no more gif problem + nice surprise

[Alexandre Oliva]

On Apr 18, 1999, Maksim Lin <maksim at swin.edu.au> wrote:

> Alexandre Oliva wrote:

>> Kaffe's configure script looks for both libgif and libungif, and links
>> with both of them.  I'm not sure this is right, though; we should
>> probably not look for one of them if we find the other.  But I don't
>> know which one is to be preferred, does anybody?

> No I meant both versions 3 & 4 of _only_ libungif, here's what I mean:

The problem is that

/usr/lib/libgif.so -> libgif.so.3 -> libgif.so.3.0.0 -> libungif.so.3.0.0

The SONAME (i.e., the name ld.so will look for) of libgif.so is
libungif.so.3, and Kaffe *will* link with -lgif even if it does not
meet its needs.  We should probably drop the search for libgif from
configure.in, and search for some libungif function that's *not*
available in version 3, so that we don't use -lungif unless we know
it's the appropriate version.  Then we'll be able to drop the
header-file-check hack, which we can't always trust anyway.  If
there's no new function in libungif.so.4, we could perform the
header-file check and, only if it succeeds, look for libungif.

-- 
Alexandre Oliva http://www.dcc.unicamp.br/~oliva IC-Unicamp, Brasil
{oliva,Alexandre.Oliva}@dcc.unicamp.br  aoliva@{acm.org,computer.org}
oliva@{gnu.org,kaffe.org,{egcs,sourceware}.cygnus.com,samba.org}
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