From 7ddc400d6232259e9acc6e09cd77c9a6f758e030 Mon Sep 17 00:00:00 2001
From: Hamza <theComputeKid@gmail.com>
Date: Wed, 8 Jan 2025 12:41:17 +0000
Subject: [PATCH] fix: remove clang-cl compilation warning (#1895)

- MP flag only applies to cl, not cl frontends to other compilers (e.g. clang-cl, icx-cl etc).

Co-authored-by: dominic <510002+dmah42@users.noreply.github.com>
---
 CMakeLists.txt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f045fcd84..fd6906040 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -147,7 +147,12 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 if (MSVC)
   # Turn compiler warnings up to 11
   string(REGEX REPLACE "[-/]W[1-4]" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4 /MP")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
+
+  # MP flag only applies to cl, not cl frontends to other compilers (e.g. clang-cl, icx-cl etc)
+  if(CMAKE_CXX_COMPILER_ID MATCHES MSVC)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
+  endif()
   add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 
   if(BENCHMARK_ENABLE_WERROR)