add version information function

CMakeLists.txt

@@ -7,6 +7,13 @@ set(SRC_FILES
 	utils.c
 )
 
+set(CMAKE_PROJECT_VERSION_MAJOR 1)
+set(CMAKE_PROJECT_VERSION_MINOR 1)
+set(CMAKE_PROJECT_VERSION_PATCH 4)
+add_compile_definitions(VERSION_MAJOR=${CMAKE_PROJECT_VERSION_MAJOR})
+add_compile_definitions(VERSION_MINOR=${CMAKE_PROJECT_VERSION_MINOR})
+add_compile_definitions(VERSION_PATCH=${CMAKE_PROJECT_VERSION_PATCH})
+
 set(API_HEADERS_DIR relaxisloader/)
 
 set(API_HEADERS_C
@@ -28,10 +35,12 @@ if(WIN32)
 		${PROJECT_SOURCE_DIR}/strptime/strptime.c
 	)
 	set(SQL_LIBRARIES sqlite3.a)
-
+else()
 endif(WIN32)
 
-add_library(${PROJECT_NAME} SHARED ${SRC_FILES} ${API_HEADERS_C})
+set(LIBTYPE SHARED)
+
+add_library(${PROJECT_NAME} ${LIBTYPE} ${SRC_FILES} ${API_HEADERS_C})
 target_link_libraries(${PROJECT_NAME} ${SQL_LIBRARIES})
 target_include_directories(${PROJECT_NAME} PUBLIC ./${API_HEADERS_DIR} ${SQL_INCLUDE_DIRS})
 set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "-Wall -O2 -march=native -g" LINK_FLAGS "-flto -pthread")

relaxisloader.c

@@ -33,11 +33,12 @@ struct rlxfile
 	sqlite3 *db;
 };
 
-/**
- * @brief Frees a project struct
- *
- * @param proj project struct to be freed, or NULL
- */
+const struct rlx_version_fixed rlx_get_version(void)
+{
+	static struct rlx_version_fixed version = {VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH};
+	return version;
+}
+
 void rlx_project_free(struct rlx_project* proj)
 {
 	if(!proj)

relaxisloader/relaxisloader.h

@@ -40,6 +40,22 @@ enum {
 	RLX_ERR_FMT = -104,
 };
 
+struct rlx_version_fixed {
+	int major;
+	int minor;
+	int patch;
+};
+
+/**
+ * @brief Gets the version of librelaxisloader
+ *
+ * This function must always be used for every singular rlx_project struct to avoid memory leaks.
+ * It is safe to pass NULL to this function.
+ *
+ * @return a rlx_version_fixed struct with the version, owned by librelaxisloader do not free.
+ */
+const struct rlx_version_fixed rlx_get_version(void);
+
 struct rlxfile;
 
 /**