Merge pull request #60 from sargun/add-cmake

Add CMakeLists.txt, so cmake can be used to build gravity

CMakeLists.txt

@@ -0,0 +1,39 @@
+cmake_minimum_required(VERSION 3.0)
+
+SET(COMPILER_DIR src/compiler/)
+SET(RUNTIME_DIR src/runtime/)
+SET(SHARED_DIR src/shared/)
+SET(UTILS_DIR src/utils/)
+
+SET(UNITTEST_SRC src/cli/unittest.c)
+SET(GRAVITY_SRC src/cli/gravity.c)
+
+AUX_SOURCE_DIRECTORY(${COMPILER_DIR} COMPILER_FILES)
+AUX_SOURCE_DIRECTORY(${RUNTIME_DIR} RUNTIME_FILES)
+AUX_SOURCE_DIRECTORY(${SHARED_DIR} SHARED_FILES)
+AUX_SOURCE_DIRECTORY(${UTILS_DIR} UTILS_FILES)
+
+include_directories(${COMPILER_DIR} ${RUNTIME_DIR} ${SHARED_DIR} ${UTILS_DIR})
+
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -std=c11")
+
+SET(SRC_FILES ${COMPILER_FILES} ${RUNTIME_FILES} ${SHARED_FILES} ${UTILS_FILES})
+
+ADD_LIBRARY(libgravity OBJECT ${SRC_FILES})
+
+if(WIN32)
+    LIST(APPEND LIBS "m" "Shlwapi")
+elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+    LIST(APPEND LIBS "m")
+elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+    LIST(APPEND LIBS "m" "rt")
+endif()
+
+ADD_EXECUTABLE(unittest ${UNITTEST_SRC} $<TARGET_OBJECTS:libgravity>)
+TARGET_LINK_LIBRARIES(unittest ${LIBS})
+
+
+ADD_EXECUTABLE(gravity ${GRAVITY_SRC} $<TARGET_OBJECTS:libgravity>)
+TARGET_LINK_LIBRARIES(gravity ${LIBS})
+
+