Can a recent Mame ver. be compiled on a 32 bit PC?

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#124278 02/27/25 07:20 PM

Joined: Sep 2021

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stef-ux

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stef-ux

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Joined: Sep 2021

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Hello, trying to compile Mame 0.270 on Linux 32 bit I get the following error message:

Code

Compiling src/emu/uiinput.cpp...
Compiling src/emu/validity.cpp...
../../../../../src/emu/validity.cpp: In function ‘void {anonymous}::validate_integer_semantics()’:
../../../../../src/emu/validity.cpp:179:38: error: static assertion failed: PTR64 flag enabled, but was compiled for 32-bit target

  179 |         static_assert(sizeof(void *) == 8, "PTR64 flag enabled, but was compiled for 32-bit target\n");
      |                       ~~~~~~~~~~~~~~~^~~~
make[2]: *** [emu.make:1410: ../../../../linux_gcc/obj/x64/Release/src/emu/validity.o] Error 1
make[1]: *** [Makefile:94: emu] Error 2
make: *** [makefile:1290: linux_x64] Error 2

Can that PTR64 flag be disabled?

Re: Can a recent Mame ver. be compiled on a 32 bit PC? stef-ux #124279 02/27/25 09:17 PM
Joined: Feb 2014 Posts: 1,180 Likes: 215 G Golden Child Very Senior Member
Golden Child Very Senior Member G Joined: Feb 2014 Posts: 1,180 Likes: 215	well you can try to set PTR64=0 in the makefile to see if that will work knoppix (livecd/liveflash based on debian) will compile mame264 and that is based on i386 packages and 32bit. It hasn't been updated for 3 years which is why it won't compile anything more recent than 264, because of changes needing a new compiler version. Last edited by Golden Child; 02/27/25 09:20 PM.

Re: Can a recent Mame ver. be compiled on a 32 bit PC? stef-ux #124282 02/28/25 11:15 AM
Joined: Feb 2004 Posts: 2,626 Likes: 332 Sydney, Australia Vas Crabb Very Senior Member
Vas Crabb Very Senior Member Joined: Feb 2004 Posts: 2,626 Likes: 332 Sydney, Australia	I build every MAME release for 32-bit i686 Linux. What actual make command are you using? Just something like `make PTR64=0 TOOLS=1` without any other options works.

Re: Can a recent Mame ver. be compiled on a 32 bit PC? Vas Crabb #124283 02/28/25 12:54 PM
Joined: Sep 2021 Posts: 41 Likes: 3 S stef-ux Member
stef-ux Member S Joined: Sep 2021 Posts: 41 Likes: 3	Originally Posted by Golden Child well you can try to set PTR64=0 in the makefile to see if that will work knoppix (livecd/liveflash based on debian) will compile mame264 and that is based on i386 packages and 32bit. It hasn't been updated for 3 years which is why it won't compile anything more recent than 264, because of changes needing a new compiler version. I'm using Slackware 32 bit kernel 5.15, I've chosen 0.270 coz I've been able to build it successfully on the 64 bit version of Slack, gcc 11.2.0. Originally Posted by Vas Crabb I build every MAME release for 32-bit i686 Linux. What actual make command are you using? Just something like `make PTR64=0 TOOLS=1` without any other options works. The command I've used is: Code make SOURCES=src/mame/pc,src/mame/hp,src/mame/sgi I'll try adding PTR64=0 TOOLS=1. Thank you so much. Last edited by stef-ux; 02/28/25 12:55 PM.

Re: Can a recent Mame ver. be compiled on a 32 bit PC? stef-ux #124284 02/28/25 02:29 PM
Joined: Feb 2004 Posts: 2,626 Likes: 332 Sydney, Australia Vas Crabb Very Senior Member
Vas Crabb Very Senior Member Joined: Feb 2004 Posts: 2,626 Likes: 332 Sydney, Australia	You should compile the 32-bit binary on an equivalent 64-bit system if possible (same libc, libstdc++, SDL2, etc.). Install the 32-bit development library packages on your 64-bit system, compile on the 64-bit system, and copy the binary to the 32-bit system. The 64-bit compiler will be substantially faster. What’s your actual reason for wanting MAME on a 32-bit system? Performance takes a pretty big hit.

Re: Can a recent Mame ver. be compiled on a 32 bit PC? Vas Crabb #124291 03/01/25 10:22 AM
Joined: Sep 2021 Posts: 41 Likes: 3 S stef-ux Member
stef-ux Member S Joined: Sep 2021 Posts: 41 Likes: 3	Originally Posted by Vas Crabb You should compile the 32-bit binary on an equivalent 64-bit system if possible (same libc, libstdc++, SDL2, etc.). Install the 32-bit development library packages on your 64-bit system, compile on the 64-bit system, and copy the binary to the 32-bit system. The 64-bit compiler will be substantially faster. Yes, it's what I'm doing. My main PC is a 64 bit i5 10600 32 Gb RAM box running Slackware 15_64. It has a multilib 32 bit environment to build 32 bit programs. The settings you suggested just worked, thank you so much. Quote What’s your actual reason for wanting MAME on a 32-bit system? Performance takes a pretty big hit. In short: coz I'm a poor (old) boy I'm not interested in running performing games but just old OSs and the relevant software. On my 64 bit PC I'm running some machines and would like to run them on my Pentium IV 32 bit PC as well, though with some efforts. It would be a sort of backup PC, in case the main one got broken. I got a ten of old PCs an I'm trying to get them communicate each other. I've installed Tinycore Linux (kernel 6) on my Pentium 166 PC and thanks to a USB 1.1 port I've been able to run wifi and tethering on it, downloading stuffs via my mobile phone. Thst's all. Last edited by stef-ux; 03/01/25 10:22 AM.
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