[gentoo] установка 2 версий gcc

#COMPILERS
if [ -f ${ROOT}/etc/portage/package.compilers ]; then
  while read target ver; do
   if [ "${target}" = "${CATEGORY}/${PN}" ]; then
    MY_GCC="$(find /usr/$MACHTYPE/gcc-bin/ -name "$ver*")"
    export ROOTPATH="${MY_GCC}:${ROOTPATH}"
    export PATH="${MY_GCC}:${PATH}"
    export LIBRARY_PATH="$(gcc-config -L):${LIBRARY_PATH}"
   fi
  done < ${ROOT}/etc/portage/package.compilers
fi