在執行期取得目前Makefile腳本檔所在的目錄 Absolute Path of current Makefile 含測試結果

範例程式取得Makefile所在絕對路徑 (Absolute Path of current Makefile)

	current_mk_abspathname := $(abspath $(lastword $(MAKEFILE_LIST)))
	current_mk_absdir := $(dir $(current_mk_abspathname))
	all:
	@echo "Makefile absolute pathname: $(current_mk_abspathname)" ; \
	echo "Makefile absolute path: $(current_mk_absdir)"

view raw 01-abspath-mk.mk hosted with ❤ by GitHub

test results on linux

	/build$ make -v
	GNU Make 4.1
	Built for x86_64-pc-linux-gnu
	Copyright (C) 1988-2014 Free Software Foundation, Inc.
	License GPLv3+: GNU GPL version 3 or later
	This is free software: you are free to change and redistribute it.
	There is NO WARRANTY, to the extent permitted by law.
	/build$ lsb_release -a
	No LSB modules are available.
	Distributor ID: Ubuntu
	Description: Ubuntu 16.04.4 LTS
	Release: 16.04
	Codename: xenial
	/build$ make -f 2019-03-21/01-abspath-mk.mk
	Makefile absolute pathname: /build/2019-03-21/01-abspath-mk.mk
	Makefile absolute path: /build/2019-03-21/

view raw test_result_on_linux_01-abspath-mk hosted with ❤ by GitHub

參考

- https://www.systutorials.com/241620/how-to-get-the-full-path-and-directory-of-a-makefile-itself/

Bash Tip - Run Command with multiple arguments with ssh

This is a note for logging my simple way to use ssh and bash with continuous integration on remote server.

You can execute the following test-cases.sh on your host.

It will execute remote script of the test with correct argument contents.

source code of test-cases.sh on host

	#/bin/bash
	# 2019 Ben Wei <ben@juluos.org>
	#
	# This is a example script for CI tests for blog
	# if not defined in environment variable
	# you can use the following command to defined it
	#
	# export TEST_SSH_HOST="your_ssh_host"
	#
	function run_cases()
	{
	local case_name="$1"
	local args=""
	while [ ! "x$1" = "x" ]; do
	printf -v __ %q "$1"
	args="$args \"$__\""
	shift
	done
	if [ "x${TEST_SSH_HOST}" = "x" ]; then
	TEST_SSH_HOST=test-server
	fi
	ssh ${TEST_SSH_HOST} "cd test-cases; /bin/bash ./tests.sh $args"
	return $?
	}

view raw test-cases.sh hosted with ❤ by GitHub

directory layout of tester account on test-server

source code of tests.sh on test-server

	#!/bin/bash
	i=1
	while [ ! "x$1" = "x" ]; do
	echo "argv[$i]=[$1]"
	shift
	i=$((i + 1))
	done

view raw tests.sh hosted with ❤ by GitHub

result of test-cases.sh example

source ./test-cases.sh

➜  ~ run_cases "\"1\"\"" "b'\"" "c'#\"" "\"\"" "\'"

ssh test-server cd test-cases; /bin/bash ./tests.sh  "\"1\"\"" "b\'\"" "c\'\#\"" "\"\"" "\\'"

argv[1]=["1""]

argv[2]=[b\'"]

argv[3]=[c\'\#"]

argv[4]=[""]

argv[5]=[\\']

Notes

printf %q  is use to make safe quote the argument if hashtag(#), quote('), double quote(") and so on.

Appendix

• wikipedia - Bash_(Unix_shell)
• Bash Guide for Beginners -- Machtelt Garrels