meta: replace cmake mono-build system with a custom build co-ordinator

every system component now has its own self-contained build system, and a
seed file describing the component and its build system and dependencies.

a new tool, meadow, collects and uses these seed files to build the
components into a full system. meadow also manages the target system root
and a host prefix where toolchain tools are installed to.

the build system has also been updated to use a new $ARCH-rosetta-gcc
compiler, and the patches files necessary to build it have been
added to toolchain/cross-compiler.

lib/libc/runtime/CMakeLists.txt

@@ -1,10 +1,16 @@
+cmake_minimum_required(VERSION 3.31)
+project(libc-runtime C ASM)
+
 file(GLOB runtime_sources
 	${CMAKE_CURRENT_SOURCE_DIR}/${CMAKE_SYSTEM_PROCESSOR}/*.s)
 
-rosetta_add_object_library(
-	NAME libc-runtime STATIC
-	SOURCES ${runtime_sources})
+foreach (s ${runtime_sources})
+	get_filename_component(object_name ${s} NAME)
+	get_filename_component(object_basename ${s} NAME_WE)
+	# TODO find a better way of finding the compiled object files
+	set(object_path
+		${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/libc-runtime.dir/${CMAKE_SYSTEM_PROCESSOR}/${object_name}.obj)
+	install(FILES ${object_path} DESTINATION lib RENAME "${object_basename}.o")
+endforeach (s)
 
-sysroot_add_object_library(
-	NAME libc-runtime
-	LIB_DIR /usr/lib)
+add_library(libc-runtime OBJECT ${runtime_sources})

lib/libc/runtime/libc-runtime.seed

@@ -0,0 +1,13 @@
+[seed]
+name = 'libc-runtime'
+
+[dependency]
+no_standard_dependencies = true
+
+[build]
+build_system = 'cmake'
+configure_args = [
+	'-DLIBC_STANDALONE=TRUE'
+]
+
+# vim: ft=toml