Usermode qemu-mips64 does not run on 32 bit i686 hosts

[Yi Zhao]

Hi,

The usermode qemu-mips64 fails to execute on 32 bit hosts with this error:
"Address overflow loading ELF binary"

This issue can be reproduced when building Yocto project on i686 hosts.

Yocto version: 2.1 (krogoth branch)
qemu: 2.5
gobject-introspection: 1.46

and
Yocto version: 2.2 (master/branch)
qemu: 2.6
gobject-introspection: 1.48

Host: Fedora 23 (i686) or Debian 8 (i686)

Steps:
1. Set MACHINE = "qemumips64"
2. Run bitbake gobject-introspection

I got some errors like below:

env PATH=".libs:/buildarea/poky/build/tmp/sysroots-uninative/i686-linux/usr/bin:/buildarea/poky/build/tmp/sysroots/i686-linux/usr/bin/python3-native:/buildarea/p oky/scripts:/buildarea/poky/build/tmp/sysroots/i686-linux/usr/bin/mips64-poky-linux:/buildarea/poky/build/tmp/sysroots/qemumips64/usr/bin/crossscripts:/buildarea /poky/build/tmp/sysroots/i686-linux/usr/sbin:/buildarea/poky/build/tmp/sysroots/i686-linux/usr/bin:/buildarea/poky/build/tmp/sysroots/i686-linux/sbin:/buildarea/ poky/build/tmp/sysroots/i686-linux/bin:/buildarea/poky/scripts:/buildarea/poky/bitbake/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games" /buildarea/p oky/build/tmp/work/mips64-poky-linux/gobject-introspection/1.48.0-r0/build/g-ir-scanner-qemuwrapper ./.libs/g-ir-compiler --includedir=../gobject-introspection-1 .48.0 --includedir=../gobject-introspection-1.48.0/gir --includedir=. --includedir=. --includedir=./gir --includedir=. ../gobject-introspection-1.48.0/gir/freety pe2-2.0.gir -o gir/freetype2-2.0.typelib
./.libs/g-ir-compiler: Address overflow loading ELF binary
If the above error message is about missing .so libraries, then setting up GIR_EXTRA_LIBS_PATH in the recipe should help.
(typically like this: GIR_EXTRA_LIBS_PATH="${B}/something/.libs" )
Makefile:3528: recipe for target 'gir/fontconfig-2.0.typelib' failed
make[2]: *** [gir/fontconfig-2.0.typelib] Error 1
make[2]: *** Waiting for unfinished jobs....
./.libs/g-ir-compiler: Address overflow loading ELF binary
If the above error message is about missing .so libraries, then setting up GIR_EXTRA_LIBS_PATH in the recipe should help.
(typically like this: GIR_EXTRA_LIBS_PATH="${B}/something/.libs" )
Makefile:3528: recipe for target 'gir/freetype2-2.0.typelib' failed
make[2]: *** [gir/freetype2-2.0.typelib] Error 1
./.libs/g-ir-compiler: Address overflow loading ELF binary
If the above error message is about missing .so libraries, then setting up GIR_EXTRA_LIBS_PATH in the recipe should help.
(typically like this: GIR_EXTRA_LIBS_PATH="${B}/something/.libs" )
Makefile:3528: recipe for target 'gir/DBus-1.0.typelib' failed
make[2]: *** [gir/DBus-1.0.typelib] Error 1

You can check Yocto bug: https://bugzilla.yoctoproject.org/show_bug.cgi?id=9285

I attached the full compile log.

[Peter Maydell (pmaydell)]

Yes, in general you can't reliably run the linux-user QEMU for a 64-bit target on a 32-bit host. You'll need to run it on a 64-bit host instead.

[Peter Maydell (pmaydell)]

Whoops, I noted that 64-on-32 linux-user mode isn't expected to work back in 2016 but forgot to close the bug...