rsync - Nov 2015 - [Bug 11594] New: unnecessary build time dependency (mkproto.pl, perl)

https://bugzilla.samba.org/show_bug.cgi?id=11594

            Bug ID: 11594
           Summary: unnecessary build time dependency (mkproto.pl, perl)
           Product: rsync
           Version: 3.1.2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: core
          Assignee: wayned at samba.org
          Reporter: petar at smokva.net
        QA Contact: rsync-qa at samba.org

When building rsync from its distfile,

   perl ./mkproto.pl ./*.c ./lib/compat.c

will always run, even though up-to-date versions of proto.h and
proto.h-tstamp are provided by the distfile.

The reason is the following target:

   proto.h-tstamp: $(srcdir)/*.c $(srcdir)/lib/compat.c config.h
           perl $(srcdir)/mkproto.pl $(srcdir)/*.c $(srcdir)/lib/compat.c

which declares config.h (created by the configure script, obviously
always newer than the proto.h file provided by the distfile) as its
source without actually using the file.

Removing config.h from the list of proto.h-tstamp sources eliminates 
the need for perl when building rsync from its distfile.

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