brew install qemu

brew-doctor.sh

~/ ruby-1.9.2@fashmob_poc $ brew doctor
You can install Homebrew anywhere you want, but some brews may only work
correctly if you install to /usr/local.

install-qemu.sh

~/ ruby-1.9.2@fashmob_poc $ brew -v install qemu
Homebrew 0.7.1
==> Build Environment
CC: /usr/bin/cc => /usr/bin/gcc-4.2
CXX: /usr/bin/c++ => /usr/bin/c++-4.2
LD: /usr/bin/cc => /usr/bin/gcc-4.2
CFLAGS: -O3 -w -pipe
CXXFLAGS: -O3 -w -pipe
CPPFLAGS: -isystem /Users/sebastian/Developer/include
LDFLAGS: -L/Users/sebastian/Developer/lib
MAKEFLAGS: -j4
==> Downloading http://download.savannah.gnu.org/releases/qemu/qemu-0.13.0.tar.gz
File already downloaded and cached to /Users/sebastian/Library/Caches/Homebrew
/usr/bin/tar xf /Users/sebastian/Library/Caches/Homebrew/qemu-0.13.0.tar.gz
==> ./configure --prefix=/Users/sebastian/Developer/Cellar/qemu/0.13.0 --disable-darwin-user --enable-cocoa --disable-bsd-user
./configure --prefix=/Users/sebastian/Developer/Cellar/qemu/0.13.0 --disable-darwin-user --enable-cocoa --disable-bsd-user
Install prefix    /Users/sebastian/Developer/Cellar/qemu/0.13.0
BIOS directory    /Users/sebastian/Developer/Cellar/qemu/0.13.0/share/qemu
binary directory  /Users/sebastian/Developer/Cellar/qemu/0.13.0/bin
config directory  /Users/sebastian/Developer/Cellar/qemu/0.13.0/etc
Manual directory  /Users/sebastian/Developer/Cellar/qemu/0.13.0/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path       /private/tmp/homebrew-qemu-0.13.0-mDAw/qemu-0.13.0
C compiler        gcc
Host C compiler   gcc
CFLAGS            -O2 -g -O3 -w -pipe
QEMU_CFLAGS       -m64 -arch x86_64 -fstack-protector-all -Wold-style-definition -I. -I$(SRC_PATH) -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wendif-labels -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing 
LDFLAGS           -m64 -framework CoreFoundation -framework IOKit -arch x86_64 -g -L/Users/sebastian/Developer/lib
make              make
install           install
host CPU          x86_64
host big endian   no
target list       i386-softmmu x86_64-softmmu arm-softmmu cris-softmmu m68k-softmmu microblaze-softmmu mips-softmmu mipsel-softmmu mips64-softmmu mips64el-softmmu ppc-softmmu ppcemb-softmmu ppc64-softmmu sh4-softmmu sh4eb-softmmu sparc-softmmu sparc64-softmmu 
tcg debug enabled no
Mon debug enabled no
gprof enabled     no
sparse enabled    no
strip binaries    yes
profiler          no
static build      no
-Werror enabled   no
Cocoa support     yes
SDL support       no
curses support    yes
curl support      yes
check support     no
mingw32 support   no
Audio drivers     coreaudio 
Extra audio cards ac97 es1370 sb16
Block whitelist   
Mixer emulation   no
VNC TLS support   yes
VNC SASL support  yes
VNC JPEG support  no
VNC PNG support   no
VNC thread        no
xen support       no
brlapi support    no
bluez  support    no
Documentation     yes
NPTL support      no
GUEST_BASE        yes
PIE user targets  no
vde support       no
IO thread         no
Linux AIO support no
ATTR/XATTR support no
Install blobs     yes
KVM support       no
fdt support       no
preadv support    no
fdatasync         yes
uuid support      yes
vhost-net support no
==> make install
make install 
  GEN   i386-softmmu/config-devices.mak
  GEN   x86_64-softmmu/config-devices.mak
  GEN   arm-softmmu/config-devices.mak
  GEN   cris-softmmu/config-devices.mak
  GEN   microblaze-softmmu/config-devices.mak
  GEN   m68k-softmmu/config-devices.mak
  GEN   mips-softmmu/config-devices.mak
  GEN   mipsel-softmmu/config-devices.mak
  GEN   mips64-softmmu/config-devices.mak
  GEN   mips64el-softmmu/config-devices.mak
  GEN   ppc-softmmu/config-devices.mak
  GEN   ppcemb-softmmu/config-devices.mak
  GEN   ppc64-softmmu/config-devices.mak
  GEN   sh4-softmmu/config-devices.mak
  GEN   sh4eb-softmmu/config-devices.mak
  GEN   sparc-softmmu/config-devices.mak
  GEN   sparc64-softmmu/config-devices.mak
  GEN   config-all-devices.mak
  GEN   qemu-options.texi
  GEN   qemu-monitor.texi
  GEN   qemu-img-cmds.texi
  GEN   qemu-tech.html
qemu-tech.texi:7: Warnung: nicht erkannter Kodierungsname „UTF-8“.
  GEN   qemu-nbd.8
  GEN   QMP/qmp-commands.txt
  GEN   config-host.h
  GEN   qemu-img-cmds.h
  CC    cmd.o
  GEN   qemu-options.def
install -d -m0755 -p "/Users/sebastian/Developer/Cellar/qemu/0.13.0/etc/qemu"
install: the -d and -C options may not be specified together
install -m0644 -p /private/tmp/homebrew-qemu-0.13.0-mDAw/qemu-0.13.0/sysconfigs/target/target-x86_64.conf "/Users/sebastian/Developer/Cellar/qemu/0.13.0/etc/qemu"
  GEN   qemu-img.1
  GEN   qemu-doc.html
  GEN   qemu.1
qemu-doc.texi:7: Warnung: nicht erkannter Kodierungsname „UTF-8“.
  CC    qemu-nbd.o
  CC    qemu-tool.o
  CC    qemu-error.o
  CC    cutils.o
  CC    cache-utils.o
  CC    qemu-malloc.o
  CC    qemu-option.o
  CC    module.o
  CC    nbd.o
  CC    block.o
  CC    aio.o
  CC    aes.o
  CC    osdep.o
  CC    qemu-config.o
  CC    posix-aio-compat.o
  CC    block/raw.o
  CC    block/cow.o
  CC    block/qcow.o
  CC    block/vdi.o
  CC    block/vmdk.o
  CC    block/cloop.o
  CC    block/dmg.o
  CC    block/bochs.o
  CC    block/vpc.o
  CC    block/vvfat.o
  CC    block/qcow2.o
  CC    block/qcow2-refcount.o
  CC    block/qcow2-cluster.o
  CC    block/qcow2-snapshot.o
  CC    block/parallels.o
  CC    block/nbd.o
  CC    block/blkdebug.o
  CC    block/sheepdog.o
  CC    block/raw-posix.o
  CC    block/curl.o
  CC    qint.o
  CC    qstring.o
  CC    qdict.o
  CC    qlist.o
  CC    qfloat.o
  CC    qbool.o
  CC    qjson.o
  CC    json-lexer.o
  CC    json-streamer.o
  CC    json-parser.o
  CC    qerror.o
  CC    qemu-img.o
  CC    qemu-io.o
  GEN   libhw32/qemu-options.def
  CC    blockdev.o
  CC    net.o
  CC    libhw32/loader.o
  CC    libhw32/virtio.o
  CC    libhw32/virtio-console.o
  CC    net/queue.o
  CC    libhw32/fw_cfg.o
  CC    libhw32/pci.o
  CC    net/checksum.o
  CC    libhw32/pci_host.o
  CC    net/util.o
  CC    net/socket.o
  CC    net/dump.o
  CC    libhw32/pcie_host.o
  CC    net/tap.o
  CC    net/tap-bsd.o
  CC    net/slirp.o
  CC    readline.o
  CC    console.o
  CC    cursor.o
  CC    async.o
  CC    os-posix.o
  CC    tcg-runtime.o
  CC    host-utils.o
  CC    irq.o
  CC    ioport.o
  CC    input.o
  CC    libhw32/watchdog.o
  CC    ptimer.o
  CC    libhw32/isa_mmio.o
  CC    libhw32/ecc.o
  CC    max7310.o
  CC    wm8750.o
  CC    libhw32/nand.o
  CC    twl92230.o
  CC    tsc2005.o
  CC    lm832x.o
  CC    tmp105.o
  CC    stellaris_input.o
  CC    libhw32/pflash_cfi01.o
  CC    ssd0303.o
  CC    ssd0323.o
  CC    libhw32/pflash_cfi02.o
  CC    libhw32/m48t59.o
  CC    ads7846.o
  CC    libhw32/escc.o
  CC    libhw32/empty_slot.o
  CC    libhw32/serial.o
  CC    max111x.o
  CC    libhw32/parallel.o
  CC    ds1338.o
  CC    i2c.o
  CC    libhw32/i8254.o
  CC    libhw32/pcspk.o
  CC    libhw32/pckbd.o
  CC    libhw32/usb-uhci.o
  CC    libhw32/fdc.o
  CC    libhw32/acpi.o
  CC    libhw32/acpi_piix4.o
  CC    libhw32/pm_smbus.o
  CC    smbus.o
  CC    libhw32/apm.o
  CC    libhw32/dma.o
  CC    libhw32/openpic.o
  CC    smbus_eeprom.o
  CC    eeprom93xx.o
  CC    libhw32/prep_pci.o
  CC    libhw32/macio.o
  CC    scsi-disk.o
  CC    libhw32/cuda.o
  CC    libhw32/adb.o
  CC    libhw32/mac_nvram.o
  CC    libhw32/mac_dbdma.o
  CC    libhw32/heathrow_pic.o
  CC    cdrom.o
  CC    libhw32/grackle_pci.o
  CC    scsi-generic.o
  CC    scsi-bus.o
  CC    libhw32/unin_pci.o
  CC    libhw32/dec_pci.o
  CC    libhw32/ppce500_pci.o
  CC    libhw32/piix4.o
  CC    usb.o
  CC    libhw32/wdt_i6300esb.o
  CC    libhw32/msix.o
  CC    libhw32/ne2000.o
  CC    usb-hub.o
  CC    usb-stub.o
  CC    usb-hid.o
  CC    usb-msd.o
  CC    libhw32/eepro100.o
  CC    usb-wacom.o
  CC    usb-serial.o
  CC    usb-net.o
  CC    usb-bus.o
  CC    libhw32/pcnet.o
  CC    ssi.o
  CC    libhw32/smc91c111.o
  CC    libhw32/lan9118.o
  CC    ssi-sd.o
  CC    sd.o
  CC    libhw32/ne2000-isa.o
  CC    libhw32/ide/core.o
  CC    bt.o
  CC    libhw32/ide/qdev.o
  CC    bt-host.o
  CC    libhw32/ide/pci.o
  CC    libhw32/ide/isa.o
  CC    libhw32/ide/piix.o
  CC    libhw32/ide/cmd646.o
  CC    libhw32/ide/macio.o
  CC    bt-vhci.o
  CC    libhw32/ide/via.o
  CC    libhw32/lsi53c895a.o
  CC    bt-l2cap.o
  CC    bt-sdp.o
  CC    bt-hci.o
/private/tmp/homebrew-qemu-0.13.0-mDAw/qemu-0.13.0/hw/bt-sdp.c: In function ‘bt_l2cap_sdp_sdu_in’:
/private/tmp/homebrew-qemu-0.13.0-mDAw/qemu-0.13.0/hw/bt-sdp.c:246: note: ‘seqlen’ was declared here
  CC    bt-hid.o
  CC    usb-bt.o
  CC    bt-hci-csr.o
  CC    libhw32/esp.o
  CC    buffered_file.o
  CC    migration.o
  CC    migration-tcp.o
  CC    qemu-sockets.o
  CC    qemu-char.o
  CC    libhw32/dma-helpers.o
  CC    savevm.o
  CC    libhw32/sysbus.o
  CC    msmouse.o
  CC    libhw32/isa-bus.o
  CC    ps2.o
  CC    libhw32/qdev-addr.o
  CC    libhw32/vga-pci.o
  CC    libhw32/vga-isa.o
  CC    qdev.o
  CC    qdev-properties.o
  CC    libhw32/vga-isa-mm.o
  CC    libhw32/vmware_vga.o
  CC    block-migration.o
  CC    migration-exec.o
  CC    migration-unix.o
  CC    migration-fd.o
  CC    libhw32/rc4030.o
  CC    audio/audio.o
  CC    audio/noaudio.o
  CC    audio/wavaudio.o
  CC    libhw32/dp8393x.o
  CC    libhw32/ds1225y.o
  CC    audio/mixeng.o
  CC    audio/coreaudio.o
  CC    libhw32/mipsnet.o
  CC    audio/wavcapture.o
  CC    libhw32/sb16.o
  CC    ui/keymaps.o
  CC    ui/curses.o
  CC    ui/vnc.o
  CC    ui/d3des.o
  CC    ui/vnc-enc-zlib.o
  CC    libhw32/es1370.o
  CC    libhw32/ac97.o
In file included from ui/vnc.h:88,
                 from ui/vnc-enc-zlib.c:27:
ui/vnc-tls.h:60: error: expected specifier-qualifier-list before ‘gnutls_session_t’
make: *** [ui/vnc-enc-zlib.o] Error 1
make: *** Waiting for unfinished jobs....
  CC    libhw32/vl.o
Exit status: 2

http://github.com/mxcl/homebrew/blob/master/Library/Formula/qemu.rb#L16

==> Environment
HOMEBREW_VERSION: 0.7.1
HEAD: 7a74a10224f0eccebea57de836e51884ee0932c6
HOMEBREW_PREFIX: /Users/sebastian/Developer
HOMEBREW_CELLAR: /Users/sebastian/Developer/Cellar
HOMEBREW_REPOSITORY: /Users/sebastian/Developer
HOMEBREW_LIBRARY_PATH: /Users/sebastian/Developer/Library/Homebrew
Hardware: quad-core 64-bit arrandale
OS X: 10.6.5
Kernel Architecture: i386
Ruby: 1.8.7-174
/usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
Xcode: 3.2.3
GCC-4.0: build 5494 
GCC-4.2: build 5664 
LLVM: build 2326 
MacPorts or Fink? false
X11 installed? true

==> Build Flags
CC: /usr/bin/cc => /usr/bin/gcc-4.2
CXX: /usr/bin/c++ => /usr/bin/c++-4.2
LD: /usr/bin/cc => /usr/bin/gcc-4.2
CFLAGS: -O3 -w -pipe
CXXFLAGS: -O3 -w -pipe
CPPFLAGS: -isystem /Users/sebastian/Developer/include
LDFLAGS: -L/Users/sebastian/Developer/lib
MAKEFLAGS: -j4
Error: Failure while executing: make install 
Please follow the instructions to report this bug at: 
https://github.com/mxcl/homebrew/wiki/new-issue

Also try:
  `brew doctor` to check your setup for common problems.
  `brew missing` to check installed packages for missing deps.