[PATCH for-6.0? 0/6] extern "C" overhaul for C++ files

[Peter Maydell]

Hi; this patchseries is:
 (1) a respin of Paolo's patches, with the review issue Dan
     noticed fixed (ie handle arm-a64.cc too)
 (2) a copy of my "osdep.h: Move system includes to top" patch
 (3) some new patches which try to more comprehensively address
     the extern "C" issue

I've marked this "for-6.0?", but more specifically:
 * I think patches 1 and 2 should go in if we do an rc4
   (and maybe we should do an rc4 given various things that
   have appeared that aren't individually rc4-worthy)
 * patches 3-6 are definitely 6.1 material

We have 2 C++ files in the tree which need to include QEMU
headers: disas/arm-a64.cc and disas/nanomips.cpp. These
include only osdep.h and dis-asm.h, so it is sufficient to
extern-C-ify those two files only.

I'm not wildly enthusiastic about this because it's pretty
invasive (and needs extending if we ever find we need to
include further headers from C++), but it seems to be what
C++ forces upon us...

Patches 1, 2 and 3 have been reviewed (I kept Dan's r-by on
patch 1 since the change to it is just fixing the thing he
noticed). Further review, and opinions on the 6.0-ness, whether
we should do an rc4, etc, appreciated.

thanks
-- PMM

Paolo Bonzini (2):
  osdep: include glib-compat.h before other QEMU headers
  osdep: protect qemu/osdep.h with extern "C"

Peter Maydell (4):
  include/qemu/osdep.h: Move system includes to top
  osdep: Make os-win32.h and os-posix.h handle 'extern "C"' themselves
  include/qemu/bswap.h: Handle being included outside extern "C" block
  include/disas/dis-asm.h: Handle being included outside 'extern "C"'

 include/disas/dis-asm.h   | 12 ++++++++++--
 include/qemu/bswap.h      | 26 ++++++++++++++++++++++----
 include/qemu/compiler.h   |  6 ++++++
 include/qemu/osdep.h      | 34 +++++++++++++++++++++++++++-------
 include/sysemu/os-posix.h |  8 ++++++++
 include/sysemu/os-win32.h |  8 ++++++++
 disas/arm-a64.cc          |  2 --
 disas/nanomips.cpp        |  2 --
 8 files changed, 81 insertions(+), 17 deletions(-)

-- 
2.20.1