# GNU make(1) completion
# have make || have gmake || have gnumake || have pmake &&
_make()
{
	local file makef makef_dir="." makef_inc cur prev i

	COMPREPLY=()
	cur=`_get_cword`
	prev=${COMP_WORDS[COMP_CWORD-1]}

	# --name value style option
	case $prev in
		-@(f|o|W))
			_filedir
			return 0
			;;
		-@(I|C))
			_filedir -d
			return 0
			;;
	esac

	# --name=value style option
	if [[ "$cur" == *=* ]]; then
		prev=${cur/=*/}
		cur=${cur/*=/}
		case "$prev" in
			--@(file|makefile))
				_filedir
				return 0
				;;
			--@(directory|include-dir))
				_filedir -d
				return 0
				;;
		esac
	fi

	if [[ "$cur" == -* ]]; then
		COMPREPLY=( $( compgen -W '-b -m -B -C -d -e -f -h -i -I\
			-j -l -k -n -o -p -q -r -R - s -S -t -v -w -W \
			--always-make --directory= --debug \
			--environment-overrides --file= --makefile= --help \
			--ignore-errors --include-dir= --jobs --load-average \
			--max-load --keep-going --just-print --dry-run \
			--recon --old-file= --assume-old= --print-data-base \
			--question --no-builtin-rules --no-builtin-variables \
			--silent --quiet --no-keep-goind --stop --touch \
			--version --print-directory --no-print-directory \
			--what-if= --new-file= --assume-new= \
			--warn-undefined-variables' -- $cur ) )
	else
		# before we check for makefiles, see if a path was specified
		# with -C
		for (( i=0; i < ${#COMP_WORDS[@]}; i++ )); do
			if [[ ${COMP_WORDS[i]} == -C ]]; then
				# eval for tilde expansion
				eval makef_dir=${COMP_WORDS[i+1]}
				break
			fi
		done

		# make reads `GNUmakefile', then `makefile', then `Makefile'
		if [ -f ${makef_dir}/GNUmakefile ]; then
			makef=${makef_dir}/GNUmakefile
		elif [ -f ${makef_dir}/makefile ]; then
			makef=${makef_dir}/makefile
		elif [ -f ${makef_dir}/Makefile ]; then
			makef=${makef_dir}/Makefile
		else
			makef=${makef_dir}/*.mk	       # local convention
		fi

		# before we scan for targets, see if a Makefile name was
		# specified with -f
		for (( i=0; i < ${#COMP_WORDS[@]}; i++ )); do
			if [[ ${COMP_WORDS[i]} == -f ]]; then
				# eval for tilde expansion
				eval makef=${COMP_WORDS[i+1]}
				break
			fi
		done

		[ ! -f $makef ] && return 0

		# deal with included Makefiles
 		makef_inc=$( grep -E '^-?include' $makef | sed -e "s,^.* ,"$makef_dir"/," )

 		for file in $makef_inc; do
 			[ -f $file ] && makef="$makef $file"
 		done

		COMPREPLY=( $( awk -F':' '/^[a-zA-Z0-9][^$#\/\t=]*:([^=]|$)/ \
				{split($1,A,/ /);for(i in A)print A[i]}' \
				$makef 2>/dev/null | command grep "^$cur" ))
	fi
} &&
complete -f -F _make $filenames make gmake gnumake pmake

# vim:filetype=sh