[docs] Improve some information about local builds of libReactant #1396
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
giordano
commented
Jun 12, 2025
Comment on lines
+87
to
+98
| To speed up recompilation you can use [ccache](https://ccache.dev/). | ||
| You can use ccache on top of Bazel's own caching system, which is very inflexible: Bazel invalidates cache whenever you change any variable, leading to poor cache hit rate when recompiling code with different options, even if they don't actually affect compilation output. | ||
| Since [Bazel interacts badly with ccache](https://github.com/ccache/ccache/discussions/1279) when the latter [masquerades itself as the compiler via symlinks](https://ccache.dev/manual/4.11.3.html#_run_modes), the most reliable way to use ccache with Bazel is to create a small shell wrapper like | ||
|
|
||
| ```bash | ||
| #!/bin/bash | ||
| /path/to/ccache /path/to/your/compiler "${@}" | ||
| ``` | ||
|
|
||
| replacing `/path/to/ccache` with the path where ccache was installed, and `/path/to/your/compiler` with the path of your compiler. | ||
| Then inform Bazel to use this script as the compiler (with the `build_local.jl` script add the flag `--cc /path/to/ccache/wrapper`, where `/path/to/ccache/wrapper` is the path where you saved the shell wrapper). | ||
| Finally, you may have to add the flag `--extraopt "--sandbox_writable_path=/path/to/ccache/directory"`, otherwise Bazel will not let `ccache` write the cache output to its own directory. |
There was a problem hiding this comment.
I think this is the most comprehensive piece of documentation about using ccache with bazel that you can find anywhere on the internet 😁
wsmoses
approved these changes
Jun 12, 2025
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #1396 +/- ##
===========================================
+ Coverage 21.66% 37.79% +16.12%
===========================================
Files 46 115 +69
Lines 8048 20866 +12818
===========================================
+ Hits 1744 7886 +6142
- Misses 6304 12980 +6676 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
|
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.