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#15323 closed enhancement (duplicate)

Upgrade GCC 4.8 series spkg to 4.8.2

Reported by:	jpflori	Owned by:
Priority:	major	Milestone:	sage-duplicate/invalid/wontfix
Component:	packages: optional	Keywords:
Cc:		Merged in:
Authors:	Jean-Pierre Flori	Reviewers:
Report Upstream:	N/A	Work issues:
Branch:		Commit:
Dependencies:		Stopgaps:

Description (last modified by jpflori)

A straightforward replacement of the src dir (and cleaning up with spkg-src) seems enough. Note that:

#14460 (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56982) is not fixed
it fails on Cygwin because libbacktrace passes -Werror which errors out as -fPIC is also passed but results in a warning (and so an error with -Werror) on Cygwin We need to configure it with --disable-werror, see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56057 .

New spkg at http://boxen.math.washington.edu/home/jpflori/spkg/gcc-4.8.2.spkg

It seems this is currently an experimental spkg, maybe it could be moved to optional?

Attachments (1)

gcc-4.8.2.diff (1.1 KB) - added by jpflori 5 years ago.: Spkg diff, for review only.

Download all attachments as: .zip

Change History (23)

comment:1 Changed 5 years ago by vbraun

Authors set to Jean-Pierre Flori

Do you have a spkg url? ;-) Does it work on the git directory layout?

comment:2 Changed 5 years ago by jpflori

No url yet, just a dirty spkg.

What's the requirement for the git layout? That everything not in the "upstream" tarball (which can be stripped, include additional files) is tracked?

comment:3 Changed 5 years ago by vbraun

yes, see also the existing examples.

comment:4 Changed 5 years ago by jpflori

Description modified (diff)

It did not seem to me that the spkg needed special treatment for the git layout though I have no access to a git install these days so I might be wrong.

Use spkg at http://boxen.math.washington.edu/home/jpflori/spkg/gcc-4.8.2.spkg

Tested on Cygwin and Ubuntu.

Changed 5 years ago by jpflori

Attachment gcc-4.8.2.diff added

Spkg diff, for review only.

comment:5 Changed 5 years ago by jpflori

Status changed from new to needs_review

Even though I've set the permission right on the spkg on boxen, the link gives me a 403 error. Maybe some magic caching issue somewhere deep in the internet.

comment:6 Changed 5 years ago by jdemeyer

You forgot to change the version number in SPKG.txt.

The only reason it's experimental is because it hasn't been tested on many systems and because the requirement of having a C++ compiler is an extra step compared to GCC-4.7.x.

Last edited 5 years ago by jdemeyer (previous) (diff)

comment:7 Changed 5 years ago by jdemeyer

Also, I would pass --disable-werror everywhere (it can't hurt on other systems, right?)

comment:8 follow-up: ↓ 9 Changed 5 years ago by jpflori

Passing --disable-werrror shouldn't hurt, but a priori it is only needed on Cygwin. So it could only let relevant (and unexpected) warnings pass unnoticed on other systems. I don't have a strong opinion about that though.

spkg update with correct version number.

comment:9 in reply to: ↑ 8 Changed 5 years ago by jdemeyer

Replying to jpflori:

I don't have a strong opinion about that though.

I have had bad experiences with -Werror in the past, where a perfectly fine program refused to compile because of a harmless warning. I believe that -Werror should never be used by default. It is useful for maintainers of a package to check their compilation, but only for this.

comment:10 Changed 5 years ago by jpflori

Let's pass it everywhere then.

Please don't download the spkg right now.

comment:11 Changed 5 years ago by jpflori

Status changed from needs_review to needs_work

Hum, looking backa t my virtual machine seems to indicate that --disable-werror is still broken anyway... Note that http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56057 was assessing the contrary. So I might need to include a more involved patch as I originally did for my personal use.