prefix:subpaths macro anyone? i.e. moveable packages

[Guido Draheim]

Hi everyone,

has someone somewhen written some ac-macro to detect the
subpaths of a prefixed installation? The idea is to have
a moveable package where the compilation prefix path is just
the default that can be changed at runtime.

hmm, consider a package named 'foo' that has a bin/foo, 
a lib/libfoo, some shared-files in share/foo/, some docs a.s.o.
The compileprefix may be /usr/local, but the user can move
the package to somewhere else, thereby setting an environment
variable (or a registry key) called FOODIR. Well, currently
I can just make an assumption about the subpaths being ./bin,
./lib, ./share/foo a.s.o, however these could have been 
changed to sth. different during configuration, e.g. let
them point all into a subpath ./foo with an overall prefix
of /programs.

If I look at the current scheme of autoconf/automake, this one
is definitly nothing that is supported as a default idea,
the bindir, libdir, pkglibdir macros all use the complete path,
however,  one can still invent a series of other subpath-ac_substs 
that are detected (!!) from the traditional longpaths. It's just
a kind of lengthy pattern recognition, and may be someone has 
already done it.

thanks in advance,
-- guido                         Edel sei der Mensch, hilfreich und gut
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