[Bug] @command:cmake.compileFile calls compiler with missing include directories

[roelandschoukens]

Brief Issue Summary

If using this command, the compilation almost always fails due to headers not found.

• in the terminal called File Compilation, the command line is missing some include paths which are specified in the CMake file.
• CMake Tools Diagnostics may contain requests and responses for open source files. These responses appear to contain the correct set of include paths. (there are definitely include paths in these responses that are missing in the command line)
• compile_commands.json also contains the correct command line.

There is always a short chunk of the command line missing at offset 1024. The size of that chunk appears to be constant, independently from total command length.

The attached example reproduces this problem.

Full command line as issued by the compileFile command (for clarity, spaces have been replaced by newlines):

/usr/bin/clang++

-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-1
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-2
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-3
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-4
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-5
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-6
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-7
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-8
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-direry/include-directory-nr-12
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-13
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-14
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-15
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-16
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-17
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-18
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-19
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-20
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-21
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-22
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-23
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-24
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-25
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-26
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-27
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-28
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-29
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-30
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-31
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-32
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-33
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-34
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-35
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-36
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-37
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-38
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-39
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-40
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-41
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-42
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-43
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-44
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-45
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-46
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-47
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-48
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-49
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-50
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-51
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-52
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-53
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-54
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-55
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-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-62
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-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-70
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-71
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-72
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-73
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-74
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-75
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-76
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-77
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-78
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-79
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-80
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-81
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-82
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-83
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-84
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-85
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-86
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-87
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-88
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-89
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-90
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-91
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-92
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-93
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-94
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-95
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-96
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-97
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-98
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-99
-I/Users/roeland/Documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-100
-g
-std=c++17
-arch
arm64
-o
CMakeFiles/Test.dir/src/main.cpp.o
-c
/Users/roeland/Documents/test/cmake-long-command/src/main.cpp

CMake Tools Diagnostics

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            "/users/roeland/documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-85",
            "/users/roeland/documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-86",
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            "/users/roeland/documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-92",
            "/users/roeland/documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-93",
            "/users/roeland/documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-94",
            "/users/roeland/documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-95",
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            "/users/roeland/documents/test/cmake-long-command/some-long-path-to-an-include-directory/include-directory-nr-100"
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          "defines": [],
          "compilerPath": "/usr/bin/clang++",
          "compilerArgs": [],
          "compilerFragments": [
            "-g -std=c++17 -arch arm64"
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    "targetCount": 1,
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      "communicationMode": "automatic",
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}

Debug Log

[main] Building folder: /Users/roeland/Documents/test/cmake-long-command/build/vscodebuild 
[main] Saving open files before configure/build
[build] Starting build
[driver] Start build all
[proc] Executing command: /opt/homebrew/bin/cmake --build /Users/roeland/Documents/test/cmake-long-command/build/vscodebuild --config Debug --target all -j 12 --
[proc]   with environment: {"COMMAND_MODE":"unix2003","EDITOR":"/usr/bin/open -n -W -a /System/Applications/TextEdit.app","ELECTRON_NO_ATTACH_CONSOLE":"1","HOME":"/Users/roeland","HOMEBREW_CELLAR":"/opt/homebrew/Cellar","HOMEBREW_PREFIX":"/opt/homebrew","HOMEBREW_REPOSITORY":"/opt/homebrew","INFOPATH":"/opt/homebrew/share/info:","LANG":"en_US.UTF-8","LC_ALL":"en_US.UTF-8","LOGNAME":"roeland","LaunchInstanceID":"6EC7ACA2-01EC-427A-82CF-F87D01AD35AA","MallocNanoZone":"0","ORIGINAL_XDG_CURRENT_DESKTOP":"undefined","PATH":"/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/usr/local/share/dotnet:~/.dotnet/tools:/Library/Frameworks/Mono.framework/Versions/Current/Commands:~/bin:~/Library/Python/3.11/bin:/Users/roeland/.dotnet/tools","PWD":"/Users/roeland/Documents/test/cmake-long-command","SECURITYSESSIONID":"186a2","SHELL":"/bin/zsh","SHLVL":"2","SSH_AUTH_SOCK":"/private/tmp/com.apple.launchd.rYYzprqcpr/Listeners","TERM":"xterm-256color","TERM_PROGRAM":"Apple_Terminal","TERM_PROGRAM_VERSION":"455.1","TERM_SESSION_ID":"CE7E737F-802F-48E9-871A-B74F3DB21E58","TMPDIR":"/var/folders/n4/dfmgtl1d4kd_knxs3qpp3hbh0000gn/T/","USER":"roeland","VSCODE_CLI":"1","VSCODE_CODE_CACHE_PATH":"/Users/roeland/Library/Application Support/Code/CachedData/848b80aeb52026648a8ff9f7c45a9b0a80641e2e","VSCODE_CRASH_REPORTER_PROCESS_TYPE":"extensionHost","VSCODE_CWD":"/Users/roeland/Documents/test/cmake-long-command","VSCODE_ESM_ENTRYPOINT":"vs/workbench/api/node/extensionHostProcess","VSCODE_HANDLES_UNCAUGHT_ERRORS":"true","VSCODE_IPC_HOOK":"/Users/roeland/Library/Application Support/Code/1.10-main.sock","VSCODE_NLS_CONFIG":"{\"userLocale\":\"en-gb\",\"osLocale\":\"en-nz\",\"resolvedLanguage\":\"en\",\"defaultMessagesFile\":\"/Applications/Visual Studio Code.app/Contents/Resources/app/out/nls.messages.json\",\"locale\":\"en-gb\",\"availableLanguages\":{}}","VSCODE_PID":"33199","XPC_FLAGS":"0x0","XPC_SERVICE_NAME":"application.com.microsoft.VSCode.18633455.18633461.630A16E7-C626-488E-B3AD-F5AAA156EF92","__CFBundleIdentifier":"com.microsoft.VSCode","__CF_USER_TEXT_ENCODING":"0x1F5:0x0:0x0","ELECTRON_RUN_AS_NODE":"1","VSCODE_L10N_BUNDLE_LOCATION":"","NINJA_STATUS":"[%s/%t %p :: %e] "}
[build] [ 50%] Building CXX object CMakeFiles/Test.dir/src/main.cpp.o
[build] [100%] Linking CXX executable Test
[build] [100%] Built target Test
[driver] Build completed: 00:00:00.166
[cmakefileapi-parser] Read reply folder: /Users/roeland/Documents/test/cmake-long-command/build/vscodebuild/.cmake/api/v1/reply
[cmakefileapi-parser] Found index files: ["cache-v2-094082456bbcbeb684f0.json","cmakeFiles-v1-911fec475635ee04139b.json","codemodel-v2-e4e2fa5e5831fec6a18d.json","directory-.-Debug-f5ebdc15457944623624.json","index-2025-05-27T23-19-20-0251.json","target-Test-Debug-b32381d508061311d544.json","toolchains-v1-d5d1f33019f757832e22.json"]
[expand] expanded ${workspaceFolder}/build/vscodebuild
[cache] Reading CMake cache file /Users/roeland/Documents/test/cmake-long-command/build/vscodebuild/CMakeCache.txt
[build] Build finished with exit code 0
[cache] Parsing CMake cache string
[extension] [5391] cmake.build finished (returned 0)

Additional Information

cmake-long-command.zip

[Amy-Li03]

Hi @roelandschoukens, thank you for the reporting!

Verified this on CMake Tools v1.20.53(release) and v1.21.28(pre-release), after run command CMake:Compiler Active File, in the File Compilation terminal window, some include paths are missing which are specified in the CMakeLists.txt file. (compile_commands.json contains the correct command line)

Whether this is your issue? If not, please correct us. Thank you!

Repro Steps Video:
Repro.zip
(it's too big to upload as gif, so compress it as zip)

[roelandschoukens]

@Amy-Li03 You have a slightly different failure, in your case the command appears to be truncated, in my case the command seems to be missing a part in the middle. But anyway it is unable to issue long build commands correctly.

If you press up in the terminal, you can copy/paste the command as text. In the command output I got above there is a chunk missing after where it adds directory-nr-8.

[Amy-Li03]

@roelandschoukens Yes, in my case the command was truncated.
We will investigate this issue and thank you for help us build a better CMake Tools!