doc: fix macOS environment variables for ccache

macOS requires `cc` and `c++` rather than `gcc` and `g++`. Closes: nodejs#40542 PR-URL: nodejs#40550 Fixes: nodejs#40542 Reviewed-By: Geoffrey Booth <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Luigi Pinca <[email protected]>
Trott · Oct 24, 2021 · edd716b · edd716b
1 parent 40d890d
commit edd716b
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/BUILDING.md b/BUILDING.md
@@ -519,6 +519,8 @@ $ make test-only
 If you plan to frequently rebuild Node.js, especially if using several branches,
 installing `ccache` can help to greatly reduce build times. Set up with:
 
+On GNU/Linux:
+
 ```console
 $ sudo apt install ccache   # for Debian/Ubuntu, included in most Linux distros
 $ ccache -o cache_dir=<tmp_dir>
@@ -527,6 +529,16 @@ $ export CC="ccache gcc"    # add to your .profile
 $ export CXX="ccache g++"   # add to your .profile
 ```
 
+On macOS:
+
+```console
+$ brew install ccache      # see https://brew.sh
+$ ccache -o cache_dir=<tmp_dir>
+$ ccache -o max_size=5.0G
+$ export CC="ccache cc"    # add to ~/.zshrc or other shell config file
+$ export CXX="ccache c++"  # add to ~/.zshrc or other shell config file
+```
+
 This will allow for near-instantaneous rebuilds even when switching branches.
 
 When modifying only the JS layer in `lib`, it is possible to externally load it