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#!/bin/sh
# Copyright © Tavian Barnes <tavianator@tavianator.com>
# SPDX-License-Identifier: 0BSD
# Print a message from a makefile:
#
# $ make -s
# $ make
# [ CC ] src/main.c
# $ make V=1
# cc -Isrc -Igen -D...
set -eu
# Get the $MAKEFLAGS from the top-level make invocation
MFLAGS="${XMAKEFLAGS-${MAKEFLAGS-}}"
# Check if make should be quiet (make -s)
is_quiet() {
# GNU make puts single-letter flags in the first word of $MAKEFLAGS,
# without a leading dash
case "${MFLAGS%% *}" in
-*) : ;;
*s*) return 0 ;;
esac
# BSD make puts each flag separately like -r -s -j 48
for flag in $MFLAGS; do
case "$flag" in
# Ignore things like --jobserver-auth
--*) continue ;;
# Skip variable assignments
*=*) break ;;
-*s*) return 0 ;;
esac
done
return 1
}
# Check if make should be loud (make V=1)
is_loud() {
test "$XV"
}
MSG="$1"
shift
if ! is_quiet && ! is_loud; then
printf '%s\n' "$MSG"
fi
if [ $# -eq 0 ]; then
exit
fi
if is_loud; then
printf '%s\n' "$*"
fi
exec "$@"
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