From a2bc656be80e36e8ff80364a7ca51a91ffb2c009 Mon Sep 17 00:00:00 2001 From: eb <eb@221aa14e-8319-0410-a670-987f0aec2ac5> Date: Mon, 3 Mar 2008 22:14:50 +0000 Subject: Fix for ticket:236, parallel makes are indeterminate. Merged eb/pmake r7909:7911 into trunk git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@7912 221aa14e-8319-0410-a670-987f0aec2ac5 --- pmt/src/lib/Makefile.am | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) (limited to 'pmt/src/lib') diff --git a/pmt/src/lib/Makefile.am b/pmt/src/lib/Makefile.am index 1ea670281a..16834746dd 100644 --- a/pmt/src/lib/Makefile.am +++ b/pmt/src/lib/Makefile.am @@ -46,8 +46,34 @@ GENERATED_CC = \ qa_pmt_unv.cc -$(GENERATED_H) $(GENERATED_I) $(GENERATED_CC): $(CODE_GENERATOR) + +# Ensure parallel does the right thing. +# http://sources.redhat.com/automake/automake.html#Multiple-Outputs + +generate-stamp: $(CODE_GENERATOR) + @rm -f generate-tmp + @touch generate-tmp PYTHONPATH=$(top_srcdir)/pmt/src/lib srcdir=$(srcdir) $(PYTHON) $(srcdir)/generate_unv.py + @mv -f generate-tmp $@ + +$(GENERATED_H) $(GENERATED_I) $(GENERATED_CC): generate-stamp +## Recover from the removal of $@ + @if test -f $@; then :; else \ + trap 'rm -rf generate-lock generate-stamp' 1 2 13 15; \ + if mkdir generate-lock 2>/dev/null; then \ +## This code is being executed by the first process. + rm -f generate-stamp; \ + $(MAKE) $(AM_MAKEFLAGS) generate-stamp; \ + rmdir generate-lock; \ + else \ +## This code is being executed by the follower processes. +## Wait until the first process is done. + while test -d generate-lock; do sleep 1; done; \ +## Succeed if and only if the first process succeeded. + test -f generate-stamp; exit $$?; \ + fi; \ + fi + pmt_serial_tags.h: $(srcdir)/../scheme/gnuradio/gen-serial-tags.scm $(srcdir)/../scheme/gnuradio/pmt-serial-tags.scm $(RUN_GUILE) $(srcdir)/../scheme/gnuradio/gen-serial-tags.scm $(srcdir)/../scheme/gnuradio/pmt-serial-tags.scm pmt_serial_tags.h -- cgit v1.2.3