[Qemu-devel] [Bug 1531632] Re: Can't compile qemu because of errors in the Xen code

[Leo]

Hello pranith,

  Well, as I'm using the "ABS" system from Arch Linux, I had to study
how it compile things, but I found it:

./configure --prefix=/usr --sysconfdir=/etc --audio-drv-list='pa alsa sdl' \
              --python=/usr/bin/python2 --smbd=/usr/bin/smbd \
              --enable-docs --libexecdir=/usr/lib/qemu \
              --disable-gtk --enable-linux-aio --enable-seccomp \
              --enable-spice --localstatedir=/var \
              --enable-tpm \
              --enable-modules --enable-{rbd,glusterfs,libiscsi,curl}

Then I downloaded a copy of qemu with git  and I run the configure help 
(configure --help), then I saw that I can "enable/disable" xen, so I added the 
---disable-xen to the above line in the PKGBUILD file from ABS and it compiled.
So, on **my** box I just had to disable Xen as I don't use it.
Thank you for your help.

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https://bugs.launchpad.net/bugs/1531632

Title:
  Can't compile qemu because of errors in the Xen code

Status in QEMU:
  New

Bug description:
  I'm using Arch Linux, with all needed libs packages installed via ABS 
(compiled from source).
  I tried to clone the master repository, the v2.5.0 and the stable-2.4.0, all 
I had the same problems:

  First I have to disable -Werror, because it claims about some
  uninitialized variables.

  Trying to compile the code, it stops when compiling the xen code
  (hw/block/xendisk.o), complaining that ioservid_t is declared twice,
  first as 16bit and then as 32bit.

  Output of make:

    CC    hw/block/xen_disk.o
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h:198:18: error: conflicting types 
for ‘ioservid_t’
   typedef uint16_t ioservid_t;
                    ^
  In file included from /usr/include/xenctrl.h:37:0,
                   from /home/leo/qemu/include/hw/xen/xen_common.h:9,
                   from /home/leo/qemu/include/hw/xen/xen_backend.h:4,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /usr/include/xen/xen.h:353:18: note: previous declaration of ‘ioservid_t’ was 
here
   typedef uint32_t ioservid_t;
                    ^
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h: In function 
‘xen_get_ioreq_server_info’:
  /home/leo/qemu/include/hw/xen/xen_common.h:256:36: error: 
‘HVM_PARAM_IOREQ_PFN’ undeclared (first use in this function)
       rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
                                      ^
  /home/leo/qemu/include/hw/xen/xen_common.h:256:36: note: each undeclared 
identifier is reported only once for each function it appears in
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h:264:36: error: 
‘HVM_PARAM_BUFIOREQ_PFN’ undeclared (first use in this function)
       rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
                                      ^
  /home/leo/qemu/rules.mak:57: recipe for target 'hw/block/xen_disk.o' failed
  make: *** [hw/block/xen_disk.o] Error 1
  address@hidden build]$ make
    CC    hw/block/xen_disk.o
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h:198:18: error: conflicting types 
for ‘ioservid_t’
   typedef uint16_t ioservid_t;
                    ^
  In file included from /usr/include/xenctrl.h:37:0,
                   from /home/leo/qemu/include/hw/xen/xen_common.h:9,
                   from /home/leo/qemu/include/hw/xen/xen_backend.h:4,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /usr/include/xen/xen.h:353:18: note: previous declaration of ‘ioservid_t’ was 
here
   typedef uint32_t ioservid_t;
                    ^
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h: In function 
‘xen_get_ioreq_server_info’:
  /home/leo/qemu/include/hw/xen/xen_common.h:256:36: error: 
‘HVM_PARAM_IOREQ_PFN’ undeclared (first use in this function)
       rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
                                      ^
  /home/leo/qemu/include/hw/xen/xen_common.h:256:36: note: each undeclared 
identifier is reported only once for each function it appears in
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h:264:36: error: 
‘HVM_PARAM_BUFIOREQ_PFN’ undeclared (first use in this function)
       rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
                                      ^
  /home/leo/qemu/rules.mak:57: recipe for target 'hw/block/xen_disk.o' failed
  make: *** [hw/block/xen_disk.o] Error 1
  address@hidden build]$ make
    CC    hw/block/xen_disk.o
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h:198:18: error: conflicting types 
for ‘ioservid_t’
   typedef uint16_t ioservid_t;
                    ^
  In file included from /usr/include/xenctrl.h:37:0,
                   from /home/leo/qemu/include/hw/xen/xen_common.h:9,
                   from /home/leo/qemu/include/hw/xen/xen_backend.h:4,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /usr/include/xen/xen.h:353:18: note: previous declaration of ‘ioservid_t’ was 
here
   typedef uint32_t ioservid_t;
                    ^
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h: In function 
‘xen_get_ioreq_server_info’:
  /home/leo/qemu/include/hw/xen/xen_common.h:256:36: error: 
‘HVM_PARAM_IOREQ_PFN’ undeclared (first use in this function)
       rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
                                      ^
  /home/leo/qemu/include/hw/xen/xen_common.h:256:36: note: each undeclared 
identifier is reported only once for each function it appears in
  In file included from /home/leo/qemu/include/hw/xen/xen_backend.h:4:0,
                   from /home/leo/qemu/hw/block/xen_disk.c:39:
  /home/leo/qemu/include/hw/xen/xen_common.h:264:36: error: 
‘HVM_PARAM_BUFIOREQ_PFN’ undeclared (first use in this function)
       rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
                                      ^
  /home/leo/qemu/rules.mak:57: recipe for target 'hw/block/xen_disk.o' failed
  make: *** [hw/block/xen_disk.o] Error 1

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