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-# -*- Makefile -*-
-#
-# Copyright 2009 Free Software Foundation, Inc.
-#
-# This file is part of GNU Radio
-#
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING. If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-#
-
-## ----------------------------------------------------------------
-## Special rule for regenerating the local Makefile.gen
-##
-## Define the variable 'makefile_gen_gen_command' to be the command
-## that creates $(srcdir)/Makefile.gen . The rule below will check to
-## make sure that it can create the generated file, and if not exits
-## with an error -1.
-##
-
-STAMPS += $(DEPDIR)/Makefile.gen-generate-generate-*
-
-generate-makefile $(srcdir)/Makefile.gen:
-## parallel make protection; can't hurt
- @trap 'rm -rf $(DEPDIR)/Makefile.gen-generate-*' 1 2 13 15; \
- if mkdir $(DEPDIR)/Makefile.gen-generate-lock 2>/dev/null; then \
-## This code is being executed by the first process.
- rm -f $(DEPDIR)/Makefile.gen-generate-stamp; \
- rm -f $(DEPDIR)/Makefile.gen-generate-tmp; \
- touch $(DEPDIR)/Makefile.gen-generate-tmp; \
-## recreate $(srcdir)/Makefile.gen only if ...
- do_recreate=0; \
- if test -f $(srcdir)/Makefile.gen; then \
-## the file exists and can be removed; or ...
- if $(RM) $(srcdir)/Makefile.gen 2>/dev/null; then \
- do_recreate=1; \
- fi; \
- else \
-## the file doesn't exist, but can be created (e.g., by touching it).
- if touch $(srcdir)/Makefile.gen 2>/dev/null; then \
- do_recreate=1; \
- fi; \
- fi; \
- if test "$$do_recreate" == "1"; then \
- echo "Regenerating $(srcdir)/Makefile.gen"; \
- $(makefile_gen_gen_command); \
- else \
- echo "Cannot recreate $(srcdir)/Makefile.gen because the directory or file is write-protected."; \
- exit -1; \
- fi; \
- mv -f $(DEPDIR)/Makefile.gen-generate-tmp $(DEPDIR)/Makefile.gen-generate-stamp; \
- rmdir $(DEPDIR)/Makefile.gen-generate-lock; \
- else \
-## This code is being executed by the follower processes.
-## Wait until the first process is done.
- while test -d $(DEPDIR)/Makefile.gen-generate-lock; do sleep 1; done; \
-## Succeed if and only if the first process succeeded.
- test -f $(DEPDIR)/Makefile.gen-generate-stamp; exit $$?; \
- fi;