Index: test/CMakeLists.txt
--- test/CMakeLists.txt.orig
+++ test/CMakeLists.txt
@@ -11,6 +11,7 @@ if (GLM_TEST_ENABLE_SIMD_FMA)
 	add_definitions(-DGLM_FORCE_FMA)
 	if((CMAKE_CXX_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
 		add_compile_options(-mfma)
+		add_definitions(-mfpmath=387)
 	endif()
 endif()
 
@@ -23,7 +24,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 
 	add_definitions(-D_CRT_SECURE_NO_WARNINGS)
 	if(NOT GLM_DISABLE_AUTO_DETECTION)
-		add_compile_options(-Werror -Weverything)
+		add_compile_options(-Weverything)
 	endif()
 
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
