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

Manual.md: note that gnu-configure build_style should be for autotools
https://github.com/void-linux/void-packages/pull/40817

Description:
as is indicated in the configure/gnu-configure build_style scripts:

https://github.com/void-linux/void-packages/blob/c33c4b5974e14bc9bacf1b37a846a4633ec7cf80/common/build-style/configure.sh#L2-L3