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Editing: BuildCaching.md
## Build caching (ccache) Set this environment variable to make our build system prefix all compiler invocations with [ccache](https://ccache.dev/): ```bash export USE_CCACHE=1 ``` You also need: ```bash # Required for caching test files (involves precompiled headers) export CCACHE_SLOPPINESS=pch_defines,time_macros ``` When using multiple worktrees, configure cache sharing: ```bash export CCACHE_BASEDIR=<full path to common parent directory of the worktrees> # Prevent debug info from distinguishing between worktrees export EXTRA_CFLAGS=-fdebug-prefix-map="$PWD"=. export EXTRA_CXXFLAGS=-fdebug-prefix-map="$PWD"=. ```
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