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IIRC, IVs must be big enough to hold a pointer
I've compiled perl with 32 bit IVs on 64-bit Windows 7, Debian Wheezy(ppc64), and freebsd-12.0. But yes, ptrsize then needs to be 4 bytes, and I assume there must also be some mechanism ensuring that addresses of all allocated memory fit into 4 bytes. I suspect that, with the right toolchain, I could also achieve such a build on Ubuntu, but I'm not going to chase that up right now. I was hoping that there might have been some simple trick I could use - hence my initial question. On the freebsd system, the 32-bit build was achieved by simply passing -Dcc="cc -m32" to Configure. When I build perl on the Debian system, I (strangely) get 32-bit builds by default, though the system perl is 64-bit. So I pass -Dcc="gcc -m64" to Configure in order to get the 64-bit builds there. On Windows, it's just a case of using a 32-bit toolchain and ensuring that the WIN64=undef arg is provided to make. Cheers, Rob In reply to Re^2: How to build perl-5.32.0 (or later) with ivsize of 4 on Ubuntu-20.04 ?
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