>>>  '/var/tmp/portage/media-libs/shaderc-2023.2/temp/build.log'

* Messages for package media-libs/shaderc-2023.2:

* ERROR: media-libs/shaderc-2023.2::gentoo failed (compile phase):
*   ninja -v -j12 -l0 failed
*
* Call stack:
*     ebuild.sh, line  136:  Called src_compile
*   environment, line 3410:  Called cmake-multilib_src_compile
*   environment, line 1202:  Called multilib-minimal_src_compile
*   environment, line 2342:  Called multilib_foreach_abi 'multilib-minimal_abi_src_compile'
*   environment, line 2609:  Called multibuild_foreach_variant '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile'
*   environment, line 2302:  Called _multibuild_run '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile'
*   environment, line 2300:  Called _multilib_multibuild_wrapper 'multilib-minimal_abi_src_compile'
*   environment, line  543:  Called multilib-minimal_abi_src_compile
*   environment, line 2336:  Called multilib_src_compile
*   environment, line 2832:  Called cmake_src_compile
*   environment, line 1313:  Called cmake_build
*   environment, line 1282:  Called eninja
*   environment, line 1732:  Called die
* The specific snippet of code:
*       "$@" || die -n "${*} failed"
*
* If you need support, post the output of `emerge --info '=media-libs/shaderc-2023.2::gentoo'`,
* the complete build log and the output of `emerge -pqv '=media-libs/shaderc-2023.2::gentoo'`.
* The complete build log is located at '/var/tmp/portage/media-libs/shaderc-2023.2/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/media-libs/shaderc-2023.2/temp/environment'.
* Working directory: '/var/tmp/portage/media-libs/shaderc-2023.2/work/shaderc-2023.2_build-abi_x86_64.amd64'
* S: '/var/tmp/portage/media-libs/shaderc-2023.2/work/shaderc-2023.2'

↳ sudo USE="-shaderc" emerge mpv           

后有一个media-libs/libplacebo  新增加 但是无法编译

在编译re2c 后我重新编译  dev-util/ninja       还是无法解决报错问题，估计是这个维护者拉屎了