Hi Ruben and Mathieu,
On 4/22/2018 1:13 AM, Mathieu Lirzin wrote:
Hello Reuben,
Reuben Thomas <r...@sc3d.org> writes:
In the manual, we are given the following pattern for using help2man
without breaking make distcheck:
foo.1: foo.c $(top_srcdir)/configure.ac
$(MAKE) $(AM_MAKEFLAGS) foo$(EXEEXT)
help2man --output=foo.1 ./foo$(EXEEXT)
The problem is that with make -j this can result in two attempts to
make a library in parallel (suppose that we have:
foo_LDADD = libfoo.la
lib_LTLIBRARIES = libfoo.la
). This can fail, and in any case is wasteful.
Have you identified the reason why this can fail? because
One problem is that the rule for foo.1 can be triggered before
foo.$(EXEEXT) exists and the rule needs foo.$(EXEEXT) or help2man will
fail. In a -j1 build this is never a problem as binaries are built
before man pages.
When the 'missing' script changed behaviour in Automake 1.13 (and became
useless imvho), we changed the rule in one project so foo.1 depended on
foo.$(EXEEXT) but not if we are 1) building from a tarball and 2)
foo.$(EXEEXT) exists.
http://dev.thep.lu.se/svndigest/browser/trunk/man/Makefile.am
Cheers,
Peter