Merge pull request #2868 from 7680x4320/fix-cmake-find-sse

Use -mtune instead of -march on non-x86 CPUs
PointCloudLibrary · Feb 18, 2019 · 73f6af1 · 73f6af1
2 parents 4606e94 + 322fac6
commit 73f6af1
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/cmake/pcl_find_sse.cmake b/cmake/pcl_find_sse.cmake
@@ -7,7 +7,13 @@ macro(PCL_CHECK_FOR_SSE)
     if(NOT CMAKE_CROSSCOMPILING)
         # Test GCC/G++ and CLANG
         if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG)
-            list(APPEND SSE_FLAGS "-march=native")
+            include(CheckCXXCompilerFlag)
+            check_cxx_compiler_flag("-march=native" HAVE_MARCH)
+            if(HAVE_MARCH)
+                list(APPEND SSE_FLAGS "-march=native")
+            else()
+                list(APPEND SSE_FLAGS "-mtune=native")
+            endif()
             message(STATUS "Using CPU native flags for SSE optimization: ${SSE_FLAGS}")
         endif()
     endif()