Re: LD_LIBRARY_PATH vs rpath and libtool

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Hi Ingvar,

On Thursday, March 28, 2019 11:58:21 AM CET Ingvar Hagelund wrote:
> Fedora prohibits the use of rpath, ref 
> https://docs.fedoraproject.org/en-US/packaging-guidelines/#_beware_of_rpath
> 
> When compiling varnish with litbool, I ensure this by the usual
> 
> sed -i 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g;
>         s|^runpath_var=LD_RUN_PATH|runpath_var=DIE_RPATH_DIE|g' libtool

With new enough libtool script, you can use this instead:

    %configure LT_SYS_LIBRARY_PATH=%_libdir

or if that makes sense in your case:

    %configure LT_SYS_LIBRARY_PATH=%_libdir:

This is unfortunately needed because it is not easy to detect whether the
linker uses /usr/lib64 path by default.  Ideas?  Libtool attempts to parse
ld.so.conf & friends, but the desired info isn't there....

> However, during build and check, I need access to a library in the build. For
> example, the test suite uses the binary varnishtest to access
> libvarnishapi.so.2, which is not visible as the package is not installed yet.

If you use the LT_SYS_LIBRARY_PATH instead DIE_RPATH_DIE the tests should
just work.

> I have gotten around this by putting in LD_LIBRARY_PATH where I need,
> but rpmlint gives me a warning on that.

Can you post the warnings?  I've been using LD_LIBRARY_PATH in %check for
quite some time [1], and rpmlint did not complain...

> Are there other possibilities to solve this?

Report that to rpmlint so they don't complain in %check?  Push to rpmlint
upstream to implement ignore file?

[1] https://src.fedoraproject.org/rpms/libarchive/c/f64e33e456d935e34f6202449cecb9eb00136436?branch=master

Pavel


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