#287 unable to build with gcc 10

[Erhard F.]

Unfortunately I was not able to build AdvanceMAME 3.9 on my amd64 Gentoo Box:

[...]
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: obj/mame/linux/blend/misc.a(cavepgm.o):(.bss+0x450): multiple definition of `pgm_mainram'; obj/mame/linux/blend/igs.a(pgm.o):(.bss+0x48): first defined here
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: obj/mame/linux/blend/misc.a(cavepgm.o):(.bss+0x448): multiple definition of `pgm_bg_videoram'; obj/mame/linux/blend/igs.a(pgm.o):(.bss+0x40): first defined here
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: obj/mame/linux/blend/misc.a(cavepgm.o):(.bss+0x438): multiple definition of `pgm_videoregs'; obj/mame/linux/blend/igs.a(pgm.o):(.bss+0x30): first defined here
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: obj/mame/linux/blend/misc.a(cavepgm.o):(.bss+0x440): multiple definition of `pgm_tx_videoram'; obj/mame/linux/blend/igs.a(pgm.o):(.bss+0x38): first defined here
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: obj/mame/linux/blend/misc.a(cavepgm.o):(.bss+0x430): multiple definition of `pgm_rowscrollram'; obj/mame/linux/blend/igs.a(pgm.o):(.bss+0x28): first defined here
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: obj/mame/linux/blend/misc.a(cavepgm.o):(.bss+0x420): multiple definition of `pgm_sprite_a_region_allocate'; obj/mame/linux/blend/igs.a(pgm.o):(.bss+0x10): first defined here
/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: obj/mame/linux/blend/misc.a(cavepgm.o):(.bss+0x428): multiple definition of `pgm_sprite_a_region'; obj/mame/linux/blend/igs.a(pgm.o):(.bss+0x18): first defined here
collect2: error: ld returned 1 exit status
make: *** [advance/emu.mak:719: obj/mame/linux/blend/advmame] Error 1

Found out there is already a downtream Gentoo bug (https://bugs.gentoo.org/706924). There is a hint the build failures may be specific to gcc 10.x.

I also tried building from current git master (https://github.com/amadvance/advancemame) but got the same issue.

[Andrea Mazzoleni]

Hi Erhard F.

The latset commit in the github repository should fix it.

Specifically the commit f8688cae05799a30cd5337e626a07fa9f004c0a3

Ciao,
Andrea

[Erhard F.]

Yes, the commit fixes the issue for git-master and for 3.9. Thanks!