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+# Copyright 1999-2026 Gentoo Authors
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+# Distributed under the terms of the GNU General Public License v2
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+
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+EAPI="8"
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+
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+CHOST="avr"
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+CTARGET="avr"
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+
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+inherit flag-o-matic
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+
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+DESCRIPTION="C library for Atmel AVR microcontrollers"
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+HOMEPAGE="https://github.com/avrdudes/avr-libc https://www.nongnu.org/avr-libc/"
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+
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+# Upstream moved from Savannah to GitHub with 2.2.0. The GitHub "release"
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+# tarball ships a pre-generated ./configure and the avr/{lib,devices} trees
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+# (mlib-gen.py output), so no bootstrap / autotools / python is needed to
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+# build it. Manual pages are no longer a separate download; they are built
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+# from the tree only when doxygen is present, which we do not pull in.
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+MY_TAG="avr-libc-$(ver_rs 1- '_')-release"
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+SRC_URI="https://github.com/avrdudes/avr-libc/releases/download/${MY_TAG}/${P}.tar.bz2"
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+
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+LICENSE="BSD"
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+SLOT="0"
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+# 'amd64' is a blessed placeholder for crossdev. It could
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+# be any other arch. See bug #620316#c5
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+# Don't add more arches to KEYWORDS.
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+KEYWORDS="amd64"
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+IUSE="headers-only"
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+
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+DEPEND=">=sys-devel/crossdev-0.9.1"
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+[[ ${CATEGORY/cross-} != ${CATEGORY} ]] \
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+ && RDEPEND="!dev-embedded/avr-libc" \
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+ || RDEPEND=""
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+
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+DOCS="AUTHORS NEWS NEWS.md README.md"
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+
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+pkg_setup() {
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+ # check for avr-gcc, bug #134738
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+ ebegin "Checking for avr-gcc"
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+ if type -p avr-gcc > /dev/null ; then
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+ eend 0
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+ else
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+ eend 1
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+
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+ eerror
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+ eerror "Failed to locate 'avr-gcc' in \$PATH. You can install an AVR toolchain using:"
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+ eerror " $ crossdev -t avr"
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+ eerror
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+ die "AVR toolchain not found"
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+ fi
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+}
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+
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+src_prepare() {
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+ default
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+
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+ # work around broken gcc versions PR45261: drop MCUs the installed
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+ # avr-gcc does not know about so ./configure does not choke on them.
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+ local mcu
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+ for mcu in $(sed -r -n '/CHECK_AVR_DEVICE/{s:.*[(](.*)[)]:\1:;p}' configure.ac) ; do
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+ if avr-gcc -E - -mmcu=${mcu} <<<"" |& grep -q 'unknown MCU' ; then
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+ sed -i "/HAS_${mcu}=yes/s:yes:no:" configure || die
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+ fi
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+ done
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+
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+ strip-flags
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+ strip-unsupported-flags
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+}
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+
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+src_configure() {
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+ # --enable-device-lib builds the per-device lib<mcu>.a / crt<mcu>.o.
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+ # It is on by default with avr-gcc >= 5.1 but be explicit. Docs are
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+ # off by default in 2.2+; keep them off (no doxygen dependency).
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+ econf \
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+ --host=avr \
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+ --enable-device-lib \
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+ --disable-doc
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+}
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+
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+src_install() {
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+ default
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+
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+ # Make sure different cross-compilers don't collide #414075
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+ if [[ -d ${ED}/usr/share/doc/${PF} ]] ; then
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+ mv "${ED}"/usr/share/doc/{${PF},${CTARGET}-${PF}} || die
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+ fi
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+}
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k4be