#

# Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code 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

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

################################################################################

# The order of these defines the priority by which we try to find them.

VALID_VS_VERSIONS="2013 2012 2010 2015 2017"

VS_DESCRIPTION_2010="Microsoft Visual Studio 2010"

VS_VERSION_INTERNAL_2010=100

VS_MSVCR_2010=msvcr100.dll

# We don't use msvcp on Visual Studio 2010

#VS_MSVCP_2010=msvcp100.dll

VS_ENVVAR_2010="VS100COMNTOOLS"

VS_VS_INSTALLDIR_2010="Microsoft Visual Studio 10.0"

VS_SDK_INSTALLDIR_2010="Microsoft SDKs/Windows/v7.1"

VS_VS_PLATFORM_NAME_2010="v100"

VS_SDK_PLATFORM_NAME_2010="Windows7.1SDK"

VS_DESCRIPTION_2012="Microsoft Visual Studio 2012"

VS_VERSION_INTERNAL_2012=110

VS_MSVCR_2012=msvcr110.dll

VS_MSVCP_2012=msvcp110.dll

VS_ENVVAR_2012="VS110COMNTOOLS"

VS_VS_INSTALLDIR_2012="Microsoft Visual Studio 11.0"

VS_SDK_INSTALLDIR_2012=

VS_VS_PLATFORM_NAME_2012="v110"

VS_SDK_PLATFORM_NAME_2012=

VS_DESCRIPTION_2013="Microsoft Visual Studio 2013"

VS_VERSION_INTERNAL_2013=120

VS_MSVCR_2013=msvcr120.dll

VS_MSVCP_2013=msvcp120.dll

VS_ENVVAR_2013="VS120COMNTOOLS"

VS_VS_INSTALLDIR_2013="Microsoft Visual Studio 12.0"

VS_SDK_INSTALLDIR_2013=

VS_VS_PLATFORM_NAME_2013="v120"

VS_SDK_PLATFORM_NAME_2013=

VS_DESCRIPTION_2015="Microsoft Visual Studio 2015 - CURRENTLY NOT WORKING"

VS_VERSION_INTERNAL_2015=140

VS_MSVCR_2015=vcruntime140.dll

VS_MSVCP_2015=msvcp140.dll

VS_ENVVAR_2015="VS140COMNTOOLS"

VS_VS_INSTALLDIR_2015="Microsoft Visual Studio 14.0"

VS_SDK_INSTALLDIR_2015=

VS_VS_PLATFORM_NAME_2015="v140"

VS_SDK_PLATFORM_NAME_2015=

# The vcvars of 2015 breaks if 2017 is also installed. Work around this by

# explicitly specifying Windows Kit 8.1 to be used.

VS_ENV_ARGS_2015="8.1"

VS_DESCRIPTION_2017="Microsoft Visual Studio 2017 - CURRENTLY NOT WORKING"

VS_VERSION_INTERNAL_2017=141

VS_MSVCR_2017=vcruntime140.dll

VS_MSVCP_2017=msvcp140.dll

VS_ENVVAR_2017="VS150COMNTOOLS"

VS_VS_INSTALLDIR_2017="Microsoft Visual Studio/2017"

VS_EDITIONS_2017="Community Professional Enterprise"

VS_SDK_INSTALLDIR_2017=

VS_VS_PLATFORM_NAME_2017="v141"

VS_SDK_PLATFORM_NAME_2017=

################################################################################

AC_DEFUN([TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT],

[

  if test "x$VS_ENV_CMD" = x; then

    VS_VERSION="$1"

    VS_BASE="$2"

    METHOD="$3"

    BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(VS_BASE)

    # In VS 2017, the default installation is in a subdir named after the edition.

    # Find the first one present and use that.

    if test "x$VS_EDITIONS" != x; then

      for edition in $VS_EDITIONS; do

        if test -d "$VS_BASE/$edition"; then

          VS_BASE="$VS_BASE/$edition"

          break

        fi

      done

    fi

    if test -d "$VS_BASE"; then

      AC_MSG_NOTICE([Found Visual Studio installation at $VS_BASE using $METHOD])

      if test "x$OPENJDK_TARGET_CPU_BITS" = x32; then

        VCVARSFILES="vc/bin/vcvars32.bat vc/auxiliary/build/vcvars32.bat"

      else

        VCVARSFILES="vc/bin/amd64/vcvars64.bat vc/bin/x86_amd64/vcvarsx86_amd64.bat \

            vc/auxiliary/build/vcvarsx86_amd64.bat vc/auxiliary/build/vcvars64.bat"

      fi

      for VCVARSFILE in $VCVARSFILES; do

        if test -f "$VS_BASE/$VCVARSFILE"; then

          VS_ENV_CMD="$VS_BASE/$VCVARSFILE"

          break

        fi

      done

      if test "x$VS_ENV_CMD" = x; then

        AC_MSG_NOTICE([Warning: None of $VCVARSFILES were found, Visual Studio installation not recognized. Ignoring])

      else

        # PLATFORM_TOOLSET is used during the compilation of the freetype sources

        # (see 'LIB_BUILD_FREETYPE' in libraries.m4) and must be one of 'v100',

        # 'v110' or 'v120' for VS 2010, 2012 or VS2013

        eval PLATFORM_TOOLSET="\${VS_VS_PLATFORM_NAME_${VS_VERSION}}"

      fi

    fi

  fi

])

################################################################################

AC_DEFUN([TOOLCHAIN_CHECK_POSSIBLE_WIN_SDK_ROOT],

[

  if test "x$VS_ENV_CMD" = x; then

    VS_VERSION="$1"

    WIN_SDK_BASE="$2"

    METHOD="$3"

    BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(WIN_SDK_BASE)

    if test -d "$WIN_SDK_BASE"; then

      # There have been cases of partial or broken SDK installations. A missing

      # lib dir is not going to work.

      if test ! -d "$WIN_SDK_BASE/lib"; then

        AC_MSG_NOTICE([Found Windows SDK installation at $WIN_SDK_BASE using $METHOD])

        AC_MSG_NOTICE([Warning: Installation is broken, lib dir is missing. Ignoring])

      elif test -f "$WIN_SDK_BASE/Bin/SetEnv.Cmd"; then

        AC_MSG_NOTICE([Found Windows SDK installation at $WIN_SDK_BASE using $METHOD])

        VS_ENV_CMD="$WIN_SDK_BASE/Bin/SetEnv.Cmd"

        if test "x$OPENJDK_TARGET_CPU_BITS" = x32; then

          VS_ENV_ARGS="/x86"

        else

          VS_ENV_ARGS="/x64"

        fi

        # PLATFORM_TOOLSET is used during the compilation of the freetype sources (see

        # 'LIB_BUILD_FREETYPE' in libraries.m4) and must be 'Windows7.1SDK' for Windows7.1SDK

        # TODO: improve detection for other versions of SDK

        eval PLATFORM_TOOLSET="\${VS_SDK_PLATFORM_NAME_${VS_VERSION}}"

      else

        AC_MSG_NOTICE([Found Windows SDK installation at $WIN_SDK_BASE using $METHOD])

        AC_MSG_NOTICE([Warning: Installation is broken, SetEnv.Cmd is missing. Ignoring])

      fi

    fi

  fi

])

################################################################################

# Finds the bat or cmd file in Visual Studio or the SDK that sets up a proper

# build environment and assigns it to VS_ENV_CMD

AC_DEFUN([TOOLCHAIN_FIND_VISUAL_STUDIO_BAT_FILE],

[

  VS_VERSION="$1"

  eval VS_COMNTOOLS_VAR="\${VS_ENVVAR_${VS_VERSION}}"

  eval VS_COMNTOOLS="\$${VS_COMNTOOLS_VAR}"

  eval VS_INSTALL_DIR="\${VS_VS_INSTALLDIR_${VS_VERSION}}"

  eval VS_EDITIONS="\${VS_EDITIONS_${VS_VERSION}}"

  eval SDK_INSTALL_DIR="\${VS_SDK_INSTALLDIR_${VS_VERSION}}"

  eval VS_ENV_ARGS="\${VS_ENV_ARGS_${VS_VERSION}}"

  # When using --with-tools-dir, assume it points to the correct and default

  # version of Visual Studio or that --with-toolchain-version was also set.

  if test "x$with_tools_dir" != x; then

    TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT([${VS_VERSION}],

        [$with_tools_dir/../..], [--with-tools-dir])

    TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT([${VS_VERSION}],

        [$with_tools_dir/../../..], [--with-tools-dir])

    if test "x$VS_ENV_CMD" = x; then

      # Having specified an argument which is incorrect will produce an instant failure;

      # we should not go on looking

      AC_MSG_NOTICE([The path given by --with-tools-dir does not contain a valid])

      AC_MSG_NOTICE([Visual Studio installation. Please point to the VC/bin or VC/bin/amd64])

      AC_MSG_NOTICE([directory within the Visual Studio installation])

      AC_MSG_ERROR([Cannot locate a valid Visual Studio installation])

    fi

  fi

  VS_ENV_CMD=""

  if test "x$VS_COMNTOOLS" != x; then

    TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT([${VS_VERSION}],

        [$VS_COMNTOOLS/../..], [$VS_COMNTOOLS_VAR variable])

  fi

  if test "x$PROGRAMFILES" != x; then

    TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT([${VS_VERSION}],

        [$PROGRAMFILES/$VS_INSTALL_DIR], [well-known name])

  fi

  # Work around the insanely named ProgramFiles(x86) env variable

  PROGRAMFILES_X86="`env | $SED -n 's/^ProgramFiles(x86)=//p'`"

  if test "x$PROGRAMFILES_X86" != x; then

    TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT([${VS_VERSION}],

        [$PROGRAMFILES_X86/$VS_INSTALL_DIR], [well-known name])

  fi

  TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT([${VS_VERSION}],

      [C:/Program Files/$VS_INSTALL_DIR], [well-known name])

  TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT([${VS_VERSION}],

      [C:/Program Files (x86)/$VS_INSTALL_DIR], [well-known name])

  if test "x$SDK_INSTALL_DIR" != x; then

    if test "x$ProgramW6432" != x; then

      TOOLCHAIN_CHECK_POSSIBLE_WIN_SDK_ROOT([${VS_VERSION}],

          [$ProgramW6432/$SDK_INSTALL_DIR], [well-known name])

    fi

    if test "x$PROGRAMW6432" != x; then

      TOOLCHAIN_CHECK_POSSIBLE_WIN_SDK_ROOT([${VS_VERSION}],

          [$PROGRAMW6432/$SDK_INSTALL_DIR], [well-known name])

    fi

    if test "x$PROGRAMFILES" != x; then

      TOOLCHAIN_CHECK_POSSIBLE_WIN_SDK_ROOT([${VS_VERSION}],

          [$PROGRAMFILES/$SDK_INSTALL_DIR], [well-known name])

    fi

    TOOLCHAIN_CHECK_POSSIBLE_WIN_SDK_ROOT([${VS_VERSION}],

        [C:/Program Files/$SDK_INSTALL_DIR], [well-known name])

    TOOLCHAIN_CHECK_POSSIBLE_WIN_SDK_ROOT([${VS_VERSION}],

        [C:/Program Files (x86)/$SDK_INSTALL_DIR], [well-known name])

  fi

])

################################################################################

AC_DEFUN([TOOLCHAIN_FIND_VISUAL_STUDIO],

[

  AC_ARG_WITH(toolchain-version, [AS_HELP_STRING([--with-toolchain-version],

      [the version of the toolchain to look for, use '--help' to show possible values @<:@platform dependent@:>@])])

  if test "x$with_toolchain_version" = xlist; then

    # List all toolchains

    AC_MSG_NOTICE([The following toolchain versions are valid on this platform:])

    for version in $VALID_VS_VERSIONS; do

      eval VS_DESCRIPTION=\${VS_DESCRIPTION_$version}

      $PRINTF "  %-10s  %s\n" $version "$VS_DESCRIPTION"

    done

    exit 0

  elif test "x$DEVKIT_VS_VERSION" != x; then

    VS_VERSION=$DEVKIT_VS_VERSION

    TOOLCHAIN_VERSION=$VS_VERSION

    # If the devkit has a name, use that as description

    VS_DESCRIPTION="$DEVKIT_NAME"

    if test "x$VS_DESCRIPTION" = x; then

      eval VS_DESCRIPTION="\${VS_DESCRIPTION_${VS_VERSION}}"

    fi

    eval VS_VERSION_INTERNAL="\${VS_VERSION_INTERNAL_${VS_VERSION}}"

    eval MSVCR_NAME="\${VS_MSVCR_${VS_VERSION}}"

    eval MSVCP_NAME="\${VS_MSVCP_${VS_VERSION}}"

    eval PLATFORM_TOOLSET="\${VS_VS_PLATFORM_NAME_${VS_VERSION}}"

    VS_PATH="$TOOLCHAIN_PATH:$PATH"

    # Convert DEVKIT_VS_INCLUDE into windows style VS_INCLUDE so that it

    # can still be exported as INCLUDE for compiler invocations without

    # SYSROOT_CFLAGS

    OLDIFS="$IFS"

    IFS=";"

    for i in $DEVKIT_VS_INCLUDE; do

      ipath=$i

      BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH([ipath])

      VS_INCLUDE="$VS_INCLUDE;$ipath"

    done

    # Convert DEVKIT_VS_LIB into VS_LIB so that it can still be exported

    # as LIB for compiler invocations without SYSROOT_LDFLAGS

    for i in $DEVKIT_VS_LIB; do

      libpath=$i

      BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH([libpath])

      VS_LIB="$VS_LIB;$libpath"

    done

    IFS="$OLDIFS"

    AC_MSG_NOTICE([Found devkit $VS_DESCRIPTION])

  elif test "x$with_toolchain_version" != x; then

    # User override; check that it is valid

    if test "x${VALID_VS_VERSIONS/$with_toolchain_version/}" = "x${VALID_VS_VERSIONS}"; then

      AC_MSG_NOTICE([Visual Studio version $with_toolchain_version is not valid.])

      AC_MSG_NOTICE([Valid Visual Studio versions: $VALID_VS_VERSIONS.])

      AC_MSG_ERROR([Cannot continue.])

    fi

    VS_VERSIONS_PROBE_LIST="$with_toolchain_version"

  else

    # No flag given, use default

    VS_VERSIONS_PROBE_LIST="$VALID_VS_VERSIONS"

  fi

  for VS_VERSION in $VS_VERSIONS_PROBE_LIST; do

    TOOLCHAIN_FIND_VISUAL_STUDIO_BAT_FILE([$VS_VERSION])

    if test "x$VS_ENV_CMD" != x; then

      TOOLCHAIN_VERSION=$VS_VERSION

      eval VS_DESCRIPTION="\${VS_DESCRIPTION_${VS_VERSION}}"

      eval VS_VERSION_INTERNAL="\${VS_VERSION_INTERNAL_${VS_VERSION}}"

      eval MSVCR_NAME="\${VS_MSVCR_${VS_VERSION}}"

      eval MSVCP_NAME="\${VS_MSVCP_${VS_VERSION}}"

      # The rest of the variables are already evaled while probing

      AC_MSG_NOTICE([Found $VS_DESCRIPTION])

      break

    fi

  done

  TOOLCHAIN_DESCRIPTION="$VS_DESCRIPTION"

  if test "$TOOLCHAIN_VERSION" -gt 2013; then

    UNSUPPORTED_TOOLCHAIN_VERSION=yes

  fi

])

################################################################################

# Check if the VS env variables were setup prior to running configure.

# If not, then find vcvarsall.bat and run it automatically, and integrate

# the set env variables into the spec file.

AC_DEFUN([TOOLCHAIN_SETUP_VISUAL_STUDIO_ENV],

[

  # Store path to cygwin link.exe to help excluding it when searching for

  # VS linker. This must be done before changing the PATH when looking for VS.

  AC_PATH_PROG(CYGWIN_LINK, link)

  if test "x$CYGWIN_LINK" != x; then

    AC_MSG_CHECKING([if the first found link.exe is actually the Cygwin link tool])

    "$CYGWIN_LINK" --version > /dev/null

    if test $? -eq 0 ; then

      AC_MSG_RESULT([yes])

    else

      AC_MSG_RESULT([no])

      # This might be the VS linker. Don't exclude it later on.

      CYGWIN_LINK=""

    fi

  fi

  # First-hand choice is to locate and run the vsvars bat file.

  TOOLCHAIN_FIND_VISUAL_STUDIO

  # If we have a devkit, skip all of the below.

  if test "x$DEVKIT_VS_VERSION" = x; then

    if test "x$VS_ENV_CMD" != x; then

      # We have found a Visual Studio environment on disk, let's extract variables from the vsvars bat file.

      BASIC_FIXUP_EXECUTABLE(VS_ENV_CMD)

      # Lets extract the variables that are set by vcvarsall.bat/vsvars32.bat/vsvars64.bat

      AC_MSG_NOTICE([Trying to extract Visual Studio environment variables])

      # We need to create a couple of temporary files.

      VS_ENV_TMP_DIR="$CONFIGURESUPPORT_OUTPUTDIR/vs-env"

      $MKDIR -p $VS_ENV_TMP_DIR

      # Cannot use the VS10 setup script directly (since it only updates the DOS subshell environment).

      # Instead create a shell script which will set the relevant variables when run.

      WINPATH_VS_ENV_CMD="$VS_ENV_CMD"

      BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH([WINPATH_VS_ENV_CMD])

      WINPATH_BASH="$BASH"

      BASIC_WINDOWS_REWRITE_AS_WINDOWS_MIXED_PATH([WINPATH_BASH])

      # Generate a DOS batch file which runs $VS_ENV_CMD, and then creates a shell

      # script (executable by bash) that will setup the important variables.

      EXTRACT_VC_ENV_BAT_FILE="$VS_ENV_TMP_DIR/extract-vs-env.bat"

      $ECHO "@echo off" >  $EXTRACT_VC_ENV_BAT_FILE

      # This will end up something like:

      # call C:/progra~2/micros~2.0/vc/bin/amd64/vcvars64.bat

      $ECHO "call $WINPATH_VS_ENV_CMD $VS_ENV_ARGS" >> $EXTRACT_VC_ENV_BAT_FILE

      # In some cases, the VS_ENV_CMD will change directory, change back so

      # the set-vs-env.sh ends up in the right place.

      $ECHO 'cd %~dp0' >> $EXTRACT_VC_ENV_BAT_FILE

      # These will end up something like:

      # C:/CygWin/bin/bash -c 'echo VS_PATH=\"$PATH\" > localdevenv.sh

      # The trailing space for everyone except PATH is no typo, but is needed due

      # to trailing \ in the Windows paths. These will be stripped later.

      $ECHO "$WINPATH_BASH -c 'echo VS_PATH="'\"$PATH\" > set-vs-env.sh' \

          >> $EXTRACT_VC_ENV_BAT_FILE

      $ECHO "$WINPATH_BASH -c 'echo VS_INCLUDE="'\"$INCLUDE\;$include \" >> set-vs-env.sh' \

          >> $EXTRACT_VC_ENV_BAT_FILE

      $ECHO "$WINPATH_BASH -c 'echo VS_LIB="'\"$LIB\;$lib \" >> set-vs-env.sh' \

          >> $EXTRACT_VC_ENV_BAT_FILE

      $ECHO "$WINPATH_BASH -c 'echo VCINSTALLDIR="'\"$VCINSTALLDIR \" >> set-vs-env.sh' \

          >> $EXTRACT_VC_ENV_BAT_FILE

      $ECHO "$WINPATH_BASH -c 'echo WindowsSdkDir="'\"$WindowsSdkDir \" >> set-vs-env.sh' \

          >> $EXTRACT_VC_ENV_BAT_FILE

      $ECHO "$WINPATH_BASH -c 'echo WINDOWSSDKDIR="'\"$WINDOWSSDKDIR \" >> set-vs-env.sh' \

          >> $EXTRACT_VC_ENV_BAT_FILE

      # Now execute the newly created bat file.

      # The | cat is to stop SetEnv.Cmd to mess with system colors on msys.

      # Change directory so we don't need to mess with Windows paths in redirects.

      cd $VS_ENV_TMP_DIR

      cmd /c extract-vs-env.bat | $CAT

      cd $CURDIR

      if test ! -s $VS_ENV_TMP_DIR/set-vs-env.sh; then

        AC_MSG_NOTICE([Could not succesfully extract the envionment variables needed for the VS setup.])

        AC_MSG_NOTICE([Try setting --with-tools-dir to the VC/bin directory within the VS installation])

        AC_MSG_NOTICE([or run "bash.exe -l" from a VS command prompt and then run configure from there.])

        AC_MSG_ERROR([Cannot continue])

      fi

      # Now set all paths and other env variables. This will allow the rest of

      # the configure script to find and run the compiler in the proper way.

      AC_MSG_NOTICE([Setting extracted environment variables])

      . $VS_ENV_TMP_DIR/set-vs-env.sh

      # Now we have VS_PATH, VS_INCLUDE, VS_LIB. For further checking, we

      # also define VCINSTALLDIR, WindowsSdkDir and WINDOWSSDKDIR.

    else

      # We did not find a vsvars bat file, let's hope we are run from a VS command prompt.

      AC_MSG_NOTICE([Cannot locate a valid Visual Studio installation, checking current environment])

    fi

  fi

  # At this point, we should have correct variables in the environment, or we can't continue.

  AC_MSG_CHECKING([for Visual Studio variables])

  if test "x$VCINSTALLDIR" != x || test "x$WindowsSDKDir" != x \

      || test "x$WINDOWSSDKDIR" != x || test "x$DEVKIT_NAME" != x; then

    if test "x$VS_INCLUDE" = x || test "x$VS_LIB" = x; then

      AC_MSG_RESULT([present but broken])

      AC_MSG_ERROR([Your VC command prompt seems broken, INCLUDE and/or LIB is missing.])

    else

      AC_MSG_RESULT([ok])

      # Remove any trailing "\" ";" and " " from the variables.

      VS_INCLUDE=`$ECHO "$VS_INCLUDE" | $SED -e 's/\\\\*;* *$//'`

      VS_LIB=`$ECHO "$VS_LIB" | $SED 's/\\\\*;* *$//'`

      VCINSTALLDIR=`$ECHO "$VCINSTALLDIR" | $SED 's/\\\\* *$//'`

      WindowsSDKDir=`$ECHO "$WindowsSDKDir" | $SED 's/\\\\* *$//'`

      WINDOWSSDKDIR=`$ECHO "$WINDOWSSDKDIR" | $SED 's/\\\\* *$//'`

      # Remove any paths containing # (typically F#) as that messes up make. This

      # is needed if visual studio was installed with F# support.

      VS_PATH=`$ECHO "$VS_PATH" | $SED 's/[[^:#]]*#[^:]*://g'`

      AC_SUBST(VS_PATH)

      AC_SUBST(VS_INCLUDE)

      AC_SUBST(VS_LIB)

      # Convert VS_INCLUDE into SYSROOT_CFLAGS

      OLDIFS="$IFS"

      IFS=";"

      for i in $VS_INCLUDE; do

        ipath=$i

        # Only process non-empty elements

        if test "x$ipath" != x; then

          IFS="$OLDIFS"

          # Check that directory exists before calling fixup_path

          testpath=$ipath

          BASIC_WINDOWS_REWRITE_AS_UNIX_PATH([testpath])

          if test -d "$testpath"; then

            BASIC_FIXUP_PATH([ipath])

            SYSROOT_CFLAGS="$SYSROOT_CFLAGS -I$ipath"

          fi

          IFS=";"

        fi

      done

      # Convert VS_LIB into SYSROOT_LDFLAGS

      for i in $VS_LIB; do

        libpath=$i

        # Only process non-empty elements

        if test "x$libpath" != x; then

          IFS="$OLDIFS"

          # Check that directory exists before calling fixup_path

          testpath=$libpath

          BASIC_WINDOWS_REWRITE_AS_UNIX_PATH([testpath])

          if test -d "$testpath"; then

            BASIC_FIXUP_PATH([libpath])

            SYSROOT_LDFLAGS="$SYSROOT_LDFLAGS -libpath:$libpath"

          fi

          IFS=";"

        fi

      done

      IFS="$OLDIFS"

    fi

  else

    AC_MSG_RESULT([not found])

    if test "x$VS_ENV_CMD" = x; then

      AC_MSG_NOTICE([Cannot locate a valid Visual Studio or Windows SDK installation on disk,])

      AC_MSG_NOTICE([nor is this script run from a Visual Studio command prompt.])

    else

      AC_MSG_NOTICE([Running the extraction script failed.])

    fi

    AC_MSG_NOTICE([Try setting --with-tools-dir to the VC/bin directory within the VS installation])

    AC_MSG_NOTICE([or run "bash.exe -l" from a VS command prompt and then run configure from there.])

    AC_MSG_ERROR([Cannot continue])

  fi

])

AC_DEFUN([TOOLCHAIN_CHECK_POSSIBLE_MSVC_DLL],