[D-runtime] druntime and 64-bit build

[Walter Bright]

Jonathan M Davis wrote:
> Is the druntime posix.mak makefile not set up for a 64-bit build? I can't figure 
> out how to make it build a 64-bit version, and it doesn't seem to have a lib32 
> and lib64 directory or anything similar.
>
> Looking at Phobos' posix.mak makefile, it looks like you build with MODEL=64, and 
> it will do the 64-bit build and put the library in generated/linux/debug/64 
> instead of generated/linux/debug/32 ( or generated/release/... for release). But 
> if druntime isn't built as 64-bit, then I don't see as how you could build 
> Phobos that way. druntime is obviously being built and run as 64-bit on the 
> autotester, but I haven't a clue how.
>
> What do I need to do to build druntime as 64-bit, and do the makefiles need 
> updating?
>   

Here's what I use to build and test on linux. (To make things more 
convenient, I use makefiles that just forward to -f posix.mak, and 
account for the different directory structure than is used on github.) 
The salient point is that in between 32 and 64 bit druntime builds, a 
'clean' is run. This is different from phobos building.


if ./unzipall
then
if make clean
then
if make dmd
then
strip -s dmd
if cd druntime
then
if make clean
then
if make
then
if cd ../phobos
then
if make clean
then
if make
then
if make unittest
then
if cd ../druntime
then
if make clean MODEL=64
then
if make MODEL=64
then
if cd ../phobos
then
if make MODEL=64
then
if make unittest MODEL=64
then
cd ../test
shell -j linux.sh
fi
fi
fi
fi
fi
fi
fi
fi
fi
fi
fi
fi
fi
fi
fi
fi