"Bad clang binary" with Clang 12 installed from MSYS2

[NoMore201]

Brief Issue Summary

CMate tools is unable to parse clang 12 installed from msys2 (both packages mingw-w64-clang-x86_64-clang and mingw-w64-x86_64-clang), giving the following error:

Bad Clang binary "C:\Users\iezzid1\Apps\msys2\mingw64\bin\clang.exe -v" version:12.0.0 output: clang version 12.0.0

By manually adding a kit for this compiler, everything works properly:

{
    "name": "custom clang 12 x86_64-w64-mingw32",
    "compilers": {
      "C": "C:\\Users\\someuser\\Apps\\msys2\\mingw64\\bin\\clang.exe",
      "CXX": "C:\\Users\\someuser\\Apps\\msys2\\mingw64\\bin\\clang++.exe"
    },
    "preferredGenerator": {
      "name": "Ninja"
    }
}

Expected:

1. Click button "Change active kit"
2. Click Scan for kits
3. Expected clang to appear

Apparent Behavior:

1. Click button "Change active kit"
2. Click Scan for kits
3. Only GCC is collected

CMake Tools Log

[extension] [1085] cmake.selectKit started
[kitsController] Start selection of kits. Found 5 kits.
[kitsController] Opening kit selection QuickPick
[kitsController] Rescanning for kits
[kit] Scanning for Kits on system
[kit] Scanning directory C:\Windows for compilers
[kit] Scanning directory C:\Windows\System32\Wbem for compilers
[kit] Scanning directory C:\Windows\System32\WindowsPowerShell\v1.0\ for compilers
[kit] Scanning directory C:\Windows\System32\OpenSSH\ for compilers
[kit] Scanning directory C:\Program Files\AdoptOpenJDK\jdk-11.0.10.9-hotspot\bin for compilers
[kit] Scanning directory C:\Windows\system32 for compilers
[kit] Scanning directory C:\Program Files (x86)\Pico Technology\PicoScope6\ for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Python\Python39\Scripts\ for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Python\Python39\ for compilers
[kit] Scanning directory C:\Users\someuser\Apps\ripgrep for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Python\Launcher\ for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Microsoft VS Code\bin for compilers
[kit] Scanning directory C:\Users\someuser\Apps\fd for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Microsoft\WindowsApps for compilers
[kit] Skipping scan of not existing path 
[kit] Found 0 kits in directory 
[kit] Scanning directory C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Git\cmd for compilers
[kit] Scanning directory C:\Users\someuser\Apps\msys2\mingw64\bin for compilers
[kit] Skipping scan of not existing path C:\Program Files (x86)\LLVM\bin
[kit] Found 0 kits in directory C:\Program Files (x86)\LLVM\bin
[kit] Skipping scan of not existing path C:\Program Files\LLVM\bin
[kit] Found 0 kits in directory C:\Program Files\LLVM\bin
[kit] Skipping scan of not existing path C:\Program Files (x86)\LLVM\bin
[kit] Skipping scan of not existing path C:\Program Files\LLVM\bin
[kit] Scanning directory C:\Windows\system32 for compilers
[kit] Scanning directory C:\Program Files\AdoptOpenJDK\jdk-11.0.10.9-hotspot\bin for compilers
[kit] Scanning directory C:\Windows\System32\Wbem for compilers
[kit] Scanning directory C:\Windows for compilers
[kit] Scanning directory C:\Windows\System32\WindowsPowerShell\v1.0\ for compilers
[kit] Scanning directory C:\Program Files (x86)\Pico Technology\PicoScope6\ for compilers
[kit] Scanning directory C:\Windows\System32\OpenSSH\ for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Python\Python39\Scripts\ for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Python\Python39\ for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Python\Launcher\ for compilers
[kit] Scanning directory C:\Users\someuser\Apps\ripgrep for compilers
[kit] Scanning directory C:\Users\someuser\Apps\fd for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Microsoft\WindowsApps for compilers
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Git\cmd for compilers
[kit] Skipping scan of not existing path 
[kit] Scanning directory C:\Users\someuser\AppData\Local\Programs\Microsoft VS Code\bin for compilers
[kit] Scanning directory C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin for compilers
[kit] Scanning directory C:\Users\someuser\Apps\msys2\mingw64\bin for compilers
[kit] Found 0 kits in directory C:\Windows\System32\OpenSSH\
[kit] Found 0 kits in directory C:\Windows\System32\WindowsPowerShell\v1.0\
[kit] Found 0 kits in directory C:\Windows
[kit] Found 0 kits in directory C:\Windows\System32\Wbem
[kit] Found 0 kits in directory C:\Program Files\AdoptOpenJDK\jdk-11.0.10.9-hotspot\bin
[kit] Found 0 kits in directory C:\Program Files (x86)\Pico Technology\PicoScope6\
[kit] Found 0 kits in directory C:\Users\someuser\AppData\Local\Programs\Python\Python39\
[kit] Found 0 kits in directory C:\Users\someuser\AppData\Local\Programs\Python\Python39\Scripts\
[kit] Found 0 kits in directory C:\Users\someuser\Apps\ripgrep
[kit] Found 0 kits in directory C:\Users\someuser\AppData\Local\Programs\Python\Launcher\
[kit] Found 0 kits in directory C:\Users\someuser\AppData\Local\Programs\Microsoft VS Code\bin
[kit] Found 0 kits in directory C:\Users\someuser\Apps\fd
[kit] Found 0 kits in directory C:\Users\someuser\AppData\Local\Microsoft\WindowsApps
[kit] Found 0 kits in directory C:\Users\someuser\AppData\Local\Programs\Git\cmd
[kit] Testing GCC binary: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\gcc.exe
[kit] Testing GCC binary: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\gcc.exe
[proc] Executing command: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\gcc.exe -v
[kit] Testing GCC binary: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc-4.9.4.exe
[kit] Testing GCC binary: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc-4.9.4.exe
[proc] Executing command: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc-4.9.4.exe -v
[kit] Testing GCC binary: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc.exe
[kit] Testing GCC binary: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc.exe
[proc] Executing command: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc.exe -v
[kit] Testing Clang binary: C:\Users\someuser\Apps\msys2\mingw64\bin\clang.exe
[kit] Testing Clang binary: C:\Users\someuser\Apps\msys2\mingw64\bin\clang.exe
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\clang.exe -v
[kit] Testing GCC binary: C:\Users\someuser\Apps\msys2\mingw64\bin\gcc.exe
[kit] Testing GCC binary: C:\Users\someuser\Apps\msys2\mingw64\bin\gcc.exe
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\gcc.exe -v
[kit] Testing GCC binary: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc-10.3.0.exe
[kit] Testing GCC binary: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc-10.3.0.exe
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc-10.3.0.exe -v
[kit] Testing GCC binary: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc.exe
[kit] Testing GCC binary: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc.exe
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc.exe -v
[kit] Testing Clang binary: C:\Users\someuser\Apps\msys2\mingw64\bin\clang-cl.exe
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\clang-cl.exe -v
[kit] Testing Clang binary: C:\Users\someuser\Apps\msys2\mingw64\bin\clang.exe
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\clang.exe -v
[kit] Found 0 kits in directory C:\Windows\system32
[kit] Detected GCC compiler: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc-4.9.4.exe
[kit] Detected GCC compiler: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\gcc.exe
[kit] Bad Clang binary "C:\Users\someuser\Apps\msys2\mingw64\bin\clang.exe -v" version:12.0.0 output: clang version 12.0.0
Target: x86_64-w64-windows-gnu
Thread model: posix
InstalledDir: C:/Users/someuser/Apps/msys2/mingw64/bin

[kit] Detected Clang compiler: C:\Users\someuser\Apps\msys2\mingw64\bin\clang-cl.exe
[kit] Detected GCC compiler: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc.exe
[kit] Detected GCC compiler: C:\Users\someuser\Apps\msys2\mingw64\bin\gcc.exe
[kit] Detected GCC compiler: C:\Users\someuser\Apps\msys2\mingw64\bin\x86_64-w64-mingw32-gcc-10.3.0.exe
[kit] Bad Clang binary "C:\Users\someuser\Apps\msys2\mingw64\bin\clang.exe -v" version:12.0.0 output: clang version 12.0.0
Target: x86_64-w64-windows-gnu
Thread model: posix
InstalledDir: C:/Users/someuser/Apps/msys2/mingw64/bin

[kit] Detected GCC compiler: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\i686-w64-mingw32-gcc.exe
[proc] Executing command: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\mingw32-make.exe -v
[proc] Executing command: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\mingw32-make.exe -v
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\mingw32-make.exe -v
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\mingw32-make.exe -v
[proc] Executing command: C:\Users\someuser\Apps\msys2\mingw64\bin\mingw32-make.exe -v
[proc] Executing command: C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin\mingw32-make.exe -v
[kit] Found 3 kits in directory C:\Users\someuser\Apps\msys2\mingw64\bin
[kit] Found 3 kits in directory C:\Users\someuser\Workspace\toolchain\mingw\i686-4.9.4-posix-dwarf-rt_v5-rev0\mingw32\bin
[kit] Found Kit: GCC 4.9.4 i686-w64-mingw32
[kit] Found Kit: GCC 4.9.4 i686-w64-mingw32
[kit] Found Kit: GCC 4.9.4 i686-w64-mingw32
[kit] Found Kit: GCC 10.3.0 x86_64-w64-mingw32
[kit] Found Kit: GCC 10.3.0 x86_64-w64-mingw32
[kit] Found Kit: GCC 10.3.0 x86_64-w64-mingw32
[kitsController] Saving kits to C:\Users\someuser\AppData\Local\CMakeTools\cmake-tools-kits.json
[kitsController] Saving new kits to C:\Users\someuser\AppData\Local\CMakeTools\cmake-tools-kits.json
[extension] [1085] cmake.selectKit finished (returned false)
[kit] Reading kits file C:\Users\someuser\AppData\Local\CMakeTools\cmake-tools-kits.json
[kit] Successfully loaded 3 kits from C:\Users\someuser\AppData\Local\CMakeTools\cmake-tools-kits.json
[extension] [1740] cmake.editKits started
[extension] Opening text editor for C:\Users\someuser\AppData\Local\CMakeTools\cmake-tools-kits.json
[extension] [1740] cmake.editKits finished (returned {"document":{"uri":{"$mid":1,"fsPath":"c:\\Users\\someuser\\AppData\\Local\\CMakeTools\\cmake-tools-kits.json","_sep":1,"external":"file:///c%3A/Users/someuser/AppData/Local/CMakeTools/cmake-tools-kits.json","path":"/c:/Users/someuser/AppData/Local/CMakeTools/cmake-tools-kits.json","scheme":"file"},"fileName":"c:\\Users\\someuser\\AppData\\Local\\CMakeTools\\cmake-tools-kits.json","isUntitled":false,"languageId":"json","version":1,"isClosed":false,"isDirty":false,"eol":1,"lineCount":32},"selection":{"start":{"line":18,"character":7},"end":{"line":18,"character":21},"active":{"line":18,"character":21},"anchor":{"line":18,"character":7}},"selections":[{"start":{"line":18,"character":7},"end":{"line":18,"character":21},"active":{"line":18,"character":21},"anchor":{"line":18,"character":7}}],"visibleRanges":[[{"line":0,"character":0},{"line":31,"character":1}]],"options":{"tabSize":2,"insertSpaces":true,"cursorStyle":1,"lineNumbers":1},"viewColumn":1})

Developer Tools Log

<!-- Paste the log contents HERE -->

Platform and Versions

• Operating System: Windows 10
• CMake Version: 3.20.3 from msys2
• VSCode Version: 1.56.2
• CMake Tools Extension Version: 1.7.3
• Compiler/Toolchain: MSYS2 (using both ming64 and clang toolchains)

Other Notes/Information

This is clang version reported:

$ clang -v
clang version 12.0.0
Target: x86_64-w64-windows-gnu
Thread model: posix
InstalledDir: C:/Users/someuser/Apps/msys2/mingw64/bin

[NoMore201]

Did some debugging, apparently function parseTargetTriple returns undefined here:

vscode-cmake-tools/src/triple.ts

Lines 161 to 169 in c93c1a7

	for (const key of Object.keys(TriplePossibleLibC)) {
	const libcReg = TriplePossibleLibC[key];
	if (libcReg.exec(tripleElement) !== null) {
	elementToSkip.push(tripleElement);
	if (foundLibc === "unknow") {
	foundLibc = key;
	} else if (foundLibc !== key) {
	return undefined;
	}

Local variables have the following values:

• tripleElement: gnu
• key: glibc
• foundLibc: mingw

What happens (If i got it correclty) is that w64 string in triple gets matched to regex at key mingw, so foundLibc = mingw.
Later, gnu string in triple gets matched to regex at key glibc, but foundLibc was assigned before so function returns undefined.

[bobbrow]

@lygstate your PR #1337 added support for the target triplets. Is this something you can help fix?

[lygstate]

@lygstate your PR #1337 added support for the target triplets. Is this something you can help fix?

OK easy to fix