preliminary cmake file

CMakeLists.txt

@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.28)
+
+# The name of the project is used for the build target
+project( godot-cpp-template
+        VERSION 1.0
+        DESCRIPTION ""
+        LANGUAGES CXX)
+
+if( CMAKE_C_COMPILER )
+    #Silence unused variable when specified from toolchain
+endif ()
+
+add_subdirectory( godot-cpp )
+
+add_library( ${PROJECT_NAME} SHARED )
+
+target_sources( ${PROJECT_NAME}
+        PRIVATE
+        src/register_types.cpp
+        src/register_types.h
+)
+
+target_link_libraries( ${PROJECT_NAME} PRIVATE godot-cpp )
+
+set( ARCH_NAME_AMD64 x86_64 )
+
+set( PLATFORM_NAME "$<LOWER_CASE:$<PLATFORM_ID>>")
+set( TARGET_NAME "$<LOWER_CASE:$<CONFIG>>")
+set( DOUBLE "$<$<STREQUAL:${FLOAT_PRECISION},double>:.double>")
+set( ARCH_NAME ${ARCH_NAME_${CMAKE_SYSTEM_PROCESSOR}})
+
+set_target_properties( ${PROJECT_NAME}
+        PROPERTIES
+        #The generator expression here prevents a subdir from being created.
+        RUNTIME_OUTPUT_DIRECTORY "$<$<BOOL:1>:${CMAKE_RUNTIME_OUTPUT_DIRECTORY}>"
+        # godot.<platform>.<target>[.dev][.double].<arch>[.custom_suffix][.console].exe
+        OUTPUT_NAME "${PROJECT_NAME}.${PLATFORM_NAME}.${TARGET_NAME}${DOUBLE}.${ARCH_NAME}"
+)