[Qemu-devel] [Bug 1363641] Re: Build of v2.1.0 fails on armv7l due to undeclared __NR_select

[Ben Gelb]

Hi Eduardo - your above commit doesn't update the version in the error message 
(a few lines below, still says >= 2.1.0). 
Sorry if this isn't the right place to comment on your patch, but it would be 
nice to fix (just spent a while trying to figure out why having 2.1.0 installed 
wasn't satisfying the configure check).

Also, I think the way the if statement is constructed it will not
properly apply the 2.1.1 version check for i386 (only for x86_64).

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https://bugs.launchpad.net/bugs/1363641

Title:
  Build of v2.1.0 fails on armv7l due to undeclared __NR_select

Status in QEMU:
  New

Bug description:
  After `make clean` and `git clean -x -f -d` `git checkout v2.1.0 &&
  configure --prefix=/home/user/prefix-qemu-2.1.0 && make` fails due to
  missing declarations

      CC    qemu-seccomp.o
      qemu-seccomp.c:28:1: error: '__NR_select' undeclared here (not in a 
function)
      qemu-seccomp.c:36:1: error: '__NR_mmap' undeclared here (not in a 
function)
      qemu-seccomp.c:57:1: error: '__NR_getrlimit' undeclared here (not in a 
function)
      qemu-seccomp.c:96:1: error: '__NR_time' undeclared here (not in a 
function)
        GEN   qmp-marshal.c
      qemu-seccomp.c:186:1: error: '__NR_alarm' undeclared here (not in a 
function)
      make: *** [qemu-seccomp.o] Error 1

  Same errors for master 8b3030114a449e66c68450acaac4b66f26d91416.
  `configure`should not succeed for a failing build if the error occurs
  due to missing dependencies, if it's a bug it needs to be fixed.
  `config.log` for v2.1.0 and 8b303011... attached. The content is
  mostly compiler output which I think is unusual for `config.log`, but
  see for yourself.

  I'm building on a debian 7.6 chroot on Synology DSM 5.0. `uname -a`
  says `Linux diskstatation 3.2.40 #4493 SMP Thu Aug 21 21:43:02 CST
  2014 armv7l GNU/Linux`.

  After installing some of the missing dependencies, i.e. `apt-get
  install liblzo2-dev libbsd-dev syslinux-common libhwloc-dev librdmacm-
  dev libsnappy-dev libibverbs-dev valgrind linux-
  headers-3.2.0-4-common` I'm getting

       CC    migration-rdma.o
      migration-rdma.c: In function 'ram_chunk_start':
      migration-rdma.c:523:12: error: cast to pointer from integer of different 
size [-Werror=int-to-pointer-cast]
      migration-rdma.c: In function '__qemu_rdma_add_block':
      migration-rdma.c:556:49: error: cast to pointer from integer of different 
size [-Werror=int-to-pointer-cast]
      migration-rdma.c:557:49: error: cast to pointer from integer of different 
size [-Werror=int-to-pointer-cast]
      migration-rdma.c: In function '__qemu_rdma_delete_block':
      migration-rdma.c:664:45: error: cast to pointer from integer of different 
size [-Werror=int-to-pointer-cast]
      migration-rdma.c:699:49: error: cast to pointer from integer of different 
size [-Werror=int-to-pointer-cast]
      migration-rdma.c: In function 'qemu_rdma_search_ram_block':
      migration-rdma.c:1113:49: error: cast to pointer from integer of 
different size [-Werror=int-to-pointer-cast]
      migration-rdma.c: In function 'qemu_rdma_register_and_get_keys':
      migration-rdma.c:1176:50: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c:1177:29: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c:1177:51: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c:1178:29: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c: In function 'qemu_rdma_post_send_control':
      migration-rdma.c:1562:36: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c: In function 'qemu_rdma_post_recv_control':
      migration-rdma.c:1616:37: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c: In function 'qemu_rdma_write_one':
      migration-rdma.c:1864:16: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c:1868:53: error: cast to pointer from integer of 
different size [-Werror=int-to-pointer-cast]
      migration-rdma.c:1922:52: error: cast to pointer from integer of 
different size [-Werror=int-to-pointer-cast]
      migration-rdma.c:1923:50: error: cast to pointer from integer of 
different size [-Werror=int-to-pointer-cast]
      migration-rdma.c:1977:49: error: cast to pointer from integer of 
different size [-Werror=int-to-pointer-cast]
      migration-rdma.c:1998:49: error: cast to pointer from integer of 
different size [-Werror=int-to-pointer-cast]
      migration-rdma.c:2010:58: error: cast to pointer from integer of 
different size [-Werror=int-to-pointer-cast]
      migration-rdma.c: In function 'qemu_rdma_registration_handle':
      migration-rdma.c:3027:21: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      migration-rdma.c:3092:41: error: cast from pointer to integer of 
different size [-Werror=pointer-to-int-cast]
      cc1: all warnings being treated as errors
      make: *** [migration-rdma.o] Error 1

  i.e. earlier errors than before.

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