build: add build script to configure kernel and tools build systems

CMakeLists.txt

@@ -1,10 +1,16 @@
 cmake_minimum_required(VERSION 3.13)
-project(magenta C ASM)
+project(mango C ASM)
+
+if (NOT BUILD_TOOLS_DIR)
+	message(FATAL_ERROR "No build tools directory specified. Please run build.sh")
+endif ()
 
 set(CMAKE_C_STANDARD 17)
 
-set(kernel_name "Magenta")
-set(kernel_exe_name "magenta_kernel")
+set(kernel_arch x86_64)
+
+set(kernel_name "Mango")
+set(kernel_exe_name "mango_kernel")
 
 set(generic_src_dirs ds init kernel libc obj sched util vm)
 set(kernel_sources "")
@@ -19,7 +25,6 @@ foreach (dir ${generic_src_dirs})
 	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/${kernel_arch}/*.h)
@@ -33,8 +38,8 @@ add_executable(${kernel_exe_name}
 	${arch_sources_asm}
 	${arch_headers})
 
-target_include_directories(${kernel_exe_name} PRIVATE 
-	include 
+target_include_directories(${kernel_exe_name} PRIVATE
+	include
 	libc/include
 	arch/${kernel_arch}/include)
 target_compile_options(${kernel_exe_name} PRIVATE