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armbian-next: bring find_toolchain() back from the dead; force SKIP_EXTERNAL_TOOLCHAINS=no to force use external toolchains

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- handle a lot of corner cases, some toolchains are i386-only and won't run on modern x64 systems
This commit is contained in:
Ricardo Pardini
2022-12-23 12:40:01 +01:00
parent 39ac9e00b1
commit 9200a2ce0c
1 changed files with 52 additions and 7 deletions
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59
lib/functions/compilation/utils-compilation.sh
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@@ -43,34 +43,79 @@ find_toolchain() {
echo "/usr/bin"
return
}
local compiler=$1
local expression=$2
local dist=10
display_alert "SKIP_EXTERNAL_TOOLCHAINS=no, Searching for toolchain" "'${compiler}' '${expression}'" "warn"
local toolchain=""
# extract target major.minor version from expression
local target_ver
target_ver=$(grep -oE "[[:digit:]]+\.[[:digit:]]" <<< "$expression")
display_alert "Searching for toolchain" "'${compiler}' '${expression}': target_ver: '${target_ver}'" "debug"
for dir in "${SRC}"/cache/toolchain/*/; do
display_alert "Checking toolchain" "${dir}" "debug"
local gcc_bin="${dir}bin/${compiler}gcc"
# check if is a toolchain for current $ARCH
[[ ! -f ${dir}bin/${compiler}gcc ]] && continue
if [[ ! -f "${gcc_bin}" ]]; then
display_alert "Can't find compiler" "'${dir}' :: '${gcc_bin}" "debug"
continue
else
display_alert "Found compiler" "'${dir}' :: '${gcc_bin}" "debug"
fi
declare gcc_bin_info
gcc_bin_info="$(file "${gcc_bin}" || true)"
display_alert "Testing toolchain" "'${gcc_bin}': '${gcc_bin_info}'" "debug"
# get toolchain major.minor version
local gcc_ver
gcc_ver=$("${dir}bin/${compiler}gcc" -dumpversion | grep -oE "^[[:digit:]]+\.[[:digit:]]")
declare gcc_ver_simple
gcc_ver_simple="$("${gcc_bin}" -dumpversion 2>&1 || true)" # this might fail: toolchain can't run on current host
display_alert "Checking version" "'${gcc_ver_simple}' for '${gcc_bin}'" "debug"
if [[ "x${gcc_ver_simple}x" == "xx" ]]; then
display_alert "Can't obtain version" "'${gcc_bin}' for '${gcc_bin}': '${gcc_ver_simple}'" "debug"
continue
fi
declare gcc_ver
gcc_ver="$(echo "${gcc_ver_simple}" | grep -oE "^[[:digit:]]+\.[[:digit:]]" || true)" # this might fail to parse
if [[ "x${gcc_ver}x" == "xx" ]]; then
display_alert "Can't parse version" "'${gcc_bin}' for '${gcc_bin}': '${gcc_ver_simple}': '${gcc_ver}'" "debug"
continue
fi
display_alert "Found working toolchain" "'${gcc_bin}' gcc_ver_simple:'${gcc_ver_simple}' gcc_ver:'${gcc_ver}'" "debug"
# check if toolchain version satisfies requirement
awk "BEGIN{exit ! ($gcc_ver $expression)}" > /dev/null || continue
if ! awk "BEGIN{exit ! ($gcc_ver $expression)}" > /dev/null; then
display_alert "Toolchain version" "'${gcc_bin}' '${gcc_ver}' doesn't satisfy '${expression}'" "debug"
continue
fi
# check if found version is the closest to target
# may need different logic here with more than 1 digit minor version numbers
# numbers: 3.9 > 3.10; versions: 3.9 < 3.10
# dpkg --compare-versions can be used here if operators are changed
local d
declare d
d=$(awk '{x = $1 - $2}{printf "%.1f\n", (x > 0) ? x : -x}' <<< "$target_ver $gcc_ver")
if awk "BEGIN{exit ! ($d < $dist)}" > /dev/null; then
dist=$d
toolchain=${dir}bin
dist="$d"
toolchain="${dir}bin"
display_alert "Found toolchain" "'${gcc_bin}' ver:'${gcc_ver}' expression:'${expression}' dist:'${dist}'" "debug"
fi
done
display_alert "Using toolchain" "${toolchain}" "info"
echo "$toolchain"
}
# overlayfs_wrapper <operation> <workdir> <description>
#
# <operation>: wrap|cleanup