librt and libpthread in alternate prefix
Mike Frysinger
vapier@gentoo.org
Fri May 15 02:28:00 GMT 2009
On Thursday 14 May 2009 22:25:49 Poor Yorick wrote:
> Mike Frysinger wrote:
> > On Thursday 14 May 2009 21:06:49 Poor Yorick wrote:
> >> Mike Frysinger wrote:
> >> > On Thursday 14 May 2009 20:00:36 Poor Yorick wrote:
> >> >> Mike Frysinger wrote:
> >> >> > On Tuesday 12 May 2009 10:15:16 Poor Yorick wrote:
> >> >> >> Mike Frysinger wrote:
> >> >> >> > On Monday 11 May 2009 23:34:16 Poor Yorick wrote:
> >> >> >> >> Because my goal is to build a software collection in an
> >> >> >> >> alternate library path which uses its own glibc, I'm trying
> >> >> >> >> to get the new loader to work from the alternate location
> >> >> >> >> without setting --library-path.
> >> >> >> >
> >> >> >> > so use a wrapper script that builds paths using $0
> >> >> >>
> >> >> >> That's a kludge that doesn't work well, since wrapper scripts
> >> >> >> aren't suitable for the #! line.
> >> >> >
> >> >> > i dont really know what you're talking about here. #!/bin/sh
> >> >> > works just fine.
> >> >>
> >> >> I mean that I can't wrap binaries compiled against the alternate
> >> >> glibc in a script that calls the real binary using the new loader.
> >> >> For example, if I wrap awk in a script called awk_new, I can't do
> >> >> this:
> >> >>
> >> >> !# /path/to/alternate/awk_new
> >> >>
> >> >> because the !# mechanism requires a binary, not a script.
> >> >
> >> > your wrapper is a script that executes the right ldso with the right
> >> > paths. use #!/bin/sh like normal.
> >>
> >> If this is what you had in mind (awk being a wrapper for the real awk):
> >>
> >> #! /bin/sh /path/to/alternate/bin/awk
> >
> > i dont know why you keeping going down this line of logic. you said
> > you're concerned with running different libs and that's it.
> > #!/bin/sh
> > ${0%/*}/ld.so .....
>
> This is not acceptable, because if this script is called "awk", users will
> expect to be able to do this:
>
> #! /path/to/alternate/bin/awk
>
> and they will get a "permission denied" error, because now awk is just a
> script (wrapping the real awk) instead of an executable. On the #! line,
> the second item must be binary executable, not a script.
i really havent a clue wahat you're talking about. whatever.
-mike
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