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Re: Unable to find libgif/libungif on RHEL 6

From: Paul Eggert
Subject: Re: Unable to find libgif/libungif on RHEL 6
Date: Thu, 10 Sep 2015 11:36:09 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0

Kaushal Modi wrote:
Something else is not right in my system.. but at least I am glad I can
still build emacs, be it without gif.

Yes, that's what I do. Your other problems can undoubtedly be fixed by using the proper combination of environment variables and configure options, though these days it's typically not worth the trouble.

can we not have LIBGIF_CFLAGS and LIBGIF_LIBS?

It'd be a pain, as LIBOTF_CFLAGS is generated automatically by configure.ac via EMACS_CHECK_MODULES via PKG_CHECK_MODULES via pkg-config, but libgif typically isn't packaged and so we'd have to do a lot of stuff by hand in configure.ac. This what we did ten or twenty years ago but nowadays it's typically not worth the trouble. Builders who care about this and are expert enough can set env vars and configure options accordingly, which is about the best that can be expected for this messy area.

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