--- a/doc/building.html	Fri Apr 26 16:25:43 2019 +0100
+++ b/doc/building.html	Fri Apr 26 18:56:15 2019 +0300
@@ -369,7 +369,7 @@
 $ CC -V
 CC: Sun C++ 5.13 SunOS_i386 151846-10 2015/10/30</code></pre>
 <h3 id="microsoft-visual-studio">Microsoft Visual Studio</h3>
-<p>The minimum accepted version of Visual Studio is 2010. Older versions will not be accepted by <code>configure</code>. The maximum accepted version of Visual Studio is 2017. Versions older than 2017 are unlikely to continue working for long.</p>
+<p>The minimum accepted version of Visual Studio is 2010. Older versions will not be accepted by <code>configure</code>. The maximum accepted version of Visual Studio is 2019. Versions older than 2017 are unlikely to continue working for long.</p>
 <p>If you have multiple versions of Visual Studio installed, <code>configure</code> will by default pick the latest. You can request a specific version to be used by setting <code>--with-toolchain-version</code>, e.g. <code>--with-toolchain-version=2015</code>.</p>
 <p>If you get <code>LINK: fatal error LNK1123: failure during conversion to COFF: file invalid</code> when building using Visual Studio 2010, you have encountered <a href="http://support.microsoft.com/kb/2757355">KB2757355</a>, a bug triggered by a specific installation order. However, the solution suggested by the KB article does not always resolve the problem. See <a href="https://stackoverflow.com/questions/10888391">this stackoverflow discussion</a> for other suggestions.</p>
 <h3 id="ibm-xl-cc">IBM XL C/C++</h3>

--- a/doc/building.md	Fri Apr 26 16:25:43 2019 +0100
+++ b/doc/building.md	Fri Apr 26 18:56:15 2019 +0300
@@ -404,7 +404,7 @@
 
 The minimum accepted version of Visual Studio is 2010. Older versions will not
 be accepted by `configure`. The maximum accepted version of Visual Studio is
-2017. Versions older than 2017 are unlikely to continue working for long.
+2019. Versions older than 2017 are unlikely to continue working for long.
 
 If you have multiple versions of Visual Studio installed, `configure` will by
 default pick the latest. You can request a specific version to be used by

--- a/make/autoconf/toolchain_windows.m4	Fri Apr 26 16:25:43 2019 +0100
+++ b/make/autoconf/toolchain_windows.m4	Fri Apr 26 18:56:15 2019 +0300
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2019, 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
@@ -25,7 +25,7 @@
 
 ################################################################################
 # The order of these defines the priority by which we try to find them.
-VALID_VS_VERSIONS="2017 2013 2015 2012 2010"
+VALID_VS_VERSIONS="2017 2019 2013 2015 2012 2010"
 
 VS_DESCRIPTION_2010="Microsoft Visual Studio 2010"
 VS_VERSION_INTERNAL_2010=100
@@ -89,6 +89,20 @@
 VS_SUPPORTED_2017=true
 VS_TOOLSET_SUPPORTED_2017=true
 
+VS_DESCRIPTION_2019="Microsoft Visual Studio 2019"
+VS_VERSION_INTERNAL_2019=141
+VS_MSVCR_2019=vcruntime140.dll
+VS_MSVCP_2019=msvcp140.dll
+VS_ENVVAR_2019="VS160COMNTOOLS"
+VS_USE_UCRT_2019="true"
+VS_VS_INSTALLDIR_2019="Microsoft Visual Studio/2019"
+VS_EDITIONS_2019="BuildTools Community Professional Enterprise"
+VS_SDK_INSTALLDIR_2019=
+VS_VS_PLATFORM_NAME_2019="v142"
+VS_SDK_PLATFORM_NAME_2019=
+VS_SUPPORTED_2019=false
+VS_TOOLSET_SUPPORTED_2019=false
+
 ################################################################################
 
 AC_DEFUN([TOOLCHAIN_CHECK_POSSIBLE_VISUAL_STUDIO_ROOT],
@@ -99,7 +113,7 @@
     METHOD="$3"
 
     BASIC_WINDOWS_REWRITE_AS_UNIX_PATH(VS_BASE)
-    # In VS 2017, the default installation is in a subdir named after the edition.
+    # In VS 2017 and VS 2019, 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 $VS_EDITIONS; do
@@ -662,7 +676,7 @@
       else
         CYGWIN_VC_TOOLS_REDIST_DIR="$VCToolsRedistDir"
         BASIC_FIXUP_PATH(CYGWIN_VC_TOOLS_REDIST_DIR)
-        # Probe: Using well-known location from VS 2017
+        # Probe: Using well-known location from VS 2017 and VS 2019
         if test "x$OPENJDK_TARGET_CPU_BITS" = x64; then
           POSSIBLE_MSVC_DLL="`ls $CYGWIN_VC_TOOLS_REDIST_DIR/x64/Microsoft.VC${VS_VERSION_INTERNAL}.CRT/$DLL_NAME`"
         else

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/devkit/createWindowsDevkit2019.sh	Fri Apr 26 18:56:15 2019 +0300
@@ -0,0 +1,209 @@
+#!/bin/bash
+#
+# Copyright (c) 2019, 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.
+#
+
+# This script copies parts of a Visual Studio installation into a devkit
+# suitable for building OpenJDK and OracleJDK. Needs to run in Cygwin or WSL.
+# erik.joelsson@oracle.com
+
+VS_VERSION="2019"
+VS_VERSION_NUM_NODOT="160"
+VS_DLL_VERSION="140"
+SDK_VERSION="10"
+SDK_FULL_VERSION="10.0.17763.0"
+MSVC_DIR="Microsoft.VC141.CRT"
+MSVC_FULL_VERSION="14.12.27508"
+REDIST_FULL_VERSION="14.20.27508"
+
+SCRIPT_DIR="$(cd "$(dirname $0)" > /dev/null && pwd)"
+BUILD_DIR="${SCRIPT_DIR}/../../build/devkit"
+
+################################################################################
+# Prepare settings
+
+UNAME_SYSTEM=`uname -s`
+UNAME_RELEASE=`uname -r`
+
+# Detect cygwin or WSL
+IS_CYGWIN=`echo $UNAME_SYSTEM | grep -i CYGWIN`
+IS_WSL=`echo $UNAME_RELEASE | grep Microsoft`
+if test "x$IS_CYGWIN" != "x"; then
+    BUILD_ENV="cygwin"
+elif test "x$IS_WSL" != "x"; then
+    BUILD_ENV="wsl"
+else
+    echo "Unknown environment; only Cygwin and WSL are supported."
+    exit 1
+fi
+
+if test "x$BUILD_ENV" = "xcygwin"; then
+    WINDOWS_PATH_TO_UNIX_PATH="cygpath -u"
+elif test "x$BUILD_ENV" = "xwsl"; then
+    WINDOWS_PATH_TO_UNIX_PATH="wslpath -u"
+fi
+
+# Work around the insanely named ProgramFiles(x86) env variable
+PROGRAMFILES_X86="$($WINDOWS_PATH_TO_UNIX_PATH "$(cmd.exe /c set | sed -n 's/^ProgramFiles(x86)=//p' | tr -d '\r')")"
+
+# Find Visual Studio installation dir
+VSNNNCOMNTOOLS=`cmd.exe /c echo %VS${VS_VERSION_NUM_NODOT}COMNTOOLS% | tr -d '\r'`
+if [ -d "$VSNNNCOMNTOOLS" ]; then
+    VS_INSTALL_DIR="$($WINDOWS_PATH_TO_UNIX_PATH "$VSNNNCOMNTOOLS/../..")"
+else
+    VS_INSTALL_DIR="${PROGRAMFILES_X86}/Microsoft Visual Studio/2019"
+    VS_INSTALL_DIR="$(ls -d "${VS_INSTALL_DIR}/"{Community,Professional,Enterprise} 2>/dev/null | head -n1)"
+fi
+echo "VS_INSTALL_DIR: $VS_INSTALL_DIR"
+
+# Extract semantic version
+POTENTIAL_INI_FILES="Common7/IDE/wdexpress.isolation.ini Common7/IDE/devenv.isolation.ini"
+for f in $POTENTIAL_INI_FILES; do
+    if [ -f "$VS_INSTALL_DIR/$f" ]; then
+        VS_VERSION_SP="$(grep ^SemanticVersion= "$VS_INSTALL_DIR/$f")"
+        # Remove SemnaticVersion=
+        VS_VERSION_SP="${VS_VERSION_SP#*=}"
+        # Remove suffix of too detailed numbering starting with +
+        VS_VERSION_SP="${VS_VERSION_SP%+*}"
+        break
+    fi
+done
+if [ -z "$VS_VERSION_SP" ]; then
+    echo "Failed to find SP version"
+    exit 1
+fi
+echo "Found Version SP: $VS_VERSION_SP"
+
+# Setup output dirs
+DEVKIT_ROOT="${BUILD_DIR}/VS${VS_VERSION}-${VS_VERSION_SP}-devkit"
+DEVKIT_BUNDLE="${DEVKIT_ROOT}.tar.gz"
+
+echo "Creating devkit in $DEVKIT_ROOT"
+
+MSVCR_DLL=${MSVC_DIR}/vcruntime${VS_DLL_VERSION}.dll
+MSVCP_DLL=${MSVC_DIR}/msvcp${VS_DLL_VERSION}.dll
+
+################################################################################
+# Copy Visual Studio files
+
+TOOLS_VERSION="$(ls "$VS_INSTALL_DIR/VC/Tools/MSVC" | sort -r -n | head -n1)"
+echo "Found Tools version: $TOOLS_VERSION"
+VC_SUBDIR="VC/Tools/MSVC/$TOOLS_VERSION"
+REDIST_VERSION="$(ls "$VS_INSTALL_DIR/VC/Redist/MSVC" | sort -r -n | head -n1)"
+echo "Found Redist version: $REDIST_VERSION"
+REDIST_SUBDIR="VC/Redist/MSVC/$REDIST_VERSION"
+echo "Copying VC..."
+rm -rf $DEVKIT_ROOT/VC
+mkdir -p $DEVKIT_ROOT/VC/bin
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/bin/Hostx64/x64" $DEVKIT_ROOT/VC/bin/
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/bin/Hostx86/x86" $DEVKIT_ROOT/VC/bin/
+mkdir -p $DEVKIT_ROOT/VC/lib
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/lib/x64" $DEVKIT_ROOT/VC/lib/
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/lib/x86" $DEVKIT_ROOT/VC/lib/
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/include" $DEVKIT_ROOT/VC/
+mkdir -p $DEVKIT_ROOT/VC/atlmfc/lib
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/atlmfc/lib/x64" $DEVKIT_ROOT/VC/atlmfc/lib/
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/atlmfc/lib/x86" $DEVKIT_ROOT/VC/atlmfc/lib/
+cp -r "$VS_INSTALL_DIR/${VC_SUBDIR}/atlmfc/include" $DEVKIT_ROOT/VC/atlmfc/
+mkdir -p $DEVKIT_ROOT/VC/Auxiliary
+cp -r "$VS_INSTALL_DIR/VC/Auxiliary/Build" $DEVKIT_ROOT/VC/Auxiliary/
+mkdir -p $DEVKIT_ROOT/VC/redist
+cp -r "$VS_INSTALL_DIR/$REDIST_SUBDIR/x64" $DEVKIT_ROOT/VC/redist/
+cp -r "$VS_INSTALL_DIR/$REDIST_SUBDIR/x86" $DEVKIT_ROOT/VC/redist/
+
+# The redist runtime libs are needed to run the compiler but may not be
+# installed on the machine where the devkit will be used.
+cp $DEVKIT_ROOT/VC/redist/x86/$MSVCR_DLL $DEVKIT_ROOT/VC/bin/x86
+cp $DEVKIT_ROOT/VC/redist/x86/$MSVCP_DLL $DEVKIT_ROOT/VC/bin/x86
+cp $DEVKIT_ROOT/VC/redist/x64/$MSVCR_DLL $DEVKIT_ROOT/VC/bin/x64
+cp $DEVKIT_ROOT/VC/redist/x64/$MSVCP_DLL $DEVKIT_ROOT/VC/bin/x64
+
+################################################################################
+# Copy SDK files
+
+SDK_INSTALL_DIR="$PROGRAMFILES_X86/Windows Kits/$SDK_VERSION"
+echo "SDK_INSTALL_DIR: $SDK_INSTALL_DIR"
+
+SDK_FULL_VERSION="$(ls "$SDK_INSTALL_DIR/bin" | sort -r -n | head -n1)"
+echo "Found SDK version: $SDK_FULL_VERSION"
+UCRT_VERSION="$(ls "$SDK_INSTALL_DIR/Redist" | grep $SDK_VERSION | sort -r -n | head -n1)"
+echo "Found UCRT version: $UCRT_VERSION"
+echo "Copying SDK..."
+rm -rf $DEVKIT_ROOT/$SDK_VERSION
+mkdir -p $DEVKIT_ROOT/$SDK_VERSION/bin
+cp -r "$SDK_INSTALL_DIR/bin/$SDK_FULL_VERSION/x64" $DEVKIT_ROOT/$SDK_VERSION/bin/
+cp -r "$SDK_INSTALL_DIR/bin/$SDK_FULL_VERSION/x86" $DEVKIT_ROOT/$SDK_VERSION/bin/
+mkdir -p $DEVKIT_ROOT/$SDK_VERSION/lib
+cp -r "$SDK_INSTALL_DIR/lib/$SDK_FULL_VERSION/um/x64" $DEVKIT_ROOT/$SDK_VERSION/lib/
+cp -r "$SDK_INSTALL_DIR/lib/$SDK_FULL_VERSION/um/x86" $DEVKIT_ROOT/$SDK_VERSION/lib/
+cp -r "$SDK_INSTALL_DIR/lib/$SDK_FULL_VERSION/ucrt/x64" $DEVKIT_ROOT/$SDK_VERSION/lib/
+cp -r "$SDK_INSTALL_DIR/lib/$SDK_FULL_VERSION/ucrt/x86" $DEVKIT_ROOT/$SDK_VERSION/lib/
+mkdir -p $DEVKIT_ROOT/$SDK_VERSION/Redist
+cp -r "$SDK_INSTALL_DIR/Redist/$UCRT_VERSION/ucrt" $DEVKIT_ROOT/$SDK_VERSION/Redist/
+mkdir -p $DEVKIT_ROOT/$SDK_VERSION/include
+cp -r "$SDK_INSTALL_DIR/include/$SDK_FULL_VERSION/"* $DEVKIT_ROOT/$SDK_VERSION/include/
+
+################################################################################
+# Generate devkit.info
+
+echo-info() {
+    echo "$1" >> $DEVKIT_ROOT/devkit.info
+}
+
+echo "Generating devkit.info..."
+rm -f $DEVKIT_ROOT/devkit.info
+echo-info "# This file describes to configure how to interpret the contents of this devkit"
+echo-info "DEVKIT_NAME=\"Microsoft Visual Studio $VS_VERSION $VS_VERSION_SP (devkit)\""
+echo-info "DEVKIT_VS_VERSION=\"$VS_VERSION\""
+echo-info ""
+echo-info "DEVKIT_TOOLCHAIN_PATH_x86=\"\$DEVKIT_ROOT/VC/bin/x86:\$DEVKIT_ROOT/$SDK_VERSION/bin/x86\""
+echo-info "DEVKIT_VS_INCLUDE_x86=\"\$DEVKIT_ROOT/VC/include;\$DEVKIT_ROOT/VC/atlmfc/include;\$DEVKIT_ROOT/$SDK_VERSION/include/shared;\$DEVKIT_ROOT/$SDK_VERSION/include/ucrt;\$DEVKIT_ROOT/$SDK_VERSION/include/um;\$DEVKIT_ROOT/$SDK_VERSION/include/winrt\""
+echo-info "DEVKIT_VS_LIB_x86=\"\$DEVKIT_ROOT/VC/lib/x86;\$DEVKIT_ROOT/VC/atlmfc/lib/x86;\$DEVKIT_ROOT/$SDK_VERSION/lib/x86\""
+echo-info "DEVKIT_MSVCR_DLL_x86=\"\$DEVKIT_ROOT/VC/redist/x86/$MSVCR_DLL\""
+echo-info "DEVKIT_MSVCP_DLL_x86=\"\$DEVKIT_ROOT/VC/redist/x86/$MSVCP_DLL\""
+echo-info "DEVKIT_UCRT_DLL_DIR_x86=\"\$DEVKIT_ROOT/10/Redist/ucrt/DLLs/x86\""
+echo-info ""
+echo-info "DEVKIT_TOOLCHAIN_PATH_x86_64=\"\$DEVKIT_ROOT/VC/bin/x64:\$DEVKIT_ROOT/$SDK_VERSION/bin/x64:\$DEVKIT_ROOT/$SDK_VERSION/bin/x86\""
+echo-info "DEVKIT_VS_INCLUDE_x86_64=\"\$DEVKIT_ROOT/VC/include;\$DEVKIT_ROOT/VC/atlmfc/include;\$DEVKIT_ROOT/$SDK_VERSION/include/shared;\$DEVKIT_ROOT/$SDK_VERSION/include/ucrt;\$DEVKIT_ROOT/$SDK_VERSION/include/um;\$DEVKIT_ROOT/$SDK_VERSION/include/winrt\""
+echo-info "DEVKIT_VS_LIB_x86_64=\"\$DEVKIT_ROOT/VC/lib/x64;\$DEVKIT_ROOT/VC/atlmfc/lib/x64;\$DEVKIT_ROOT/$SDK_VERSION/lib/x64\""
+echo-info "DEVKIT_MSVCR_DLL_x86_64=\"\$DEVKIT_ROOT/VC/redist/x64/$MSVCR_DLL\""
+echo-info "DEVKIT_MSVCP_DLL_x86_64=\"\$DEVKIT_ROOT/VC/redist/x64/$MSVCP_DLL\""
+echo-info "DEVKIT_UCRT_DLL_DIR_x86_64=\"\$DEVKIT_ROOT/10/Redist/ucrt/DLLs/x64\""
+echo-info ""
+echo-info "DEVKIT_TOOLS_VERSION=\"$TOOLS_VERSION\""
+echo-info "DEVKIT_REDIST_VERSION=\"$REDIST_VERSION\""
+echo-info "DEVKIT_SDK_VERSION=\"$SDK_FULL_VERSION\""
+echo-info "DEVKIT_UCRT_VERSION=\"$UCRT_VERSION\""
+
+################################################################################
+# Copy this script
+
+echo "Copying this script..."
+cp $0 $DEVKIT_ROOT/
+
+################################################################################
+# Create bundle
+
+echo "Creating bundle: $DEVKIT_BUNDLE"
+(cd "$DEVKIT_ROOT" && tar zcf "$DEVKIT_BUNDLE" .)