There's a closed pull request on the void-packages repository

gcc: enable secureplt for powerpc and remove redundant option
https://github.com/void-linux/void-packages/pull/12037
Description: Secureplt is already matched in our crosstoolchains, it was just forgotten in the main template. Also remove the with-long-double option as it's already handled by one of our patches and is therefore redundant. Similarly, --with-cpu is also unnecessary.