--- CMakeLists.txt.orig	2020-10-25 16:40:08 UTC
+++ CMakeLists.txt
@@ -33,7 +33,7 @@ if(NOT HAVE_REALLOCARRAY)
   set (SRC ${SRC} compat/reallocarray.c)
 endif()
 
-set(CMAKE_C_FLAGS_RELEASE "-D_FORTIFY_SOURCE=2")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -D_FORTIFY_SOURCE=2")
 add_definitions(-D_GNU_SOURCE -Wall -Wextra -std=c99 -pedantic)
 add_library(ansilove SHARED ${SRC} ${LOADERS})