Builds fine in a clean chroot. On Wed, 20 Jun 2018, notify@aur.archlinux.org wrote:

gspu [1] filed a orphan request for lesstif [2]:

Don't compile Maintainer makes no changes have the same problem as:

petronny commented on 2017-10-12 07:52 I'm already building it with extra-x86_64-build.

And I still get "/usr/bin/ld: cannot find -lXm"

Please add CFLAGS="$CFLAGS -L${srcdir}/${pkgname}-${pkgver}/lib/Xm-2.1/.libs" before ./configure

Works also for me

[1] https://aur.archlinux.org/account/gspu/ [2] https://aur.archlinux.org/pkgbase/lesstif/