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/libfs/CMakeLists.txt

@@ -1,33 +1,27 @@
+cmake_minimum_required(VERSION 3.31)
+project(fs C ASM)
+
 file(GLOB sources
 	${CMAKE_CURRENT_SOURCE_DIR}/*.c
 	${CMAKE_CURRENT_SOURCE_DIR}/interface/*.c)
 file(GLOB headers
 	${CMAKE_CURRENT_SOURCE_DIR}/*.h
 	${CMAKE_CURRENT_SOURCE_DIR}/include/fs/*.h)
+file(GLOB public_headers
+	${CMAKE_CURRENT_SOURCE_DIR}/include/fs/*.h)
 
 set(public_include_dirs
 	${CMAKE_CURRENT_SOURCE_DIR}/include)
 
-rosetta_add_library(
-	NAME libfs SHARED STATIC
-	PUBLIC_INCLUDE_DIRS ${public_include_dirs}
-	SOURCES ${sources}
-	HEADERS ${headers})
+if (FS_STATIC)
+	add_library(fs STATIC ${sources} ${headers})
+	target_link_libraries(fs magenta libc-core libxpc.a)
+	set_target_properties(fs PROPERTIES POSITION_INDEPENDENT_CODE FALSE)
+else ()
+	add_library(fs SHARED ${sources} ${headers})
+	target_link_libraries(fs magenta c xpc)
+endif ()
 
-sysroot_add_library(
-	NAME libfs
-	HEADER_DIR /usr/include
-	LIB_DIR /usr/lib)
-sysroot_add_library(
-	NAME libfs-static
-	HEADER_DIR /usr/include
-	LIB_DIR /usr/lib)
-
-bsp_add_library(
-	NAME libfs
-	LIB_DIR /usr/lib)
-
-target_link_libraries(libfs libmagenta interface::fs libc libxpc)
-target_link_libraries(libfs-static libmagenta interface::fs libc-core libxpc-static)
-
-set_target_properties(libfs-static PROPERTIES POSITION_INDEPENDENT_CODE FALSE)
+target_include_directories(fs PUBLIC include)
+install(TARGETS fs)
+install(FILES ${public_headers} DESTINATION include/fs)