--- a/Makefile.in
+++ b/Makefile.in
@@ -10,79 +10,57 @@
 VPATH       = $(srcdir)
 
 # These may be overridden by make invocators
-DESTDIR  =
-OPTFLAGS = @OPTFLAGS@
-CC       = @CC@
-LIBS     = @LIBS@
-CFLAGS   = @CFLAGS@
-CPPFLAGS = @CPPFLAGS@  # AC_LIB_LINKFLAGS adds to this..
-LDFLAGS  = @LDFLAGS@
-INSTALL  = @INSTALL@
-INSTALL_TYPE = @INSTALL_TYPE@
-
-# Set by configure
-GOSH     = @GOSH@
-GAUCHE_CONFIG = @GAUCHE_CONFIG@
+DESTDIR        =
+CFLAGS         = @CFLAGS@
+CPPFLAGS       = @CPPFLAGS@  # AC_LIB_LINKFLAGS adds to this..
+LDFLAGS        = @LDFLAGS@
+GOSH           = "@GOSH@"
+GAUCHE_CONFIG  = "@GAUCHE_CONFIG@"
+GAUCHE_PACKAGE = "@GAUCHE_PACKAGE@"
+INSTALL        = "@GAUCHE_INSTALL@"
+
+# Other parameters
+SOEXT    = @SOEXT@
 OBJEXT   = @OBJEXT@
-DSOEXT   = @SOEXT@
+EXEEXT   = @EXEEXT@
 
-MODULE   = qdbm
+# Module-specific stuff
+PACKAGE   = qdbm
 
-ARCHFILES = $(MODULE).$(DSOEXT)
-SCMFILES  = $(MODULE).scm
+ARCHFILES = $(PACKAGE).$(SOEXT)
+SCMFILES  = $(PACKAGE).scm
 HEADERS   =
 
 TARGET    = $(ARCHFILES)
-OBJS      = $(MODULE)_head.$(OBJEXT) \
-            qdbm.$(OBJEXT) \
-	    depot.$(OBJEXT) \
-            $(MODULE)_tail.$(OBJEXT)
-GENERATED = depot.c $(MODULE)_head.c $(MODULE)_tail.c
+GENERATED =
 CONFIG_GENERATED = Makefile config.cache config.log config.status \
-		   configure.lineno autom4te*.cache
-
-HEADER_INSTALL_DIR  = $(DESTDIR)/`$(GAUCHE_CONFIG) --$(INSTALL_TYPE)incdir`
-SCM_INSTALL_DIR     = $(DESTDIR)/`$(GAUCHE_CONFIG) --$(INSTALL_TYPE)libdir`/dbm
-ARCH_INSTALL_DIR    = $(DESTDIR)/`$(GAUCHE_CONFIG) --$(INSTALL_TYPE)archdir`
-
-all : $(TARGET)
+		   configure.lineno autom4te*.cache @PACKAGE_NAME@.gpd
 
-.SUFFIXES: .o .stub
+HEADER_INSTALL_DIR  = "$(DESTDIR)`$(GAUCHE_CONFIG) --siteincdir`"
+SCM_INSTALL_DIR     = "$(DESTDIR)`$(GAUCHE_CONFIG) --sitelibdir`"
+ARCH_INSTALL_DIR    = "$(DESTDIR)`$(GAUCHE_CONFIG) --sitearchdir`"
 
-.c.o:
-	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+qdbm_SRCS = qdbm.c depot.stub
+qdbm_LIBS = @LIBQDBM@
 
-.stub.c:
-	$(GOSH) genstub $<
-
-depot.c : depot.stub
-
-$(MODULE).$(DSOEXT): $(OBJS)
-	$(CC) -Wl,-rpath -Wl,`gauche-config --sysarchdir` $(LDFLAGS) $(MODULE).$(DSOEXT) $(OBJS) $(LIBS) @LIBQDBM@
+all : $(TARGET)
 
-$(MODULE)_head.c $(MODULE)_tail.c :
-	$(GAUCHE_CONFIG) --fixup-extension $(MODULE)
+$(PACKAGE).$(SOEXT): $(qdbm_SRCS)
+	$(GAUCHE_PACKAGE) compile --verbose --cppflags="$(CPPFLAGS)" --cflags="$(CFLAGS)" --ldflags="$(LDFLAGS)" --libs="$(qdbm_LIBS)" $(PACKAGE) $(qdbm_SRCS)
 
 check : all
 	@rm -f test.log
 	$(GOSH) -I. test.scm > test.log
 
 install : all
-	if test ! -z "$(HEADERS)"; then \
-	  $(INSTALL) -d $(HEADER_INSTALL_DIR); \
-	  $(INSTALL) -m 444 $(HEADERS) $(HEADER_INSTALL_DIR); \
-	fi
-	if test ! -z "$(SCMFILES)"; then \
-	  $(INSTALL) -d $(SCM_INSTALL_DIR); \
-	  $(INSTALL) -m 444 $(SCMFILES) $(SCM_INSTALL_DIR); \
-	fi
-	if test ! -z "$(ARCHFILES)"; then \
-	  $(INSTALL) -d $(ARCH_INSTALL_DIR); \
-	  $(INSTALL) -m 555 $(ARCHFILES) $(ARCH_INSTALL_DIR); \
-	fi
+	$(INSTALL) -m 444 -T $(HEADER_INSTALL_DIR) $(HEADERS)
+	$(INSTALL) -m 444 -T $(SCM_INSTALL_DIR)/dbm $(SCMFILES)
+	$(INSTALL) -m 555 -T $(ARCH_INSTALL_DIR) $(ARCHFILES)
+	$(INSTALL) -m 444 -T $(SCM_INSTALL_DIR)/.packages @PACKAGE_NAME@.gpd
 
 clean :
-	rm -rf core $(TARGET) $(OBJS) $(GENERATED) *~ test.log so_locations
+	$(GAUCHE_PACKAGE) compile --clean $(PACKAGE) $(qdbm_SRCS)
+	rm -rf core $(TARGET) $(GENERATED) *~ test.log so_locations
 
 distclean : clean
 	rm -rf $(CONFIG_GENERATED)
--- a/configure.ac
+++ b/configure.ac
@@ -4,18 +4,11 @@
 AC_INIT(Gauche-qdbm, 0.2)
 AC_CONFIG_SRCDIR(qdbm.c)
 
-AC_CANONICAL_SYSTEM
-
 AC_GAUCHE_INIT_EXT
-AC_GAUCHE_INSTALL_TYPE(site)
 AC_GAUCHE_CC
-AC_GAUCHE_FLAGS
-
-AC_PROG_INSTALL
 
 AC_LIB_LINKFLAGS(qdbm)
 
-AC_GAUCHE_FIX_LIBS
-
+AC_GAUCHE_MAKE_GPD
 echo $PACKAGE_VERSION > VERSION
 AC_OUTPUT(Makefile)
--- a/depot.stub
+++ b/depot.stub
@@ -219,7 +219,7 @@
   SCM_RETURN(SCM_MAKE_INT(r));")
 
 (define-cproc qdbm-dpprimenum (num::<fixnum>)
-  (return <int> "dpprimenum"))
+  "  SCM_RETURN(SCM_MAKE_INT(dpprimenum(num)));")
 
 (define-enum DP_OREADER)
 (define-enum DP_OWRITER)