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Previously, every subdirectory that contained generated files would cause a recursion into the ../generator directory. This was slow and unnecessary. Only recurse if the generator actually needs to be rerun. Note this changes the semantics slightly: For example if you added a new action and just ran `make -C ocaml' then previously the generator would be rerun, but now it would not. However I'm not convinced the previous semantics were that useful, particularly considering that with this change a simple `make' is much faster.
27 lines
1.2 KiB
Makefile
27 lines
1.2 KiB
Makefile
# libguestfs
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# Copyright (C) 2009-2013 Red Hat Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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# Individual Makefile.am's should define generator_built if that
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# subdirectory contains any files which are built by the generator.
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# Set generator_built to the list of those files.
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$(generator_built): $(top_builddir)/generator/stamp-generator
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$(top_builddir)/generator/stamp-generator: $(top_builddir)/generator/generator
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! test -f $(top_builddir)/generator/Makefile || \
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$(MAKE) -C $(top_builddir)/generator stamp-generator
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