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Re: gnulib/tests/utimecmp.c:183: undefined reference to `hash_insert'


From: Richard W.M. Jones
Subject: Re: gnulib/tests/utimecmp.c:183: undefined reference to `hash_insert'
Date: Mon, 18 Jun 2012 11:44:08 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

On Mon, Jun 18, 2012 at 12:33:36PM +0200, Jim Meyering wrote:
> [libtool-kill-dependency_libs.sh]
> That looks promising.
> Can you easily refrain from using that when building gnulib's own tests?

I've removed that now.  Still happens.

However I think this could be a bug in libtool (from RHEL 5).

Here is the linking rule in gnulib/tests/Makefile.am:

  test_futimens_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME)

LDADD is defined as:

  LDADD = libtests.a ../../gnulib/lib/libgnu.la libtests.a $(LIBTESTS_LIBDEPS)
          ^^ NB ^^

Here is the final command that gets executed:

  /bin/sh ../../libtool --tag=CC --mode=link gcc  -g -O2   -o test-futimens  
test-futimens.o libtests.a ../../gnulib/lib/libgnu.la libtests.a  -lrt 
  gcc -g -O2 -o test-futimens test-futimens.o  ../../gnulib/lib/.libs/libgnu.a 
libtests.a -lrt  

Notice that the first 'libtests.a' is erased by libtool.  If my
understanding is correct, it is the first 'libtests.a' which would
resolve this missing dependency.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines.  Supports shell scripting,
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