Index: test/CMakeLists.txt
--- test/CMakeLists.txt.orig
+++ test/CMakeLists.txt
@@ -77,6 +77,7 @@ if(GLM_TEST_ENABLE_FAST_MATH)
 
 	if((CMAKE_CXX_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "GNU"))
 		add_compile_options(-ffast-math)
+		add_definitions(-mfpmath=387)
 
 	elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
 		add_compile_options(/fp:fast)
@@ -197,7 +198,7 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 		message("GLM: Clang - ${CMAKE_CXX_COMPILER_ID} compiler")
 	endif()
 
-	add_compile_options(-Werror -Weverything)
+	add_compile_options(-Weverything)
 	add_compile_options(-Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-c++11-long-long -Wno-padded -Wno-gnu-anonymous-struct -Wno-nested-anon-types)
 	add_compile_options(-Wno-undefined-reinterpret-cast -Wno-sign-conversion -Wno-unused-variable -Wno-missing-prototypes -Wno-unreachable-code -Wno-missing-variable-declarations -Wno-sign-compare -Wno-global-constructors -Wno-unused-macros -Wno-format-nonliteral)