* Gary V. Vaughan wrote on Wed, Sep 22, 2010 at 10:36:01PM CEST: > On 23 Sep 2010, at 01:22, Ralf Wildenhues wrote: > > * Eric Blake wrote on Wed, Sep 22, 2010 at 08:19:28PM CEST: > >> On 09/22/2010 12:13 PM, Ralf Wildenhues wrote: > >>>> Is it acceptable instead to use a nested $(MAKE) invocation prior to > >>>> running help2man to ensure the binary is up-to-date? > >>> > >>> Can you show a patch so I can see what you mean? > >> > >> $(srcdir)/doc/libtool.1: $(srcdir)/$(auxdir)/ltmain.sh > >> + $(MAKE) libtool > >> $(update_mans) --help-option=--help-all libtool > > > > When -jN has been passed, the two makes may both try to update 'libtool' > > at the same time, leading to a race. > > > >> $(srcdir)/doc/libtoolize.1: $(srcdir)/libtoolize.in > >> + $(MAKE) libtoolize > >> $(update_mans) libtoolize > > > > Likewise here. > > How about a putting the shell code for libtoolize.in -> libtoolize > transformation and writing: > > $(srcdir)/doc/libtoolize.1: $(srcdir)/libtoolize.in > $(generate_libtoolize) > $(update_mans) libtoolize
That will not help, because 'make' may still run it in parallel with the commands from the 'libtoolize' rule. Cheers, Ralf
