diff --unified --recursive --text a/cmake/compiler-warnings.cmake b/cmake/compiler-warnings.cmake
--- a/cmake/compiler-warnings.cmake	2019-10-20 09:39:07.000000000 -0300
+++ b/cmake/compiler-warnings.cmake	2019-12-01 21:23:51.750926133 -0400
@@ -26,8 +26,6 @@
 
 CHECK_COMPILER_FLAG_AND_ENABLE_IT(-Wold-style-declaration)
 
-CHECK_COMPILER_FLAG_AND_ENABLE_IT(-Wthread-safety)
-
 # may be our bug :(
 CHECK_COMPILER_FLAG_AND_ENABLE_IT(-Wno-error=varargs)