Failed recompaction error in add_custom_command

Code
,
1

Hi,

I’m using following code to automatically create a dependency graph during build

    add_custom_command(
        OUTPUT ${CMAKE_BINARY_DIR}/_graphviz
        COMMAND ${CMAKE_COMMAND} "--graphviz=graphviz/deps.dot" .
        COMMAND dot -Tsvg graphviz/deps.dot -o deps.svg
        COMMAND dot -Tpng graphviz/deps.dot -o deps.png
        COMMENT "Plotting dependencies graph to deps.svg"
        DEPENDS firmware
        WORKING_DIRECTORY "${CMAKE_BINARY_DIR}")
    add_custom_target(graphviz ALL
        DEPENDS ${CMAKE_BINARY_DIR}/_graphviz)

It cause the following error:

[build] FAILED: _graphviz C:/git/x/build/debug/_graphviz 
[build] C:\WINDOWS\system32\cmd.exe /C "cd /D C:\git\x\build\debug && C:\msys64\mingw64\bin\cmake.exe --graphviz=graphviz/deps.dot . && dot -Tsvg graphviz/deps.dot -o deps.svg && dot -Tpng graphviz/deps.dot -o deps.png"
[build] -- Configuring done (1.3s)
[build] -- Generating done (4.8s)
[build] CMake Error:
[build]   Running
[build] 
[build]    'C:/msys64/mingw64/bin/ninja.exe' '-C' 'C:/git/x/build/debug' '-t' 'recompact'
[build] 
[build]   failed with:
[build] 
[build]    ninja: error: failed recompaction: Permission denied
[build] 
[build] 
[build] 
[build] CMake Error:
[build]   Running
[build] 
[build]    'C:/msys64/mingw64/bin/ninja.exe' '-C' 'C:/git/x/build/debug' '-t' 'restat' 'build.ninja'
[build] 
[build]   failed with:
[build] 
[build]    ninja: error: failed recompaction: Permission denied
[build] 
[build] 
[build] 
[build] Generate graphviz: C:/git/x/build/debug/graphviz/deps.dot
[build] CMake Generate step failed.  Build files cannot be regenerated correctly.
[build] ninja: build stopped: subcommand failed.

The error is caused by the call of ${CMAKE_COMMAND}.

How to fix it?
Is there a better way to generate the dependency graph during configuration. e.g. implicit --graphviz option?

2

By searching on Google, I saw some issues with the same error.
Maybe you should give your environment (espacially your CMake release).

3

Yes, I have also seen forum posts regarding recompaction errors, but mainly some old related to logging, which should be fixed.

I’m developing on Windows 11, with MSYS/MINGW64 environment and I’m using VSCode. CMake version is 3.29.2

Besides this problem with the recompaction error, actually my goal is to create dependency graph during configuration. I have not found a possibility to enable graphviz when using profiles. So this is a workaround to call cmake recursively just for the purpose of the graph.

4

It seems like there’s something that is preventing ninja from performing recompaction. Has the build been interacted with as a different user at any point? Could something else be poking the tree somehow?