The tarball files can't be extracted with busybox tar command

[muzuiget]

I am using ubuntu:20.04 docker image, and install the busybox command.

When extract the nghttp2 tarball file on v1.46.0, I got error.

# busybox wget -q https://github.com/nghttp2/nghttp2/releases/download/v1.46.0/nghttp2-1.46.0.tar.gz -O - | busybox tar xz
wget: note: TLS certificate validation not implemented
tar: invalid tar magic

Downloading the bz2/gz/xz files, also doesn't works.

# busybox tar xzf nghttp2-1.46.0.tar.gz 
tar: invalid tar magic
# busybox tar xJf nghttp2-1.46.0.tar.xz 
tar: invalid tar magic
# busybox tar xjf nghttp2-1.46.0.tar.bz2
tar: invalid tar magic

Here is some work situations:

# GNU tar works
busybox wget -q https://github.com/nghttp2/nghttp2/releases/download/v1.46.0/nghttp2-1.46.0.tar.gz -O - | tar xz

# Github create source tarball works
busybox wget -q https://github.com/nghttp2/nghttp2/archive/refs/tags/v1.46.0.tar.gz -O - | busybox tar xz

# Project create tarball from mongo-c-driver works
busybox wget -q https://github.com/mongodb/mongo-c-driver/releases/download/1.19.1/mongo-c-driver-1.19.1.tar.gz -O - | busybox tar xz

So I think is the nghttp2 create a incompatible tarball.

And I found busybox have a build flag for this issue: http://lists.busybox.net/pipermail/busybox/2010-September/073298.html

But not all busybox distribution will enable this flag. So if nghttp2 can create a compatible tarball if should be good.

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