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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## `makedepend' program is that only those files that are out of date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: $(srcdir)/Dependencies
$(srcdir)/Dependencies: .depend
-@echo '## This file is machine generated on GNU systems.' >$@
-@echo '## Only temporary changes may be made here.' >>@
-@echo >>@
-srcdir=$(srcdir) perl -p $(top_srcdir)/bin/distdep .depend >>$@
.PRECIOUS: .depend
.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 $$dep | sed 's/\.c/\\\\.lo/'`; \
sed '\%$$obj%,\%[^\\]$$%d' <$@ >$@- && mv $@- $@; \
$(TRACE) $$dep; \
$(CC) -M -MG $(CPPFLAGS) $$dep 2>/dev/null | \
sed 's% $(srcdir)/% $$(srcdir)/%g' | \
sed 's% $(top_srcdir)/% $$(top_srcdir)/%g' | \
sed 's% $(top_builddir)/% $$(top_builddir)/%g' | \
sed 's/\.o/.lo/' >>$@; \
fi; \
done;
-@echo '## This file is machine generated on GNU systems.' \
>$(srcdir)/Dependencies
-@echo '## Only temporary changes may be made here.' \
>>$(srcdir)/Dependencies
-@echo >>$(srcdir)/Dependencies
-perl -p $(top_srcdir)/bin/distdep .depend >>$(srcdir)/Dependencies
-include .depend
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