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@balping
Forked from alexdelorenzo/get-cflags.sh
Last active May 19, 2022 19:11
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Get native CFLAGS for your host device. This will list the flags that are enabled on your hardware that are not enabled on the parent arch. https://alexdelorenzo.dev/notes/cflags
#!/usr/bin/env bash
# See: https://alexdelorenzo.dev/notes/cflags
# License: AGPLv3
export detectedArch="$(gcc -march=native -Q --help=target | grep march | awk 'NR==1{print $2}')"
export arch="${1:-$detectedArch}"
get-diff() {
diff \
<(gcc -march=native -mtune=native -Q --help=target) \
<(gcc -march=$arch -Q --help=target)
}
get-flags() {
grep "<" | grep "enabled" | awk '{print $2}' \
| while read flag; do
printf "%s " "$flag"
done
printf '\n'
}
get-diff | get-flags
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