Re: [PATCH] Use ldconfig to generate sys_lib_dlsearch_path_spec

[Pavel Raiskup]

On Friday 05 of December 2014 12:11:57 Gary V. Vaughan wrote:
> > Yes, we can use ac_cv_.... workaround globally, but that is not
> > ideal as this turns off the ld.so.conf parsing in libtool (which works
> > pretty well to reimplement).
> > 
> > ... so yet another idea.  What about have some API environment variable
> > _enhancing_ the library path detected by libtool?
> 
> Great idea!  Yes, that is a good middle ground without any safety concerns on
> my part; I'd be very happy to apply a patch along those lines.

Iteration #0.  Patch (for discussion, not push) implementing configure
time PREPEND_LIB_DLSEARCH_PATH variable.  Possible enhancements for future
could be {APPEND_,}LIB_DLSEARCH_PATH and
{,APPEND_,PREPEND_}LIB_SEARCH_PATH.

Questions:
* Is the name good-enough?  Any namespace should be used?
* should I use AC_ARG_VAR rather?

Benefits would be:
* No need to touch ac_cv_* at least for our (Fedora) case.
* Can be easily set in ${prefix}/share/config.site.
* Does not break libtool's dlsearch path guesses.
* Avoiding hard-wiring list of $host_cpu.
* Should be fully backward compatible.

Thoughts?

Pavel

prepend-lib-dlsearch-path.patch
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