mirror of https://gerrit.osmocom.org/libusrp
79 lines
2.8 KiB
Makefile
79 lines
2.8 KiB
Makefile
# -*- Makefile -*-
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#
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# Copyright 2009 Free Software Foundation, Inc.
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#
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# This file is part of GNU Radio
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#
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# GNU Radio 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 3, or (at your option)
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# any later version.
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#
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# GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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STAMPS ?=
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EXTRA_DIST ?=
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MOSTLYCLEANFILES ?=
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## ----------------------------------------------------------------
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## Special rules for generating sources. Include this file when there
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## are multiple targets ('gen_sources') being created using a single
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## command. In this case, parallel build protection is required, and
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## is provided by this file using a reasonably generic ruleset. For
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## more info, see:
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##
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## http://sources.redhat.com/automake/automake.html#Multiple-Outputs
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##
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## If a single source is being created, then normal rules can be used;
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## using this parallel protection will not hurt, but it also won't help.
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##
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## Define the variable 'par_gen_command' to be the command that
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## creates the sources 'gen_sources' from the dependency files
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## 'gen_sources_deps'.
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##
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## These STAMPS will be removed upon "make clean", but are otherwise
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## not used.
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STAMPS += $(DEPDIR)/stamp-sources-generate*
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## The following STAMP will be included in the archive, to show that
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## this these rules have been followed.
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EXTRA_DIST += stamp-sources-generate
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MOSTLYCLEANFILES += stamp-sources-generate
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stamp-sources-generate: $(gen_sources_deps)
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mkdir -p $(DEPDIR)
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@rm -f $(DEPDIR)/stamp-sources-generate-tmp
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@touch $(DEPDIR)/stamp-sources-generate-tmp
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$(par_gen_command)
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@mv -f $(DEPDIR)/stamp-sources-generate-tmp $@
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$(gen_sources): stamp-sources-generate
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## Recover from the removal of $@
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@if test -f $@; then :; else \
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trap 'rm -rf $(DEPDIR)/stamp-sources-generate-*' 1 2 13 15; \
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if mkdir $(DEPDIR)/stamp-sources-generate-lock 2>/dev/null; then \
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## This code is being executed by the first process.
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rm -f stamp-sources-generate; \
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$(MAKE) $(AM_MAKEFLAGS) stamp-sources-generate; \
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rmdir $(DEPDIR)/stamp-sources-generate-lock; \
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else \
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## This code is being executed by the follower processes.
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## Wait until the first process is done.
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while test -d $(DEPDIR)/stamp-sources-generate-lock; do sleep 1; done; \
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## Succeed iff the first process succeeded.
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test -f stamp-sources-generate; exit $$?; \
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fi; \
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fi;
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