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A helper script to print make variables
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#!/usr/bin/env bash | |
# Inspired by <http://blog.melski.net/2010/11/30/makefile-hacks-print-the-value-of-any-variable/> | |
usage() { | |
echo >&2 "Usage: $0 [-f makefile] variables..." | |
echo >&2 | |
echo >&2 "Optional arguments:" | |
echo >&2 " -f makefile: path to the makefile" | |
echo >&2 | |
echo >&2 "Positional arguments:" | |
echo >&2 " variables...: one or more names of variables to print" | |
} | |
printenv_make=$(cat <<'MAKE' | |
debugprint-%: | |
@echo '$*=$($*)' | |
@echo ' origin = $(origin $*)' | |
@echo ' flavor = $(flavor $*)' | |
@echo ' value = $(value $*)' | |
MAKE | |
) | |
if [ "$1" == "-f" ]; then | |
shift | |
filename="$1" | |
shift | |
else | |
filename="" | |
if [ -f GNUMakeFile ]; then | |
filename=GNUMakeFile | |
elif [ -f makefile ]; then | |
filename=makefile | |
elif [ -f Makefile ]; then | |
filename=Makefile; | |
fi | |
if [ ! -n "$filename" ]; then | |
echo >&2 "No makefile found" | |
exit 1 | |
fi | |
fi | |
if [ $# -eq 0 ]; then | |
usage | |
exit 1 | |
fi | |
vars=() | |
for var in "$@"; do | |
vars+=("debugprint-$var") | |
done | |
make -f <(echo "$printenv_make") -f "$filename" "${vars[@]}" |
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