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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## `makedepend' program is that only those files that are out of date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.
##
$(srcdir)/Dependencies: .depend
@if test "$(srcdir)" != "."; then \
echo '##' >$@; \
echo '## Copyright by the Board of Trustees of the University of Illinois.' >>$@; \
echo '## All rights reserved.' >>$@; \
echo '##' >>$@; \
echo '## This file is part of HDF5. The full HDF5 copyright notice, including' >>$@; \
echo '## terms governing use, modification, and redistribution, is contained in' >>$@; \
echo '## the files COPYING and Copyright.html. COPYING can be found at the root' >>$@; \
echo '## of the source code distribution tree; Copyright.html can be found at the' >>$@; \
echo '## root level of an installed copy of the electronic HDF5 document set and' >>$@; \
echo '## is linked from the top-level documents page. It can also be found at' >>$@; \
echo '## http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have' >>$@; \
echo '## access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu.' >>$@; \
echo '##' >>$@; \
echo '## This file is machine generated on GNU systems.' >>$@; \
echo '## Only temporary changes may be made here.' >>$@; \
echo >>$@; \
$(PERL) -p $(top_srcdir)/bin/distdep .depend >>$@; \
else \
echo 'Dependencies cannot be built when $$srcdir == $$builddir'; \
fi
.depend: $(LIB_SRC) $(TEST_SRC) $(PROG_SRC)
@touch .depend
@for dep in $? dummy; do \
if test $$dep != "dummy" -a -n "$(PERL)"; then \
case "$$dep" in \
*.c) \
echo Building dependencies for $$dep; \
obj=`basename $$dep .c`.lo; \
sed '\%^'"$$obj"':%,\%[^\\]$$%d' <$@ >$@- && mv $@- $@; \
$(TRACE) $$dep; \
$(CC) -MM -MG $(CPPFLAGS) $$dep 2>/dev/null >>$@; \
$(PERL) -w $(top_srcdir)/bin/dependencies --srcdir=$(srcdir) --top_srcdir=$(top_srcdir) --top_builddir=$(top_builddir) $@; \
;; \
esac; \
fi; \
done
-include .depend
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