configure fails for lo 6.1.6 - Windows SDK... configure: error: Some (all?) Windows SDK files not found

Hi,

building LO master/6.2.3 works fine.

now i tried to build LO 6.1.6 but failed during configure:

> checking for Windows SDK... configure: error: Some (all?) Windows SDK files not found,
> please check if all needed parts of the  Windows SDK are installed.
> Error running configure at /cygdrive/d/sources/libo-61/autogen.sh line 289.

Do i need to install a different Windows SDK ?

Regards
Oliver

--

$ ./g checkout libreoffice-6-1-6
Checke Dateien aus: 100% (24279/24279), Fertig.
M       icon-themes/elementary/cmd/sc_grafluminance.png
Zu Branch 'libreoffice-6-1-6' gewechselt
Ihr Branch ist auf dem selben Stand wie 'origin/libreoffice-6-1-6'.

/cygdrive/d/sources/libo-61
$ /cygdrive/d/sources/libo-61/autogen.sh   --with-external-tar=/cygdrive/d/sources/lo-61-externalsrc
  --with-junit=/cygdrive/d/sources/junit-4.10.jar
--with-ant-home=/cygdrive/d/sources/apache-ant-1.9.5
--with-jdk-home=/cygdrive/d/Programme/Java/jdk1.8.0x64   --enable-pch --disable-ccache
--enable-debug --enable-64-bit
Running ./configure with '--with-external-tar=/cygdrive/d/sources/lo-61-externalsrc
--with-junit=/cygdrive/d/sources/junit-4.10.jar --with-ant-home=/cygdrive/d/sources/apache-ant-1.9.5
--with-jdk-home=/cygdrive/d/Programme/Java/jdk1.8.0x64 --enable-pch --disable-ccache --enable-debug
--enable-64-bit --srcdir=/cygdrive/d/sources/libo-61 --enable-option-checking=fatal'
********************************************************************
*
*   Running LibreOffice build configuration.
*
********************************************************************

checking build system type... x86_64-unknown-cygwin
checking host system type... x86_64-unknown-cygwin
checking for product name... LibreOfficeDev
checking for package version... 6.1.6.1.0+
checking for product version... 6.1
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for grep... (cached) /usr/bin/grep
checking for GNU Make... C:/cygwin/opt/lo/bin/make
configure: Using a native Win32 GNU Make version.
checking for explicit COMSPEC... found: C:\Windows\system32\cmd.exe
checking for sed... /usr/bin/sed
checking whether to use link-time optimization... no
checking for explicit AFLAGS... no
checking for explicit CFLAGS... no
checking for explicit CXXFLAGS... no
checking for explicit OBJCFLAGS... no
checking for explicit OBJCXXFLAGS... no
checking for explicit LDFLAGS... no
checking whether build target is Release Build... no
checking whether to sign windows build... no
checking for gawk... gawk
checking for gawk... /usr/bin/gawk
checking for bash... /bin/sh
checking for GNU or BSD tar... tar
checking for tar's option to strip components... --strip-components
checking how to build and package galleries... internal src images for desktop
checking whether to build with Java support... yes
checking whether to treat the installation as read-only... no
checking whether to build a 64-bit LibreOffice... yes
checking Visual C++... found: C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\
checking for short pathname of VC product directory... C:/PROGRA~2/MICROS~1/2017/COMMUN~1/VC
checking for UCRT location... found
checking for MSBuild.exe location for: 15.0...
C:/PROGRA~2/MICROS~1/2017/COMMUN~1/VC/../MSBuild/15.0/Bin/amd64
checking cl.exe... found Visual C++ 2017
(C:/PROGRA~2/MICROS~1/2017/COMMUN~1/VC/Tools/MSVC/1416~1.270/bin/HostX64/x64/cl.exe)
checking whether the compiler is actually Clang... no
checking the dependency generation prefix (cl.exe -showIncludes)... "Hinweis: Einlesen der Datei:"
checking whether to build with additional debug utilities... no
checking whether to do a debug build... yes
checking whether to use selective debuginfo... no, for all
checking whether to generate debug information... yes
checking whether to compile with optimization flags... no
checking which package format to use... none
checking syslog.h usability... no
checking syslog.h presence... no
checking for syslog.h... no
checking whether to turn warnings to errors... no
checking whether to have assert() failures abort even without --enable-debug... no
checking whether to enable CUPS support... no
checking whether we want to fetch tarballs... yes, if we use them
checking whether to build help... no
checking whether to include MySpell dictionaries... no
checking whether to use dicts from external paths... no
checking whether to enable pch feature... yes
checking the GNU Make version... C:/cygwin/opt/lo/bin/make 4.2.1
checking whether GNU Make supports the 'file' function... yes
checking for --hash-style gcc linker support... no
checking for perl... /usr/bin/perl
checking the Perl version... Perl 5
checking for required Perl modules... all modules found
checking for Windows SDK... configure: error: Some (all?) Windows SDK files not found, please check
if all needed parts of
the  Windows SDK are installed.
Error running configure at /cygdrive/d/sources/libo-61/autogen.sh line 289.