' file not found

stack traceback:
        [C]: in function 'error'
        @programdir\core\base\os.lua:927: in function 'base/os.raiselevel'
        (...tail calls...)
        @programdir\core\main.lua:309: in upvalue 'cotask'
        @programdir\core\base\scheduler.lua:404: in function <@programdir\core\base\scheduler.lua:397>

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

Title: Absolute paths should be used in clang-scan-deps

[waruqi]

再试试

xmake update -s dev

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

try again

xmake update -s github:xmake-io/xmake#clang

[24bit-xjkp]

看起来不行，我在此处设置了print语句

if program and (toolname == "clang" or toolname == "clangxx") then
    local clang = find_tool("clang", {program = program, envs = os.getenvs()})
    print(clang)
    if clang then
        clang_path = clang.program
    end
end

但输出的结果是

{
  name = "clang",
  program = "clang"
}

依然只有clang而没有绝对路径

[waruqi]

再试试，xmake update -s dev

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

Try again, xmake update -s dev

[24bit-xjkp]

现在可以正常工作了

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

It works fine now