[Vm-dev] Suspicious typing in Cog VM
frank.shearar at angband.za.org
Wed Dec 8 14:32:35 UTC 2010
On 2010/12/08 13:14, David T. Lewis wrote:
> On Wed, Dec 08, 2010 at 01:57:45PM +0100, Levente Uzonyi wrote:
>> On Wed, 8 Dec 2010, David T. Lewis wrote:
>>> On Wed, Dec 08, 2010 at 11:30:19AM +0300, Aleksej Saushev wrote:
>>>> Types are inconsistent along the source, does Cog VM work on LP64
>>> The README file at the root of the Cog distribution says this:
>>> The Cogit currently supports only x86 and the floating-point
>>> primitives and parts of the platform support code depend on SSE2.
>>> I hope members of the community will attempt to port it, e.g. to
>>> ARM, PowerPC and x86-64.
>>> So no, you should not expect it to work on x86-64. But it should
>>> work if you compile it in 32-bit mode on your x86-64 platform
>>> (i.e. with "-m32" in the CFLAGS and LDFLAGS).
>>> However, I have to admit that I have not yet been able to get
>>> this working on my own 64-bit SuSE Linux box, due to issues
>>> with libtool on my system. I've been assuming that this is a
>>> problem with my Linux system, but I cannot say for sure.
>> IIRC this is a problem on all 64-bit linux platforms. The trick is to add
>> -m32 to CC instead of CFLAGS (CC="gcc -m32").
> Thank you! The CC="gcc -m32" trick is exactly what I was looking for,
> and I can now get a successful build.
> You should be able to do the same thing on FreeBSD, although the
> specifics of compiling 32-bit programs on 64-bit might be different.
> FWIW, the configure command that I used is:
> ../platforms/unix/config/configure CC="gcc -m32" CFLAGS="-g -O2 \
> -msse2 -D_GNU_SOURCE -DNDEBUG -DITIMER_HEARTBEAT=1 -DNO_VM_PROFILE=1 \
> -DCOGMTVM=0 -DDEBUGVM=0" LIBS=-lpthread
I'm getting (on FreeBSD 7.3, gcc 4.2.1) configure failing with "C
compiler cannot create executables", and config.log talking of "exit 77".
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