diff options
Diffstat (limited to 'gr-trellis/src/lib/Makefile.am')
| -rw-r--r-- | gr-trellis/src/lib/Makefile.am | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/gr-trellis/src/lib/Makefile.am b/gr-trellis/src/lib/Makefile.am index 9eeb3e043..62a8bc94b 100644 --- a/gr-trellis/src/lib/Makefile.am +++ b/gr-trellis/src/lib/Makefile.am @@ -54,10 +54,35 @@ CODE_GENERATOR = \ include $(srcdir)/Makefile.gen -$(srcdir)/Makefile.gen $(GENERATED_H) $(GENERATED_I) $(GENERATED_CC): $(CODE_GENERATOR) - PYTHONPATH=$(top_srcdir)/gnuradio-core/src/python \ - srcdir=$(srcdir) $(PYTHON) $(srcdir)/generate_all.py + +# 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)/gnuradio-core/src/python srcdir=$(srcdir) $(PYTHON) $(srcdir)/generate_all.py touch $(srcdir)/Makefile.in + @mv -f generate-tmp $@ + +$(srcdir)/Makefile.gen $(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 + # These files are built by SWIG. The first is the C++ glue. # The second is the python wrapper that loads the _trellis shared library |