doc: improve ccache explanation

ccache improves the build speed significantly only when the branch was built before. Building fresh branches with major changes are not benefited from ccache. PR-URL: nodejs#50133 Fixes: nodejs#49967 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Michaël Zasso <[email protected]>
kumarrishav · Oct 16, 2023 · 1634f15 · 1634f15
1 parent 9f947c8
commit 1634f15
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/BUILDING.md b/BUILDING.md
@@ -543,7 +543,8 @@ 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.
+This will allow for near-instantaneous rebuilds when switching branches back
+and forth that were built with cache.
 
 When modifying only the JS layer in `lib`, it is possible to externally load it
 without modifying the executable: