Need EASY for END-USER install of source code [LWN.net]

Need EASY for END-USER install of source code

Posted Aug 8, 2009 17:39 UTC (Sat) by nix (subscriber, #2304)
In reply to: Need EASY for END-USER install of source code by dwheeler
Parent article: Ubuntu's multisearch surprise

Nice paper.

One point though. You said:

n most software, the "make install" command only uses a few simple commands to actually install the software. In my experience, the most common command by far is "install", which is hardly surprising. Other common commands used in "make install" that might need redirecting from privileged directories (like /bin, /usr, and /etc) include cp, mkdir, ln, mv, touch, chmod, chown, ls, rm, and rmdir.

You forgot the horror which is libtool. That runs the compiler at install time to do a link, so you have to wrap the linker! You may get away without wrapping it if it turns out that it always asks the compiler to put things in the srcdir, and then uses 'install' to move them out.

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Need EASY for END-USER install of source code

Posted Aug 9, 2009 1:35 UTC (Sun) by dwheeler (guest, #1216) [Link] (2 responses)

Nice paper.

Thanks.

You forgot the horror which is libtool. That runs the compiler at install time to do a link, so you have to wrap the linker! You may get away without wrapping it if it turns out that it always asks the compiler to put things in the srcdir, and then uses 'install' to move them out.

Ah, libtool. Well, I'm definitely aware of libtool; I wrote the Program Library HOWTO, after all. But from what I've seen, someone who uses libtool will typically support DESTDIR as well (I speculate that if you're a libtool user, you're probably more interested in portability and thus more likely to support DESTDIR).

And even if that's not true, my current approach can accommodate it anyway. I've ended up deciding that to automate DESTDIR, it's best to simply create "wrappers" of the same name and put their location at the front of the PATH. It seems hackish, but it has absolutely NO security issues, and it runs really quickly. Which means that it is more likely to actually be ACCEPTABLE to distros and users. I haven't tried to wrap libtool (yet), but I think that should work well if it turns out to be necessary. I've already wrapped cp, ln, and so on, and tried them out on several test programs without problems.

Need EASY for END-USER install of source code

Posted Aug 9, 2009 10:26 UTC (Sun) by nix (subscriber, #2304) [Link]

But from what I've seen, someone who uses libtool will typically support DESTDIR as well (I speculate that if you're a libtool user, you're probably more interested in portability and thus more likely to support DESTDIR).

True. A quick audit here shows few examples: APR/apr-util/apache are the primary ones, but we know they're seriously weird to the point of not supporting biarch building without ugly hacks (and they have INSTALL_ROOT which you can use instead). (I mean, keeping around a copy of libtool from your configure process and reusing it in other projects? Ew.)

Auto-DESTDIR released

Posted Aug 17, 2009 18:25 UTC (Mon) by dwheeler (guest, #1216) [Link]

By the way, my "Auto-DESTDIR" program has now been released at http://www.dwheeler.com/auto-destdir - it supports DESTDIR in source installs, even when the original makefile doesn't support DESTDIR. One you have Auto-DESTDIR install, just run make-redir instead of make when you do an install. I.E., use "DESTDIR=... make-redir install" instead of "make install".