目录
前言
本文主要介绍全志T113-S3平台官方SDK，buildroot文件系统tar不支持.gz文件解压缩的问题以及如何配置buildroot文件系统解决该问题的方法介绍。
一、现象描述
在buildroot文件系统中，使用tar -xzf UpdateShImage.tgz命令解压UpdateShImage.tgz压缩包报错，tar: invalid option -- 'z'，如提示所示，表示tar不支持使用带z参数解压，如下所示：
cpp
# tar -xzf UpdateShImage.tgz
tar: invalid option -- 'z'
BusyBox v1.29.3 (2023-08-30 11:23:50 CST) multi-call binary.
Usage: tar c|x|t [-hvokO] [-f TARFILE] [-C DIR] [-T FILE] [-X FILE] [--exclude PATTERN]... [FILE]...
Create, extract, or list files from a tar file
c Create
x Extract
t List
-f FILE Name of TARFILE ('-' for stdin/out)
-C DIR Change to DIR before operation
-v Verbose
-O Extract to stdout
-o Don't restore user:group
-k Don't replace existing files
-h Follow symlinks
-T FILE File with names to include
-X FILE File with glob patterns to exclude
--exclude PATTERN Glob pattern to exclude
#二、解决方案
进入buildroot编译输出目录，对busybox进行配置，如下步骤所示：
1、进入buildroot编译输出目录：
cpp
cftc@cftc-ubuntu:t113-s3_V1.1-V2.1$ cd out/t113/evb1_auto/longan/buildroot/
cftc@cftc-ubuntu:buildroot$
cftc@cftc-ubuntu:buildroot$
cftc@cftc-ubuntu:buildroot$ pwd
/home/cftc/workspace/QZ/t113-s3_V1.1-V2.1/out/t113/evb1_auto/longan/buildroot
cftc@cftc-ubuntu:buildroot$
cftc@cftc-ubuntu:buildroot$2、终端输入busybox配置命令， make busybox-menuconfig，进入Archival Utilities --->
[*] Make tar, rpm, modprobe etc understand .gz data ，按空格键选中 .gz data该项即可，如下图所示：
3、busybox配置保存。输入make busybox-update-config即可保存配置文件，如下图所示：
cpp
cftc@cftc-ubuntu:buildroot$
cftc@cftc-ubuntu:buildroot$
cftc@cftc-ubuntu:buildroot$
cftc@cftc-ubuntu:buildroot$ make busybox-update-config
cp -f /home/cftc/workspace/QZ/t113-s3_V1.1-V2.1/out/t113/evb1_auto/longan/buildroot/build/busybox-1.29.3/.config package/busybox/busybox.config
cftc@cftc-ubuntu:buildroot$
cftc@cftc-ubuntu:buildroot$三、tar解压缩.gz文件
使用tar -czf / tar -xzf解压缩文件如下所示：
cpp
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$ tar -czf UpdateShImage.tgz UpdateShImage/
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$ ls -l
total 10568
drwxr-xr-x 2 liubin liubin 4096 10月 23 16:14 UpdateShImage
-rw-rw-r-- 1 liubin liubin 10815835 10月 25 23:01 UpdateShImage.tgz
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$ rm -rf UpdateShImage
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$ tar -zxf UpdateShImage.tgz
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$ ls -l
total 10568
drwxr-xr-x 2 liubin liubin 4096 10月 23 16:14 UpdateShImage
-rw-rw-r-- 1 liubin liubin 10815835 10月 25 23:01 UpdateShImage.tgz
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$
liubin@CompileServer:~/workspace/UpdateShImage/RA1000$总结
修改之后的固件，tar会多出一个参数z (De)compress using gzip，tar zcvf 或tar cvf都可以压缩，执行tar xvf 或者tar zxvf 都可以解压，不要带z也可以解压缩，可能是config里面有CONFIG_FEATURE_TAR_AUTODETECT=y会自动检测。