Run any shell command through Make environment

Makefile

# The following section enables users to execute arbitrary commands
# under Makefile environment. Users are expected run commands with
# 'make run' prefix. For example,
#
# $ make run go env
#
# Users can pass command-line options as follows:
#
# $ make run -- ls -l
#
# NOTE: As per http://savannah.gnu.org/bugs/?712 GNU Make doesn't
# handle spaces well, so this trick doesn't work when command
# arguments have spaces. For example, the following doesn't work:
#
# $ make run -- ls "file name"     ## DOESN'T WORK
#
ifeq ($(firstword $(MAKECMDGOALS)),run)
.SILENT:
.PHONY: $(MAKECMDGOALS)
$(wordlist 2, 1024, $(MAKECMDGOALS)): ;
run: $(wordlist 2, 1024, $(MAKECMDGOALS))
	$^
endif