* bug#6039: Emacs 23.1.96 (git HEAD) crashing at startup.
[not found] ` <87hbmplvmk.fsf@stupidchicken.com>
@ 2010-05-10 3:41 ` Vladimir Lomov
0 siblings, 0 replies; only message in thread
From: Vladimir Lomov @ 2010-05-10 3:41 UTC (permalink / raw)
To: Chong Yidong, 6039
Hi.
Sorry for later response.
2010/5/3 Chong Yidong <cyd@stupidchicken.com>:
> Elias Pipping <pipping.elias@googlemail.com> writes:
>
>> Could you make the check and the error message a bit more precise? For
>> example, CFLAGS="-O2 -fno-optimize-sibling-calls" should get through
>> (CFLAGS="-O1 -foptimize-sibling-calls" should not, but that can
>> probably be ignored). It'd also be nice if either the error message or
>> the comments in configure.in referred to this bug.
>
> Sure. Could you test this updated patch?
>
>
> *** configure.in 2010-04-20 01:29:37 +0000
> --- configure.in 2010-05-02 23:38:03 +0000
> ***************
> *** 2600,2605 ****
> --- 2600,2613 ----
> CFLAGS="$REAL_CFLAGS"
> CPPFLAGS="$REAL_CPPFLAGS"
>
> + ## Hack to detect a buggy GCC version.
> + if test "x$GCC" = xyes \
> + && test x"`$CC --version 2> /dev/null | grep 'gcc.* 4.5.0'`" != x \
> + && test x"`echo $CFLAGS | grep '\-O[23]'`" != x \
> + && test x"`echo $CFLAGS | grep '\-fno-optimize-sibling-calls'`" = x; then
> + AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'.])
> + fi
> +
> #### Find out which version of Emacs this is.
> [version=`grep 'defconst[ ]*emacs-version' ${srcdir}/lisp/version.el \
> | sed -e 's/^[^"]*"\([^"]*\)".*$/\1/'`]
>
> *** configure 2010-04-20 01:29:37 +0000
> --- configure 2010-05-02 23:38:37 +0000
> ***************
> *** 25559,25564 ****
> --- 25559,25574 ----
> CFLAGS="$REAL_CFLAGS"
> CPPFLAGS="$REAL_CPPFLAGS"
>
> + ## Hack to detect a buggy GCC version.
> + if test "x$GCC" = xyes \
> + && test x"`$CC --version 2> /dev/null | grep 'gcc.* 4.5.0'`" != x \
> + && test x"`echo $CFLAGS | grep '\-O23'`" != x \
> + && test x"`echo $CFLAGS | grep '\-fno-optimize-sibling-calls'`" = x; then
> + { { $as_echo "$as_me:$LINENO: error: GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'." >&5
> + $as_echo "$as_me: error: GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS'." >&2;}
> + { (exit 1); exit 1; }; }
> + fi
> +
> #### Find out which version of Emacs this is.
> version=`grep 'defconst[ ]*emacs-version' ${srcdir}/lisp/version.el \
> | sed -e 's/^[^"]*"\([^"]*\)".*$/\1/'`
>
Why you check versus O3 option? I checked that with O3 option GCC
4.5.0 compiles emacs (BZR) fine and it works.
Could you please remove this check (actually I rather ask GCC
developers to release a bug fix but they have they own schedule).
P.S. I make custom builds for my Archlinux system (x86_64). Now I use
a patch to remove O3 check so this just a wish.
---
WBR, Vladimir Lomov
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2010-05-10 3:41 ` bug#6039: Emacs 23.1.96 (git HEAD) crashing at startup Vladimir Lomov
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