Bug 442784 – =sys-libs/libstdc++-v3-3.3.6 fails at configure due to unrecognized gcc option

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description Vicente Olivert Riera (RETIRED) 2012-11-11 17:13:00 UTC]

I was trying to install =sys-libs/libstdc++-v3-3.3.6 and it failed because I was using a gcc option not available for gcc-3.3.6. This option is very common because it's used to check if CFLAGS and CXXFLAGS are mixed: https://bugs.gentoo.org/show_bug.cgi?id=234011#c0

I'm talking about "-Wno-pointer-sign"

Adding "filter-flags -Wno-pointer-sign" in the ebuild fixes the problem.

I'm not sure, but I think that option was added to gcc in the version 4.0: http://gcc.gnu.org/ml/gcc-patches/2005-01/msg00505.html

Maybe it would be a good idea to collect what options has been added after 3.3.6 and filter all of them. Or maybe not..., you choose :-P

[Comment 1 Vicente Olivert Riera (RETIRED) 2013-04-05 10:42:20 UTC]

In 30 days I will add "filter-flags -Wno-pointer-sign" to the ebuild and I will close this bug, if you don't have any objection.

[Comment 2 Ryan Hill (RETIRED) 2013-04-06 21:02:02 UTC]

I don't know about "very common", but go ahead.

[Comment 3 Vicente Olivert Riera (RETIRED) 2013-04-07 00:24:35 UTC]

(In reply to comment #2)
> I don't know about "very common", but go ahead.

Done.

[Comment 4 SpanKY 2013-04-10 18:23:51 UTC]

(In reply to comment #2)

yeah, it's not common at all.  you also only updated libstdc++-v3-3.3.6.ebuild which isn't the latest.

i dropped your change and updated it to filter all -W flags.  none of them really make sense with this.

[Comment 5 SpanKY 2013-04-10 18:26:01 UTC]

Commit message: Filter all -W flags
http://sources.gentoo.org/sys-libs/libstdc++-v3/libstdc++-v3-3.3.6-r1.ebuild?r1=1.3&r2=1.4
http://sources.gentoo.org/sys-libs/libstdc++-v3/libstdc++-v3-3.3.6.ebuild?r1=1.28&r2=1.29