build: convert build system to CMake

CMakeLists.txt

@@ -0,0 +1,48 @@
+cmake_minimum_required(VERSION 3.13)
+project(magenta C ASM)
+
+set(CMAKE_C_STANDARD 17)
+
+set(kernel_name "Magenta")
+set(kernel_exe_name "magenta_kernel")
+
+set(generic_src_dirs ds init kernel libc obj sched util vm)
+set(kernel_sources "")
+set(kernel_headers "")
+
+foreach (dir ${generic_src_dirs})
+	message(STATUS ${dir})
+	file(GLOB_RECURSE dir_sources ${dir}/*.c)
+	file(GLOB_RECURSE dir_headers ${dir}/*.h)
+
+	set(kernel_sources ${kernel_sources} ${dir_sources})
+	set(kernel_headers ${kernel_headers} ${dir_headers})
+endforeach (dir)
+
+set(kernel_arch x86_64)
+file(GLOB_RECURSE arch_sources_c arch/${kernel_arch}/*.c)
+file(GLOB_RECURSE arch_sources_asm arch/${kernel_arch}/*.S)
+file(GLOB_RECURSE arch_headers arch/${kernel_arch}/*.h)
+
+set_property(SOURCE ${arch_sources_asm} PROPERTY LANGUAGE C)
+
+add_executable(${kernel_exe_name}
+	${kernel_sources}
+	${kernel_headers}
+	${arch_sources_c}
+	${arch_sources_asm}
+	${arch_headers})
+
+target_include_directories(${kernel_exe_name} PRIVATE 
+	include 
+	libc/include
+	arch/${kernel_arch}/include)
+target_compile_options(${kernel_exe_name} PRIVATE
+	-nostdlib -ffreestanding
+	-Wall -Werror -pedantic -Wno-language-extension-token -Wno-unused-function  -Wno-gnu-statement-expression
+	-O2 -g -fPIC -Iinclude -Iarch/${kernel_arch}/include -Ilibc/include)
+target_link_libraries(${kernel_exe_name} -nostdlib -ffreestanding -lgcc)
+target_compile_definitions(${kernel_exe_name} PRIVATE BUILD_ID="0")
+
+include(arch/${kernel_arch}/config.cmake)
+include(arch/${kernel_arch}/targets.cmake)