improved makefile

diff --git a/example-codegen/Makefile.am b/example-codegen/Makefile.am
index b8c4c1c..202f514 100644 (file)
--- a/example-codegen/Makefile.am
+++ b/example-codegen/Makefile.am
@@ -27,11 +27,17 @@ noinst_PROGRAMS = client server
 
 # always the same:
 
-IFILES=$(foreach i, $(CMDGROUPS), $(foreach j, $($(i)_GROUP), $(j)))
+#IFILES=$(foreach i, $(CMDGROUPS), $(foreach j, $($(i)_GROUP), $(j)))
 STAMPS=$(CMDGROUPS:=.stamp)
-$(STAMPS): %.stamp : $(IFILES) $(top_builddir)/codegen/codegen Makefile.am
+
+GROUPDEP_FILES =  $(foreach i, $(CMDGROUPS), .deps/group_$(i).P)
+-include $(GROUPDEP_FILES)
+
+.deps/group_%.P : Makefile.am
+       echo $@ : $($*_GROUP) > .deps/group_$*.P
+
+%.stamp : .deps/group_%.P $(top_builddir)/codegen/codegen Makefile.am
 # assuming we have some unix like shell (maybe even bash)
-       echo IFILES: $(IFILES)
        echo BUILT_SOURCES: $(BUILT_SOURCES)
        cp -v $(top_srcdir)/codegen/codegen-stubhead.hxx $*_common.hxx;
        cp -v $(top_srcdir)/codegen/codegen-stubhead.hxx $*_server.hxx;