chore: add parallelism fallback for macOS on build (#4647)

1 less thing to think about. --------- Co-authored-by: Sebastian Ullrich <[email protected]>
leanprover · Aug 8, 2024 · 6dd5023 · 6dd5023
1 parent bcbd729
commit 6dd5023
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/doc/make/index.md b/doc/make/index.md
@@ -27,9 +27,9 @@ Setting up a basic parallelized release build:
 git clone https://github.com/leanprover/lean4
 cd lean4
 cmake --preset release
-make -C build/release -j$(nproc)  # see below for macOS
+make -C build/release -j$(nproc || sysctl -n hw.logicalcpu)
 ```
-You can replace `$(nproc)`, which is not available on macOS and some alternative shells, with the desired parallelism amount.
+You can replace `$(nproc || sysctl -n hw.logicalcpu)` with the desired parallelism amount.
 
 The above commands will compile the Lean library and binaries into the
 `stage1` subfolder; see below for details.