$OpenBSD$

Index: CMakeLists.txt
--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -56,7 +56,6 @@ string(TOUPPER "CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE}" B
 
 if(NOT MSVC)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic")
-	set(CMAKE_CXX_FLAGS_RELEASE "-O3")
 	set(CMAKE_CXX_FLAGS_DEBUG "-O0 -ggdb3")
 endif()
 
