diff --git a/.gitignore b/.gitignore
index f765426..0ef0814 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,3 +66,4 @@ CTestTestfile.cmake
 _deps
 CMakeUserPresets.json
 
+build
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..83aacc5
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.10)
+project(cosms-core C)
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_C_STANDARD_REQUIRED ON)
+
+file(GLOB_RECURSE SRC_FILES "${PROJECT_SOURCE_DIR}/src/*.c")
+add_library(cosms-core STATIC ${SRC_FILES})
+target_include_directories(cosms-core PUBLIC ${PROJECT_SOURCE_DIR}/include)
+
+if (MSVC)
+	target_compile_options(cosms-core PRIVATE /W4)
+else()
+	target_compile_options(cosms-core PRIVATE -wall -Wextra -pedantic)
+endif()
+
+add_executable(cosms-core-test ${PROJECT_SOURCE_DIR}/tests/main.c)
+
+target_include_directories(cosms-core-test PRIVATE ${PROJECT_SOURCE_DIR}/tests)
+target_link_libraries(cosms-core-test cosms-core)
diff --git a/include/cosms-core/file.h b/include/cosms-core/file.h
new file mode 100644
index 0000000..d29be8b
--- /dev/null
+++ b/include/cosms-core/file.h
@@ -0,0 +1,7 @@
+#ifndef COSMS_CORE_FILE
+#define COSMS_CORE_FILE
+
+void cosms_core_file_read(char *path);
+void cosms_core_file_write(char *path);
+
+#endif
diff --git a/src/file.c b/src/file.c
new file mode 100644
index 0000000..bf321da
--- /dev/null
+++ b/src/file.c
@@ -0,0 +1,11 @@
+#include <cosms-core/file.h>
+
+#include <stdio.h>
+
+void cosms_core_file_read(char *path) {
+	printf("Hello, World!");
+}
+
+void cosms_core_file_write(char *path) {
+	printf("Hello, World");
+}
diff --git a/tests/main.c b/tests/main.c
new file mode 100644
index 0000000..e6e6793
--- /dev/null
+++ b/tests/main.c
@@ -0,0 +1,6 @@
+#include <cosms-core/file.h>
+
+int main(void) {
+	cosms_core_file_read("test.txt");
+	return 0;
+}