[Vm-dev] another GCC issue?
stephane ducasse
stephane.ducasse at gmail.com
Tue Apr 3 19:57:07 UTC 2012
Indeed!
Stef
On Apr 3, 2012, at 7:05 PM, Igor Stasenko wrote:
>
> Well, i am a bit far from knowing why compiler fails to compile it or
> where.. my main problem in last 3 hours was to get gcc working.
>
> The problem is that Xcode 4.3 are not including GCC-4.2 by default..
> nor the "command-line tools" addon.
>
> I spent 2 hours installing/reinstalling the stuff and found the best
> way is to install it from here:
> https://github.com/kennethreitz/osx-gcc-installer
>
> Also, i was also forced to change the path to SDKs:
>
> sudo xcode-select -switch
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer
>
> then after
> export CC=/usr/bin/gcc-4.2
>
> cmake can build VM using right version of compiler...
>
> what a mess...
>
>
> On 3 April 2012 18:47, John M McIntosh <johnmci at smalltalkconsulting.com> wrote:
>>
>> This existed pre-cog I did talk to apple's llvm folks who told me to figure out where the compiler creates the bad code. Oh sure... Perhaps you could take a pre cog/stack vm from 2 years back and confirm it's broken before smacking them with extras like alloca, code generation etc..
>>
>> Sent from my iPhone
>>
>> On Apr 3, 2012, at 12:24 PM, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>>
>>
>>
>> On Tue, Apr 3, 2012 at 8:29 AM, Igor Stasenko <siguctua at gmail.com> wrote:
>>>
>>>
>>> ok i found why: i was using llvm compiler, not vanilla gcc.
>>>
>>> but we should make it work on llvm eventually,
>>
>>
>> I agree, and I put some effort into this, managing to get something that starts up at -O1 (I think) but not at -O2 (or at -O0 but not at -O1). I *think* this might be a bug in llvm, because the Cogit is pretty aggressive in its use of alloca. I should try and make a report for the llvm maintainers. Either I'll find out I've made a mistake or they'll fix the bug ;) Biut finding the time is as always the issue :)
>>
>>
>>>
>>> since Apple seems to be
>>> dropping support of old gcc compilers:
>>>
>>> http://stackoverflow.com/questions/8707367/using-gcc-not-llvm-gcc-with-mac-os-x-lion
>>>
>>> --
>>> Best regards,
>>> Igor Stasenko.
>>
>>
>>
>>
>> --
>> best,
>> Eliot
>>
>>
>
>
>
> --
> Best regards,
> Igor Stasenko.
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