New Windows 10 build system so might be due to tool versions.
Any tips on how to diagnose this?
"The build of 'C:\Development\wsbuild64\CMakeFiles\470a6095470174e9ce53bf13b7d8b057\developer_guide_chm.rule' depends on 'C:\DEVELOPMENT\WSBUILD64\DOCBOOK\DEVELOPER-GUIDE.CHM' which is produced by the build of 'C:\Development\wsbuild64\CMakeFiles\f552b4b7ccfbf74b38fc77eac37cc368\developer-guide.chm.rule'. The items cannot be built in parallel."
"The build of 'C:\Development\wsbuild64\CMakeFiles\470a6095470174e9ce53bf13b7d8b057\user_guide_chm.rule' depends on 'C:\DEVELOPMENT\WSBUILD64\DOCBOOK\USER-GUIDE.CHM' which is produced by the build of 'C:\Development\wsbuild64\CMakeFiles\f552b4b7ccfbf74b38fc77eac37cc368\user-guide.chm.rule'. The items cannot be built in parallel."
<snip>
Build succeeded.
"C:\Development\wsbuild64\docbook\all_guides.vcxproj" (default target) (1) ->
"C:\Development\wsbuild64\docbook\developer_guides.vcxproj" (default target) (3) ->
"C:\Development\wsbuild64\docbook\developer_guide_chm.vcxproj" (default target) (4) ->
(CustomBuild target) ->
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(238,5): warning MSB8065: Custom build for item "C:\Development\wsbuild64\CMakeFiles\f552b4b7ccfbf74b38fc77eac37cc368\developer-guide.chm.rule" succeeded, but specified output "c:\development\wsbuild64\docbook\developer-guide.chm" has not been created. This may cause incremental build to work incorrectly. [C:\Development\wsbuild64\docbook\developer_guide_chm.vcxproj]
"C:\Development\wsbuild64\docbook\all_guides.vcxproj" (default target) (1) ->
"C:\Development\wsbuild64\docbook\user_guides.vcxproj" (default target) (10) ->
"C:\Development\wsbuild64\docbook\user_guide_chm.vcxproj" (default target) (11) ->
C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(238,5): warning MSB8065: Custom build for item "C:\Development\wsbuild64\CMakeFiles\f552b4b7ccfbf74b38fc77eac37cc368\user-guide.chm.rule" succeeded, but specified output "c:\development\wsbuild64\docbook\user-guide.chm" has not been created. This may cause incremental build to work incorrectly. [C:\Development\wsbuild64\docbook\user_guide_chm.vcxproj]
2 Warning(s)
0 Error(s)
Time Elapsed 00:00:05.45