root/trunk/configure

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

#
# Copyright (C) 2006-2007 Sun Microsystems, Inc.
#
# This file is part of VirtualBox Open Source Edition (OSE), as
# available from http://www.virtualbox.org. This file 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 2 as it comes in the "COPYING" file of the VirtualBox OSE
# distribution. VirtualBox OSE is distributed in the hope that it will
# be useful, but WITHOUT ANY WARRANTY of any kind.
#

LC_ALL=C
export LC_ALL

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

#
# Defaults
#
OSE=1
ODIR="`pwd`/"
SETUP_WINE=
TARGET_MACHINE=""
TARGET_CPU=""
WITH_XPCOM=1
WITH_LIBIDL=1
WITH_QT=1
WITH_QT4=1
WITH_SDL=1
WITH_SDL_TTF=1
WITH_X11=1
WITH_ALSA=1
WITH_PULSE=1
WITH_KMODS=1
CC="gcc"
CC_COMPAT=""
CC32=""
CC64=""
CXX="g++"
CXX32=""
CXX64=""
BCC="bcc"
YASM="yasm"
IASL="iasl"
AS86="as86"
XSLTPROC="xsltproc"
GENISOIMAGE="genisoimage"
MKISOFS="mkisofs"
BUILD_LIBXML2=
BUILD_LIBXSLT=
LIBCRYPTO="-lcrypto"
LIBPTHREAD="-lpthread"
LIBX11="-L/usr/X11R6/lib -L/usr/X11R6/lib64 -L/usr/local/lib -lXext -lX11"
INCX11="/usr/local/include"
LIBXCURSOR="-lXcursor"
INCZ=""
LIBZ="-lz"
INCPNG=""
LIBPNG="-lpng"
QT3DIR="/usr/qt/3 /usr/lib/qt3 /usr/lib/qt-3.3 /usr/share/qt3 /usr/lib64/qt-3.3 /usr/X11R6 /usr/lib/qt"
QT4DIR="/usr/lib/qt4 /usr/share/qt4 /usr/lib64/qt4 /usr"
QT4DIR_PKGCONFIG=1
QT4UIC3DIR="/usr/bin"
KBUILDDIR="`cd \`dirname $0\`; pwd`/kBuild"
DEVDIR="`cd \`dirname $0\`; pwd`/tools"
if [ -d "/lib/modules/`uname -r`/build" ]; then
 LINUX="/lib/modules/`uname -r`/build"
else
 LINUX="/usr/src/linux"
fi
KCHMVIEWER="kchmviewer"
LOG="configure.log"
CNF="AutoConfig.kmk"
ENV="env.sh"
BUILD_TYPE="release"
# the restricting tool is ar (mri mode).
INVALID_CHARS="[^A-Za-z0-9/\\$:._-]"

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

# darwin /bin/sh has a builtin echo that doesn't grok -n. gotta love it.
if [ "`uname`" = "Darwin" ]; then
  ECHO_N="/bin/echo -n"
else
  ECHO_N="echo -n"
fi


cleanup()
{
  rm -f .tmp_src.cc .tmp_src.c .tmp_out .test_execute.log
}

fail()
{
  if [ -z "$nofatal" -o "x$1" != "x" ]; then
    cleanup
    rm -f $ENV
    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()
{
  echo "$1"|$KBUILD_SED 's|-L\([^ ]\+\)|\1|g; s|^-[^L][^ ]*||g; s| -[^L][^ ]*||g; s|^ ||; s| *$||g'
}

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'
}

# 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
}

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
test_compile()
{
  echo "compiling the following source file:" >> $LOG
  cat .tmp_src.cc >> $LOG
  echo "using the following command line:" >> $LOG
  echo "$CXX -O -Wall -o .tmp_out .tmp_src.cc \"$1\"" >> $LOG
  $CXX -O -Wall -o .tmp_out .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 "not found."
      echo >> $LOG
      echo >> $LOG
    fi
    return 1
  fi
  return 0
}

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

#
# Check for OS, MACHINE, CPU
#
check_environment()
{
  test_header environment
  OS=`uname -s | sed -e 's/GNU\/Linux/Linux/g' | tr [:upper:] [:lower:]`
  case "$OS" in
    linux)
      ;;
    darwin)
      ;;
    freebsd)
      ;;
    sunos)
      OS='solaris'
      ;;
    *)
      log_failure "Cannot determine OS"
      exit 1
      ;;
  esac
  BUILD_CPU=`uname -m`
  [ "$OS" = "solaris" ] && BUILD_CPU=`isainfo | cut -f 1 -d ' '`
  case "$BUILD_CPU" in
    i[3456789]86|x86|i86pc)
      BUILD_MACHINE='x86'
      LIB='lib'
      ;;
    x86_64|amd64)
      BUILD_MACHINE='amd64'
      BUILD_CPU='k8'
      if [ "$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" >> $LOG
        LIB='lib/64'
      fi
      ;;
    *)
      log_failure "Cannot determine system"
      exit 1
      ;;
  esac
  [ -z "$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 "export BUILD_PLATFORM=\"$OS\"" >> $ENV
  echo "export BUILD_PLATFORM_ARCH=\"$BUILD_MACHINE\"" >> $ENV
  echo "export BUILD_TARGET=\"$OS\"" >> $ENV
  echo "export BUILD_TARGET_ARCH=\"$TARGET_MACHINE\"" >> $ENV
  echo "export BUILD_TARGET_CPU=\"$TARGET_CPU\"" >> $ENV
  echo "export BUILD_TYPE=\"$BUILD_TYPE\"" >> $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 [ -n "$CC_COMPAT" ]; then
    if check_avail "$CC_COMPAT" CC_COMPAT really; then
      cc_compat_ver=`$CC_COMPAT -dumpversion` 2>/dev/null
      if [ $? -ne 0 ]; then
        log_failure "cannot execute '$CC_COMPAT -dumpversion'"
        fail really
      fi
      cc_compat_maj=`echo $cc_compat_ver|cut -d. -f1`
      cc_compat_min=`echo $cc_compat_ver|cut -d. -f2`
      if [ $cc_compat_maj -lt 3 \
         -o \( $cc_compat_maj -eq 3 -a $cc_compat_min -lt 2 \) \
         -o \( $cc_compat_maj -eq 4 -a $cc_compat_min -lt 1 \) \
         -o \( $cc_compat_maj -eq 4 -a $cc_compat_min -gt 2 \) \
         -o $cc_compat_maj -gt 4 ]; then
        log ""
        log "  ** Version $cc_compat_ver of the compatibility gcc found. Expected gcc 3.x with x>1"
        log "  ** or gcc 4.x with 0<x<3"
        fail really
      fi
      cnf_append "VBOX_RECOMPILER_OP_GCC" "$CC_COMPAT"
    fi
  fi
  if check_avail "$CC" CC really; then
    cc_ver=`$CC -dumpversion` 2>/dev/null
    if [ $? -ne 0 ]; then
      log_failure "cannot execute '$CC -dumpversion'"
      fail really
    fi
    if check_avail "$CXX" CXX really; then
      cxx_ver=`$CXX -dumpversion` 2>/dev/null
      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"
      elif [ $cc_maj -eq 4 -a $cc_min -eq 3 ]; then
        if [ -z "$CC_COMPAT" ]; then
          log ""
          log "  ** There are known problems with gcc version 4.3 when compiling the recompiler"
          log "  ** stuff. You need to specify a compatibility compiler with version < 4.3. Look"
          log "  ** for a package compat-gcc-34 on Fedora systems or something similar on other"
          log "  ** distributions and call configure with parameter --with-gcc-compat=gcc34."
          fail really
        fi
      # gcc-4.0 is allowed for Darwin only
      elif [ $cc_maj -lt 3 \
             -o \( $cc_maj -eq 3 -a $cc_min -lt 2 \) \
             -o \( $cc_maj -eq 4 -a $cc_min -lt 1 -a "$OS" != "darwin" \) \
             -o \( $cc_maj -eq 4 -a $cc_min -gt 3 \) \
             -o $cc_maj -gt 4 ]; then
        log_failure "gcc version $cc_ver found, expected gcc 3.x with x>1 or gcc 4.x with 0<x<4"
        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 [ "$CC" != "gcc" ]; then
        cnf_append "TOOL_GCC3_CC"   "$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 [ "$CC32" != "gcc -m32" ]; then
        cnf_append "TOOL_GCC32_CC"  "$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 [ "$CXX32" != "g++ -m32" ]; then
        cnf_append "TOOL_GCC32_CXX" "$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
      # 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 bcc compiler, needed for compiling the BIOS
#
check_bcc()
{
  test_header bcc
  if check_avail "$BCC" BCC; then
    bcc_ver=`$BCC -v 2>&1|grep version|sed 's+^bcc: version \(.*\)+\1+'`
    if [ $? -ne 0 ]; then
      log_failure "not found"
      fail
    else
      echo "compiling the following source file:" >> $LOG
      cat > .tmp_src.c << EOF
int foo(a)
  int a;
{
  return 0;
}
EOF
      cat .tmp_src.c >> $LOG
      bcc_path=`which_wrapper $BCC`
      bcc_dir="`dirname $bcc_path`/"
      echo "using the following command line:" >> $LOG
      echo "$BCC -B $bcc_dir -C-c -3 -S -o .tmp_out .tmp_src.c" >> $LOG
      $BCC -B $bcc_dir -C-c -3 -S -o .tmp_out .tmp_src.c >> $LOG 2>&1
      if [ $? -ne 0 ]; then
        log_failure "not found"
        fail
      else
        log_success "found version $bcc_ver"
        cnf_append "VBOX_BCC" "$bcc_path -B $bcc_dir"
      fi
      unset bcc_path
      unset bcc_dir
    fi
  fi
}

#
# Check for the as86 assembler, needed for compiling the BIOS
#
check_as86()
{
  test_header as86
  if check_avail "$AS86" AS86; then
    as86_ver=`$AS86 -v 2>&1|grep version|sed 's+^as86 version: \(.*\)+\1+'`
    if [ $? -ne 0 ]; then
      log_failure "not found"
      fail
    else
      log_success "found version $as86_ver"
      cnf_append "VBOX_AS86" "`which_wrapper $AS86`"
    fi
  fi
}

#
# 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 "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 501 ]; then
        log_failure "found version $yasm_ver, expected at least 0.5.1"
        fail
      else
        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 version|sed 's+^ASL.*version \([0-9]*\).*+\1+'`
    if [ $? -ne 0 ]; then
      log_failure "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()
{
  test_header xslt
  if check_avail "$XSLTPROC" XSLTPROC; then
    xsltproc_ver=`$XSLTPROC --version`
    if [ $? -ne 0 ]; then
      log_failure "not found"
      fail
    else
      log_success "found"
      cnf_append "VBOX_XSLTPROC" "`which_wrapper $XSLTPROC`"
    fi
  fi
}

#
# Check for mkisofs, needed to build the CDROM image containing the additions
#
check_mkisofs()
{
  test_header mkisofs
  if which_wrapper $GENISOIMAGE > /dev/null; then
    mkisofs_ver=`$GENISOIMAGE --version`
    if [ $? -ne 0 ]; then
      log_failure "not found"
      fail
    else
      log_success "found $mkisofs_ver"
      cnf_append "VBOX_MKISOFS" "`which_wrapper $GENISOIMAGE`"
    fi
  elif check_avail "$MKISOFS" MKISOFS; then
    mkisofs_ver=`$MKISOFS --version`
    if [ $? -ne 0 ]; then
      log_failure "not found"
      fail
    else
      log_success "found $mkisofs_ver"
      cnf_append "VBOX_MKISOFS" "`which_wrapper $MKISOFS`"
    fi
  fi
}

#
# Check for libxml2, needed by VBoxSettings
# 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 [ $? -ne 0 ]; then
        log_failure "not found"
        fail
      else
        FLGXML2=`pkg-config libxml-2.0 --cflags`
        INCXML2=`strip_I "$FLGXML2"`
        LIBXML2=`pkg-config libxml-2.0 --libs`
        cat > .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 $I_INCXML2" xml2 xml2; then
          if test_execute; then
            cnf_append "SDK_VBOX_LIBXML2_INCS" "$INCXML2"
            cnf_append "SDK_VBOX_LIBXML2_LIBS" "`strip_l "$LIBXML2"`"
          fi
        fi
      fi
    elif which_wrapper xml2-config; then
      libxml2_ver=`xml2-config --version`
      if [ $? -ne 0 ]; then
        log_failure "not found"
        fail
      else
        log_success "found version $libxml2_ver"
        FLGXML2=`xml2-config --cflags`
        INCXML2=`strip_I "$FLGXML2"`
        LIBXML2=`xml2-config --libs`
        cat > .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 $I_INCXML2" xml2 xml2; then
          if test_execute; then
            cnf_append "SDK_VBOX_LIBXML2_INCS" "$INCXML2"
            cnf_append "SDK_VBOX_LIBXML2_LIBS" "`strip_l "$LIBXML2"`"
          fi
        fi
      fi
    else
      log_failure "neither pkg-config nor xml2-config found"
      fail
    fi
  fi
}

#
# Check for libxslt, needed by VBoxSettings. For now we depend on 1.1.17.
# This library is available on Ubuntu Edgy which fulfils the minimal libxml2
# requirement (2.6.26).
#
check_libxslt()
{
  if [ -z "$BUILD_LIBXSLT" ]; then
    test_header libxslt
    if which_wrapper pkg-config > /dev/null; then
      libxslt_ver=`pkg-config libxslt --modversion 2>> $LOG`
      if [ $? -ne 0 ]; then
        log_failure "not found"
        fail
      else
        FLGXSLT=`pkg-config libxslt --cflags`
        INCXSLT=`strip_I "$FLGXSLT"`
        LIBXSLT=`pkg-config libxslt --libs`
        cat > .tmp_src.cc << EOF
#include <cstdio>
#include <libxslt/xsltconfig.h>
extern "C" int main(void)
{
  printf("found version %s", LIBXSLT_DOTTED_VERSION);
#if LIBXSLT_VERSION >= 10117
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.1.17 or higher\n");
  return 1;
#endif
}
EOF
        [ -n "$INCXSLT" ] && I_INCXSLT=`prefix_I "$INCXSLT"`
        if test_compile "$LIBXSLT $LIBPTHREAD $I_INCXSLT" xslt xslt; then
          if test_execute; then
            cnf_append "SDK_VBOX_LIBXSLT_INCS" "$INCXSLT"
            cnf_append "SDK_VBOX_LIBXSLT_LIBS" "`strip_l "$LIBXSLT"`"
          fi
        fi
      fi
    elif which_wrapper xslt-config; then
      libxslt_ver=`xslt-config --version`
      if [ $? -ne 0 ]; then
        log_failure "not found"
        fail
      else
        log_success "found version $libxslt_ver"
        FLGXSLT=`xslt-config --cflags`
        INCXSLT=`strip_I "$FLGXSLT"`
        LIBXSLT=`xslt-config --libs`
        cat > .tmp_src.cc << EOF
#include <cstdio>
#include <libxslt/xsltconfig.h>
extern "C" int main(void)
{
  printf("found version %s", LIBXSLT_DOTTED_VERSION);
#if LIBXSLT_VERSION >= 10117
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 1.1.17 or higher\n");
  return 1;
#endif
}
EOF
        [ -n "$INCXSLT" ] && I_INCXSLT=`prefix_I "$INCXSLT"`
        if test_compile "$LIBXSLT $LIBPTHREAD $I_INCXSLT" xslt xslt; then
          if test_execute; then
            cnf_append "SDK_VBOX_LIBXSLT_INCS" "$INCXSLT"
            cnf_append "SDK_VBOX_LIBXSLT_LIBS" "`strip_l "$LIBXSLT"`"
          fi
        fi
      fi
    else
      log_failure "neither pkg-config nor xslt-config found"
      fail
    fi
  fi
}

#
# Check for libIDL, needed by xpcom
#
check_libidl()
{
  test_header libIDL

  if which_wrapper libIDL-config-2 > /dev/null; then
    libidl_ver=`libIDL-config-2 --version`
    if [ $? -ne 0 ]; then
      log_failure "not found"
      fail
    else
      log_success "found version $libidl_ver"
      cnf_append "VBOX_LIBIDL_CONFIG" \
        "PKG_CONFIG_PATH=`libIDL-config-2 --prefix`/$LIB/pkgconfig `which_wrapper libIDL-config-2`"
    fi
  elif check_avail "libIDL-config" libIDL-config; then
    libidl_ver=`libIDL-config --version`
    if [ $? -ne 0 ]; then
      log_failure "not found"
      fail
    else
      log_success "found version $libidl_ver"
      cnf_append "VBOX_LIBIDL_CONFIG" "`which_wrapper libIDL-config`"
    fi
  fi
}

#
# Check for openssl, needed for RDP
#
check_ssl()
{
  test_header ssl
  cat > .tmp_src.cc << EOF
#include <cstdio>
#include <openssl/opensslv.h>
extern "C" int main(void)
{
  printf("found version %s", OPENSSL_VERSION_TEXT);
#if OPENSSL_VERSION_NUMBER >= 0x0090700
  printf(", OK.\n");
  return 0;
#else
  printf(", expected version 0.9.7 or higher\n");
  return 1;
#endif
}
EOF
  if test_compile $LIBCRYPTO libcrypto openssl; then
    if test_execute nofatal; then
      cnf_append "SDK_VBOX_OPENSSL_INCS" ""
      cnf_append "SDK_VBOX_OPENSSL_LIBS" "`strip_l "$LIBCRYPTO"`"
    fi
  fi
}

#
# Check for pthread, needed by VBoxSVC, frontends, ...
#
check_pthread()
{
  test_header pthread
  cat > .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 > .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 $I_INCZ" zlib zlib; then
    if test_execute; then
      cnf_append "SDK_VBOX_ZLIB_LIBS" "`strip_l "$LIBZ"`"