CPPFLAGS := -I. -DUSE_TCL_STUBS=1 -DXVFS_MODE_FLEXIBLE
CFLAGS   := -fPIC -g3 -ggdb3 -Wall
LDFLAGS  :=
LIBS     := -ltclstub8.6

all: example.so

example.c: $(shell find example -type f) $(shell find lib -type f) xvfs.c.rvt xvfs-create Makefile
	./xvfs-create --directory example --name example > example.c.new
	mv example.c.new example.c

example.o: example.c xvfs-core.h Makefile
example.o: example.c xvfs-core.h xvfs-core.c Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) -o example.o -c example.c

xvfs-core.o: xvfs-core.c xvfs-core.h Makefile
	$(CC) $(CPPFLAGS) $(CFLAGS) -o xvfs-core.o -c xvfs-core.c

example.so: example.o xvfs-core.o Makefile
	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o example.so example.o xvfs-core.o $(LIBS)
example.so: example.o Makefile
	$(CC) $(CFLAGS) $(LDFLAGS) -shared -o example.so example.o $(LIBS)

test: example.so
	echo 'if {[catch { load ./example.so Xvfs_example; source //xvfs:/example/main.tcl }]} { puts stderr $$::errorInfo; exit 1 }; exit 0' | tclsh

clean:
	rm -f example.so example.o example.c
	rm -f xvfs-core.o

distclean: clean

.PHONY: all clean distclean test

 *                 handler
 *    3. flexible -- Attempts to find a core Xvfs instance for the
 *                   process at runtime, if found do #2, otherwise
 *                   fallback to #1
 *
 */
static Tcl_Filesystem xvfs_tclfs_standalone_fs;
int xvfs_standalone_register(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo) {
static int xvfs_standalone_register(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo) {
	int tcl_ret;
	static int registered = 0;
	
	/*
	 * Ensure this instance is not already registered
	 */
	if (registered) {

	}
	
	return(TCL_OK);
}
#endif /* XVFS_MODE_STANDALONE || XVFS_MODE_FLEXIBLE */

#if defined(XVFS_MODE_FLEXIBLE)
int xvfs_flexible_register(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo) {
static int xvfs_flexible_register(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo) {
	ClientData fsHandlerDataRaw;
	struct xvfs_tclfs_server_info *fsHandlerData;
	const Tcl_Filesystem *fsHandler;
	int (*xvfs_register)(Tcl_Interp *interp, struct Xvfs_FSInfo *fsInfo);
	Tcl_Obj *rootPathObj;

	xvfs_register = &xvfs_standalone_register;

#if defined(XVFS_MODE_STANDALONE)
/*
 * In standalone mode, we just redefine calls to
 * Xvfs_Register() to go to the xvfs_standalone_register()
 * function
 */
#  define Xvfs_Register xvfs_standalone_register
XVFS_REGISTER_INTERFACE(Xvfs_Register)
static XVFS_REGISTER_INTERFACE(Xvfs_Register)

#elif defined(XVFS_MODE_FLEXIBLE)
/*
 * In flexible mode we declare an external symbol named
 * In flexible mode, we just redefine calls to
 * Xvfs_Register(), as well as an internal symbol called
 * xvfs_flexible_register(), which we redefine future
 * calls to Xvfs_Register() to invoke
 * Xvfs_Register() to go to the xvfs_flexible_register()
 * function which will either dispatch to a common
 * core XVFS or use the xvfs_standalone_register()
 * function as a standalone would.
 */
extern XVFS_REGISTER_INTERFACE(Xvfs_Register)
#  define Xvfs_Register xvfs_flexible_register
XVFS_REGISTER_INTERFACE(Xvfs_Register)
static XVFS_REGISTER_INTERFACE(Xvfs_Register)

#elif defined(XVFS_MODE_CLIENT)
/*
 * In client mode we declare an external symbol named
 * Xvfs_Register() that must be provided by the environment
 * we are loaded into
 */
extern XVFS_REGISTER_INTERFACE(Xvfs_Register)

#elif defined(XVFS_MODE_SERVER)
/*
 * In server mode we are going to implementing Xvfs_Register()
 * for flexible/client modes, just forward declare it
 */
XVFS_REGISTER_INTERFACE(Xvfs_Register)

#else
#  error Unsupported XVFS_MODE
#endif

/*
 * In flexible or standalone mode, directly include what
 * would otherwise be a separate translation unit, to
 * avoid symbols leaking
 */
#if defined(XVFS_MODE_FLEXIBLE) || defined(XVFS_MODE_STANDALONE)
#include <xvfs-core.c>
#endif

#endif

		::minirivet::parse $template
	}
	"dump-tcl" {
		set xvfs_tcl [file join $sourceDirectory lib xvfs xvfs.tcl]
		set xvfs_core_h [file join $sourceDirectory xvfs-core.h]
		set xvfs_core_c [file join $sourceDirectory xvfs-core.c]

		set cleanup {
		set cleanup [list "#include <xvfs-core.h>" ""]
			"#include <xvfs-core.h>" ""
			"#include <xvfs-core.c>" ""
		}

		set core_header_data ""
		append core_header_data [string map $cleanup [read [open $xvfs_core_h]]] "\n"
		append core_header_data [string map $cleanup [read [open $xvfs_core_c]]] "\n"

		puts "#! /usr/bin/env tclsh"
		puts ""