maintainer-feedback requested: [Bug 244777] emulators/qemu-user-static-devel: Fix build with lld 10.0.0

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Bugzilla Automation <bugzilla at FreeBSD.org> has asked freebsd-emulation mailing
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Bug 244777: emulators/qemu-user-static-devel: Fix build with lld 10.0.0
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244777



--- Description ---
As reported in bug 244251, with clang and lld 10.0.0 the
emulators/qemu-user-static-devel port fails in the configure stage:

===>  Configuring for qemu-user-static-devel-3.1.0_3

ERROR: We need to link the QEMU user mode binaries at a
       specific text address. Unfortunately your linker
       doesn't support either the -Ttext-segment option or
       printing the default linker script with --verbose.
       If you don't want the user mode binaries, pass the
       --disable-user option to configure.

===>  Script "configure" failed unexpectedly.
Please report the problem to emulation at FreeBSD.org [maintainer] and attach
the
"/wrkdirs/usr/ports/emulators/qemu-user-static-devel/work/qemu-bsd-user-e21442a
/config.log"
including the output of the failure of your make command. Also, it might be
a good idea to provide an overview of all packages installed on your system
(e.g. a /usr/local/sbin/pkg-static info -g -Ea).
*** Error code 1

This is because lld 10.0.0 no longer supports the -Ttext-segment option, and
uses --image-base for similar functionality.

I am proposing a patch that makes the configure script check for the
--image-base option first, then the -Ttext-segment option.