Add has() and path_of() funcs and use them across configure; has()
will test whether a command or builtin is available; path_of() will
search the PATH for executables and return the full pathname if found.

Signed-off-by: Loïc Minier <lool@dooz.org
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Check whether sdl-config is available before calling it, otherwise
./configure triggers a warning:
    ./configure: 957: sdl-config: not found

If neither the .pc file not sdl-config are present, disable SDL support.
Signed-off-by: NLoïc Minier <lool@dooz.org>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

_FORTIFY_SOURCE is a Glibc feature which adds memory and string function
protection.
Signed-off-by: NKirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The default value is ${prefix}/etc/qemu.  --sysconfdir can be used to override
the default to an absolute path.  The expectation is that when installed to
/usr, --sysconfdir=/etc/qemu will be used.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Together with the first patch this enables using the prefixed
pkg-config, thus picking up the correct flags for SDL.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

After the next commit, pkg-config could be used for the shared library
configuration case and sdl-config for static libraries.  So I prepare
the test here by doing two changes:

at the same time I remove useless backslashes from the invocation of
grep;

1) fixing a typo ($sd_cflags).  The typo has been there since commit
1ac88f28 (remove sdl_static. Just do the right thing if static is yes,
2009-07-27).

2) fixing an erroneous "test `... | grep > /dev/null`" idiom that would
never succeed since grep's output would be empty;

3) checking the status code after executing sdl-config --static --libs;
this is needed for the next patch only.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Since pkgconfig can give different output for different targets,
it should be tried with the cross-compilation prefix first.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Will be required for upcoming KVM cpuid leaf. Host kernels >= 2.6.32 as
well as future kvm-kmod releases (more recent than kvm-kmod-2.6.32.3)
do/will provide them.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Since kvm-kmod-2.6.32.2 we have an alternative source for recent KVM
kernel headers. Use it when available and not overruled by --kerneldir.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This adds a few more vpath suffixes and points the remaining two paths
explicitly to $(SRC_PATH) in order to eliminate the VPATH assignment
from config-host.mak.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Juan has contributed a cool Makefile infrastructure that enables us to drop
static libraries completely:

Move shared obj-y definitions to Makefile.objs, prefixed {common-,hw-,user-},
and link those object files directly into the executables.

Replace HWLIB by HWDIR, specifying only the directory.

Drop --whole-archive and ARLIBS in Makefiles and configure.

Drop GENERATED_HEADERS dependency in rules.mak, since this rebuilds all
common objects after generating a target-specific header; add dependency
rules to Makefile and Makefile.target instead.

v2:
- Don't try to include /config.mak for user emulators
- Changes to user object paths ("Quickfix for libuser.a drop") were obsoleted
  by "user_only: compile everything with -fpie" (Kirill A. Shutemov)

v3:
- Fix dependency modelling for tools
- Remove comment on GENERATED_HEADERS obsoleted by this patch
Signed-off-by: NAndreas Färber <afaerber@opensolaris.org>
Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Palle Lyckegaard <palle@lyckegaard.dk>
Cc: Ben Taylor <bentaylor.solx86@gmail.com>
Cc: Juan Quintela <quintela@trasno.org>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

basename() needs #include <libgen.h>.

No prototype for daemon() is available on Solaris, but link
succeeds.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

We really need compile _all_ sources for user target with -fpie when
use --enable-user-pie.

It's regression introduced by commit add16157.
Signed-off-by: NKirill A. Shutemov <kirill@shutemov.name>
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: NJuan Quintela <quintela@redhat.com>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NRichard Henderson <rth@twiddle.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

qemu_malloc() does not allow size=0 to be passed in and aborts on this behavior.

Unfortunately, there is good reason to believe that within qemu, there are a
number of, so far, undetected places that assume size=0 can be safely passed.
Since we do not want to abort unnecessarily in production builds, return
qemu_malloc(1) whenever the version file indicates that this is a production
build.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

S390x was one of the first platforms that received support for KVM back in the
day. Unfortunately until now there hasn't been a qemu implementation that would
enable users to actually run guests.

So let's include support for KVM S390x in qemu!
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

This patch makes configure aware of S390 hosts and guests. When not explicitly
defined using --target-list= no S390 targets will be built though.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

To avoid the build failing with:

gcc -Wall -Wstrict-prototypes -Werror -fomit-frame-pointer -fno-
builtin -I/export/home/andreas/QEMU/qemu   -Wall -Wstrict-prototypes -
Werror -fomit-frame-pointer -fno-builtin -I/export/home/andreas/QEMU/
qemu   -c -o multiboot.o multiboot.S
/var/tmp//ccd3aWyk.s: Assembler messages:
/var/tmp//ccd3aWyk.s:15: Error: value of 512 too large for field of 1
bytes at 0000000000000002
gmake[1]: *** [multiboot.o] Error 1

disable recursion into pc-bios/optionrom, as done for Darwin already.
Signed-off-by: NAndreas Faerber <andreas.faerber@web.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

We're leaking file descriptors to child processes. Set FD_CLOEXEC on file
descriptors that don't need to be passed to children to stop this misbehaviour.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

linux-user build on fedora 11 breaks because fallocate
is broken on that system if -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
are specified, which is what QEMU uses.

We do have a configure check to catch this and disable fallocate,
however, it turns out that default QEMU_CFLAGS/LDFLAGS were assigned in
script *after* all compiler checks: so during checks we were not running
compiler with same flags that we used for build later.

Fix this by moving QEMU_CFLAGS to before compiler checks, and using
comple_prog when checking for fallocate.  This also fixes the fact that
we do some compiler checks while assigning the flags, right below a
comment that says "no cc tests beyond this point".
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Based on a patch from Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org>

A few words about design choices:
* Two registers, at and t0, are reserved for TCG internal use. They are
  useful for bswap and 64-bit ops.
* Most ops supports a constant argument with value 0, which is actually
  mapped to the zero register.
* While the at register is available for constant loading, ops only
  support a limited range of constants. TCG does a better job doing the
  register allocation and constant loading by itself. There are plenty of
  registers available anyway.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Add makefile dependencies for target specific device configs.
These will copy the default config if none exists, obsoleting the old
configure time code.  If a config already exists but is older than the
default then print a warning.

Also remove config-devices.h.  Code does not and should not care which
devices are being built.
Signed-off-by: NPaul Brook <paul@codesourcery.com>

* Replace vill -> will.

* Comment was formatted to make it more readable
  and to conform to the coding standard, too.

* Description of foo="" was completed.
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Since c32d766a, qemu-io should be
portable. It is currently built only on linux and mingw32.

This patch enables qemu-io on all platforms. Tested on FreeBSD.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Link with -lpulse in addition to -lpulse-simple, needed when --no-add-needed
is passed to the linker (gold default).
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

We have a function for this which does not issue annoying warnings.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

We have code for a quite a few block formats.  While I trust that all
of these formats are useful at least for some people in some
circumstances, some of them are of a kind that friends don't let
friends use in production.

This patch provides an optional block format whitelist, default off.
If a whitelist is configured with --block-drv-whitelist, QEMU proper
can use only whitelisted formats.  Other programs, like qemu-img, are
not affected.

Drivers for formats off the whitelist still participate in format
probing, to ensure all programs probe exactly the same.  Without that,
QEMU proper would be prone to treat images with a format off the
whitelist as raw when the image's format is probed.
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

You would only see this error on a fresh clone when srcdir == objdir.  configure
will fail because roms/pcbios doesn't exist.

git submodule integration doesn't cleanup very well when switching between
branches so you'll get an roms/pcbios directory from normal operations if you
switch between old branches.

Thanks to a mistake in configure, if you build outside of srcdir, you'll also
get a valid roms/pcbios.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

So I can add a tap-linux.c and use CONFIG_LINUX to pull it in
in Makefile
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

[v2: handle building in a separate dir]
Signed-off-by: NMark McLoughlin <markmc@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

updated fallocate check to new configure, added dup3 check as suggested
by Jan-Simon Möller.

Riku: updated to apply to current git.
Signed-off-by: NUlrich Hecht <uli@suse.de>
Signed-off-by: NRiku Voipio <riku.voipio@iki.fi>

Signed-off-by: Nmalc <av1474@comtv.ru>