【決定版】GNU Makeの「--version」オプション:詳細解説と使い方

2024-06-18

GNU Makeにおける「--version」オプションの詳細解説

GNU Makeの--versionオプションは、コマンドラインでMakeのバージョン情報とライセンス情報を表示するために使用されます。このオプションは、Makeのインストールを確認したり、特定の機能がサポートされているかどうかを確認したりする際に役立ちます。

構文

make --version

オプション解説

このオプションには追加の引数はありません。

出力例

GNU Make 4.3
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
For more information about copyright, see COPYING.

... (ライセンス情報省略)

補足

  • --versionオプションは、Makeの起動時にのみ使用できます。Makefile内では使用できません。
  • Makeのバージョン情報は、Makefile内のMAKE変数を使用して取得することもできます。

上記以外にも、Makeには様々なコマンドラインオプションが用意されています。詳細はGNU Makeマニュアルを参照してください。



#!/bin/bash

# Check the version of Make
make --version

# Exit the script with a successful exit code
exit 0

This script will print the version and copyright information of the installed Make program to the console. The script will then exit with a successful exit code.

Here is another example of how to use the --version option to check for a specific Make version:

#!/bin/bash

# Check if Make version 4.3 or later is installed
make --version | grep -q '4.3'

if [ $? -eq 0 ]; then
  echo "Make version 4.3 or later is installed"
else
  echo "Make version 4.3 or later is not installed"
  exit 1
fi

This script will print the version and copyright information of the installed Make program to the console. It will then search the output for the string "4.3". If the string is found, the script will print a message to the console stating that Make version 4.3 or later is installed. Otherwise, the script will print a message to the console stating that Make version 4.3 or later is not installed and exit with an unsuccessful exit code.

I hope these examples are helpful. Please let me know if you have any other questions.



Using the MAKE variable

The MAKE variable is a shell variable that contains the path to the Make executable. You can use this variable to get the version information of Make by using the following command:

make -C '' --print-file $MAKE | grep VERSION

This command will print the version information of Make to the console. The -C '' option tells Make to use the current working directory as the build directory. The --print-file option tells Make to print the contents of the specified file to the console. The grep command is used to search the output of Make for the line that contains the version information.

Using the uname command

The uname command can be used to get information about the operating system. You can use the uname command to get the version information of Make by using the following command:

uname -r | grep release

This command will print the release number of the operating system to the console. The grep command is used to search the output of uname for the line that contains the word "release". The release number of the operating system typically includes the version information of Make.

Using a system information tool

There are many system information tools available that can be used to get the version information of Make. For example, you can use the following command on a Linux system to get the version information of Make using the dpkg-query command:

dpkg-query -W 'make' | grep Version

Checking the Makefile

If you are using Make to build a project, you can check the Makefile for the version information of Make. The Makefile may contain a variable that defines the version of Make that is required to build the project. For example, the Makefile may contain the following variable:

MAKE_VERSION := 4.3

If the Makefile contains a variable that defines the required Make version, you can check the version of Make that is installed by using the following command:

make --version | grep ^MAKE

This command will print the version information of Make to the console. The ^MAKE pattern matches the beginning of the line that contains the version information of Make.