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#!/bin/bash
set -e
OUT=Makefile.inc
> "${OUT}"
checking() {
printf "checking for %s... " "$1" >&2
}
check() {
checking="$1"
shift
var="${VAR:-${checking^^}}"
cmd="${!var}"
varflags="${var}FLAGS"
varflags="$@ ${!varflags}"
if [[ -z "${cmd}" ]]; then
cmd="${checking}"
fi
get=$(command -v "${cmd}")
e=$?
if [[ -n "$get" ]]; then
echo ${get}
echo ${var} := ${get} ${varflags} >> "${OUT}"
fi
return $e
}
rcheck() {
checking "$1"
if ! check "$@"; then
echo no
return 1
fi
}
ocheck() {
rcheck "$@" || true
}
checking "zopfli or gzip"
VAR=GZIP check zopfli || check gzip -9
rcheck apngasm
rcheck convert
rcheck cwebp -quiet -alpha_cleanup -m 6
rcheck ffmpeg -v warning -y
rcheck npm --quiet
rcheck webpmux
ocheck defluff
ocheck pngquant
ocheck zopflipng
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