需要 openSUSE Tumbleweed ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/devel:gcc:next/openSUSE_Tumbleweed/devel:gcc:next.repo
zypper refresh
zypper install cross-rx-gcc15-bootstrap
需要 openSUSE Factory RISCV ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/devel:gcc:next/openSUSE_Factory_RISCV/devel:gcc:next.repo
zypper refresh
zypper install cross-rx-gcc15-bootstrap
需要 openSUSE Factory PowerPC ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/devel:gcc:next/openSUSE_Factory_PowerPC/devel:gcc:next.repo
zypper refresh
zypper install cross-rx-gcc15-bootstrap
需要 openSUSE Factory ARM ，用 root 執行：
zypper addrepo https://download.opensuse.org/repositories/devel:gcc:next/openSUSE_Factory_ARM/devel:gcc:next.repo
zypper refresh
zypper install cross-rx-gcc15-bootstrap