[Vm-dev] Suspicious typing in Cog VM

Frank Shearar frank.shearar at angband.za.org
Thu Dec 9 10:00:56 UTC 2010

On 2010/12/09 01:42, Pierce Ng wrote:
> On Wed, Dec 08, 2010 at 02:32:35PM +0000, Frank Shearar wrote:
>>> FWIW, the configure command that I used is:
>>>    ../platforms/unix/config/configure CC="gcc -m32" CFLAGS="-g -O2 \
>>>    -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".
> On FreeBSD you need to install the 32 bit libraries, which will go into
> /usr/lib32. Then set CC="gcc -m32 -B/usr/lib32". However, it still doesn't
> compile cleanly on 7.3 amd64: I get errors like these (that don't occur
> when compiling on a 7.3 x86):

Ah! -B/usr/lib32 did the trick!

> - pageMask undeclared (sqUnixMemory.c)
> - PROT_READ undeclared (ditto)
> - etc.
> The other day I posted on how to compile Cog on 32bit FreeBSD. I left out
> the parts about fixing type mismatches (int in .h and sqInt in .c, etc.)
> because these need to be done on Linux and OSX (via unixbuild) as well, so
> it didn't occur to me to mention them. Once you fix these, you should be
> able to get Cog running on FreeBSD 7.3 x86.
> HTH.

"etc" will include things like "conflicting types for 
'readImageFromFileHeapSizeStartingAt'", yes?

So yes, right now I can configure, but can't compile.

I'll fiddle some more in the meanwhile. Thanks!


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