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Documentation: Update description of "Unable to find ninja" error

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Unlike the current FAQ entry, this error really never involves having to
uninstall/reinstall Ninja or invoking it directly.
This commit is contained in:
Timothy Flynn 2024-10-08 09:04:58 -04:00 committed by Jelle Raaijmakers
parent cb21201550
commit de1475f99a
Notes: github-actions[bot] 2024-10-08 14:35:05 +00:00 
Author: https://github.com/trflynn89
Commit: https://github.com/LadybirdBrowser/ladybird/commit/de1475f99a0
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1680
1 changed files with 19 additions and 7 deletions
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26
Documentation/BuildInstructionsLadybird.md
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@ -216,17 +216,29 @@ The section lists out some particular error messages you may run into, and expla
#### Unable to find a build program corresponding to "Ninja"
Solution to try: If you do in fact already have Ninja installed, then first try reinstalling Ninja.
Details: If you see the message *“Unable to find a build program corresponding to "Ninja"”*, it’s likely not an indication that the build tooling can’t actually find Ninja, but instead an indication that the tooling found Ninja but it failed to run successfully.
So, when you do run into that error message, the way to start figuring out what’s actually wrong is to try invoking Ninja manually, like this:
This error message is a red herring. We use vcpkg to manage our third-party dependencies, and this error is logged when
something went wrong building those dependencies. The output in your terminal will vary depending on what exactly went
wrong, but it should look something like:
```
ninja -C Build/ladybird
error: building skia:x64-linux failed with: BUILD_FAILED
Elapsed time to handle skia:x64-linux: 1.6 s
-- Running vcpkg install - failed
CMake Error at Toolchain/Tarballs/vcpkg/scripts/buildsystems/vcpkg.cmake:899 (message):
vcpkg install failed. See logs for more information:
Build/ladybird/vcpkg-manifest-install.log
Call Stack (most recent call first):
/usr/share/cmake-3.30/Modules/CMakeDetermineSystem.cmake:146 (include)
CMakeLists.txt:15 (project)
CMake Error: CMake was unable to find a build program corresponding to "Ninja". CMAKE_MAKE_PROGRAM is not set. You probably need to select a different build tool.
-- Configuring incomplete, errors occurred! See logs for more information:
Build/ladybird/vcpkg-manifest-install.log
```
Then, based on what output you get from that, you can troubleshoot the *actual* problem you’re running into — which may involve uninstalling your current Ninja install, and then re-installing it.
If the error is not immediately clear from the terminal output, be sure to check `Build/ladybird/vcpkg-manifest-install.log`
for more information.
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