# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

pre_src_configure() {
	# catch when multiple pkgs are in one ebuild
	pushd "${WORKDIR}" > /dev/null

	# macOS Big Sur (11.x, darwin20) supports Apple Silicon (arm64),
	# which config.sub currently doesn't understand about.  It is,
	# however, Apple who seem to use arm64-apple-darwin20 CHOST
	# triplets, so patch that for various versions of autoconf
	# This bit should be kept in sync with fix_config_sub in
	# bootstrap-prefix.sh
	# Apple Silicon doesn't use aarch64, but arm64
	find . -name "config.sub" -exec \
		sed -i -e 's/ arm\(-\*\)* / arm\1 | arm64\1 /' {} +
	find . -name "config.sub" -exec \
		sed -i -e 's/ aarch64 / aarch64 | arm64 /' {} +

	# currently the toolchain appears to be a bit funky, and generates
	# code the (host) linker thinks is invalid with -O2 and up:
	# ld: in section __TEXT,__text reloc 442: symbol index out of range
	# file 'src/preproc/refer/refer-label.o' for architecture arm64
	case ${CATEGORY}/${PN} in
		sys-apps/groff |\
		app-editors/vim)
			[[ ${CFLAGS}   == *-O[2-9]* ]] &&   CFLAGS+=" -O1"
			[[ ${CXXFLAGS} == *-O[2-9]* ]] && CXXFLAGS+=" -O1"
		;;
	esac

	popd > /dev/null
}