Armbian/build脚本分析

Thu, 06 Jun 2024 13:44:10 +0800

1. 脚本目录检测和代码健壮性保证

1.1 程序报错退出脚本

#set -o pipefail # trace ERR through pipes - will be enabled "soon"
#set -o nounset ## set -u : exit the script if you try to use an uninitialised variable - one day will be enabled
set -e
set -o errtrace # trace ERR through - enabled
set -o errexit ## set -e : exit the script if any statement returns a non-true return value - enabled
# Important, go read http://mywiki.wooledge.org/BashFAQ/105 NOW!

1.2. ./compile.sh脚本目录检测

SRC="$(dirname "$(realpath "${BASH_SOURCE[0]}")")"
cd "${SRC}" || exit
# check for whitespace in ${SRC} and exit for safety reasons
grep -q "[[:space:]]" <<< "${SRC}" && {
echo "\"${SRC}\" contains whitespace. Not supported. Aborting." >&2
exit 1
}

2. single.sh 文件加载（位于./lib）

2.1 检查bash版本是否高于5.x

# The Armbian functions require Bash 5.x.
if [[ "${BASH_VERSINFO:-0}" -lt 5 ]]; then
echo "Armbian build scripts require Bash 5.x. Go get it..." >&2
if [[ "${OSTYPE}" == "darwin"* ]]; then
echo "Armbian build scripts require brew to be installed and working on macOS. (old Bash version)" >&2
echo "Please install brew, *restart your terminal*." >&2
echo "Then run 'brew install bash coreutils git', *restart your terminal* and then try again." >&2
exit 51
fi
exit 50
fi

2.2 macOS系统检查

是否以root运行脚本
Homebrew 包管理器已安装并正常工作
通过 Homebrew 的 coreutils 安装的 realpath 命令是否可用
更新 PATH 环境变量以包含由 Homebrew 安装的 GNU coreutils 二进制文件。
确保 ${SRC} 变量（应指向构建脚本的源目录）位于用户的主目录中。这对于 macOS 上的 Docker 兼容性很重要。

系统构建 on Laning's Blog

Armbian/build脚本分析

1. 脚本目录检测和代码健壮性保证

1.1 程序报错退出脚本

1.2. ./compile.sh脚本目录检测

2. single.sh 文件加载（位于./lib）

2.1 检查bash版本是否高于5.x

2.2 macOS系统检查