### Author:  [@claremacrae](https://discourse.cmake.org/u/claremacrae)
#### Post date: [December 1, 2021, 1:12pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/1 "2021-12-01T13:12:55Z")
My cmake builds on GitHub Actions with Cygwin have recently started timing out at 6 hours, when they used to take 10 minutes or so.
I’ve been looking at it, and the difference in output is:
last working build:
```auto
2021-10-27T01:22:00.2370158Z /home/runneradmin
2021-10-27T01:22:00.7132038Z -- The C compiler identification is GNU 11.2.0
2021-10-27T01:22:01.1511976Z -- The CXX compiler identification is GNU 11.2.0
2021-10-27T01:22:01.3345115Z -- Detecting C compiler ABI info
2021-10-27T01:22:01.4569110Z -- Detecting C compiler ABI info - failed
2021-10-27T01:22:01.4579158Z -- Check for working C compiler: /usr/bin/cc
2021-10-27T01:22:01.8781617Z -- Check for working C compiler: /usr/bin/cc - works
```
First failing build:
```auto
2021-10-31T11:02:09.8670109Z /home/runneradmin
2021-10-31T11:02:10.4093577Z -- The C compiler identification is GNU 11.2.0
2021-10-31T11:02:10.9970469Z -- The CXX compiler identification is GNU 11.2.0
2021-10-31T11:02:11.2962653Z -- Detecting C compiler ABI info
2021-10-31T16:58:56.5710031Z ##[error]The operation was canceled.
2021-10-31T16:58:56.6550538Z Post job cleanup.
```
So the Cmake step “Detecting C compiler ABI info” is never completing.
I’ve logged details in this issue in my project - with links to build logs:
>
>
> Since 2021-10-31T10:58:43, the Cygwin GitHub Actions build has been timing out a…fter 6 hours.
>
> The 2021-10-27T01:19:06 build worked fine.
>
> \- \[logs: last working build\](https://github.com/approvals/ApprovalTests.cpp/runs/4016919382?check\_suite\_focus=true)
> - 2021-10-27T01:19:06
> \- \[logs: first failure\](https://github.com/approvals/ApprovalTests.cpp/runs/4059649103?check\_suite\_focus=true)
> - 2021-10-31T10:58:43
>
> The key problem output is:
>
> \`\`\`
> /home/runneradmin
> \-- The C compiler identification is GNU 11.2.0
> \-- The CXX compiler identification is GNU 11.2.0
> \-- Detecting C compiler ABI info
> Error: The operation was canceled.
> \`\`\`
Cmake is run with:
```bash
cmake -G 'Unix Makefiles' .. -DCMAKE_BUILD_TYPE=Release --log-level=VERBOSE
```
The output, in a branch where I have disabled most of the project to get faster feedback, [currently is giving](https://github.com/approvals/ApprovalTests.cpp/runs/4381635404?check_suite_focus=true):
```auto
cmake version 3.20.0
CMake suite maintained and supported by Kitware (kitware.com/cmake).
-- The C compiler identification is GNU 11.2.0
-- The CXX compiler identification is GNU 11.2.0
-- Detecting C compiler ABI info
Error: The operation was canceled.
```
What can I do to debug this problem, or has anyone seen it and already fixed it, please?
---
### Author:  [@fdk17](https://discourse.cmake.org/u/fdk17)
#### Post date: [December 1, 2021, 1:59pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/2 "2021-12-01T13:59:14Z")
This is how I would try to get more information if it was at my desk (not part of a CI build).
Delete the entire binary directory and start fresh. Then on the initial run use `--debug-trycompile`. This will keep all the project files for the `ABI info` and other tests.
Also the `CMakeFiles/CMakeError.log` file should capture the compiler output when the ABI test fails.
---
### Author:  [@claremacrae](https://discourse.cmake.org/u/claremacrae)
#### Post date: [December 1, 2021, 3:54pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/3 "2021-12-01T15:54:28Z")
Thank you very much!
I added the `--debug-trycompile` argument, but didn’t get any extra console output.
What I don’t understand is how, in a GitHub Actions job where the Cmake command hangs until the entire job times out, I can can examine the contents of any log files?
---
### Author:  [@claremacrae](https://discourse.cmake.org/u/claremacrae)
#### Post date: [December 1, 2021, 5:07pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/4 "2021-12-01T17:07:47Z")
I’m experimenting with timeout, to see if I can kill the cmake command and then print the logs
---
### Author:  [@fdk17](https://discourse.cmake.org/u/fdk17)
#### Post date: [December 1, 2021, 5:22pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/5 "2021-12-01T17:22:16Z")
The errors you’d see would not get printed to any output for capture. They get put directly into the `CMakeErrors.txt`. You could try `--trace-expand` and similar options. If your system capture standard error than there is a good chance you’ll get details on what is happening. `--trace-expand` will show in great detail the commands leading up to the point of error.
---
### Author:  [@claremacrae](https://discourse.cmake.org/u/claremacrae)
#### Post date: [December 1, 2021, 6:41pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/6 "2021-12-01T18:41:17Z")
Firstly, thank you very much for the help and suggestions!
There is no `CMakeErrors.txt` file created.
Here’s the more detailed output that I’ve managed to get - extracted from the [GitHub Actions build log](https://github.com/approvals/ApprovalTests.cpp/runs/4385119636?check_suite_focus=true):
```auto
2021-12-01T17:45:20.3495606Z /usr/share/cmake-3.20.0/Modules/CMakeDetermineCompilerABI.cmake(47): set(ENV{LANG} C )
2021-12-01T17:45:20.3496681Z Called from: [3] /usr/share/cmake-3.20.0/Modules/CMakeDetermineCompilerABI.cmake
2021-12-01T17:45:20.3497634Z [2] /usr/share/cmake-3.20.0/Modules/CMakeTestCCompiler.cmake
2021-12-01T17:45:20.3498487Z [1] /cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/CMakeLists.txt
2021-12-01T17:45:20.3501162Z /usr/share/cmake-3.20.0/Modules/CMakeDetermineCompilerABI.cmake(49): try_compile(CMAKE_C_ABI_COMPILED /cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/cmake-build /usr/share/cmake-3.20.0/Modules/CMakeCCompilerABI.c CMAKE_FLAGS -DEXE_LINKER_FLAGS=-v;-DCMAKE_C_STANDARD_LIBRARIES= --no-warn-unused-cli COMPILE_DEFINITIONS -v OUTPUT_VARIABLE OUTPUT COPY_FILE /cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/cmake-build/CMakeFiles/3.20.0/CMakeDetermineCompilerABI_C.bin COPY_FILE_ERROR _copy_error __CMAKE_INTERNAL ABI )
2021-12-01T17:45:20.3504057Z Called from: [3] /usr/share/cmake-3.20.0/Modules/CMakeDetermineCompilerABI.cmake
2021-12-01T17:45:20.3504991Z [2] /usr/share/cmake-3.20.0/Modules/CMakeTestCCompiler.cmake
2021-12-01T17:45:20.3505859Z [1] /cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/CMakeLists.txt
2021-12-01T17:45:20.3506596Z -- The CXX compiler identification is GNU 11.2.0
2021-12-01T17:45:20.3507424Z Called from: [3] /usr/share/cmake-3.20.0/Modules/CMakeDetermineCompilerId.cmake
2021-12-01T17:45:20.3508436Z [2] /usr/share/cmake-3.20.0/Modules/CMakeDetermineCXXCompiler.cmake
2021-12-01T17:45:20.3509374Z [1] /cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/CMakeLists.txt
2021-12-01T17:45:20.3510045Z -- Detecting C compiler ABI info
2021-12-01T17:45:20.3510789Z Called from: [3] /usr/share/cmake-3.20.0/Modules/CMakeDetermineCompilerABI.cmake
2021-12-01T17:45:20.3511725Z [2] /usr/share/cmake-3.20.0/Modules/CMakeTestCCompiler.cmake
2021-12-01T17:45:20.3512579Z [1] /cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/CMakeLists.txt
2021-12-01T17:45:27.3809111Z Timed out
2021-12-01T17:45:27.3810346Z ------------------------------------------------------------------------------------------------
2021-12-01T17:45:27.3811407Z executing: ls -ls
2021-12-01T17:45:27.4017530Z total 0
2021-12-01T17:45:27.4018900Z 0 drwxrwxr-x+ 1 runneradmin None 0 Dec 1 17:45 CMakeFiles
2021-12-01T17:45:27.4024270Z ------------------------------------------------------------------------------------------------
2021-12-01T17:45:27.4029426Z executing: ls -ls CMakeFiles/
2021-12-01T17:45:27.4225838Z total 12
2021-12-01T17:45:27.4227573Z 4 drwxrwxr-x+ 1 runneradmin None 0 Dec 1 17:45 3.20.0
2021-12-01T17:45:27.4229164Z 4 -rw-rw-r--+ 1 runneradmin None 861 Dec 1 17:45 CMakeOutput.log
2021-12-01T17:45:27.4230108Z 4 drwxrwxr-x+ 1 runneradmin None 0 Dec 1 17:45 CMakeTmp
2021-12-01T17:45:27.4230905Z ------------------------------------------------------------------------------------------------
2021-12-01T17:45:27.4240126Z executing: cat CMakeFiles/CMakeError.log
2021-12-01T17:45:27.4408741Z cat: CMakeFiles/CMakeError.log: No such file or directory
2021-12-01T17:45:27.4416542Z Cannot cat CMakeFiles/CMakeError.log
2021-12-01T17:45:27.4424273Z ------------------------------------------------------------------------------------------------
2021-12-01T17:45:27.4425612Z executing: cat CMakeFiles/CMakeFiles/CMakeOutput.log
2021-12-01T17:45:27.4570327Z The system is: CYGWIN - 3.3.2(0.341/5/3) - x86_64
2021-12-01T17:45:27.4571683Z Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded.
2021-12-01T17:45:27.4573297Z Compiler: /usr/bin/cc.exe
2021-12-01T17:45:27.4576211Z Build flags:
2021-12-01T17:45:27.4579178Z Id flags:
2021-12-01T17:45:27.4580291Z
2021-12-01T17:45:27.4585383Z The output was:
2021-12-01T17:45:27.4588410Z 0
2021-12-01T17:45:27.4588756Z
2021-12-01T17:45:27.4589054Z
2021-12-01T17:45:27.4589772Z Compilation of the C compiler identification source "CMakeCCompilerId.c" produced "a.exe"
2021-12-01T17:45:27.4590414Z
2021-12-01T17:45:27.4591367Z The C compiler identification is GNU, found in "/cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/cmake-build/CMakeFiles/3.20.0/CompilerIdC/a.exe"
2021-12-01T17:45:27.4592218Z
2021-12-01T17:45:27.4593053Z Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" succeeded.
2021-12-01T17:45:27.4593885Z Compiler: /usr/bin/c++.exe
2021-12-01T17:45:27.4594355Z Build flags:
2021-12-01T17:45:27.4594946Z Id flags:
2021-12-01T17:45:27.4595253Z
2021-12-01T17:45:27.4595659Z The output was:
2021-12-01T17:45:27.4596038Z 0
2021-12-01T17:45:27.4596319Z
2021-12-01T17:45:27.4596598Z
2021-12-01T17:45:27.4597366Z Compilation of the CXX compiler identification source "CMakeCXXCompilerId.cpp" produced "a.exe"
2021-12-01T17:45:27.4598063Z
2021-12-01T17:45:27.4599011Z The CXX compiler identification is GNU, found in "/cygdrive/d/a/ApprovalTests.cpp/ApprovalTests.cpp/cmake-build/CMakeFiles/3.20.0/CompilerIdCXX/a.exe"
2021-12-01T17:45:27.4599879Z
2021-12-01T17:45:27.4601530Z ------------------------------------------------------------------------------------------------
```
---
### Author:  [@fdk17](https://discourse.cmake.org/u/fdk17)
#### Post date: [December 1, 2021, 10:54pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/7 "2021-12-01T22:54:08Z")
It looks like CMake is hanging in the middle of the `try_compile` at `2021-12-01T17:45:20.3501162Z`.
What’s confusing to me is the `Called from:` lines from `2021-12-01T17:45:20.3507424Z ` and later.
They don’t show what CMake command is being executed! The output `-- The CXX compiler identification is GNU 11.2.0` and `-- Detecting C compiler ABI info` are from message commands well before the `try_compile` command.
When `try_compile` runs its given an infinite timeout when spawning the build tool to build the project. I think the build tool console output gets redirected back to CMake so we cannot see what goes wrong.
The `timeout 10 cmake ...` invocation prints the “Timed out” message.
But this explains why you don’t get a `CMakeError.log` file. CMake doesn’t generate an error until after returning from a failed `try_compile`.
@craig.scott Any suggestions?
---
### Author:  [@fdk17](https://discourse.cmake.org/u/fdk17)
#### Post date: [December 1, 2021, 10:56pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/8 "2021-12-01T22:56:44Z")
All that being said. If you use `find` you should see the project that CMake generates for the `try_compile`. You should be able to run `make` in that directory and see if it can build the project or if `make` is the program that is hanging.
---
### Author:  [@claremacrae](https://discourse.cmake.org/u/claremacrae)
#### Post date: [December 1, 2021, 11:47pm UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/9 "2021-12-01T23:47:31Z")
Brilliant idea - I’ll add steps to list the contents of the directory where try\_compile is run, and go from there…
---
### Author:  [@lermy3d](https://discourse.cmake.org/u/lermy3d)
#### Post date: [June 2, 2024, 7:43am UTC](https://discourse.cmake.org/t/how-to-debug-detecting-c-compiler-abi-info-hanging-cygwin-on-github-actions/4580/10 "2024-06-02T07:43:54Z")
Hi! I am having the same problem while trying to build the config for the AWS C++ SDK, how did the issue got resolved? Thank you in advance!