Re: FYI: branch-1-5: SCO/bugfix patch 7 of 10: Improve SCO platform support

[Kean Johnston]

> - You change shlibpath_overrides_runpath depending on the linker.
>   This makes little sense, as this is a rtld feature, not a ld one.
>   Is there a rationale to this?
Yes indeed :)

And the interpretation of LD_LIBRARY_PATH is an RTLD feature,
but both the SVR4 and GNU ld use it during actual library creation.
See the man page Tim pointed you at, and the code in
binutils/ld/emultempl/elf32.em. The reason it changes based on
link editor is that the SVR4/OSR5 ld looks at LD_LIBRARY_PATH
first, then at any DT_RUNPATH or DT_RPATH entries its found
along the way. In GNU ld, that order is reversed, hence with
GNU ld, setting LD_LIBRARY_PATH really doesn't override
DT_RUNPATH whereas on OSR5/SVR4, it really does. Without this,
two tests, I believe the rebuild ones, fail, and tell you to
set shlibpath_overrides_runpath to no (when using GNU ld).

Kean