Fix linking of 64 bit artifacts in 32 bit Windows build with VS2015

In some 64bit Windows environments we get the link error while building
libraries for 64-bit Explorer extensions.
This patch will fix this error.

This error occours only when we build 32bit LibreOffice on 64bit Windows
with Visual Studio 2015.

In some environments UCRT SDK directory does not match Windows SDK
directory.
In that case UCRT library's directory path is incorrect at the linking
phase.

Change-Id: I245b1a70f5e1137a8840aa2e7a70f521eab18cb3
Reviewed-on: https://gerrit.libreoffice.org/23982Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>

config_host.mk.in

@@ -594,6 +594,8 @@ export TLS=@TLS@
 export TMPDIR=@TEMP_DIRECTORY@
 export TOUCH=@TOUCH@
 export TYPO_EXTENSION_PACK=@TYPO_EXTENSION_PACK@
+export UCRTSDKDIR=@UCRTSDKDIR@
+export UCRTVERSION=@UCRTVERSION@
 export UNOWINREG_DLL=@UNOWINREG_DLL@
 export USE_LIBRARY_BIN_TAR=@USE_LIBRARY_BIN_TAR@
 export USE_XINERAMA=@USE_XINERAMA@

configure.ac

@@ -3322,15 +3322,16 @@ find_ucrt()
 {
     reg_get_value_32 "HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Microsoft SDKs/Windows/v10.0/InstallationFolder"
     if test -n "$regvalue"; then
-        ucrttest=$regvalue
+        PathFormat "$regvalue"
+        UCRTSDKDIR=$formatted_path
         reg_get_value_32 "HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Microsoft SDKs/Windows/v10.0/ProductVersion"
-        ucrtdir=$regvalue
+        UCRTVERSION=$regvalue
     fi
-    if test -z "$ucrttest"; then
+    if test -z "$UCRTSDKDIR"; then
         if test -f "$VC_PRODUCT_DIR/../Common7/Tools/vsvars32.bat"; then
             PathFormat "`win_get_env_from_vsvars32bat "UniversalCRTSdkDir"`"
-            ucrttest=$formatted_path
-            ucrtdir=`win_get_env_from_vsvars32bat "UCRTVersion"`
+            UCRTSDKDIR=$formatted_path
+            UCRTVERSION=`win_get_env_from_vsvars32bat "UCRTVersion"`
         fi
     fi
 }
@@ -3421,6 +3422,9 @@ if test "$_os" = "WINNT"; then
             AC_MSG_RESULT([No])
         fi
 
+        UCRTSDKDIR=
+        UCRTVERSION=
+
         AC_MSG_CHECKING([whether UCRT is needed for this compiler version])
         if test "$vcnum" = "120"; then
             AC_MSG_RESULT([No])
@@ -3428,10 +3432,10 @@ if test "$_os" = "WINNT"; then
             AC_MSG_RESULT([Yes])
             AC_MSG_CHECKING([for UCRT location])
             find_ucrt
-            if test -n "$ucrttest"; then
+            if test -n "$UCRTSDKDIR"; then
                 AC_MSG_RESULT([found])
-                PathFormat "$ucrttest"
-                ucrtincpath_formatted="${formatted_path}Include/$ucrtdir/ucrt"
+                PathFormat "${UCRTSDKDIR}Include/$UCRTVERSION/ucrt"
+                ucrtincpath_formatted=$formatted_path
                 # SOLARINC is used for external modules and must be set too.
                 # And no, it's not sufficient to set SOLARINC only, as configure
                 # itself doesn't honour it.
@@ -3443,6 +3447,8 @@ if test "$_os" = "WINNT"; then
                 AC_MSG_ERROR([not found])
             fi
         fi
+        AC_SUBST(UCRTSDKDIR)
+        AC_SUBST(UCRTVERSION)
 
         # Find the proper version of MSBuild.exe to use based on the VS version
         reg_get_value_32 HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/MSBuild/$vcnumwithdot/MSBuildOverrideTasksPath
@@ -12532,8 +12538,8 @@ if test "$build_os" = "cygwin"; then
             ILIB1="$ILIB1 -LIBPATH:$WINDOWS_SDK_HOME/lib/$winsdklibsubdir/um/x64"
         fi
         if test $VCVER = 140; then
-            PathFormat "$ucrttest"
-            ucrtlibpath_formatted="${formatted_path}lib/$ucrtdir/ucrt/x64"
+            PathFormat "${UCRTSDKDIR}lib/$UCRTVERSION/ucrt/x64"
+            ucrtlibpath_formatted=$formatted_path
             ILIB="$ILIB;$ucrtlibpath_formatted"
         fi
     else
@@ -12546,8 +12552,8 @@ if test "$build_os" = "cygwin"; then
             ILIB1="$ILIB1 -LIBPATH:$WINDOWS_SDK_HOME/lib/$winsdklibsubdir/um/x86"
         fi
         if test $VCVER = 140; then
-            PathFormat "$ucrttest"
-            ucrtlibpath_formatted="${formatted_path}lib/$ucrtdir/ucrt/x86"
+            PathFormat "${UCRTSDKDIR}lib/$UCRTVERSION/ucrt/x86"
+            ucrtlibpath_formatted=$formatted_path
             ILIB="$ILIB;$ucrtlibpath_formatted"
         fi
     fi

solenv/gbuild/platform/com_MSC_class.mk

@@ -172,7 +172,7 @@ $(call gb_Helper_abbreviate_dirs,\
 			-LIBPATH:$(COMPATH)/lib/amd64 \
 			-LIBPATH:$(WINDOWS_SDK_HOME)/lib/x64 \
 		    $(if $(filter 80 81 10,$(WINDOWS_SDK_VERSION)),-LIBPATH:$(WINDOWS_SDK_HOME)/lib/$(WINDOWS_SDK_LIB_SUBDIR)/um/x64) \
-		    $(if $(filter-out 120,$(VCVER)),-LIBPATH:$(WINDOWS_SDK_HOME)/lib/$(WINDOWS_SDK_LIB_SUBDIR)/ucrt/x64)) \
+		    $(if $(filter-out 120,$(VCVER)),-LIBPATH:$(UCRTSDKDIR)lib/$(UCRTVERSION)/ucrt/x64)) \
 		$(T_LDFLAGS) \
 		@$${RESPONSEFILE} \
 		$(foreach lib,$(LINKED_LIBS),$(call gb_Library_get_ilibfilename,$(lib))) \