bug#14594: depcomp missing from Makefile.in in AM 1.13.3

[Jeff Squyres (jsquyres)]

Attached is a trivial reproducer showing that Automake is not including depcomp 
in the generated Makefile.in, which therefore results in a "make dist" tarball 
being un-buildable.  I have tested with Automake 1.13.3, which I just 
downloaded from ftp.gnu.org and built myself (paired with Autoconf 2.69).

Three things seem to be necessary for this to happen:

1. configure.ac identifies itself as a foreign project (i.e., 
AM_INIT_AUTOMAKE([foreign]))
2. The source files must not be in the root (i.e., src/hello.c, not hello.c)
3. depcomp is not present when you run autoreconf

Specifically: the first time you run autoreconf -ivf (e.g., when you get a 
fresh/clean checkout of a project), depcomp is generated as expected, but it is 
*not* included in the Makefile.in.  However, if you run autoreconf -ivf a 
second time, depcomp is then included in Makefile.in.

Instructions for the reproducer:

1. Untar the tarball; cd into automake-1.13.3-bug
2. Run the "./run" script, which does the following:

    rm -f depcomp missing install-sh
    autoreconf -ivf
    grep depcomp Makefile.in
    # Notice that depcomp is not listed in Makefile.in
    # Now run autoreconf a second time
    autoreconf -ivf
    grep depcomp Makefile.in
    # Notice that depcomp is now listed in Makefile.in

-- 
Jeff Squyres
address@hidden
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automake-1.13.3-bug.tar.bz2
Description: automake-1.13.3-bug.tar.bz2