configure

#!/bin/sh
# The purpose of this script is to check for all external tools, headers, and
# libraries VBox OSE depends on.

#
# Copyright (C) 2006-2024 Oracle and/or its affiliates.
#
# This file is part of VirtualBox base platform packages, as
# available from https://www.virtualbox.org.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation, in version 3 of the
# License.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, see <https://www.gnu.org/licenses>.
#
# SPDX-License-Identifier: GPL-3.0-only
#

LC_ALL=C
export LC_ALL

# append some extra paths
PATH="$PATH:/opt/gnome/bin"
# Solaris (order of paths important for tr, grep, sed to work)
PATH="/usr/xpg4/bin:$PATH:/usr/local/bin:/usr/sfw/bin:/usr/ccs/bin"
ORGPATH=$PATH

# Wrapper for ancient /usr/bin/which on darwin that always returns 0
which_wrapper()
{
  if [ -z "$have_ancient_which" ]; then
    if which /bin/___cErTaINly_a_nOn_eXisTing_fIle___ 2> /dev/null > /dev/null; then
      have_ancient_which="yes"
    else
      have_ancient_which="no"
    fi
  fi
  if [ "$have_ancient_which" = "yes" ]; then
    retval=`which $* 2>/dev/null`
    echo "$retval"
    test -n "$retval" -a -x "$retval"
    unset retval
  else
    which $* 2> /dev/null
  fi
}

OS=`uname -s | sed -e 's/GNU\/Linux/Linux/g' | tr '[:upper:]' '[:lower:]'`
case "$OS" in
  linux)
    ;;
  darwin)
    ;;
  freebsd)
    ;;
  netbsd)
    ;;
  sunos)
    OS='solaris'
    ;;
  haiku)
    ;;
  *)
    echo "Cannot determine OS!"
    exit 1
    ;;
esac

#
# Defaults
#
OSE=1
ODIR="`pwd`/"
ODIR_OVERRIDE=0
OUT_BASE_PATH=""
OUT_BASE_PATH_OVERRIDE=0
SETUP_WINE=
ONLY_ADDITIONS=0
TARGET_MACHINE=""
TARGET_CPU=""
WITH_XPCOM=1
WITH_PYTHON=1
WITH_JAVA=1
WITH_VMMRAW=1
WITH_QT6=1
WITH_SDL=1
WITH_SDL_TTF=1
WITH_X11=1
WITH_ALSA=1
WITH_PULSE=1
WITH_DBUS=1
WITH_DEVMAPPER=1
WITH_KMODS=1
WITH_OPENGL=1
WITH_HARDENING=1
WITH_UDPTUNNEL=1
WITH_VDE=0
WITH_VNC=0
WITH_EXTPACK=1
WITH_DOCS=1
WITH_LIBVPX=1
WITH_LIBOGG=0
WITH_LIBVORBIS=0
WITH_LIBTPMS=1
WITH_LIBLZMA=1
BUILD_LIBXML2=
BUILD_LIBCURL=
BUILD_LIBSSL=
BUILD_LIBVPX=
BUILD_LIBTPMS=
if [ "$OS" = "darwin" ]; then # Do not use the /opt/local version of this! We end up using the wrong iconv.h then.
    BUILD_LIBLZMA=1
else
    BUILD_LIBLZMA=
fi
PASSIVE_MESA=0
CC="gcc"
CC32=""
CC64=""
CXX="g++"
CXX32=""
CXX64=""
YASM="yasm"
IASL="iasl"
XSLTPROC="xsltproc"
INCCRYPTO=""
LIBCRYPTO="-lssl -lcrypto"
LIBPTHREAD="-lpthread"
LIBCAP="-lcap"
GSOAP=""
GSOAP_IMPORT=""
INCX11="/usr/local/include"
LIBX11="-L/usr/X11R6/lib -L/usr/X11R6/lib64 -L/usr/local/lib -lXext -lX11"
LIBXCURSOR="-lXcursor"
LIBXMU="-lXmu"
LIBXINERAMA="-lXinerama"
LIBXRANDR="-lXrandr"
MAKESELF="makeself"
MESA="-lGL"
INCZ=""
LIBZ="-lz"
INCLZF="/usr/include/liblzf"
LIBLZF="-llzf"
INCVNCSERVER=""
LIBVNCSERVER="-lvncserver"
INCDEVMAPPER=""
LIBDEVMAPPER="-ldevmapper"
CXX_FLAGS=""
if [ "$OS" = "freebsd" ]; then
  INCCURL="-I/usr/local/include"
  LIBCURL="-L/usr/local/lib -lcurl"
  INCPULSE="-I/usr/local/include"
  LIBPULSE="-L/usr/local/lib"
  INCPNG="-I/usr/local/include"
  LIBPNG="-L/usr/local/lib -lpng"
else
  INCCURL=""
  LIBCURL="-lcurl"
  INCPNG=""
  LIBPNG="-lpng"
fi
INCVPX=""
LIBVPX="-lvpx"
PKGCONFIG="`which_wrapper pkg-config`"
PYTHONDIR="/usr /usr/local"
QT6DIR="/usr/lib/qt6 /usr/share/qt6 /usr/lib64/qt6 /usr /usr/local"
QT6DIR_PKGCONFIG=1
QT6MAJ=6
QT6MIN=3
KBUILDDIR="`cd \`dirname $0\`; pwd`/kBuild"
DEVDIR="`cd \`dirname $0\`; pwd`/tools"
if [ -d "/lib/modules/`uname -r`/build" ]; then
  LINUX="/lib/modules/`uname -r`/build"
elif [ "`echo /lib/modules/*`" != "/lib/modules/*" ]; then
  # Get the most recent kernel headers if none match the current kernel.
  for i in /lib/modules/*; do
    if [ -r "$i/build" ]; then
      LINUX="$i/build"
    fi
  done
fi
if [ -z "$LINUX" ]; then
 LINUX="/usr/src/linux"
fi
KCHMVIEWER="kchmviewer"
LOG="configure.log"
CNF="AutoConfig.kmk"
ENV="env.sh"
BUILD_TYPE="release"
# the restricting tool is ar (mri mode).
INVALID_CHARS="[^A-Za-z0-9/\\$:._-]"

if (cd `dirname $0`; pwd)|grep -q "$INVALID_CHARS"; then
  echo "Error: VBox base path contains invalid characters!"
  exit 1
fi

# Posix /bin/sh isn't supporting echo -n. Use printf instead.
ECHO_N="printf"


cleanup()
{
  rm -f $ODIR.tmp_src.cc $ODIR.tmp_src.c $ODIR.tmp_out $ODIR.test_execute.log
  [ "$OS" = "darwin" ] && rm -rf $ODIR.tmp_out.dSYM
  true
}

fail()
{
  if [ -z "$nofatal" -o "x$1" != "x" ]; then
    cleanup
    rm -f $ENV
    echo "Check $LOG for details"
    exit 1
  fi
}

log()
{
  echo "$1"
  echo "$1" >> $LOG
}

log_success()
{
  if [ -n "$1" ]; then $ECHO_N "$1, "; fi
  echo "OK."
  echo "$1" >> $LOG
  echo >> $LOG
  echo >> $LOG
}

log_failure()
{
  echo
  echo "  ** $1!"
  echo "** $1!" >> $LOG
  echo >> $LOG
}

cnf_append()
{
  printf "%-30s := %s\n" "$1" "$2" >> $CNF
}

strip_l()
{
  echo "$1"|$KBUILD_SED 's|-l\([^ ]\+\)|\1|g; s|^-[^l][^ ]*||g; s| -[^l][^ ]*||g; s|^ ||; s| *$||g'
}

strip_L()
{
  if [ "$OS" = "darwin" ]; then
    echo "$1"|$KBUILD_SED 's|-F\([^ ]\+\)|\1|g; s|^-[^F][^ ]*||g; s| -[^F][^ ]*||g; s|^ ||; s| *$||g'
  else
    echo "$1"|$KBUILD_SED 's|-L\([^ ]\+\)|\1|g; s|^-[^L][^ ]*||g; s| -[^L][^ ]*||g; s|^ ||; s| *$||g'
  fi
}

L_to_PATH()
{
echo $1 >> $LOG
  if [ "$OS" = "darwin" ]; then
    echo "$1"|$KBUILD_SED 's|-F\([^ ]\+\)|\1|g; s|^-[^F][^ ]*||g; s| -[^F][^ ]*||g; s|^ ||; s| *$||g; s| |:|g'
  else
    echo "$1"|$KBUILD_SED 's|-L\([^ ]\+\)|\1|g; s|^-[^L][^ ]*||g; s| -[^L][^ ]*||g; s|^ ||; s| *$||g; s| |:|g'
  fi
}

strip_I()
{
  echo "$1"|$KBUILD_SED 's|-I\([^ ]\+\)|\1|g; s|^-[^I][^ ]*||g; s| -[^I][^ ]*||g; s|^ ||; s| *$||g'
}

prefix_I()
{
  echo "$1"|$KBUILD_SED 's|^\/|-I/|g; s| \/| -I/|g'
}

check_avail()
{
   if [ -z "$1" ]; then
     log_failure "$2 is empty"
     fail $3
     return 1
   elif which_wrapper $1 > /dev/null; then
     return 0
   else
     log_failure "$1 (variable $2) not found"
     fail $3
     return 1
   fi
}


# Prepare a test
test_header()
{
  echo "***** Checking $1 *****" >> $LOG
  $ECHO_N "Checking for $1: "
}


# Compile a test
#  $1   compile flags/libs
#  $2   library name
#  $3   package name
#  $4   if this argument is 'nofatal', don't abort
test_compile()
{
  echo "compiling the following source file:" >> $LOG
  cat $ODIR.tmp_src.cc >> $LOG
  echo "using the following command line:" >> $LOG
  echo "$CXX $CXX_FLAGS -fPIC -g -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.cc $1" >> $LOG
  $CXX $CXX_FLAGS -fPIC -g -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.cc $1 >> $LOG 2>&1
  if [ $? -ne 0 ]; then
    if [ -z "$4" ]; then
      echo
      echo "  $2 not found at $1 or $3 headers not found"
      echo "  Check the file $LOG for detailed error information."
      fail
    else
      echo >> $LOG
      echo >> $LOG
    fi
    return 1
  fi
  return 0
}


# Execute a compiled test binary
test_execute()
{
  echo "executing the binary" >> $LOG
  $ODIR.tmp_out > $ODIR.test_execute.log 2>&1
  rc=$?
  cat $ODIR.test_execute.log | tee -a $LOG
  if [ $rc -ne 0 ]; then
    fail $1
    return 1
  fi
  echo >> $LOG
  echo >> $LOG
  return 0
}


# Execute a compiled test binary
test_execute_path()
{
  ## LD_LIBRARY_PATH to set.
  local_path="${1}"
  ## Set this to non-empty to make this test non-fatal.
  local_nofail="${2}"
  echo "executing the binary (LD_LIBRARY_PATH=$1:$LD_LIBRARY_PATH)" >> $LOG
  LD_LIBRARY_PATH="${local_path}:$LD_LIBRARY_PATH" $ODIR.tmp_out > $ODIR.test_execute.log 2>&1
  rc=$?
  cat $ODIR.test_execute.log | tee -a $LOG
  if [ $rc -ne 0 ]; then
    test -z "${local_nofail}" && fail
    echo >> $LOG
    echo >> $LOG
    return 1
  fi
  echo >> $LOG
  echo >> $LOG
  return 0
}


#
# Check for OS, MACHINE, CPU
#
check_environment()
{
  test_header environment
  BUILD_CPU=`uname -m`
  [ "$OS" = "solaris" ] && BUILD_CPU=`isainfo | cut -f 1 -d ' '`
  case "$BUILD_CPU" in
    i[3456789]86|x86|i86pc|BePC)
      BUILD_MACHINE='x86'
      LIB='lib'
      ;;
    x86_64|amd64)
      BUILD_MACHINE='amd64'
      BUILD_CPU='blend'
      if [ "$OS" != "solaris" ]; then
        # on AMD64 systems, 64bit libs are usually located in /usr/lib64
        # see http://www.pathname.com/fhs/pub/fhs-2.3.html#LIB64
        LIB='lib64'
      else
        # Solaris doesn't seem to subscribe to fhs, libs are usually in
        # a '64' subdirectory of the standard 'lib' dirs while some 64-bit
        # alternative binaries can be found in 'amd64' subdirs of the 'bin'
        # ones. So, in order to find the right stuff (esp. sdl-config) we'll
        # have to make sure the */bin/amd64 dirs are searched before the */bin
        # ones. (The sed has some sideeffects, but they shouldn't harm us...)
        echo "64-bit Solaris detected, hacking the PATH" >> $LOG
        echo "old PATH: $PATH" >> $LOG
        PATH=`echo ":$PATH:" | sed -e 's,\(:[^:]*/bin\):,\1/amd64:\1:,g' \
                                   -e 's/^:*//' -e 's/:*$//g' -e 's/::*/:/g' `
        export PATH
        echo "new PATH: $PATH" >> $LOG
        LIB='lib/64'
      fi
      ;;
    sparc64|sparcv9)
        BUILD_MACHINE='sparc64'
        BUILD_CPU='blend'
        ;;
    sparc32|sparc|sparcv8|sparcv7|sparcv8e)
        BUILD_MACHINE='sparc32'
        BUILD_CPU='blend'
        ;;
    *)
      log_failure "Cannot determine system"
      exit 1
      ;;
  esac
  [ -z "$TARGET_MACHINE" ] && TARGET_MACHINE=$BUILD_MACHINE
  [ -z "$TARGET_CPU"     ] && TARGET_CPU=$BUILD_CPU
  DEVDIR_BIN="$DEVDIR/$OS.$BUILD_MACHINE/bin"
  log_success "Determined build machine: $OS.$BUILD_MACHINE, target machine: $OS.$TARGET_MACHINE"

  echo "KBUILD_HOST=\"$OS\"" >> $ENV
  echo "KBUILD_HOST_ARCH=\"$BUILD_MACHINE\"" >> $ENV
  echo "KBUILD_TARGET=\"$OS\"" >> $ENV
  echo "KBUILD_TARGET_ARCH=\"$TARGET_MACHINE\"" >> $ENV
  echo "KBUILD_TARGET_CPU=\"$TARGET_CPU\"" >> $ENV
  echo "KBUILD_TYPE=\"$BUILD_TYPE\"" >> $ENV
  echo 'export KBUILD_HOST KBUILD_HOST_ARCH KBUILD_TARGET KBUILD_TARGET_ARCH KBUILD_TARGET_CPU KBUILD_TYPE' >> $ENV

  # obsolete legacy stuff:
  echo '' >> $ENV
  echo "# Legacy - do not use:" >> $ENV
  echo 'BUILD_PLATFORM="$KBUILD_HOST"' >> $ENV
  echo 'BUILD_PLATFORM_ARCH="$KBUILD_HOST_ARCH"' >> $ENV
  echo 'BUILD_TARGET="$KBUILD_TARGET"' >> $ENV
  echo 'BUILD_TARGET_ARCH="$KBUILD_TARGET_ARCH"' >> $ENV
  echo 'BUILD_TARGET_CPU="$KBUILD_TARGET_CPU"' >> $ENV
  echo 'BUILD_TYPE="$KBUILD_TYPE"' >> $ENV
  echo 'export BUILD_PLATFORM BUILD_PLATFORM_ARCH BUILD_TARGET BUILD_TARGET_ARCH BUILD_TARGET_CPU BUILD_TYPE' >> $ENV
  echo '' >> $ENV
}

#
# Check for gcc with version >= 3.2.
# We depend on a working gcc, if we fail terminate in every case.
#
check_gcc()
{
  test_header gcc
  if check_avail "$CC" CC really; then
    cc_ver=`$CC -dumpfullversion 2>/dev/null`
    if [ $? -ne 0 ]; then
      cc_ver=`$CC -dumpversion 2>/dev/null`
    fi
    if [ $? -ne 0 ]; then
      log_failure "cannot execute '$CC -dumpversion'"
      fail really
    fi
    if check_avail "$CXX" CXX really; then
      cxx_ver=`$CXX -dumpfullversion 2>/dev/null`
      if [ $? -ne 0 ]; then
        cxx_ver=`$CXX -dumpversion 2>/dev/null`
      fi
      if [ $? -ne 0 ]; then
        log_failure "cannot execute '$CXX -dumpversion'"
        fail really
      fi
      cc_maj=`echo $cc_ver|cut -d. -f1`
      cc_min=`echo $cc_ver|cut -d. -f2`
      if [ "x$cc_ver" != "x$cxx_ver" ]; then
        log_failure "gcc version $cc_ver does not match g++ version $cxx_ver"
        fail really
      elif [ $cc_maj -eq 4 -a $cc_min -eq 0 -a "$OS" = "darwin" ]; then
        log_success "found version $cc_ver"
      # gcc-4.0 is allowed for Darwin only
      elif [ $cc_maj -eq 4 -a $cc_min -eq 2 -a "$OS" = "freebsd" ]; then
        log_success "found version $cc_ver"
      # gcc-4.2 is allowed for FreeBSD only
      elif [ $cc_maj -lt 4 \
             -o \( $cc_maj -eq 4 -a $cc_min -lt 4 -a "$OS" != "darwin" \) \
             -o \( $cc_maj -eq 4 -a $cc_min -lt 2 -a "$OS"  = "darwin" \) ]; then
        log_failure "gcc version $cc_maj.$cc_min found, expected gcc 4.x or later"
        fail really
      else
        log_success "found version $cc_ver"
      fi
      if [ "$BUILD_MACHINE" = "amd64" ]; then
        [ -z "$CC32"  ] && CC32="$CC -m32"
        [ -z "$CXX32" ] && CXX32="$CXX -m32"
      else
        [ -z "$CC32"  ] && CC32="$CC"
        [ -z "$CXX32" ] && CXX32="$CXX"
      fi
      if [ "$BUILD_MACHINE" = "x86" -a "$TARGET_MACHINE" = "amd64" ]; then
        [ -z "$CC64"  ] && CC64="$CC -m64"
        [ -z "$CXX64" ] && CXX64="$CXX -m64"
      fi
      if [ "$TARGET_MACHINE" = "amd64" -a $WITH_VMMRAW -eq 0 ]; then
        CC32="undefined"
        CXX32="undefined"
      fi
      if [ "$CC" != "gcc" ]; then
        cnf_append "TOOL_GCC3_CC"   "$CC"
        cnf_append "TOOL_GCC3_AS"   "$CC"
        cnf_append "TOOL_GCC3_LD"   "$CC"
        cnf_append "TOOL_GXX3_CC"   "$CC"
        cnf_append "TOOL_GXX3_AS"   "$CC"
      fi
      if [ "$CXX" != "g++" ]; then
        cnf_append "TOOL_GCC3_CXX"  "$CXX"
        cnf_append "TOOL_GXX3_CXX"  "$CXX"
        cnf_append "TOOL_GXX3_LD"   "$CXX"
      fi
      if [ "$CC32" != "gcc -m32" -a "$CC32" != "undefined" ]; then
        cnf_append "TOOL_GCC32_CC"  "$CC32"
        cnf_append "TOOL_GCC32_AS"  "$CC32"
        cnf_append "TOOL_GCC32_LD"  "$CC32"
        cnf_append "TOOL_GXX32_CC"  "$CC32"
        cnf_append "TOOL_GXX32_AS"  "$CC32"
      fi
      if [ "$CXX32" != "g++ -m32" -a "$CXX32" != "undefined" ]; then
        cnf_append "TOOL_GCC32_CXX" "$CXX32"
        cnf_append "TOOL_GXX32_CXX" "$CXX32"
        cnf_append "TOOL_GXX32_LD"  "$CXX32"
      fi
      # this isn't not necessary, there is not such tool.
      if [ -n "$CC64" ]; then
        cnf_append "TOOL_GCC64_CC"  "$CC64"
        cnf_append "TOOL_GCC64_AS"  "$CC64"
        cnf_append "TOOL_GCC64_LD"  "$CC64"
        cnf_append "TOOL_GXX64_CC"  "$CC64"
        cnf_append "TOOL_GXX64_AS"  "$CC64"
      fi
      if [ -n "$CXX64" ]; then
        cnf_append "TOOL_GCC64_CXX" "$CXX64"
        cnf_append "TOOL_GXX64_CXX" "$CXX64"
        cnf_append "TOOL_GXX64_LD"  "$CXX64"
      fi
      if [ "$CC" != "gcc" ]; then
        if [ -n "$CC64" ]; then
          cnf_append "TOOL_Bs3Gcc64Elf64_CC"  "$CC64"
        else
          cnf_append "TOOL_Bs3Gcc64Elf64_CC"  "$CC"
        fi
        if [ -n "$CXX64" ]; then
          cnf_append "TOOL_Bs3Gcc64Elf64_CXX" "$CXX64"
        else
          cnf_append "TOOL_Bs3Gcc64Elf64_CXX" "$CXX"
        fi
      fi
      # Solaris sports a 32-bit gcc/g++.
      if [ "$OS" = "solaris" -a "$BUILD_MACHINE" = "amd64" ]; then
        [ "$CC" = "gcc" ] && CC="gcc -m64"
        [ "$CXX" = "g++" ] && CXX="g++ -m64"
      fi
    fi
  fi
}


#
# Check for the OpenWatcom compiler, needed for compiling the BIOS
#
# If the system has Open Watcom installed, WATCOM will be set in the
# environment.  If the user has her/his own Open Watcom install it will be
# pointed to by on the command line, which will set the WATCOM variable.
# The only exception is detecting OpenWatcom in tools/common/openwatcom.
#
check_open_watcom()
{
  test_header "Open Watcom"

  if [ -z "$WATCOM" ]; then
    WATCOM=`/bin/ls -rd1 $DEVDIR/common/openwatcom/* 2> /dev/null | head -1`
    if [ -z "$WATCOM" ]; then
      if [ $OSE -eq 0 -a $OS = "linux" ]; then
        log_failure "Open Watcom was not found"
        exit 1
      fi
      log_failure "Open Watcom was not found, using alternative BIOS sources"
      cnf_append "VBOX_WITH_OPEN_WATCOM" ""
      return 0;
    fi
  fi

  case "$OS" in
    "darwin")   wc_bin="binosx";;  # ??
    "dos")      wc_bin="binw";;
    "freebsd")  wc_bin="binfbsd";; # ??
    "linux")    wc_bin="binl";;
    "netbsd")   wc_bin="binnbsd";; # ??
    "solaris")  wc_bin="binsol";;  # ??
    "os2")      wc_bin="binp";;
    "win")      wc_bin="binnt";;
    *)          wc_bin="binl";;
  esac

  # Check that the tools we use are there.
  for prog in wasm wcc wlink;
  do
    if [ ! -f "$WATCOM/$wc_bin/$prog" ]; then
      log_failure "$WATCOM/$wc_bin/$prog does not exist or is not a regular file."
      fail
    fi
  done

  # Use WASM to get the version.
  wasm_ver=`$WATCOM/$wc_bin/wasm -? 2>&1 | sed -e '1!d' -e 's/Open Watcom Assembler Version *//'`
  if [ -z "$wasm_ver" ]; then
    log_failure "$WATCOM/$wc_bin/wasm -? did not produce the expected response"
    fail
  fi
  log_success "found version $wasm_ver"
  cnf_append "PATH_TOOL_OPENWATCOM" "$WATCOM"
  cnf_append "VBOX_WITH_OPEN_WATCOM" "1"

  unset wasm_ver
  unset wc_wasm
  unset wc_bin
}


#
# Check for yasm, needed to compile assembler files
#
check_yasm()
{
  test_header yasm
  if check_avail "$YASM" YASM; then
    yasm_ver=`$YASM --version|grep "^yasm"|sed 's+^yasm \(.*\)+\1+'`
    if [ $? -ne 0 ]; then
      log_failure "yasm not found"
      fail
    else
      yasm_maj=`echo $yasm_ver|cut -d. -f1`
      yasm_min=`echo $yasm_ver|cut -d. -f2`
      yasm_rev=`echo $yasm_ver|cut -d. -f3`
      yasm_ver_mul=`expr $yasm_maj \* 10000 + $yasm_min \* 100 + $yasm_rev`
      if [ $yasm_ver_mul -lt 10300 ]; then
        log_failure "found version $yasm_ver, expected at least 1.3.0"
        fail
      else
        [ "$YASM" != "yasm" ] && cnf_append "PATH_TOOL_YASM" "`dirname $YASM`"
        log_success "found version $yasm_ver"
      fi
    fi
  fi
}


#
# Check for the iasl ACPI compiler, needed to compile vbox.dsl
#
check_iasl()
{
  test_header iasl
  if check_avail "$IASL" IASL; then
    iasl_ver=`$IASL|grep "ASL.*version"|sed 's+^ASL.*version \([0-9]*\).*+\1+'`
    if [ $? -ne 0 ]; then
      log_failure "iasl not found"
      fail
    else
      log_success "found version $iasl_ver"
      cnf_append "VBOX_IASLCMD" "`which_wrapper $IASL`"
    fi
  fi
}


#
# Check for xsltproc, needed by Main
#
check_xsltproc()
{
  if [ -n "$BUILD_LIBXSLT" ]; then
      return 0;
  fi
  test_header xslt
  if check_avail "$XSLTPROC" XSLTPROC; then
    xsltproc_ver=`$XSLTPROC --version`
    if [ $? -ne 0 ]; then
      log_failure "xsltproc not found"
      fail
    else
      log_success "found"
      cnf_append "VBOX_XSLTPROC" "`which_wrapper $XSLTPROC`"
    fi
  fi
}


#
# Check for libxml2, needed by the Runtime.
# 2.6.24 is known to NOT work, 2.6.26 is known to work (there is no 2.6.25 release)
#
check_libxml2()
{
  if [ -z "$BUILD_LIBXML2" ]; then
    test_header libxml2
    if which_wrapper pkg-config > /dev/null; then
      libxml2_ver=`pkg-config libxml-2.0 --modversion 2>> $LOG`
      if [ $? -ne 0 ]; then
        log_failure "libxml2 not found"
        fail
      else
        FLGXML2=`pkg-config libxml-2.0 --cflags`
        INCXML2=`strip_I "$FLGXML2"`
        LIBXML2=`pkg-config libxml-2.0 --libs`
        cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <libxml/xmlversion.h>
extern "C" int main(void)
{
  printf("found version %s", LIBXML_DOTTED_VERSION);
#if LIBXML_VERSION >= 20626
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 2.6.26 or higher\n");
  return 1;
#endif
}
EOF
        [ -n "$INCXML2" ] && I_INCXML2=`prefix_I "$INCXML2"`
        if test_compile "$LIBXML2 $LIBPTHREAD $I_INCXML2" xml2 xml2; then
          if test_execute; then
            cnf_append "SDK_VBoxLibXml2_DEFS" "_REENTRANT" ## @todo get defines from --cflags
            cnf_append "SDK_VBoxLibXml2_INCS" "$INCXML2"
            cnf_append "SDK_VBoxLibXml2_LIBS" "`strip_l "$LIBXML2"`"
          fi
        fi
      fi
    elif which_wrapper xml2-config; then
      libxml2_ver=`xml2-config --version`
      if [ $? -ne 0 ]; then
        log_failure "xml2-config not found"
        fail
      else
        log_success "found version $libxml2_ver"
        FLGXML2=`xml2-config --cflags`
        INCXML2=`strip_I "$FLGXML2"`
        LIBXML2=`xml2-config --libs`
        cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <libxml/xmlversion.h>
extern "C" int main(void)
{
  printf("found version %s", LIBXML_DOTTED_VERSION);
#if LIBXML_VERSION >= 20626
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 2.6.26 or higher\n");
  return 1;
#endif
}
EOF
        [ -n "$INCXML2" ] && I_INCXML2=`prefix_I "$INCXML2"`
        if test_compile "$LIBXML2 $LIBPTHREAD $I_INCXML2" xml2 xml2; then
          if test_execute; then
            cnf_append "SDK_VBoxLibXml2_DEFS" "_REENTRANT" ## @todo get defines from --cflags
            cnf_append "SDK_VBoxLibXml2_INCS" "$INCXML2"
            cnf_append "SDK_VBoxLibXml2_LIBS" "`strip_l "$LIBXML2"`"
          fi
        fi
      fi
    else
      log_failure "neither pkg-config nor xml2-config found"
      fail
    fi
  fi
}


#
# Check for libdevmapper, needed by the VBoxVolInfo
#
check_libdevmapper()
{
  test_header libdevmapper
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
extern "C" {
#define private
#include <libdevmapper.h>
int main()
{
  char version[80];

  if (!dm_get_library_version(version, sizeof(version)))
  {
    printf("dm_get_library_version() failed.\n");
    return 1;
  }

  const char* v=version;
  unsigned int major = 0, minor = 0, micro = 0;

  for (; *v !='.' && *v != '\0'; v++) major = major*10 + *v-'0';
  if (*v == '.') v++;
  for (; *v !='.' && *v != '\0'; v++) minor = minor*10 + *v-'0';
  if (*v == '.') v++;
  for (; *v !='.' && *v != '\0'; v++) micro = micro*10 + *v-'0';

  printf("found version %s", version);
  if (major*10000 + minor*100 + micro >= 10200)
  {
    printf(", OK.\n");
    return 0;
  }
  else
  {
    printf(", expected version 1.02 or higher\n");
    return 1;
  }
}
}
EOF
  if test_compile "$LIBDEVMAPPER $INCDEVMAPPER" libdevmapper libdevmapper; then
    if test_execute; then
      cnf_append "VBOX_WITH_DEVMAPPER" "1"
    fi
  fi
}


#
# Check for openssl, needed for RDP and S3
#
check_ssl()
{
  if [ -z "$BUILD_LIBSSL" ]; then
    test_header ssl
    cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <openssl/opensslv.h>
#include <openssl/ssl.h>
extern "C" int main(void)
{
  printf("found version %s", OPENSSL_VERSION_TEXT);
  SSL_library_init();
#if OPENSSL_VERSION_NUMBER >= 0x10001000
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.0.1 or higher\n");
  return 1;
#endif
}
EOF
    if test_compile "$INCCRYPTO $LIBCRYPTO" libcrypto openssl; then
      if test_execute nofatal; then
        cnf_append "SDK_VBoxOpenSslStatic_INCS" "`strip_I "$INCCRYPTO"`"
        cnf_append "SDK_VBoxOpenSslStatic_LIBS" "`strip_l "$LIBCRYPTO"`"
        cnf_append "SDK_VBoxOpenSslBldProg_LIBS" "`strip_l "$LIBCRYPTO"`"
      fi
    fi
  fi
}


#
# Check for pthread, needed by VBoxSVC, frontends, ...
#
check_pthread()
{
  test_header pthread
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <pthread.h>
extern "C" int main(void)
{
  pthread_mutex_t mutex;
  if (pthread_mutex_init(&mutex, NULL)) {
    printf("pthread_mutex_init() failed\n");
    return 1;
  }
  if (pthread_mutex_lock(&mutex)) {
    printf("pthread_mutex_lock() failed\n");
    return 1;
  }
  if (pthread_mutex_unlock(&mutex)) {
    printf("pthread_mutex_unlock() failed\n");
    return 1;
  }
  printf("found, OK.\n");
}
EOF
  if test_compile $LIBPTHREAD pthread pthread; then
    if test_execute; then
      cnf_append "LIB_PTHREAD" "`strip_l "$LIBPTHREAD"`"
    fi
  fi
}


#
# Check for zlib, needed by VBoxSVC, Runtime, ...
#
check_z()
{
  test_header zlib
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <zlib.h>
extern "C" int main(void)
{
  printf("found version %s", ZLIB_VERSION);
#if ZLIB_VERNUM >= 0x1210
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.2.1 or higher\n");
  return 1;
#endif
}
EOF
  [ -n "$INCZ" ] && I_INCZ=`prefix_I "$INCZ"`
  if test_compile "$LIBZ $I_INCZ" zlib zlib; then
    if test_execute; then
      echo "if1of (\$(KBUILD_TARGET),darwin freebsd haiku linux)" >> $CNF
      cnf_append " SDK_VBoxZlib_LIBS" "`strip_l "$LIBZ"`"
      cnf_append " SDK_VBoxZlib_INCS" "$INCZ"
      echo "endif" >> $CNF
    fi
  fi
}


#
# Check for liblzf, needed by VBoxSVC, Runtime, ...
#
check_lzf()
{
  test_header liblzf
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <lzf.h>
extern "C" int main(void)
{
  printf("found LZF API version %u.%u", LZF_VERSION >> 8, LZF_VERSION & 0xff);
#if LZF_VERSION >= 0x0105
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.5 or higher\n");
  return 1;
#endif
}
EOF
  [ -n "$INCLZF" ] && I_INCLZF=`prefix_I "$INCLZF"`
  if test_compile "$LIBLZF $I_INCLZF" liblzf liblzf nofatal; then
    if test_execute; then
      echo "if1of (\$(KBUILD_TARGET),darwin freebsd haiku linux)" >> $CNF
      cnf_append " SDK_VBoxLzf_LIBS" "`strip_l "$LIBLZF"`"
      cnf_append " SDK_VBoxLzf_INCS" "$INCLZF"
      echo "endif" >> $CNF
    fi
  else
    echo "not found -- builing liblzf from in-tree code."
  fi
}


#
# Check for libpng, needed by kchmviewer
#
check_png()
{
  test_header libpng
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <png.h>
extern "C" int main(void)
{
  printf("found version %s", PNG_LIBPNG_VER_STRING);
#if PNG_LIBPNG_VER >= 10205
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.2.5 or higher\n");
  return 1;
#endif
}
EOF
  [ -n "$INCPNG" ] && I_INCPNG=`prefix_I "$INCPNG"`
  if test_compile "$LIBPNG $I_INCPNG" libpng libpng; then
    if test_execute; then
      cnf_append "SDK_VBoxLibPng_LIBS" "`strip_l "$LIBPNG"`"
      cnf_append "SDK_VBoxLibPng_INCS" "$INCPNG"
    fi
  fi
}

#
# Check for libvncserver, needed for VNC in OSE
#
check_vncserver()
{
  test_header libvncserver
  cat > $ODIR.tmp_src.cc <<EOF
#include <cstdio>
#include <rfb/rfbconfig.h>

extern "C" int main()
{
  const char* v=LIBVNCSERVER_VERSION;
  unsigned int major = 0, minor = 0, micro = 0;

  for (; *v !='.' && *v != '\0'; v++) major = major*10 + *v-'0';
  if (*v == '.') v++;
  for (; *v !='.' && *v != '\0'; v++) minor = minor*10 + *v-'0';
  if (*v == '.') v++;
  for (; *v !='.' && *v != '\0'; v++) micro = micro*10 + *v-'0';

  printf("found version %s", LIBVNCSERVER_PACKAGE_VERSION);
  if (major*10000 + minor*100 + micro >= 900)
  {
    printf(", OK.\n");
    return 0;
  }
  else
  {
    printf(", expected version 0.9 or higher\n");
    return 1;
  }
}
EOF
  if test_compile "$LIBVNCSERVER $INCVNCSERVER" libvncserver libvncserver; then
    if test_execute; then
      cnf_append "VBOX_WITH_EXTPACK_VNC" "1"
    fi
  fi
}

#
# Check for libcurl, needed by S3
#
check_curl()
{
  if [ -z "$BUILD_LIBCURL" ]; then
    test_header libcurl
    cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <curl/curl.h>
extern "C" int main(void)
{
  printf("found version %s", LIBCURL_VERSION);
#if 10000*LIBCURL_VERSION_MAJOR + 100*LIBCURL_VERSION_MINOR + LIBCURL_VERSION_PATCH >= 71901
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 7.19.1 or higher\n");
  return 1;
#endif
}
EOF
    [ -n "$INCCURL" ] && I_INCCURL=`prefix_I "$INCCURL"`
    if test_compile "$LIBCURL $I_INCCURL" libcurl libcurl; then
      if test_execute; then
        cnf_append "SDK_VBoxLibCurl_LIBS" "`strip_l "$LIBCURL"`"
        cnf_append "SDK_VBoxLibCurl_INCS" "$INCCURL"
      fi
    fi
  fi
}


#
# Check for pam, needed by VRDPAuth
# Version 79 was introduced in 9/2005, do we support older versions?
# Debian/sarge uses 76
# OpenSUSE comes with 0.99.xxx where they changed the versioning scheme.
#
check_pam()
{
  test_header pam
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <security/pam_appl.h>
extern "C" int main(void)
{
  printf("found version %d", __LIBPAM_VERSION);
  if (__LIBPAM_VERSION >= 76)
  {
    printf(", OK.\n");
    return 0;
  }
  else
  {
    printf(", expected version 76 or higher\n");
    return 1;
  }
}
EOF
  if test_compile "-lpam" pam pam nofatal; then
    if test_execute nofatal; then
      return 0;
    fi
  fi
  echo "pam0.x not found"
  test_header linux_pam
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <security/pam_appl.h>
extern "C" int main(void)
{
  printf("found version %d.%d", __LINUX_PAM__, __LINUX_PAM_MINOR__);
  if (__LINUX_PAM__ >= 1)
  {
    printf(", OK.\n");
    return 0;
  }
  else
  {
    printf(", expected version 1.0 or higher\n");
    return 1;
  }
}
EOF
  if test_compile "-lpam" pam pam; then
    test_execute
  fi
}


#
# Check for the SDL library, needed by VBoxSDL and VirtualBox
# We depend at least on version 1.2.7
#
check_sdl()
{
  test_header SDL
  if [ "$OS" = "darwin" ]; then
    if [ -f "/System/Library/Frameworks/SDL.framework/SDL" ]; then
      PATH_SDK_LIBSDL="/System/Library/Frameworks/SDL.framework"
    elif [ -f "/Library/Frameworks/SDL.framework/SDL" ]; then
      PATH_SDK_LIBSDL="/Library/Frameworks/SDL.framework"
    fi
    if [ -n "$PATH_SDK_LIBSDL" ]; then
      foundsdl=1
      INCSDL="$PATH_SDK_LIBSDL/Headers"
      FLDSDL="-framework SDL"
    else
      log_failure "SDL framework not found"
      fail
    fi
  else
    if which_wrapper sdl-config > /dev/null; then
      FLGSDL=`sdl-config --cflags`
      INCSDL=`strip_I "$FLGSDL"`
      LIBSDL=`sdl-config --libs`
      LIBSDLMAIN="-lSDLmain"
      FLDSDL=
      foundsdl=1
    fi
  fi
  [ "$OS" = "linux" -o "$OS" = "darwin" -o "$OS" = "solaris" ] && LIBSDLMAIN=""
  if [ -n "$foundsdl" ]; then
    cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <SDL.h>
#include <SDL_main.h>
#undef main
extern "C" int main(int argc, char** argv)
{
  printf("found version %d.%d.%d",
         SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);
#if SDL_VERSION_ATLEAST(1,2,7)
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.2.7 or higher\n");
  return 1;
#endif
}
EOF
    [ -n "$INCSDL" ] && I_INCSDL=`prefix_I "$INCSDL"`
    if test_compile "$LIBSDL $LIBSDLMAIN $I_INCSDL $FLDSDL" SDL SDL; then
      if test_execute; then
        cnf_append "LIB_SDK_LIBSDL_SDL"     "`strip_l "$LIBSDL"`"
        cnf_append "SDK_LIBSDL_LIBPATH"     "`strip_L "$LIBSDL"`"
        cnf_append "LIB_SDK_LIBSDL_SDLMAIN" "`strip_l "$LIBSDLMAIN"`"
        [ -n "$INCSDL" ] && cnf_append "SDK_LIBSDL_INCS"    "$INCSDL"
        [ -n "$FLDSDL" ] && cnf_append "SDK_LIBSDL_LDFLAGS" "$FLDSDL"
      fi
    fi
  else
    log_failure "SDL not found (can be disabled using --disable-sdl)"
    fail
  fi
}


#
# Check for the SDL_ttf library, needed by VBoxSDL (secure label)
#
check_sdl_ttf()
{
  test_header SDL_ttf
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <SDL_ttf.h>
#ifndef SDL_TTF_MAJOR_VERSION
#define SDL_TTF_MAJOR_VERSION TTF_MAJOR_VERSION
#define SDL_TTF_MINOR_VERSION TTF_MINOR_VERSION
#define SDL_TTF_PATCHLEVEL    TTF_PATCHLEVEL
#endif
extern "C" int main(void)
{
  printf("found version %d.%d.%d",
         SDL_TTF_MAJOR_VERSION, SDL_TTF_MINOR_VERSION, SDL_TTF_PATCHLEVEL);
#if 10000*SDL_TTF_MAJOR_VERSION + 100*SDL_TTF_MINOR_VERSION + SDL_TTF_PATCHLEVEL >= 20006
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 2.0.6 or higher\n");
  return 1;
#endif
}
EOF
  if test_compile "-lSDL_ttf $I_INCSDL" SDL_ttf SDL_ttf nofatal; then
    test_execute nofatal || \
      cnf_append "VBOX_WITH_SECURELABEL" ""
  else
    echo "not found -- disabling VBoxSDL secure label."
    cnf_append "VBOX_WITH_SECURELABEL" ""
  fi
}


#
# Check for libasound, needed by the ALSA audio backend
#
check_alsa()
{
  test_header ALSA
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <alsa/asoundlib.h>
extern "C" int main(void)
{
  printf("found version %d.%d.%d",
         SND_LIB_MAJOR, SND_LIB_MINOR, SND_LIB_SUBMINOR);
#if 10000*SND_LIB_MAJOR + 100*SND_LIB_MINOR + SND_LIB_SUBMINOR >= 10014
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.0.14 or higher\n");
  return 1;
#endif
}
EOF
  if test_compile "-lasound" asound asound; then
    test_execute
  fi
}


#
# Check for PulseAudio
#
check_pulse()
{
  test_header "PulseAudio"
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <pulse/version.h>
extern "C" int main(void)
{
  printf("found version %s API version %d", pa_get_headers_version(), PA_API_VERSION);
#if PA_API_VERSION >= 9
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 0.9.0 (API version 9) or higher\n");
  return 1;
#endif
}
EOF
  if test_compile "$INCPULSE $LIBPULSE -lpulse" pulse pulse nofatal; then
    if test_execute nofatal; then
      cnf_append "VBOX_WITH_AUDIO_PULSE" "1"
    else
      cnf_append "VBOX_WITH_AUDIO_PULSE" ""
    fi
  else
    cnf_append "VBOX_WITH_AUDIO_PULSE" ""
  fi
}


#
# Check for the X libraries (Xext, X11)
#
check_x()
{
  test_header "X libraries"
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <X11/Xlib.h>
extern "C" int main(void)
{
  Display *dpy;
  int scrn_num;
  Screen *scrn;
  Window win;

  dpy      = XOpenDisplay(NULL);
  scrn_num = DefaultScreen(dpy);
  scrn     = ScreenOfDisplay(dpy, scrn_num);
  win      = XCreateWindow(dpy, RootWindowOfScreen(scrn), 0, 0, 100, 100,
                           0, 16, InputOutput, CopyFromParent, 0, NULL);
  XDestroyWindow(dpy, win);
  XCloseDisplay(dpy);
}
EOF
  [ -n "$INCX11" ] && I_INCX11=`prefix_I "$INCX11"`
  if test_compile "$LIBX11 $I_INCX11" Xlibs Xlibs; then
    log_success "found"
  fi
}


#
# Check for the Xcursor library, needed by VBoxSDL.
#
check_xcursor()
{
  test_header Xcursor
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <X11/Xlib.h>
#include <X11/Xcursor/Xcursor.h>
extern "C" int main(void)
{
  XcursorImage *cursor = XcursorImageCreate (10, 10);
  XcursorImageDestroy(cursor);
  return 0;
}
EOF
  [ -n "$INCX11" ] && I_INCX11=`prefix_I "$INCX11"`
  if test_compile "$LIBX11 $LIBXCURSOR $I_INCX11" Xcursor Xcursor; then
    log_success "found"
    cnf_append "VBOX_XCURSOR_LIBS" "`strip_l "$LIBXCURSOR"`"
  fi
}


#
# Check for the Xinerama library, needed by the Qt GUI
#
check_xinerama()
{
  test_header Xinerama
  cat > $ODIR.tmp_src.cc << EOF
#include <X11/Xlib.h>
#include <X11/extensions/Xinerama.h>
extern "C" int main(void)
{
  Display *dpy;
  Bool flag;
  dpy = XOpenDisplay(NULL);
  if (dpy)
  {
    flag = XineramaIsActive(dpy);
    XCloseDisplay(dpy);
  }
}
EOF
  [ -n "$INCX11" ] && I_INCX11=`prefix_I "$INCX11"`
  if test_compile "$LIBX11 $LIBXINERAMA $I_INCX11" Xinerama Xinerama; then
    log_success "found"
  fi
}


#
# Check for the XRandR library, needed by the Qt GUI
#
check_xrandr()
{
  test_header Xrandr
  cat > $ODIR.tmp_src.cc << EOF
#include <X11/Xlib.h>
#include <X11/extensions/Xrandr.h>
extern "C" int main(void)
{
  Display *dpy;
  Bool flag;
  int major, minor;
  dpy = XOpenDisplay(NULL);
  if (dpy)
  {
    flag = XRRQueryVersion(dpy, &major, &minor);
    XCloseDisplay(dpy);
  }
}
EOF
  [ -n "$INCX11" ] && I_INCX11=`prefix_I "$INCX11"`
  if test_compile "$LIBX11 $LIBXRANDR $I_INCX11" Xrandr Xrandr; then
    log_success "found"
  fi
}


#
# Check for OpenGL
#
check_opengl()
{
  # On darwin this is a on/off decision only
  if [ "$OS" = "darwin" ]; then
    test_header "OpenGL support"
    echo "enabled"
  else
    check_xmu
    check_mesa
  fi
}


#
# Check for the Xmu library, needed by OpenGL
#
check_xmu()
{
  test_header Xmu
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xmu/StdCmap.h>
extern "C" int main(void)
{
  Display *dpy;
  int scrn_num;
  Screen *scrn;

  dpy = XOpenDisplay(NULL);
  if (dpy)
  {
    scrn_num = DefaultScreen(dpy);
    scrn     = ScreenOfDisplay(dpy, scrn_num);
    Status status = XmuLookupStandardColormap(dpy, RootWindowOfScreen(scrn), 0,
                    24, XA_RGB_DEFAULT_MAP, False, True);
    printf("Status = %x\n", status);
    XCloseDisplay(dpy);
  }
  return 0;
}
EOF
  [ -n "$INCX11" ] && I_INCX11=`prefix_I "$INCX11"`
  if test_compile "$LIBX11 $LIBXMU $I_INCX11" Xmu Xmu; then
    log_success "found"
    cnf_append "VBOX_XMU_LIBS" "`strip_l "$LIBXMU"`"
  fi
}

#
# Check for Mesa, needed by OpenGL
#
check_mesa()
{
  test_header "Mesa / GLU"
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <X11/Xlib.h>
#include <GL/glx.h>
#include <GL/glu.h>
extern "C" int main(void)
{
  Display *dpy;
  int major, minor;

  dpy = XOpenDisplay(NULL);
  if (dpy)
  {
    Bool glx_version = glXQueryVersion(dpy, &major, &minor);
    XCloseDisplay(dpy);
    if (glx_version)
    {
      printf("found version %u.%u, OK.\n", major, minor);
      return 0;
    }
  }
  printf("found (inactive), OK.\n");
  return 0;
}
EOF
  [ -n "$INCX11" ] && I_INCX11=`prefix_I "$INCX11"`
  if test_compile "$LIBX11 $MESA $I_INCX11" Mesa Mesa; then
    [ $PASSIVE_MESA -eq 1 ] && unset DISPLAY
    test_execute
  fi
}


#
# Check for the Qt6 library, needed by the VirtualBox frontend
#
# Currently not fatal.
#
check_qt6()
{
  foundqt6=
  test_header Qt6
  cat > $ODIR.tmp_src.cc << EOF
#include <QtGlobal>
extern "C" int main(void)
{
EOF
  echo "#if QT_VERSION >= $(($QT6MAJ*65536+$QT6MIN*256))" >> $ODIR.tmp_src.cc
  cat >> $ODIR.tmp_src.cc << EOF
  return 0;
#else
  return 1;
#endif
}
EOF
  if [ "$OS" = "darwin" ]; then
    # First check if there is the internal version of Qt. If yes nothing else
    # has to be done.
    QT_INTERNAL=`/bin/ls -rd1 $DEVDIR/$BUILD_TARGET.$BUILD_PLATFORM_ARCH/qt/* 2> /dev/null`
    for t in $QT_INTERNAL; do
      if [ -f "$t/Frameworks/QtCoreVBox.framework/QtCoreVBox" ]; then
        cnf_append "VBOX_WITH_ORACLE_QT" "1"
        log_success "use internal version"
        return
      fi
    done
    # Now try the user provided directory and some of the standard directories.
    QT_TRIES="$QT6DIR /System/Library /Library"
    for t in $QT_TRIES; do
      if [ -f "$t/Frameworks/QtCore.framework/QtCore" -o -f "$t/clang_64/lib/QtCore.framework/QtCore" -o -f "$t/lib/QtCore.framework/QtCore" ]; then
        PATH_SDK_QT6="$t"
        foundqt6=1
        break
      fi
    done
    # Add the necessary params for building the test application
    if [ -n "$PATH_SDK_QT6" ]; then
      if [ -f "$t/lib/QtCore.framework/QtCore" ]; then
        INCQT6=-I$PATH_SDK_QT6/lib/QtCore.framework/Headers
        LIBQT6=-F$PATH_SDK_QT6/lib
        SDKQT6=$PATH_SDK_QT6
      elif [ -f "$t/clang_64/lib/QtCore.framework/QtCore" ]; then
        INCQT6=-I$PATH_SDK_QT6/clang_64/lib/QtCore.framework/Headers
        LIBQT6=-F$PATH_SDK_QT6/clang_64/lib
        SDKQT6=$PATH_SDK_QT6/clang_64
      else
        INCQT6=-I$PATH_SDK_QT6/Frameworks/QtCore.framework/Headers
        LIBQT6=-F$PATH_SDK_QT6/Frameworks
        SDKQT6=$PATH_SDK_QT6
      fi
      FLGQT6="-framework QtCore -std=c++17 -Wl,-rpath,`L_to_PATH "$LIBQT6"`"
    else
      log_failure "Qt6 framework not found (can be disabled using --disable-qt)"
      fail
    fi
  else # !darwin
    if [ $QT6DIR_PKGCONFIG -eq 1 ]; then
      # Default is to use pkg-config:
      if which_wrapper pkg-config > /dev/null; then
        qt6_ver=`pkg-config Qt6Core --modversion 2>> $LOG`
        if [ $? -eq 0 ]; then
          echo "(Qt6 from pkg-config)" >> $LOG
          FLGQT6=`pkg-config Qt6Core --cflags`
          # gcc 8.0 is able to compile with C++17 (see also VBOX_GCC_std in Config.kmk)
          [ $(($cc_maj * 100 + $cc_min)) -ge 408 ] && FLGQT6="$FLGQT6 -std=c++17"
          INCQT6=`strip_I "$FLGQT6"`
          LIBDIR5=`pkg-config Qt6Core --variable=libdir`
          LIBQT6=`pkg-config Qt6Core Qt6Gui --libs`
          LIBQT6="-L$LIBDIR5 $LIBQT6"
          TOOLQT6=`pkg-config Qt6Core --variable=prefix`
          TOOLQT6BIN=`pkg-config Qt6Core --variable=bindir`
          TOOLQT6LIBEXEC=`pkg-config Qt6Core --variable=libexecdir`
          if test_compile "$LIBQT6 $LIBPTHREAD $FLGQT6" qt6 qt6 nofatal; then
            test_execute_path "`L_to_PATH "$LIBQT6"`" nofatal && foundqt6=3 # pkg-config
          fi
        fi
      else
        log_failure "pkg-config not found"
        fail
      fi
    fi
    if [ -z "$foundqt6" ]; then
      # Do it the old way (e.g. user has specified QT6DIR):
      for q in $QT6DIR "$DEVDIR/linux.$TARGET_MACHINE"/qt/v6.*; do
        echo "(Qt6 from '$q')" >> $LOG
        INCQT6="$q/include $q/include/QtCore"
        FLGQT6="-DQT_SHARED -std=c++17"
        I_INCQT6=`prefix_I "$INCQT6"`
        LIBQT6="-L$q/lib -lQt6CoreVBox -lQt6GuiVBox"
        TOOLQT6="$q"
        if test_compile "$LIBQT6 $LIBPTHREAD $I_INCQT6 $FLGQT6" qt6 qt6 nofatal &&
            test_execute_path "`L_to_PATH "$LIBQT6"`" nofatal; then
          foundqt6=2 # internal
          break;
        fi
        LIBQT6="-L$q/lib -lQt6Core -lQt6Gui"
        if test_compile "$LIBQT6 $LIBPTHREAD $I_INCQT6 $FLGQT6" qt6 qt6 nofatal &&
            test_execute_path "`L_to_PATH "$LIBQT6"`" nofatal; then
          foundqt6=1 # no pkg-config, Qt directory
          break;
        fi
      done
    fi
  fi
  if [ -n "$foundqt6" ]; then
    # We decided which version of Qt to use, now enforce the version requirement:
    cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <QtGlobal>
extern "C" int main(void)
{
  printf("found version %s", QT_VERSION_STR);
EOF
  echo "#if QT_VERSION >= $(($QT6MAJ*65536+$QT6MIN*256))" >> $ODIR.tmp_src.cc
    cat >> $ODIR.tmp_src.cc << EOF
  printf(", OK.\n");
  return 0;
#else
EOF
echo "  printf(\", expected version $QT6MAJ.$QT6MIN or higher\\\\n\");" >> $ODIR.tmp_src.cc
    cat >> $ODIR.tmp_src.cc << EOF
  return 1;
#endif
}
EOF
    [ -n "$INCQT6" ] && I_INCQT6=`prefix_I "$INCQT6"`
    if test_compile "$LIBQT6 $LIBPTHREAD $I_INCQT6 $FLGQT6" qt6 qt6 nofatal; then
      if test_execute_path "`L_to_PATH "$LIBQT6"`"; then
        if [ "$OS" = "darwin" ]; then
          # Successful build & run the test application so add the necessary
          # params to AutoConfig.kmk:
          cnf_append "PATH_SDK_QT6_INC" "`L_to_PATH "$LIBQT6"`"
          cnf_append "PATH_SDK_QT6_LIB" "`L_to_PATH "$LIBQT6"`"
          cnf_append "PATH_SDK_QT6" "$SDKQT6"
          # Check for the moc tool in the Qt directory found & some standard
          # directories.
          for q in $PATH_SDK_QT6 $PATH_SDK_QT6/clang_64 /usr /Developer/Tools/Qt; do
            if which_wrapper "$q/bin/lrelease" > /dev/null; then
              cnf_append "PATH_TOOL_QT6_BIN" "$q/bin"
            fi
            if which_wrapper "$q/libexec/moc" > /dev/null; then
              cnf_append "PATH_TOOL_QT6_LIBEXEC" "$q/libexec"
            fi
          done
        else
          # Strip .../QtCore as we add components ourself:
          INCQT6=`echo "$INCQT6"|$KBUILD_SED 's|\([^ ]*\)/QtCore|\1|g; s| $||g'`
          # store only the first path, remove all other paths
          # most likely pkg-config gave us -I/usr/include/qt6 -I/usr/include/qt6/QtCore
          INCQT6=`echo "$INCQT6"|$KBUILD_SED 's|\([^ ]*\) .*|\1|'`
          cnf_append "VBOX_PATH_QT_LIB" "`strip_L "$LIBQT6"`"
          cnf_append "PATH_SDK_QT6_INC" "$INCQT6"
          # This is not quite right since the qt libpath does not have to be first...
          cnf_append "PATH_SDK_QT6_LIB" '$'"(firstword `strip_L "$LIBQT6"`)"
          if [ "$foundqt6" = "2" ]; then
            cnf_append "VBOX_WITH_ORACLE_QT" "1"
          fi
          if [ "$foundqt6" != "3" ]; then
            TOOLQT6BIN="$TOOLQT6/bin"
            TOOLQT6LIBEXEC="$TOOLQT6/libexec"
          fi
          test_header "Qt6 devtools"
          # Try it with a suffix, some platforms use that
          if which_wrapper "$TOOLQT6LIBEXEC/moc-qt6" > /dev/null; then
            QT6BINSUFF="-qt6"
          else
            QT6BINSUFF=""
          fi
          moc_ver=`$TOOLQT6LIBEXEC/moc$QT6BINSUFF -v 2>&1|sed 's+^.*(Qt \(.*\))+\1+'`
          if [ $? -ne 0 ]; then
            log_failure "moc$QT6BINSUFF not working"
            fail
          else
            log_success "found version $moc_ver"
            cnf_append "VBOX_PATH_QT" "$TOOLQT6"
            cnf_append "PATH_SDK_QT6" "$TOOLQT6"
            cnf_append "PATH_TOOL_QT6_BIN" "$TOOLQT6BIN"
            cnf_append "PATH_TOOL_QT6_LIBEXEC" "$TOOLQT6LIBEXEC"
            [ -n "$QT6BINSUFF" ] && cnf_append "TOOL_QT6_BIN_SUFF" "$QT6BINSUFF"
          fi
        fi
      fi
    else
      log_failure "qt6 not working"
      fail
    fi
  else
    log_failure "qt6 not found"
    fail
  fi
}


#
# Check for libvpx
#
check_vpx()
{
  if [ -z "$BUILD_LIBVPX" ]; then
    test_header libvpx
    if which_wrapper pkg-config > /dev/null; then
      libvpx_ver=`pkg-config vpx --modversion 2>> $LOG`
      if [ $? -eq 0 ]; then
        FLGVPX=`pkg-config vpx --cflags`
        INCVPX=`strip_I "$FLGVPX"`
        LIBVPX=`pkg-config vpx --libs`
      fi
      cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <vpx/vpx_codec.h>
extern "C" int main(void)
{
  int version = vpx_codec_version();
  int verMajor = VPX_VERSION_MAJOR(version);
  int verMinor = VPX_VERSION_MINOR(version);
  int verPatch = VPX_VERSION_PATCH(version);
  printf("found version %d.%d.%d", verMajor, verMinor, verPatch);
  if (   verMajor == 1 && verMinor >= 0
      || verMajor == 0 && verMinor == 9 && verPatch >= 5)
  {
      printf(", OK.\n");
      return 0;
  }
  else
  {
      printf(", expected version 0.9.5 or higher\n");
      return 1;
   }
}
EOF
      [ -n "$INCVPX" ] && I_INCVPX=`prefix_I "$INCVPX"`
      if test_compile "$LIBVPX $I_INCVPX" vpx vpx; then
        if test_execute; then
          cnf_append "SDK_VBoxLibVpx_INCS" "$INCVPX"
          cnf_append "SDK_VBoxLibVpx_LIBS" "`strip_l "$LIBVPX"`"
          fi
      fi
    fi
  fi
}


#
# Check for libtpms
#
check_libtpms()
{
  if [ -z "$BUILD_LIBTPMS" ]; then
    test_header libtpms
    if which_wrapper pkg-config > /dev/null; then
      libtpms_ver=`pkg-config libtpms --modversion 2>> $LOG`
      if [ $? -eq 0 ]; then
        FLGTPMS=`pkg-config libtpms --cflags`
        INCTPMS=`strip_I "$FLGTPMS"`
        LIBTPMS=`pkg-config libtpms --libs`
      fi
      cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <libtpms/tpm_library.h>
extern "C" int main(void)
{
  TPMLIB_MainInit();
  printf("found, OK.\n");
}
EOF
      [ -n "$INCTPMS" ] && I_INCTPMS=`prefix_I "$INCTPMS"`
      if test_compile "$LIBTPMS $I_INCTPMS" libtpms libtpms nofatal; then
        if test_execute; then
          cnf_append "SDK_VBoxLibTpms_INCS" "$INCTPMS"
          cnf_append "SDK_VBoxLibTpms_LIBS" "`strip_l "$LIBTPMS"`"
        fi
      else
        echo "not found -- building libtpms from in-tree code."
      fi
    fi
  fi
}


#
# Check for liblzma
#
check_liblzma()
{
  if [ -z "$BUILD_LIBLZMA" ]; then
    test_header liblzma
    if which_wrapper pkg-config > /dev/null; then
      liblzma_ver=`pkg-config liblzma --modversion 2>> $LOG`
      if [ $? -eq 0 ]; then
        FLGLZMA=`pkg-config liblzma --cflags`
        INCLZMA=`strip_I "$FLGLZMA"`
        LIBLZMA=`pkg-config liblzma --libs`
      fi
      cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <lzma.h>
extern "C" int main(void)
{
  lzma_stream strm = LZMA_STREAM_INIT;
  uint32_t preset;
  lzma_ret ret = lzma_easy_encoder(&strm, preset, LZMA_CHECK_CRC64);
  printf("found, OK.\n");
}
EOF
      [ -n "$INCLZMA" ] && I_INCLZMA=`prefix_I "$INCLZMA"`
      if test_compile "$LIBLZMA $I_INCLZMA" liblzma liblzma nofatal; then
        if test_execute; then
          cnf_append "SDK_VBoxLibLzma_INCS" "$INCLZMA"
          cnf_append "SDK_VBoxLibLzma_LIBS" "`strip_l "$LIBLZMA"`"
        fi
      else
        echo "not found -- building liblzma from in-tree code."
      fi
    fi
  fi
}


#
# Check for libvorbis
#
check_libvorbis()
{
  test_header libvorbis
  if which_wrapper pkg-config > /dev/null; then
    libvorbis_ver=`pkg-config vorbis --modversion 2>> $LOG`
    if [ $? -eq 0 ]; then
      FLGVRB=`pkg-config vorbis --cflags`
      INCVRB=`strip_I "$FLGVRB"`
      LIBVRB=`pkg-config vorbis --libs`
    fi
    cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <vorbis/vorbisenc.h>
extern "C" int main(void)
{
  vorbis_info v;
  vorbis_info_init(&v);
  printf("found, OK.\n");
  return 0;
}
EOF
    [ -n "$INCVRB" ] && I_INCVRB=`prefix_I "$INCVRB"`
    if test_compile "$LIBVRB $I_INCVRB" vorbis vorbis nofatal; then
      if test_execute; then
        cnf_append "SDK_VBoxLibVorbis_INCS" "$INCVRB"
        cnf_append "SDK_VBoxLibVorbis_LIBS" "`strip_l "$LIBVRB"`"
      fi
    else
      echo "not found -- building libvorbis from in-tree code."
    fi
  fi
}


#
# Check for libogg
#
check_libogg()
{
  test_header libogg
  if which_wrapper pkg-config > /dev/null; then
    libogg_ver=`pkg-config ogg --modversion 2>> $LOG`
    if [ $? -eq 0 ]; then
      FLGOGG=`pkg-config ogg --cflags`
      INCOGG=`strip_I "$FLGOGG"`
      LIBOGG=`pkg-config ogg --libs`
    fi
    cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <ogg/ogg.h>
extern "C" int main(void)
{
  oggpack_buffer o;
  oggpack_get_buffer(&o);
  printf("found, OK.\n");
  return 0;
}
EOF
    [ -n "$INCOGG" ] && I_INCVRB=`prefix_I "$INCOGG"`
    if test_compile "$LIBOGG $I_INCOGG" ogg ogg nofatal; then
      if test_execute; then
        cnf_append "SDK_VBoxLibOgg_INCS" "$INCOGG"
        cnf_append "SDK_VBoxLibOgg_LIBS" "`strip_l "$LIBOGG"`"
      fi
    else
      echo "not found -- building libogg from in-tree code."
    fi
  fi
}


#
# Check whether static libstdc++ is installed. This library is required
# for the Linux guest additions.
#
check_staticlibstdcxx()
{
  test_header "static stc++ library"
  libstdcxx=`$CXX -print-file-name=libstdc++.a`
  cat > $ODIR.tmp_src.cc << EOF
#include <string>

extern "C" int main(void)
{
  std::string s = "test";
  return 0;
}
EOF
  if test_compile "$libstdcxx" libstdc++ libstdc++; then
    log_success "found"
  fi
}


#
# Check for Linux sources
#
check_linux()
{
  test_header "Linux kernel sources"
  cat > $ODIR.tmp_src.c << EOF
#include <linux/version.h>
int printf(const char *format, ...);
int main(void)
{
  printf("found version %d.%d.%d",  LINUX_VERSION_CODE / 65536,
                                   (LINUX_VERSION_CODE % 65536) / 256,
                                    LINUX_VERSION_CODE          % 256);
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,0)
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 2.4.0 or higher\n");
  return 1;
#endif
}
EOF
  echo "compiling the following source file:" >> $LOG
  cat $ODIR.tmp_src.c >> $LOG
  echo "using the following command line:" >> $LOG
  echo "$CC -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.c -nostdinc -I$LINUX/include " \
      "-I$LINUX/include/generated/uapi" >> $LOG
  $CC -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.c -nostdinc -I$LINUX/include \
      -I$LINUX/include/generated/uapi >> $LOG 2>&1
  if [ $? -ne 0 ]; then
    echo
    echo "  Linux kernel headers not found at $LINUX"
    echo "  Check the file $LOG for detailed error information."
    fail
  else
    if test_execute; then
      cnf_append "VBOX_LINUX_SRC" "`cd $LINUX ; pwd`"
    fi
  fi
}

#
# Check for kchmviewer, needed to display the online help
# (unused as we ship kchmviewer)
#
check_kchmviewer()
{
  test_header kchmviewer
  if check_avail "$KCHMVIEWER" KCHMVIEWER; then
    kchmviewer_ver=`$KCHMVIEWER --version|grep "^KchmViewer:"|sed 's+^KchmViewer: \(.*\)+\1+'`
    if [ $? -ne 0 ]; then
      log_failure "kchmviewer not working"
      fail
    else
      log_success "found version $kchmviewer_ver"
    fi
  fi
}


#
# Check for the kBuild tools, we don't support GNU make
#
check_kbuild()
{
  test_header kBuild
  if which_wrapper "$KBUILDDIR/bin/$OS.$BUILD_MACHINE/kmk" > /dev/null; then
    KBUILDDIR_BIN="$KBUILDDIR/bin/$OS.$BUILD_MACHINE"

    echo "KBUILD_PATH=\"`cd $KBUILDDIR ; pwd`\"" >> $ENV
    echo "KBUILD_DEVTOOLS=\"$DEVDIR\"" >> $ENV
    echo 'path_kbuild_bin="$KBUILD_PATH/bin/$BUILD_TARGET.$BUILD_PLATFORM_ARCH"' >> $ENV
    echo 'path_tools_bin="$KBUILD_DEVTOOLS/$BUILD_TARGET.$BUILD_PLATFORM_ARCH/bin"' >> $ENV

    if [ "$OS" = "solaris" ]; then
      # Because of sh being non-default shell in Solaris we need to export PATH again when
      # sourcing env.sh. Simply exporting from ./configure does not export PATH correctly.
      echo "PATH=\"$ORGPATH\"" >> $ENV
      echo "echo \"\$PATH\" | /usr/sfw/bin/ggrep -q \"\$path_kbuild_bin\" || PATH=\"\$path_kbuild_bin:\$PATH\"" >> $ENV
      echo "echo \"\$PATH\" | /usr/sfw/bin/ggrep -q \"\$path_tools_bin\"  || PATH=\"\$path_tools_bin:\$PATH\"" >> $ENV
    else
      echo "echo \"\$PATH\" | grep -q \"\$path_kbuild_bin\" || PATH=\"\$path_kbuild_bin:\$PATH\"" >> $ENV
      echo "echo \"\$PATH\" | grep -q \"\$path_tools_bin\"  || PATH=\"\$path_tools_bin:\$PATH\"" >> $ENV
    fi
    echo "export KBUILD_PATH KBUILD_DEVTOOLS PATH" >> $ENV
    echo "unset path_kbuild_bin path_tools_bin" >> $ENV
    KBUILD_SED="$KBUILDDIR_BIN/kmk_sed"

    echo '' >> $ENV
    echo "# Legacy - do not use:" >> $ENV
    echo 'PATH_KBUILD=${KBUILD_PATH}' >> $ENV
    echo 'PATH_DEVTOOLS=${KBUILD_DEVTOOLS}' >> $ENV
    echo 'export PATH_KBUILD PATH_DEVTOOLS' >> $ENV
    echo '' >> $ENV
  elif check_avail "kmk" KBUILDDIR really; then
    # check for installed kBuild
    KBUILD_SED="`which_wrapper kmk_sed`"
  else
    fail
  fi
  log_success "found"
}


#
# Check for compiler.h
# Some Linux distributions include "compiler.h" in their libc linux
# headers package, some don't.  Most don't need it, building might (!)
# not succeed on openSUSE without it.
#
# See http://www.mail-archive.com/qemu-devel%40nongnu.org/msg07980.html
#
check_compiler_h()
{
  test_header compiler.h
  if test ! -f "/usr/include/linux/compiler.h"; then
    log_success "compiler.h not found"
  else
    cnf_append "VBOX_WITH_LINUX_COMPILER_H" "1"
    log_success "compiler.h found"
  fi
}

#
# Check for libcap.
# Required to pass CAP_NET_RAW to our binaries to allow to open SOCK_RAW
# sockets for doing ICMP requests.
#
check_libcap()
{
  test_header "libcap library"
  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <sys/types.h>
#include <linux/types.h>
#include <sys/capability.h>

extern "C" int main(void)
{
  char buf[1024];
  cap_t caps = cap_get_proc();
  snprintf(buf, sizeof(buf), "Current caps are '%s'\n", cap_to_text(caps, NULL));
  return 0;
}
EOF
  if test_compile $LIBCAP libcap libcap; then
    if test_execute; then
      log_success "found"
    fi
  fi
}

#
# Check if we are able to build 32-bit applications (needed for the guest additions)
#
check_32bit()
{
  test_header "32-bit support"
  cat > $ODIR.tmp_src.c << EOF
#include <stdint.h>
int main(void)
{
  return 0;
}
EOF
  echo "compiling the following source file:" >> $LOG
  cat $ODIR.tmp_src.c >> $LOG
  echo "using the following command line:" >> $LOG
  echo "$CC -m32 -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.c" >> $LOG
  $CC -m32 -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.c >> $LOG 2>&1
  if [ $? -ne 0 ]; then
    echo
    echo "  Cannot compile 32-bit applications (missing headers and/or libraries)!"
    echo "  Check the file $LOG for detailed error information."
    fail
  else
    echo "executing the binary" >> $LOG
    $ODIR.tmp_out 2> $ODIR.test_execute.log
    rc=$?
    cat $ODIR.test_execute.log >> $LOG
    if [ $rc -ne 0 ]; then
      echo
      echo "  Cannot execute 32-bit applications! Either enable 32-bit support in the"
      echo "  kernel configuration or use --disable-vmmraw to disable 32-bit guests."
      fail
      return 1
    fi
  fi
  log_success ""
}


#
# Check for Python
#
check_python()
{
  test_header "Python support"

  # On darwin this is a on/off decision only
  if [ "$OS" = "darwin" ]; then
    echo "enabled"
    cnf_append "VBOX_WITH_PYTHON"     "1"
    return
  fi

  cat > $ODIR.tmp_src.cc << EOF
#include <cstdio>
#include <Python.h>
extern "C" int main(void)
{
  Py_Initialize();
  printf("found version %s", PY_VERSION);
#if PY_VERSION_HEX >= 0x02060000
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 2.6 or higher\n");
  return 1;
#endif
}
EOF
  found=
  SUPPYTHONLIBS="python2.7 python2.6 python3.1 python3.2 python3.3 python3.4 python3.4m python3.5 python3.5m python3.6 python3.6m python3.7 python3.7m python3.8 python3.9 python3.10 python3.11 python3.12"
  for p in $PYTHONDIR; do
    for d in $SUPPYTHONLIBS; do
      for b in lib/x86_64-linux-gnu lib/i386-linux-gnu lib64 lib/64 lib; do
        echo "compiling the following source file:" >> $LOG
        cat $ODIR.tmp_src.cc >> $LOG
        echo "using the following command line:" >> $LOG
        echo "$CXX -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.cc -I$p/include/$d $p/$b/lib$d.so" >> $LOG
        $CXX -O -Wall -o $ODIR.tmp_out $ODIR.tmp_src.cc -I$p/include/$d $p/$b/lib$d.so >> $LOG 2>&1
        if [ $? -eq 0 ]; then
          found=1
          break
        fi
      done
      if [ -n "$found" ]; then break; fi
    done
    if [ -n "$found" ]; then break; fi
  done
  if [ -n "$found" ]; then
    if test_execute; then
      cnf_append "VBOX_WITH_PYTHON"     "1"
      cnf_append "VBOX_PATH_PYTHON_INC" "$p/include/$d"
      cnf_append "VBOX_LIB_PYTHON"      "$p/$b/lib$d.so"
    else
      log_failure "Python not working"
      fail
    fi
  else
    log_failure "Python not found"
    fail
  fi
}


#
# Check for Java
#
check_java()
{
  test_header "Java support"
  log_success
}


#
# Setup wine
#
setup_wine()
{
  test_header "Wine support"
  if ! which_wrapper wine > /dev/null; then
    echo "  wine binary not found"
    fail
  fi
  if ! which_wrapper wine > /dev/null; then
    echo "  wine not found"
    fail
  fi
  wine_version="`wine --version`"
  case "`expr "$wine_version" : 'wine-\([0-9.]*\)' '>' 1.1.43`" in
    "0")
      if ! which_wrapper wineprefixcreate > /dev/null; then
        echo "  wineprefixcreate not found"
        fail
      fi
    ;;
    *) eval "wineprefixcreate() { true ; }" ;; # now created automatically
  esac
  export WINEPREFIX="${ODIR}wine.$BUILD_MACHINE"
  echo "WINEPREFIX=\"${ODIR}wine.$BUILD_MACHINE\"" >> $ENV
  echo "export WINEPREFIX" >> $ENV
  rm -rf $WINEPREFIX
  mkdir -p $WINEPREFIX
  touch $WINEPREFIX/.no_prelaunch_window_flag
  if ! wineprefixcreate -q > /dev/null 2>&1; then
    echo "  wineprefixcreate failed"
    fail
  fi
  tmp=.tmp.wine.reg
  rm -f $tmp
  echo 'REGEDIT4' > $tmp
  echo '' >> $tmp
  echo '[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment]' >> $tmp
  echo "\"PATH\"=\"c:\\\\\\\\windows\\\\\\\\system32;c:\\\\\\\\windows;z:$DEVDIR/win.x86/vcc/v8/bin/Microsoft.VC80.CRT;z:$DEVDIR/win.x86/HTML_Help_Workshop/v1.3\"" >> $tmp
  echo '' >> $tmp
  echo '[HKEY_CURRENT_USER\Software\Wine\AppDefaults\hhc.exe\DllOverrides]' >> $tmp
  echo '"itss"="native"' >> $tmp
  echo '' >> $tmp
  echo '[HKEY_CURRENT_USER\Software\Wine\AppDefaults\hhw.exe\DllOverrides]' >> $tmp
  echo '"itss"="native"' >> $tmp
  echo '' >> $tmp
  if ! wine regedit $tmp > /dev/null 2>&1; then
    rm -f $tmp
    echo "  failed to load registry changes (path)."
    fail
  fi
  rm -f $tmp
  log_success "found"
}


#
# Check for gSOAP.
#
check_gsoap()
{
  test_header "GSOAP compiler"
  if [ -z "$GSOAP" -a -z "$GSOAP_IMPORT" ]; then
    if which_wrapper pkg-config > /dev/null; then
      GSOAP_CXX_LIBS=`pkg-config gsoapssl++ --libs 2>> $LOG`
      if [ $? -eq 0 ]; then
        GSOAP=`pkg-config gsoapssl++ --variable=exec_prefix`
        GSOAP_IMPORT="$GSOAP/share/gsoap/import"
        if [ ! -d "$GSOAP_IMPORT"  -a  -d "$GSOAP/include/gsoap" ]; then
          GSOAP_IMPORT="$GSOAP/include/gsoap"
        fi
        cnf_append "VBOX_GSOAP_INSTALLED"   "1"
        cnf_append "VBOX_PATH_GSOAP"        "$GSOAP"
        cnf_append "VBOX_PATH_GSOAP_IMPORT" "$GSOAP_IMPORT"
        if [ -f "$GSOAP/share/gsoap/stdsoap2.cpp" ]; then
          cnf_append "VBOX_GSOAP_CXX_SOURCES" "$GSOAP/share/gsoap/stdsoap2.cpp"
        else
          cnf_append "VBOX_GSOAP_CXX_SOURCES" ""
        fi
        cnf_append "VBOX_GSOAP_CXX_LIBS"    "`strip_l "$GSOAP_CXX_LIBS"`"
        gsoap_version=`pkg-config gsoapssl++ --modversion`
        log_success "found version $gsoap_version"
        return
      fi
    fi
    if [ -d "$DEVDIR/common/gsoap" ]; then
      GSOAP_DIR=`ls -d1 "$DEVDIR"/common/gsoap/v* 2>/dev/null | tail -1`
      if [ -n "$GSOAP_DIR" -a -d "$GSOAP_DIR" ]; then
        gsoap_version=`echo "$GSOAP_DIR" | sed -ne 's/^.*\/v\([1-9][0-9.]*\).*$/\1/p'`
        log_success "found gSOAP tool version $gsoap_version"
        # No need to configure anything, the build system knows what to do.
        return
      fi
    fi
  fi
  if [ -z "$GSOAP" ]; then
    GSOAP="/usr"
  fi
  if which_wrapper "$GSOAP/bin/soapcpp2" > /dev/null; then
    if which_wrapper "$GSOAP/bin/wsdl2h" > /dev/null; then
      if [ -f "$GSOAP/include/stdsoap2.h" ]; then
        # TODO: Check for libgsoap++.a/so

        if [ -z "$GSOAP_IMPORT" ]; then
          GSOAP_IMPORT="$GSOAP/share/gsoap/import"
          if [ ! -d "$GSOAP_IMPORT"  -a  -d "$GSOAP/include/gsoap" ]; then
            GSOAP_IMPORT="$GSOAP/include/gsoap"
          fi
        fi
        if [ -f "$GSOAP_IMPORT/stlvector.h" ]; then
          cnf_append "VBOX_GSOAP_INSTALLED"   "1"
          cnf_append "VBOX_PATH_GSOAP"        "$GSOAP"
          cnf_append "VBOX_PATH_GSOAP_IMPORT" "$GSOAP_IMPORT"
          if [ -f "$GSOAP/share/gsoap/stdsoap2.cpp" ]; then
            cnf_append "VBOX_GSOAP_CXX_SOURCES" "$GSOAP/share/gsoap/stdsoap2.cpp"
          else
            cnf_append "VBOX_GSOAP_CXX_SOURCES" ""
          fi
          cnf_append "VBOX_GSOAP_CXX_LIBS"    "libgsoapssl++"
          log_success "found"
        else
          log_failure "stlvector.h not found -- disabling webservice"
          cnf_append "VBOX_WITH_WEBSERVICES" ""
        fi
      else
        log_failure "stdsoap2.h not found -- disabling webservice"
        cnf_append "VBOX_WITH_WEBSERVICES" ""
      fi
    else
      log_failure "wsdl2h not found -- disabling webservice"
      cnf_append "VBOX_WITH_WEBSERVICES" ""
    fi
  else
    log_failure "soapcpp2 not found -- disabling webservice"
    cnf_append "VBOX_WITH_WEBSERVICES" ""
  fi
}


#
# Determines the Darwin version.
#
check_darwinversion()
{
  test_header "Darwin version"
  darwin_ver=`uname -r`
  case "$darwin_ver" in
    24\.*)
      darwin_ver="15.0" # Sequoia
      ;;
    23\.*)
      darwin_ver="14.0" # Sonoma
      ;;
    22\.*)
      darwin_ver="13.0" # Ventura
      ;;
    21\.*)
      darwin_ver="12.0" # Monterey
      ;;
    20\.*)
      darwin_ver="11.0" # Big Sur
      ;;
    19\.*)
      darwin_ver="10.15" # Catalina
      ;;
    18\.*)
      darwin_ver="10.14" # Mojave
      ;;
    17\.*)
      darwin_ver="10.13" # High Sierra
      ;;
    16\.*)
      darwin_ver="10.12" # Sierra
      ;;
    15\.*)
      darwin_ver="10.11" # El Capitan
      ;;
    14\.*)
      darwin_ver="10.10" # Yosemite
      ;;
    13\.*)
      darwin_ver="10.9" # Mavericks
      ;;
    *)
      echo "  failed to determine Darwin version. (uname -r: $darwin_ver)"
      fail
      darwin_ver="unknown"
      ;;
  esac

  log_success "found version $darwin_ver"
}

#
# Check Xcode path
#
check_xcode_path()
{
    # Check if WITH_XCODE_DIR is set.
    if [ -z "$WITH_XCODE_DIR" ]; then
        if [ -d "/Library/Developer/CommandLineTools" -a -f "/Library/Developer/CommandLineTools/usr/bin/clang" ]; then
            return 1
        else
            echo "Please specify --with-xcode-dir option."
            return 0
        fi
    fi

    # Check if specified path exists and is a directory containing Xcode.
    if [ -d "$1" -a -f "$1/Contents/Developer/usr/bin/xcodebuild" ]; then
        return 1
    else
        echo "Xcode path [$1] not found."
        return 0
    fi
}

check_xcode()
{
  test_header "Xcode and SDK"
  check_xcode_path "$WITH_XCODE_DIR"
  [ $? -eq 1 ] || fail

  # Pick the oldest SDK offered by Xcode, to get maximum compatibility
  if [ -z "$WITH_XCODE_DIR" ]; then
    devel_subdir="/Library/Developer/CommandLineTools"
    sdk_subdir="$devel_subdir/SDKs"
  else
    devel_subdir="$WITH_XCODE_DIR/Contents/Developer"
    sdk_subdir="$devel_subdir/Platforms/MacOSX.platform/Developer/SDKs"
  fi
  sdk_tries="$sdk_subdir"/MacOSX10.?.sdk" $sdk_subdir"/MacOSX10.??.sdk" $sdk_subdir"/MacOSX.sdk
  for t in $sdk_tries; do
    if [ -f "$t/SDKSettings.plist" ]; then
      sdk="$t"
      sdk_ver=`defaults read "$t/SDKSettings.plist" Version`
      break
    fi
  done
  if [ -z "$sdk" ]; then
    echo "  failed to determine SDK directory. ($sdk_subdir/MacOSX*.sdk/SDKSettings.plist should exist)"
    fail
  fi
  xcode_ver=`$devel_subdir/usr/bin/clang --version | sed -n 's/^.*version \([0-9]\{1,\}\.[0-9]\{1,\}\.[0-9]\{1,\}\).*$/\1/p'`
  if [ $? -ne 0 -o -z "$xcode_ver" ]; then
    echo "  failed to determine Xcode version."
    fail
  fi

  if [ -z "$WITH_XCODE_DIR" ]; then
    cnf_append "VBOX_WITH_EVEN_NEWER_XCODE" "1"
  else
    cnf_append "VBOX_WITH_MACOSX_COMPILERS_FROM_DEVEL" "1"
    cnf_append "PATH_TOOL_VBoxXcode62" "$devel_subdir"
    cnf_append "VBOX_PATH_MACOSX_DEVEL_ROOT" "$devel_subdir"
  fi
  cnf_append "VBOX_PATH_MACOSX_SDK" "$sdk"
  if [ -n "$sdk_ver" ]; then
    cnf_append "VBOX_DEF_MACOSX_VERSION_MIN" "$sdk_ver"
    cnf_append "VBOX_WITHOUT_VBOXPYTHON_FOR_OSX_10_6" "1"
  fi

  log_success "found version $xcode_ver (SDK: $sdk)"
}


check_makeself()
{
  test_header "makeself"
  if check_avail "$MAKESELF" makeself; then
    makeself_ver=`$MAKESELF --version|grep version|sed 's+^Makeself.*version \([0-9\.]*\).*+\1+'`
    if [ $? -ne 0 ]; then
      log_failure "makeself not working"
      fail
    else
      log_success "found version $makeself_ver"
      cnf_append "VBOX_MAKESELF" "`which_wrapper $MAKESELF`"
    fi
  fi
}


#
# Show help
#
show_help()
{
cat << EOF
Usage: ./configure [OPTIONS]...

Configuration:
  -h, --help               display this help and exit
  --nofatal                don't abort on errors
EOF
[ $WITH_XPCOM   -eq 1 ] && echo "  --disable-xpcom          disable XPCOM and related stuff"
[ $WITH_PYTHON  -eq 1 ] && echo "  --disable-python         disable python bindings"
[ $WITH_JAVA    -eq 1 ] && echo "  --disable-java           disable java bindings"
[ $WITH_VMMRAW  -eq 1 ] && echo "  --disable-vmmraw         disable VMM raw mode (VT-x/AMD-V mandatory!)"
[ $WITH_SDL_TTF -eq 1 ] && echo "  --disable-sdl-ttf        disable SDL_ttf detection"
[ $WITH_QT6     -eq 1 ] && echo "  --disable-qt             disable Qt detection"
[ $WITH_ALSA    -eq 1 ] && echo "  --disable-alsa           disable the ALSA sound backend"
[ $WITH_PULSE   -eq 1 ] && echo "  --disable-pulse          disable the PulseAudio backend"
[ $WITH_DBUS    -eq 1 ] && echo "  --disable-dbus           don't use DBus and hal for hardware detection"
[ $WITH_KMODS   -eq 1 ] && echo "  --disable-kmods          don't build Linux kernel modules (host and guest)"
[ $WITH_OPENGL  -eq 1 ] && echo "  --disable-opengl         disable OpenGL support (2D & 3D)"
[ $WITH_QT6     -eq 0 ] && echo "  --enable-qt6             enable Qt6 detection"
[ $OSE          -eq 1 ] && echo "  --enable-vnc             enable the VNC server"
[ $OSE          -eq 0 ] && echo "  --disable-extpack        don't build the extpack"
[ $WITH_DOCS    -eq 1 ] && echo "  --disable-docs           don't build the documentation"
[ $WITH_LIBVPX  -eq 1 ] && echo "  --disable-libvpx         don't use libvpx for video capturing"
[ $WITH_LIBVORBIS -eq 0 ] && echo "  --enable-libvorbis       enable system libvorbis"
[ $WITH_LIBOGG -eq 0 ]  && echo "  --enable-libogg          enable system libogg"
[ $WITH_LIBTPMS -eq 1 ] && echo "  --disable-libtpms        don't use libtpms for TPM emulation"
[ $WITH_LIBLZMA -eq 1 ] && echo "  --disable-liblzma        don't use liblzma"
[ "$OS" = "linux" -o "$OS" = "freebsd" ] && echo "  --enable-vde             enable VDE networking"
cat << EOF
  --disable-udptunnel      disable UDP tunnel networking
  --disable-devmapper      disable device mapper library access
  --disable-hardening      don't be strict about /dev/vboxdrv access
  --build-libxml2          build libxml2 from sources
  --build-libssl           build openssl from sources
  --build-libtpms          build libtpms from sources
  --build-liblzma          build liblzma from sources
EOF
[ $OSE -eq 0 ] && cat << EOF
  --build-libcurl          build libcurl from sources
  --build-libvpx           build libvpx from sources
EOF
[ "$OS"   != "darwin" ] && echo "  --setup-wine             setup a Wine directory and register the hhc hack"
cat << EOF
  --only-additions         only build the Guest Additions

Paths:
  --with-gcc=PATH          location of the gcc compiler [$CC]
  --with-g++=PATH          location of the g++ compiler [$CXX]
  --with-kbuild=DIR        kbuild directory [$KBUILDDIR]
  --with-iasl=PATH         location of the iasl compiler [$IASL]
  --with-yasm=PATH         location of the iasl compiler [$YASM]
  --with-makeself=PATH     location of makeself [$MAKESELF]
EOF
[ "$OS"   = "darwin" ] && echo "  --with-xcode-dir=DIR     custom path to Xcode root directory; it is assumed that Xcode"
[ "$OS"   = "darwin" ] && echo "                           contains OS X 10.6 SDK (required for Mountain Lion and newer hosts"
[ "$OS"   = "darwin" ] && echo "                           only, ignored for the rest)"
[ "$OS"    = "linux" ] && echo "  --with-linux=DIR         Linux kernel source directory [$LINUX]"
[ $WITH_QT6    -eq 1 ] && echo "  --with-qt-dir=DIR        directory for Qt headers/libraries [pkgconfig]"
cat << EOF
  --with-gsoap-dir=PATH    directory for gSOAP compiler/headers/libraries
                           (soapcpp2 and wsdl2h, soapstd2.h, libgsoap++.a/so)
  --with-gsoap-import=PATH directory for gSOAP import files (stlvector.h)
  --with-openssl-dir=DIR   directory for OpenSSL headers/libraries
  --with-ow-dir=DIR        directory where Open Watcom can be found [$WATCOM]
  --out-base-dir=DIR       directory where configuration and build output
                           should go, in subdirectory out

Build type:
  -d, --build-debug        build with debugging symbols and assertions
  --build-profile          build with profiling support
  --build-headless         build headless (without any GUI frontend)
EOF
  exit 0
}


#
# The body.
#

# test if we are OSE
if [ $OSE -eq 1 -a -r "`cd \`dirname $0\`; pwd`/src/VBox/RDP/server/server.cpp" ]; then
  OSE=0
  # Set this as a reminder to print a log message once we know the path of the
  # log file
  NOT_OSE=1
fi

# Change OS specific defaults; must be before all other stuff
if [ "$OS" = "darwin" ]; then
  WITH_SDL=0
  WITH_SDL_TTF=0
  WITH_X11=0
  WITH_ALSA=0
  WITH_PULSE=0
  WITH_DBUS=0
  WITH_KMODS=0
  BUILD_LIBXML2=1
  BUILD_LIBSSL=1
  BUILD_LIBVPX=1
  [ $OSE -eq 1 ] || BUILD_LIBCURL=1
  [ $OSE -eq 1 ] && WITH_LIBVPX=0
  [ $OSE -eq 1 ] && WITH_LIBOGG=0
  [ $OSE -eq 1 ] && WITH_LIBVORBIS=0
  WITH_XCODE_DIR=""
elif [ "$OS" = "haiku" ]; then
  #WITH_SDL=0
  WITH_SDL_TTF=0
  WITH_X11=0
  WITH_ALSA=0
  WITH_PULSE=0
  WITH_DBUS=0
  WITH_KMODS=0
  WITH_XPCOM=0
  BUILD_LIBXSLT=1
  BUILD_LIBXML2=1
  WITH_LIBVPX=0
  WITH_LIBOGG=0
  WITH_LIBVORBIS=0
  # but the script wants something
  LIBPTHREAD="-lroot"
  #[ $OSE -eq 1 ] || BUILD_LIBCURL=1
  [ $OSE -eq 1 ] || BUILD_LIBSSL=1
elif [ "$OS" = "solaris" ]; then
  [ $OSE -eq 1 ] && WITH_LIBVPX=0
  [ $OSE -eq 1 ] && WITH_LIBOGG=0
  [ $OSE -eq 1 ] && WITH_LIBVORBIS=0
fi

# scan command line options
for option in "$@"; do
  case "$option" in
    --help|-help|-h)
      show_help
      ;;
    --nofatal)
      nofatal=1
      ;;
    --env-only)
      ENV_ONLY=1
      ;;
    --with-gcc=*)
      CC=`echo $option | cut -d'=' -f2`
      ;;
    --with-g++=*)
      CXX=`echo $option | cut -d'=' -f2`
      ;;
    --with-kbuild=*)
      KBUILDDIR=`echo $option | cut -d'=' -f2`
      if echo $KBUILDDIR|grep -q "$INVALID_CHARS"; then
        echo "Error: KBUILDDIR contains invalid characters!"
        exit 1
      fi
      ;;
    --with-qt-dir=*)
      [ $WITH_QT6 -eq 1 ] && QT6DIR=`echo $option | cut -d'=' -f2`
      [ $WITH_QT6 -eq 1 ] && QT6DIR_PKGCONFIG=0
      ;;
    --with-qt6-minor=*)
      QT6MIN=`echo $option | cut -d'=' -f2`
      ;;
    --with-qt6-major=*)
      QT6MAJ=`echo $option | cut -d'=' -f2`
      ;;
    --with-openssl-dir=*)
      OPENSSLDIR=`echo $option | cut -d'=' -f2`
      INCCRYPTO="-I${OPENSSLDIR}/include"
      LIBCRYPTO="${OPENSSLDIR}/lib/libssl.a ${OPENSSLDIR}/lib/libcrypto.a"
      # On Darwin (at least for macports) static OpenSSL also needs zlib.
      [ "$OS" = "darwin" ] && LIBCRYPTO="$LIBCRYPTO ${OPENSSLDIR}/lib/libz.a"
      # On Linux static OpenSSL typically needs a few additional libraries.
      [ "$OS" = "linux" ] && LIBCRYPTO="-ldl $LIBPTHREAD -lm"
      ;;
    --with-ow-dir=*)
      WATCOM=`echo $option | cut -d'=' -f2`
      ;;
    --with-gsoap-dir=*)
      GSOAP=`echo $option | cut -d'=' -f2`
      ;;
    --with-gsoap-import=*)
      GSOAP_IMPORT=`echo $option | cut -d'=' -f2`
      ;;
    --with-iasl=*)
      IASL=`echo $option | cut -d'=' -f2`
      ;;
    --with-yasm=*)
      YASM=`echo $option | cut -d'=' -f2`
      ;;
    --with-xcode-dir=*)
      WITH_XCODE_DIR=`echo $option | cut -d'=' -f2`
      ;;
    --with-linux=*)
      LINUX=`echo $option | cut -d'=' -f2`
      ;;
    --with-makeself=*)
      MAKESELF=`echo $option | cut -d'=' -f2`
      ;;
    --target-arch=*)
      TARGET_MACHINE=`echo $option | cut -d'=' -f2`
      ;;
    --disable-xpcom)
      [ $WITH_XPCOM -eq 1 ] && WITH_XPCOM=0
      ;;
    --disable-python)
      [ $WITH_PYTHON -eq 1 ] && WITH_PYTHON=0
      ;;
    --disable-java)
      [ $WITH_JAVA -eq 1 ] && WITH_JAVA=0
      ;;
    --disable-vmmraw)
      [ $WITH_VMMRAW -eq 1 ] && WITH_VMMRAW=0
      ;;
    --disable-sdl-ttf)
      [ $WITH_SDL_TTF -eq 1 ] && WITH_SDL_TTF=0
      ;;
    --disable-qt)
      [ $WITH_QT6 -eq 1 ] && WITH_QT6=0
      ;;
    --enable-qt6)
      [ $WITH_QT6 -eq 0 ] && WITH_QT6=1
      ;;
    --passive-mesa)
      PASSIVE_MESA=1
      ;;
    --disable-alsa)
      [ $WITH_ALSA -eq 1 ] && WITH_ALSA=0
      ;;
    --disable-pulse)
      [ $WITH_PULSE -eq 1 ] && WITH_PULSE=0
      ;;
    --enable-pulse)
      WITH_PULSE=2
      ;;
    --disable-dbus)
      [ $WITH_DBUS -eq 1 ] && WITH_DBUS=0
      ;;
    --disable-kmods)
      [ $WITH_KMODS -eq 1 ] && WITH_KMODS=0
      ;;
    --disable-opengl)
      [ $WITH_OPENGL -eq 1 ] && WITH_OPENGL=0
      ;;
    --enable-webservice)
      ;;
    --enable-vnc)
      WITH_VNC=1
      ;;
    --disable-hardening)
      WITH_HARDENING=0
      ;;
    --disable-extpack)
      WITH_EXTPACK=0
      ;;
    --disable-docs)
      WITH_DOCS=0
      ;;
    --enable-hardening)
      WITH_HARDENING=2
      ;;
    --disable-udptunnel)
      WITH_UDPTUNNEL=0
      ;;
    --enable-vde)
      WITH_VDE=1
      ;;
    --disable-devmapper)
      WITH_DEVMAPPER=0
      ;;
    --disable-libvpx)
      WITH_LIBVPX=0
      ;;
    --disable-libtpms)
      WITH_LIBTPMS=0
      ;;
    --disable-liblzma)
      WITH_LIBLZMA=0
      ;;
    --enable-libogg)
      WITH_LIBOGG=1
      ;;
    --enable-libvorbis)
      WITH_LIBVORBIS=1
      ;;
    --disable-sdl)
      WITH_SDL=0
      ;;
    --build-debug|-d)
      BUILD_TYPE=debug
      ;;
    --build-profile)
      BUILD_TYPE=profile
      ;;
    --build-libxml2)
      BUILD_LIBXML2=1
      ;;
    --build-libssl)
      BUILD_LIBSSL=1
      ;;
    --build-libcurl)
      BUILD_LIBCURL=1
      ;;
    --build-libvpx)
      BUILD_LIBVPX=1
      ;;
    --build-libtpms)
      BUILD_LIBTPMS=1
      ;;
    --build-liblzma)
      BUILD_LIBLZMA=1
      ;;
    --build-headless)
      HEADLESS=1
      WITH_SDL=0
      WITH_SDL_TTF=0
      WITH_X11=0
      WITH_OPENGL=0
      WITH_QT6=0
      ;;
    --ose)
      OSE=2
      ;;
    --odir=*)
      ODIR="`echo $option | cut -d'=' -f2`/"
      ODIR_OVERRIDE=1
      ;;
    --out-base-dir=*)
      out_base_dir="`echo $option | cut -d'=' -f2`/"
      if [ -d $out_base_dir ]; then
        saved_pwd="$PWD"
        cd $out_base_dir
        OUT_BASE_PATH="`pwd`"
        cd $saved_pwd
        OUT_BASE_PATH_OVERRIDE=1
        if [ $ODIR_OVERRIDE -eq 0 ]; then
          # This variable has not *yet* been overridden.  That can still happen.
          ODIR=$OUT_BASE_PATH/
          ODIR_OVERRIDE=1
        fi
      else
        echo "Error: invalid folder \"$out_base_dir\" in option \"$option\""
        exit 1
      fi
      ;;
    --setup-wine)
      [ "$OS" != "darwin" ] && SETUP_WINE=1
      ;;
    --only-additions)
      ONLY_ADDITIONS=1
      ;;
    *)
      echo
      echo "Unrecognized option \"$option\""
      echo
      show_help
      ;;
  esac
done

LOG="$ODIR$LOG"
ENV="$ODIR$ENV"
CNF="$ODIR$CNF"

# initialize output files
cat > $LOG << EOF
# Log file generated by
#
#   '$0 $*'
#

EOF
cat > $CNF << EOF
# -*- Makefile -*-
#
# automatically generated by
#
#   '$0 $*'
#
# It will be completely overwritten if configure is executed again.
#

EOF
cat > $ENV << EOF
#!/bin/bash
#
# automatically generated by
#
#   '$0 $*'
#
# It will be completely overwritten if configure is executed again.
# Make sure you source this file once before you start to build VBox.
#

EOF

# Print log warning about OSE if necessary
if [ -n "$NOT_OSE" ]; then
  echo "Found RDP server, assuming VBOX_OSE = FALSE" >> $LOG
  echo >> $LOG
fi


if [ "$BUILD_TYPE" = "debug" ]; then
  echo "Creating DEBUG build!" >> $LOG
elif [ "$BUILD_TYPE" = "profile" ]; then
  echo "Creating PROFILE build!" >> $LOG
fi

# first determine our environment
check_environment
check_kbuild

[ -n "$ENV_ONLY" ] && exit 0

# append the tools directory to the default search path
echo "$PATH" | grep -q "$DEVDIR_BIN" || PATH="$PATH:$DEVDIR_BIN"
export PATH

# if we will be writing to a different out directory then set this up now
if [ $ODIR_OVERRIDE -eq 1 ]; then
  echo "AUTOCFG=$CNF" >> $ENV
  echo "export AUTOCFG" >> $ENV
fi
if [ $OUT_BASE_PATH_OVERRIDE -eq 1 ]; then
  echo "PATH_OUT_BASE=$OUT_BASE_PATH" >> $ENV
  echo "export PATH_OUT_BASE" >> $ENV
fi

# don't bother people with -Werror
cnf_append "VBOX_GCC_WERR" "\$(NO_SUCH_VARIABLE)"

# some things are not available in for OSE
if [ $OSE -ge 1 ]; then
  cnf_append "VBOX_OSE" "1"
  cnf_append "VBOX_WITH_VALIDATIONKIT" ""
  cnf_append "VBOX_WITH_WIN32_ADDITIONS" ""

  if [ "$OS" = "linux" ]; then
    cnf_append "VBOX_WITH_LINUX_ADDITIONS" "1"
  else
    cnf_append "VBOX_WITH_LINUX_ADDITIONS" ""
  fi
  echo >> $CNF
fi

# extpack
if [ $ONLY_ADDITIONS -eq 1 ]; then
  cnf_append "VBOX_WITH_EXTPACK_PUEL_BUILD" ""
elif [ $OSE -eq 0 ]; then
  if [ $WITH_EXTPACK -eq 1 ]; then
    BUILD_LIBSSL=1
  else
    cnf_append "VBOX_WITH_EXTPACK_PUEL_BUILD" ""
  fi
fi

# headless
if [ -n "$HEADLESS" ]; then
  cnf_append "VBOX_HEADLESS" "1"
fi

# emit disable directives corresponding to any --disable-xxx options.
if [ $WITH_OPENGL -eq 0 ]; then
  cnf_append "VBOX_WITH_VMSVGA3D" ""
  cnf_append "VBOX_WITH_3D_ACCELERATION" ""
  cnf_append "VBOX_WITH_VIDEOHWACCEL" ""
  cnf_append "VBOX_GUI_USE_QGL" ""
fi
[ $WITH_XPCOM     -eq 0 ] && cnf_append "VBOX_WITH_MAIN" ""
[ $WITH_QT6       -eq 0 ] && cnf_append "VBOX_WITH_QTGUI" ""
[ $WITH_SDL_TTF   -eq 0 ] && cnf_append "VBOX_WITH_SECURELABEL" ""
[ $WITH_PYTHON    -eq 0 ] && cnf_append "VBOX_WITH_PYTHON" ""
[ $WITH_JAVA      -eq 0 ] && cnf_append "VBOX_WITH_JXPCOM" ""
[ $WITH_JAVA      -eq 0 ] && cnf_append "VBOX_WITH_JWS" ""
[ $WITH_HARDENING -eq 0 ] && cnf_append "VBOX_WITHOUT_HARDENING" "1"
[ $WITH_HARDENING -eq 2 ] && cnf_append "VBOX_WITH_HARDENING" "2"
[ $WITH_VMMRAW    -eq 0 ] && cnf_append "VBOX_WITH_RAW_MODE" ""
[ $WITH_LIBTPMS   -eq 0 ] && cnf_append "VBOX_WITH_LIBTPMS" ""
[ $WITH_LIBLZMA   -eq 0 ] && cnf_append "VBOX_WITH_LIBLZMA" ""
if [ $WITH_LIBVPX -eq 0 ]; then
  cnf_append "VBOX_WITH_LIBVPX" ""
  cnf_append "VBOX_WITH_RECORDING" ""
fi
if [ $WITH_LIBOGG -eq 0 -o $WITH_LIBVORBIS -eq 0 ]; then
  cnf_append "VBOX_WITH_LIBOGG" ""
  cnf_append "VBOX_WITH_LIBVORBIS" ""
  cnf_append "VBOX_WITH_AUDIO_RECORDING" ""
fi

# Darwin-specific
[ "$OS" = "darwin" ] && check_darwinversion
# the tools
[ "$OS" != "darwin"  ] && check_gcc
[ "$OS" = "darwin"  ] && check_xcode
if [ $ONLY_ADDITIONS -eq 0 ]; then
  check_open_watcom
  [ "$OS" != "darwin"  ] && check_iasl
  [ $OSE -ge 1 ] && check_yasm
  [ "$OS" != "darwin"  ] && check_xsltproc
fi

# the libraries
if [ $ONLY_ADDITIONS -eq 0 ]; then
  [ "$OS" != "darwin"  ] && check_pthread
  check_libxml2
  check_z
  check_lzf
  check_ssl
  check_curl
  [ $WITH_LIBVPX -eq 1 ] && check_vpx
  [ $WITH_LIBOGG -eq 1 ] && check_libogg
  [ $WITH_LIBVORBIS -eq 1 ] && check_libvorbis
  [ $WITH_LIBTPMS -eq 1 ] && check_libtpms
  [ $WITH_LIBLZMA -eq 1 ] && check_liblzma
  [ "$OS" != "darwin"  ] && check_png
  [ $OSE -eq 0 -a "$OS" = "linux" ] && check_pam
  if [ $WITH_SDL -eq 1 ]; then
    check_sdl
  else
    cnf_append "VBOX_WITH_VBOXSDL" ""
  fi
  [ $WITH_SDL_TTF -eq 1 -a $OSE -eq 0 ] && check_sdl_ttf
  [ $WITH_X11    -eq 1 ] && check_x
  # TODO check for xcomposite-dev (X11/extensions/Xcomposite.h, additions only)
  # TODO check for libxdamange-dev (X11/extensions/Xdamage.h, additions only)
  [ $WITH_X11    -eq 1 ] && check_xcursor
  [ $WITH_X11    -eq 1 ] && check_xinerama
  [ $WITH_X11    -eq 1 ] && check_xrandr
  [ $WITH_OPENGL -eq 1 ] && check_opengl
  [ $WITH_QT6    -eq 1 ] && check_qt6
  [ $WITH_PYTHON -eq 1 ] && check_python
  [ $WITH_JAVA   -eq 1 ] && check_java

  # PulseAudio
  if [ $WITH_PULSE -eq 1 ]; then
    check_pulse
  elif [ $WITH_PULSE -eq 0 ]; then # Force disabling PulseAudio.
    cnf_append "VBOX_WITH_AUDIO_PULSE" ""
  elif [ $WITH_PULSE -eq 2 ]; then # --enable-pulse was passed, force PulseAudio.
    cnf_append "VBOX_WITH_AUDIO_PULSE" "1"
  fi
fi

# Linux-specific
if [ "$OS" = "linux" ]; then
  # don't check for the static libstdc++ in the PUEL version as we build the
  # additions at a dedicated box
  [ $OSE -ge 1 ] && check_staticlibstdcxx
  if [ $WITH_KMODS -eq 1 ]; then
    check_linux
  else
    cnf_append "VBOX_LINUX_SRC" ""
    cnf_append "VBOX_WITHOUT_LINUX_TEST_BUILDS" "1"
  fi
  if [ $ONLY_ADDITIONS -eq 0 ]; then
    if [ $WITH_ALSA -eq 1 ]; then
      check_alsa
    else
      cnf_append "VBOX_WITH_AUDIO_ALSA" ""
    fi
    if [ $WITH_DBUS -eq 0 ]; then
      cnf_append "VBOX_WITH_DBUS" ""
    fi
    if [ $WITH_DEVMAPPER -eq 1 ]; then
      check_libdevmapper
    else
      cnf_append "VBOX_WITH_DEVMAPPER" ""
    fi
    check_libcap
  fi
  check_compiler_h
  [ $ONLY_ADDITIONS -eq 0 -a "$BUILD_MACHINE" = "amd64" -a $WITH_VMMRAW -eq 1 ] && check_32bit
  # tools/common/makeself*
  [ $OSE -ge 1 ] && check_makeself
fi

[ -n "$SETUP_WINE" ] && setup_wine

if [ $ONLY_ADDITIONS -eq 0 ]; then
  check_gsoap
else
  cnf_append "VBOX_WITH_WEBSERVICES" ""
fi

# UDPTUNNEL
if [ $ONLY_ADDITIONS -eq 0 -a $WITH_UDPTUNNEL -eq 0 ]; then
  cnf_append "VBOX_WITH_UDPTUNNEL" ""
fi

# VDE
if [ $ONLY_ADDITIONS -eq 0 -a "$OS" = "linux" -o "$OS" = "freebsd" ]; then
  if [ $WITH_VDE -eq 1 ]; then
    cnf_append "VBOX_WITH_VDE" "1"
  fi
fi

# DOCS
if [ $ONLY_ADDITIONS -eq 1 -o $WITH_DOCS -eq 0 ]; then
  cnf_append "VBOX_WITH_DOCS" ""
  cnf_append "VBOX_WITH_DOCS_PACKING" ""
fi

# VNC server support
if [ $ONLY_ADDITIONS -eq 0 -a $OSE -ge 1 ]; then
  if [ $WITH_VNC = 1 ]; then
    check_vncserver
  else
    cnf_append "VBOX_WITH_EXTPACK_VNC" ""
  fi
fi

if [ $ONLY_ADDITIONS -eq 1 ]; then
  cnf_append "VBOX_ONLY_ADDITIONS" "1"
fi

# success!
echo
echo "Successfully generated '$CNF' and '$ENV'."
echo "Source '$ENV' once before you start to build VBox:"
echo ""
echo "  source $ENV"
echo "  kmk"
echo ""
if [ "$OS" = "linux" ]; then
    if [ $OUT_BASE_PATH_OVERRIDE -eq 1 ]; then
      out_base_dir=$OUT_BASE_PATH
    else
      out_base_dir=.
    fi
    echo "To compile the kernel modules, do:"
    echo ""
    echo "  cd $out_base_dir/out/$OS.$TARGET_MACHINE/$BUILD_TYPE/bin/src"
    echo "  make"
    echo ""
fi
if [ $ONLY_ADDITIONS -eq 1 ]; then
    echo ""
    echo "  Tree configured to build only the Guest Additions"
    echo ""
elif [ $WITH_HARDENING -gt 0 ]; then
    echo ""
    echo "  +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++"
    echo "  Hardening is enabled which means that the VBox binaries will not run from"
    echo "  the binary directory. The binaries have to be installed suid root and some"
    echo "  more prerequisites have to be fulfilled which is normally done by installing"
    echo "  the final package. For development, the hardening feature can be disabled"
    echo "  by specifying the --disable-hardening parameter. Please never disable that"
    echo "  feature for the final distribution!"
    echo "  +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++"
    echo ""
else
    echo ""
    echo "  +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++"
    echo "  Hardening is disabled. Please do NOT build packages for distribution with"
    echo "  disabled hardening!"
    echo "  +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++ WARNING +++"
    echo ""
fi
echo "Enjoy!"
cleanup