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diff -ru spack-src/CMakeLists.txt spack-src.new/CMakeLists.txt
--- spack-src/CMakeLists.txt 2019-07-24 15:44:41.200676445 +0900
+++ spack-src.new/CMakeLists.txt 2019-07-24 15:43:52.140673234 +0900
@@ -50,7 +50,10 @@
endif(CCACHE_FOUND)
if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
- set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native -Wall -Wextra")
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")
+ if(NOT (CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64") AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "6.0")
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native")
+ endif()
if (RAPIDJSON_BUILD_CXX11)
if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.7.0")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x")
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