From bdca7376fd9f800f57b2ee17d95af3b327baa332 Mon Sep 17 00:00:00 2001
From: Thomas Hatzopoulos <thatzopoulos965@gmail.com>
Date: Sun, 1 May 2022 20:49:45 -0500
Subject: [PATCH] updated error message for missing cmake

---
 src/bootstrap/sanity.rs | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/bootstrap/sanity.rs b/src/bootstrap/sanity.rs
index c96e6f9a3678f..64c5dd7aea720 100644
--- a/src/bootstrap/sanity.rs
+++ b/src/bootstrap/sanity.rs
@@ -94,7 +94,18 @@ pub fn check(build: &mut Build) {
             .any(|build_llvm_ourselves| build_llvm_ourselves);
     let need_cmake = building_llvm || build.config.any_sanitizers_enabled();
     if need_cmake {
-        cmd_finder.must_have("cmake");
+        if cmd_finder.maybe_have("cmake").is_none() {
+            eprintln!(
+                "
+Couldn't find required command: cmake
+
+You should install cmake, or set `download-ci-llvm = true` in the
+`[llvm]` section section of `config.toml` to download LLVM rather
+than building it.
+"
+            );
+            std::process::exit(1);
+        }
     }
 
     build.config.python = build