https://github.com/kaworu/tagutil/commit/5d1a1d74815375edb69314f8189e8590f188b6f4

--- src/CMakeLists.txt.orig	2019-12-23 16:19:17 UTC
+++ src/CMakeLists.txt
@@ -1,8 +1,6 @@
 # {{{ CMake stuff
-cmake_minimum_required(VERSION 2.6.0)
-if(COMMAND cmake_policy)
-    cmake_policy(VERSION 2.6)
-endif()
+cmake_minimum_required(VERSION 3.8)
+cmake_policy(VERSION 3.8)
 # }}}
 
 #{{{ Basic App setup
@@ -31,10 +29,10 @@ add_compile_options(-std=c11 -Wall -Wextra)
 
 # CFLAGS
 add_compile_options(-std=c11 -Wall -Wextra)
-add_compile_options(-fstack-protector-strong -o aslr -fpie)
+add_compile_options(-fstack-protector-strong -fpie)
 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pie")
 # Per build type flags.
-set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS} -O0 -g -fsanitize=undefined")
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS}")
 # CMAKE_BUILD_TYPE=GRIM: *very* strict compiler options
 set(CMAKE_C_FLAGS_GRIM "${CMAKE_C_FLAGS_DEBUG} -Wextra -pedantic -Wconversion -Wstrict-prototypes -Wcast-qual -Wcast-align -Wshadow -Wredundant-decls -Wundef -Wfloat-equal -Wmissing-include-dirs -Wswitch-default -Wpointer-arith -Wbad-function-cast -Wnested-externs -Wold-style-definition -Wformat=2 -Winit-self -Wwrite-strings -Wmissing-prototypes")
 include(CheckCCompilerFlag)