Instalando Qt-creator

>> +++ >>> (13/22) sci-physics/root-5.34.09
>> ## Desempacotando: sci-physics:root-5.34.09.fec926e7a96fcb55e1493b1634a04479a6199c24~0.tbz2
>> ## Fase do Pacote: setup

* Please install currently selected gcc version with USE=fortran.
* If you intend to use a different compiler then gfortran, please
* set FC variable accordingly and take care that the neccessary
* fortran dialects are support.

* ERROR: sci-physics/root-5.34.09 failed (setup phase):
* Currently no working fortran compiler is available
*
* Call stack:
* ebuild.sh, line 93: Called pkg_setup
* environment, line 2899: Called fortran-2_pkg_setup
* environment, line 1987: Called _fortran_test_function
* environment, line 608: Called _fortran_die_msg
* environment, line 597: Called die
* The specific snippet of code:
* die "Currently no working fortran compiler is available"
*
* If you need support, post the output of `emerge --info '=sci-physics/root-5.34.09'`,
* the complete build log and the output of `emerge -pqv '=sci-physics/root-5.34.09'`.
* The complete build log is located at '/var/tmp/entropy/packages/amd64/5/sci-physics_root-5.34.09.fec926e7a96fcb55e1493b1634a04479a6199c24_0.tbz2/portage/sci-physics/root-5.34.09/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/entropy/packages/amd64/5/sci-physics_root-5.34.09.fec926e7a96fcb55e1493b1634a04479a6199c24_0.tbz2/portage/sci-physics/root-5.34.09/temp/environment'.
* Working directory: '/usr/lib64/portage/pym'
* S: '/var/tmp/entropy/packages/amd64/5/sci-physics_root-5.34.09.fec926e7a96fcb55e1493b1634a04479a6199c24_0.tbz2/portage/sci-physics/root-5.34.09/work/root-5.34.09'
>> ## QA: Não foi possível executar Fase setup, Phase terminated with exit status: 1. Por favor reporte isto.