11-CURRENT iconv build failures

[CiPHER nl]

Hello,

I'm running FreeBSD 11-CURRENT r262235 (as of this morning) and building Virtualbox from ports (emulators/virtualbox-ose) fails for me.
The Makefile contains USES=iconv. Removing that did not make it use the libiconv from ports instead of base iconv, as i had expected.
Any pointers to how to get this fixed would be welcome. :)


    kBuild: Compiling VBox-kStuffStaticBldProg - /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/libs/kStuff/iprt/kRdrFile-iprt.cpp
    kBuild: Linking VBox-kStuffStaticBldProg
    kBuild: Installing VBox-kStuffStaticBldProg => /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/lib/VBox-kStuffStaticBldProg.a
    kBuild: Compiling scm - /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/bldprogs/scm.cpp
    kBuild: Compiling scm - /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/bldprogs/scmdiff.cpp
    kBuild: Compiling scm - /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/bldprogs/scmrw.cpp
    kBuild: Compiling scm - /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/bldprogs/scmstream.cpp
    kBuild: Compiling scm - /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/bldprogs/scmsubversion.cpp
    kBuild: Linking scm
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/lib/RuntimeBldProg.a(utf8-posix.o): In function `rtstrConvertCached':
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:200: undefined reference to `libiconv'
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:184: undefined reference to `libiconv_open'
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:244: undefined reference to `libiconv_close'
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/lib/RuntimeBldProg.a(utf8-posix.o): In function `rtStrConvertUncached':
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:315: undefined reference to `libiconv_open'
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:330: undefined reference to `libiconv'
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:351: undefined reference to `libiconv_close'
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:340: undefined reference to `libiconv_close'
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/lib/RuntimeBldProg.a(utf8-posix.o): In function `rtStrIconvCacheDestroy':
    /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/src/VBox/Runtime/r3/posix/utf8-posix.cpp:115: undefined reference to `libiconv_close'
    collect2: ld returned 1 exit status
    kmk: *** [/usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/obj/scm/scm] Error 1
    The failing command:
    @g++46                        -m64   -o /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/obj/scm/scm /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/obj/scm/scm.o /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/obj/scm/scmdiff.o /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/obj/scm/scmrw.o /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/obj/scm/scmstream.o /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/obj/scm/scmsubversion.o   -L/usr/local/lib   -lpthread   -lrt   /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/lib/RuntimeBldProg.a   /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/lib/VBox-kStuffStaticBldProg.a   /usr/ports/emulators/virtualbox-ose/work/VirtualBox-4.3.6/out/freebsd.amd64/release/lib/RuntimeBldProg.a   -lpthread   -lssl   -lcrypto
    *** Error code 2
     
    Stop.
    make[1]: stopped in /usr/ports/emulators/virtualbox-ose
    *** Error code 1
     
    Stop.
    make: stopped in /usr/ports/emulators/virtualbox-ose