linux-kernel - Re: [PATCH 4/9] build: update AC_PACKAGE_WANT

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Date:   Thu, 14 Dec 2017 13:51:02 +0800
From:   Eryu Guan <eguan@...hat.com>
To:     "Luis R. Rodriguez" <mcgrof@...nel.org>
Cc:     fstests@...r.kernel.org, linux-xfs@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/9] build: update AC_PACKAGE_WANT_GDBM() and
 src/dbtest.c to build

On Tue, Dec 12, 2017 at 04:45:14PM -0800, Luis R. Rodriguez wrote:
> Modern gdbm-devel packages bundle together gdbm.h and ndbm.h.
> The old m4 macro had detection support for some old gdbm libraries
> but not for new ones.
> 
> We fix compilation of src/dbtest.c by making the autoconf helper
> check for this new arrangement:
> 
> If both gdbm.h and gdbm.h are found define set both gdbm_ndbm_=true,
                     ^^^^^^ ndbm.h?
> and have_db=true, and define HAVE_GDBM_H. The src/dbtest.c already
> had a HAVE_GDBM_H but there was never a respective autoconf settter for
> it. We can just re-use this and fix it for new arrangement.
> 
> Signed-off-by: Luis R. Rodriguez <mcgrof@...nel.org>

This looks fine to me.

The only system I have by hand that have both <gdbm.h> and <ndbm.h> but
not any <gdbm/[gn]dbm.h> is openSUSE Tumbleweed. Without this patch,
dbtest was not built on openSUSE, and was built successfully with this
patch applied. And dbtest is still built on RHEL6/7 and Fedora.

BTW, I'll queue patch 3 and this patch for next fstests release, while
other patches seem not necessary, I agreed with Dave that groups are not
for excluding tests, the required tools and environments should be
detected by tests and _notrun if not met. (The README change looks fine,
but it doesn't apply due to the "fsgqa-381" change, so I drop it too for
now.)

Thanks,
Eryu