X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f
X-Recipient: djgpp AT delorie DOT com
Date: Sun, 22 Apr 2012 05:51:40 +0300
From: Eli Zaretskii <eliz AT gnu DOT org>
Subject: Re: Difficulties compiling emacs with gcc 4.6.2
In-reply-to: <201204212330.14769.juan.guerrero@gmx.de>
X-012-Sender: halo1 AT inter DOT net DOT il
To: Juan Manuel Guerrero <juan DOT guerrero AT gmx DOT de>
Cc: djgpp AT delorie DOT com
Message-id: <83d370h41v.fsf@gnu.org>
References: <201204090011 DOT 41565 DOT juan DOT guerrero AT gmx DOT de> <83pqbh8l2i DOT fsf AT gnu DOT org> <201204212330 DOT 14769 DOT juan DOT guerrero AT gmx DOT de>
Reply-To: djgpp AT delorie DOT com
Errors-To: nobody AT delorie DOT com
X-Mailing-List: djgpp AT delorie DOT com
X-Unsubscribes-To: listserv AT delorie DOT com
Precedence: bulk

> From: Juan Manuel Guerrero <juan DOT guerrero AT gmx DOT de>
> Date: Sat, 21 Apr 2012 23:30:13 +0200
> Cc: djgpp AT delorie DOT com
> 
> gcc -c  -Demacs -DHAVE_CONFIG_H  -I. -I.           -O2 -gcoff -save-temps      xdisp.c
> xdisp.s: Assembler messages:
> xdisp.s:31360: Error: CFI instruction used without previous .cfi_startproc
> xdisp.s:31362: Error: CFI instruction used without previous .cfi_startproc
> xdisp.s:31363: Error: CFI instruction used without previous .cfi_startproc
> xdisp.s:31365: Error: CFI instruction used without previous .cfi_startproc
> xdisp.s:31366: Error: CFI instruction used without previous .cfi_startproc
> xdisp.s:31370: Error: .cfi_endproc without corresponding .cfi_startproc
> xdisp.s: Error: open CFI at the end of file; missing .cfi_endproc directive

I guess COFF debug info generation by GCC bit-rotted.  I suggest to
file a bug report with the GCC bug-tracker.

> Is there any reason why -gcoff is used to compile the code in /src directory?

Yes.  If you use DWARF-2, the resulting binary of Emacs after dumping
segfaults when invoked.  Or at least that's what happened last time I
tried (which was a long time ago, admittedly).