Re: Stop "relink" searching host directory when installation prefix provided

[Ralf Wildenhues]

Hello Martin,

* Martin Panter wrote on Sun, Jan 16, 2011 at 01:04:00PM CET:
> Don't search host directory during "relink" if $inst_prefix is provided

> --- libtool-2.4.orig/libltdl/config/ltmain.m4sh
> +++ libtool-2.4/libltdl/config/ltmain.m4sh
> @@ -6122,12 +6122,14 @@ func_mode_link ()
>             fi
>           else
>             # We cannot seem to hardcode it, guess we'll fake it.
> -           add_dir="-L$libdir"
> -           # Try looking first in the location we're being installed to.
> +           
> +           # Default if $libdir is not relative to the prefix:
> +           add_dir="-L$libdir"
> +           
>             if test -n "$inst_prefix_dir"; then
>               case $libdir in
>                 [\\/]*)
> -                 func_append add_dir " -L$inst_prefix_dir$libdir"
> +                 add_dir="-L$inst_prefix_dir$libdir"
>                   ;;
>               esac
>             fi

Wouldn't it also suffice to just prepend instead of append
-L$inst_prefix_dir$libdir?  If no, why not?

Asking because I'm fairly sure not everybody uses DESTDIR for cross
compilation and assumes that the target directory is no-go land for
us.  (I for one often do 'make install DESTDIR=/tmp/dest' merely to
tar up the installation tree to be scp'ed to another machine where
the NFS share is mounted rw.)

I haven't looked into this in detail yet, but thanks for the good
writeup and the many references.  We need testsuite exposure for
this.

Cheers,
Ralf