Added a CMake build file

CMakeLists.txt

@@ -0,0 +1,28 @@
+cmake_minimum_required(VERSION 3.0)
+
+project(ltl2ba VERSION 1.1)
+
+enable_language(C)
+set(CMAKE_C_STANDARD 99)
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNXT")
+
+add_library(ltl2ba STATIC
+			parse.c
+			lex.c
+			trans.c
+			buchi.c
+			set.c
+			mem.c
+			rewrt.c
+			cache.c
+			alternating.c
+			generalized.c
+			util.c
+			ltl2ba.h
+)
+target_include_directories(ltl2ba PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/lib)
+
+add_executable(main main.c ltl2ba.h)
+set_target_properties(main PROPERTIES OUTPUT_NAME ltl2ba)
+target_link_libraries(main ltl2ba)
+