From: Round Robinjp <roundrobinjp@yahoo.co.jp>
Subject: Re: flashing large eMMC partitions with ext4
Date: Wed, 10 Aug 2011 01:05:29 +0900 (JST)
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Cc: Dilger Andreas <aedilger@gmail.com>, Ted Ts'o <tytso@mit.edu>,
	"linux-ext4@vger.kernel.org" <linux-ext4@vger.kernel.org>
To: Goldstein Amir <amir73il@gmail.com>
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Amir

> https://raw.github.com/amir73il/e2fsprogs-snapshots/next4-stable/contrib/uninit_bg.c
> 
> amir@qalab:~$ gcc -o uninit_bg -lext2fs uninit_bg.c

For me, it gives error:

$ gcc -o uninit_bg -lext2fs uninit_bg.c
uninit_bg.c: In function ‘main’:
uninit_bg.c:105:2: error: invalid use of undefined type ‘struct opaque_ext2_group_desc’
uninit_bg.c:105:5: warning: assignment from incompatible pointer type
$

I have the latest source code from
git://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git
but nowhere I can find the full declaration of
struct opaque_ext2_group_desc.

Am I missing something?
I didn't want to bother you for this, but I could not
solve the puzzle.

Thanks
Round