Check SSE support if CMake >= 3.10

Signed-off-by: Shane Loretz <[email protected]>
flexible-collision-library · Nov 5, 2020 · cbfe1e9 · cbfe1e9
1 parent 27a2f60
commit cbfe1e9
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -83,7 +83,13 @@ endif()
 if(CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
   set(FCL_TARGET_SUPPORT_X64_SSE OFF)
 else()
-  set(FCL_TARGET_SUPPORT_X64_SSE ON)
+  cmake_host_system_information(RESULT _has_sse QUERY HAS_SSE)
+  cmake_host_system_information(RESULT _has_sse2 QUERY HAS_SSE2)
+  if(_has_sse AND _has_sse2)
+    set(FCL_TARGET_SUPPORT_X64_SSE ON)
+  else()
+    set(FCL_TARGET_SUPPORT_X64_SSE OFF)
+  endif()
 endif()
 set(SSE_FLAGS "")
 option(FCL_USE_X64_SSE "Whether FCL should x64 SSE instructions" ${FCL_TARGET_SUPPORT_X64_SSE})