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# SPDX-License-Identifier: MIT
# Copyright (c) 2024 Leah Rowe <leah@libreboot.org>
# debian trixie/sid ship with gcc 14 when running "gcc",
# but (as of December 2024) gnat is gnat-13. we must create
# a symlink accordingly.
# however, the user may also have gcc 13+14, but only gnat 13
check_gnat_path()
{
eval `setvars "" gccver gnatver gccdir`
command -v gcc 1>/dev/null || $err "Command 'gcc' unavailable."
for _util in gcc gnat; do
eval "$_util --version 1>/dev/null 2>/dev/null || continue"
eval "${_util}ver=\"`$_util --version 2>/dev/null | head -n1`\""
eval "${_util}ver=\"\${${_util}ver##* }\""
eval "${_util}ver=\"\${${_util}ver%%.*}\""
done
[ -z "$gccver" ] && $err "Cannot detect host GCC version"
[ "$gnatver" = "$gccver" ] && return 0
gccdir="$(dirname "$(command -v gcc)")"
for _gnatbin in "$gccdir/gnat-"*; do
[ -f "$_gnatbin" ] || continue
[ "${_gnatbin#"$gccdir/gnat-"}" = "$gccver" ] || continue
gnatver="${_gnatbin#"$gccdir/gnat-"}"
break
done
[ "$gnatver" = "$gccver" ] || $err "GCC/GNAT versions do not match."
# we already established that the versions match, but if gnat isn't
# in path, then we assume it's in e.g. /usr/bin/gnat-14
(
x_ cd xbmkpath
for _gnatbin in "$gccdir/gnat"*"-$gccver"; do
[ -e "$_gnatbin" ] || continue
_gnatutil="${_gnatbin##*/}"
ln -s "$_gnatbin" "${_gnatutil%"-$gccver"}" || \
$err "E: ln -s \"$_gnatbin\" \"${_gnatutil%"-$gccver"}\""
done
) || $err "Cannot create gnat-$gccver link in $gccdir"
}
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