From 93c389cefe38b0761dfde405bc5c51f129e0fe1f Mon Sep 17 00:00:00 2001
From: Lars Bilke <lars.bilke@ufz.de>
Date: Thu, 26 Aug 2021 14:49:27 +0200
Subject: [PATCH] [CMake] Disable -march flag on Apple ARM processors.
---
scripts/cmake/CompilerSetup.cmake | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/scripts/cmake/CompilerSetup.cmake b/scripts/cmake/CompilerSetup.cmake
index 98c4f85f8f1..330ff4981cc 100644
--- a/scripts/cmake/CompilerSetup.cmake
+++ b/scripts/cmake/CompilerSetup.cmake
@@ -23,6 +23,10 @@ elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "MSVC")
set(COMPILER_IS_MSVC TRUE CACHE BOOL "")
endif() # CMAKE_CXX_COMPILER_ID
+if(APPLE AND "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "arm64")
+ set(APPLE_ARM TRUE CACHE BOOL "Apple M processors" FORCE)
+endif()
+
# GNU-like compiler
if(COMPILER_IS_GCC OR COMPILER_IS_CLANG OR COMPILER_IS_INTEL)
if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
@@ -71,7 +75,7 @@ if(COMPILER_IS_GCC OR COMPILER_IS_CLANG OR COMPILER_IS_INTEL)
set(CPU_FLAGS -mavx2 -march=core-avx2)
elseif(OGS_CPU_ARCHITECTURE STREQUAL "generic")
set(CPU_FLAGS -mtune=generic)
- else()
+ elseif(NOT APPLE_ARM)
set(CPU_FLAGS -march=${OGS_CPU_ARCHITECTURE})
endif()
--
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