From 53eeeab0e39a9079324f8aad39a6ca0f446030e1 Mon Sep 17 00:00:00 2001
From: Cosimo Lupo <clupo@google.com>
Date: Wed, 6 Apr 2022 12:54:40 +0100
Subject: [PATCH] CMakeLists.txt: also match 'AppleClang' compiler to not link
 with libc++

---
 CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3259ca90c..9a1d9032f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -462,7 +462,9 @@ if (UNIX OR MINGW)
     link_libraries(-Bsymbolic-functions)
   endif ()
 
-  if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+  # As of CMake 3.0.0, the compiler id for Apple-provided Clang is now "AppleClang";
+  # thus we use MATCHES instead of STREQUAL to include either regular Clang or AppleClang
+  if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     # Make sure we don't link to libstdc++
     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti -fno-exceptions")
     set (CMAKE_CXX_IMPLICIT_LINK_LIBRARIES "m") # libm