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Date: Sun, 04 Oct 2020 19:18:09 +0300
Message-Id: <83pn5ydkxq.fsf@gnu.org>
From: Eli Zaretskii <eliz@gnu.org>
To: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: gdb@sourceware.org
In-Reply-To: <alpine.LFD.2.21.2010041648350.333514@eddie.linux-mips.org>
 (macro@linux-mips.org)
Subject: Re: Running selftests in GDB
References: <83h7rimej3.fsf@gnu.org> <83pn65lu67.fsf@gnu.org>
 <alpine.LFD.2.21.2010041648350.333514@eddie.linux-mips.org>
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> Date: Sun, 4 Oct 2020 16:52:29 +0100 (BST)
> From: "Maciej W. Rozycki" <macro@linux-mips.org>
> cc: gdb@sourceware.org
> 
> > Answering myself: after reconfiguring with --enable-unit-tests, one
> > should make sure gdb/init.c is regenerated.  It looks like it won't be
> > regenerated, unless you touch one of the source files mentioned in
> > COMMON_SFILES by gdb/Makefile.
> 
>  It looks like a dependency needs to be added to gdb/Makefile.in for 
> gdb/init.c on whatever is changed with `--enable-unit-tests' that affects 
> the file; can you run a diff on the object tree configured with and 
> without the option to figure out what has changed that affects gdb/init.c?

AFAIR, the object tree didn't change, but SELFTESTS_OBS don't appear
in CONFIG_OBS.  When you reconfigure, SELFTESTS_OBS gets added to
CONFIG_OBS, but there's nothing to trigger init.c regeneration.