qemu upstream arm compile error failed

qemu upstream arm compile error failed

[Mao Mingy]

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I tried to use the qemu upstream on xen Dom0 (arm arch) to get the PVFB, 
PVKBD and PVMOUSE work.

However, I got compiler error at the begin. Here are the detail steps:
1. download the source code from " git://git.qemu-project.org/qemu.git ".
2. " cd qemu "
3. configure using command "./configure 
--cross-prefix=arm-linux-gnueabihf- --target-list=arm-softmmu --enable-fdt"
4. " make "

However,  I got the following compile error

   GEN tests/test-qmp-commands.h
   GEN   tests/test-qapi-event.h
   CC    tests/qemu-iotests/socket_scm_helper.o
   LINK  tests/qemu-iotests/socket_scm_helper
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/bin/ld: 
cannot find -lgthread-2.0
/usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/bin/ld: 
cannot find -lglib-2.0
collect2: error: ld returned 1 exit status
make: *** [tests/qemu-iotests/socket_scm_helper] Error 1

Looks like the build process need some libs missed in my 
gcc-cross/arm-linux-gnueabihf/4.8

What is the reason and solution?

Thanks & Regards,
Mao

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Re: qemu upstream arm compile error failed

[Ian Campbell]

On Wed, 2015-01-07 at 18:02 +0800, Mao Mingy wrote:
> I tried to use the qemu upstream on xen Dom0 (arm arch) to get the
> PVFB, PVKBD and PVMOUSE work.

With Xen 4.5 qemu is automatically built for ARM, no need to do it
separately AFAIK.

Also note that you need to build qemu for i386, even on ARM (since the
PV backends are currently entwined with x86 for historical reasons. This
doesn't matter since qemu does no CPU emulation under Xen anyway.

Lastly:
> /usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/bin/ld: cannot find -lgthread-2.0
> /usr/lib/gcc-cross/arm-linux-gnueabihf/4.8/../../../../arm-linux-gnueabihf/bin/ld: cannot find -lglib-2.0

I think it is pretty obvious from these error messages that you are
missing some build dependencies, this isn't a Xen specific issue AFAICT.
The solution is to make ARM versions of those libraries available in
your cross environment.

Ian.