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# -*- makefile -*-
# We keep a list of dependencies in `.depend' for each of the source
# files on which it depends. When one of the source files is modified
# we remove its record from .depend and regenerate its dependencies,
# tacking them onto the end of .depend. By including the .depend file
# into the makefile, we're telling make that the makefile depends on
# the dependency list in the .depend file.
#
# This is as fast as the `.d' method described in the GNU make manual
# for automatic dependencies, but has the added advantage that all
# dependencies are stored in one place. The advantage over the
# `makedepend' program is that only those files that are out of date
# have dependency information rebuilt, and the Makefile is not
# modified.
#
# This is also where tracing information is updated. The $(TRACE)
# program is run on each source file to make sure that the H5TRACE()
# macros are up to date. If they are then the file is not modified,
# otherwise the file is changed and a backup is saved by appending a
# tilde to the file name.
#
.PRECIOUS: .depend .distdep
dep depend: .distdep
.distdep: .depend
touch .distdep
-srcdir=$(srcdir) perl -p $(top_srcdir)/bin/distdep .depend >.distdep
.depend: $(LIB_SRC) $(TEST_SRC) $(PROG_SRC)
@touch .depend
@for dep in $? dummy; do \
if [ $$dep != "dummy" ]; then \
echo Building dependencies for $$dep; \
obj=`echo $$dep | sed 's/\.c/\\\\.o/'`; \
sed '\%$$obj%,\%[^\\]$$%d' <$@ >$@- && mv $@- $@; \
$(TRACE) $$dep; \
$(CC) -M -MG $(CPPFLAGS) $$dep >>$@; \
fi; \
done;
-perl -p $(top_srcdir)/bin/distdep .depend >.distdep
-include .depend
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