[Freeswitch-users] Autopsy of GCC 4.6.3 compilation bug on Raspberry Pi (FS-6494 and FS-6524)

[Steven Ayre]

>
> Currently I don't think there are checks in the FreeSWITCH build system
> that would bail on known bad architectures and compiler version

combinations.


Since it's based on Debian, are you building for Raspbian directly from
source (ie running make) or via .deb packages? If the latter then
debian/control can require a minimum gcc version in the Build-Depends header


On 16 June 2014 00:45, William King <william.king at quentustech.com> wrote:

> This particular bug was pretty fickle. You could change a handful of
> items in that block of code and the bug would not replicate(or at least
> not in the same way). Building FreeSWITCH with GCC 4.7.2, which is the
> latest version of gcc available on Raspbian, didn't replicate the same
> issue.
>
> I've now filed it against Raspbian as well:
> https://bugs.launchpad.net/raspbian/+bug/1330270
>
> Since the bug doesn't reproduce with 4.7.2, this particular issue is now
> an educational exercise. A potential follow up would be to use a cross
> compilation setup and git bisect between the RTL commits(of which there
> are 206 between 4.6.3 and 4.7.2) and see if there is one that provides
> more insight into the root cause.
>
> Currently I don't think there are checks in the FreeSWITCH build system
> that would bail on known bad architectures and compiler version
> combinations.
>
> After digging into this issue I'm now curious which compiler(and
> version) the major distros are using to build the release packages.
>
> Also it appears which gcc version used by default in Debian Wheezy
> depends on the architecture: i386 and amd64 use 4.7 by default, while
> all others use 4.6.
>
> William King
> Senior Engineer
> Quentus Technologies, INC
> 1037 NE 65th St Suite 273
> Seattle, WA 98115
> Main:   (877) 211-9337
> Office: (206) 388-4772
> Cell:   (253) 686-5518
> william.king at quentustech.com
>
> On 06/14/2014 11:03 PM, Steve Underwood wrote:
> > On 06/15/2014 04:42 AM, William King wrote:
> >> http://quentusrex.com/freeswitch-raspberrypi-gcc-compiler-bug.html
> >>
> > Does an up to date GCC do the same thing? If it does, you should have
> > reported against that. If it doesn't, you should report against the
> > distros, telling them to update to something that works. Nobody is going
> > to fix an old compiler, so it is pointless reporting bugs against it.
> >
> > Regards,
> > Steve
> >
> >
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>
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>
> 
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