Re: libgmp: link to the correct shared library

[Paul Eggert]

On 7/12/20 2:48 PM, Bruno Haible wrote:

> This test fails when I build this gnulib module in my usual way:
>    ./configure --prefix=/PREFIX64 \
>                CPPFLAGS="-I/PREFIX64/include -Wall" \
>                LDFLAGS="-L/PREFIX64/lib"

I don't see why this should be expected to work. Instead, you can tell 
'configure' to pass -rpath to the linker, so that the executable it produces 
runs with the correct libraries. Something like this, say:

    ./configure --prefix=/PREFIX64 \
               CPPFLAGS="-I/PREFIX64/include -Wall" \
               LDFLAGS="-L/PREFIX64/lib -Wl,-rpath=/PREFIX64/lib"

This is a common issue when using dynamically-linked libraries in nonstandard 
locations, and the longstanding way to address the issue is to use -rpath.

>         * modules/libgmp (Depends-on): Add havelib.

This approach requires all libgmp-using packages to also use havelib and do all 
the libtool stuff. Emacs, coreutils etc. build without libtool and I would 
rather not introduce a dependency on libtool to them.