[CMake] Fwd: Add_Custom_Target to copy a directory not working with Ninja on Windows

[Michael Jackson]

Tried a few different ideas:
 First, I pulled the latest Ninja sources and built those. No luck, Still
Failed.
Next, I removed the manually added dependencies of the copy target on the
application being built. Still Failed.
Ran ninja with only a single thread (ninja -j1) AND IT WORKED!

So I'll just assume that there is a threading issue between CMake and Ninja.

I ran the same command from the command line and that worked just fine so
it must be something in how ninja is trying to do the copy. Unfortunately
there does not seem to be any failure log anywhere to get a better idea of
_why_ it is failing.


---------- Forwarded message ----------
From: Michael Jackson <mike.jackson at bluequartz.net>
Date: Thu, Oct 2, 2014 at 5:57 PM
Subject: Add_Custom_Target to copy a directory not working with Ninja on
Windows
To: "cmake at cmake.org" <cmake at cmake.org>


Setup: Visual Studio 2013 Express, Ninja Version 1.5.1.git, Windows 7x64,
CMake 3.0.1

I am trying to build my project and when ninja gets to the point of copying
a directory it fails most of the time. Sometimes (I think on a clean build)
it works. Always fails when I am running the "ninja package'. Here is the
cmake code that I use.

#-------------------------------------------------------------------------------
#- This copies all the Prebuilt Pipeline files into the Build directory so
the help
#- works from the Build Tree
add_custom_target(PrebuiltPipelinesCopy ALL
            COMMAND ${CMAKE_COMMAND} -E copy_directory
${DREAM3D_SUPPORT_DIR}/PrebuiltPipelines

${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${CMAKE_CFG_INTDIR}/PrebuiltPipelines/
            COMMENT "Copying Prebuilt Pipelines into Binary Directory")
set_target_properties(PrebuiltPipelinesCopy PROPERTIES FOLDER ZZ_COPY_FILES)

# Make Sure this target as part of the DREAM3D Build
add_dependencies(DREAM3D PrebuiltPipelinesCopy)

#- This installs all the help files. Note that we assume a flat directory
structure
#- in the "Help" folder, ie, all html files, images, etc are all in the
"Help"
#- folder and NOT in any subfolders beyond that.
install(DIRECTORY ${DREAM3D_SUPPORT_DIR}/PrebuiltPipelines
        DESTINATION .
        COMPONENT Applications )

I can not figure out what is going wrong. Visual Studio will sometimes fail
also. Has anyone encountered this before?


Thanks
_________________________________________________________
Mike Jackson                  mike.jackson at bluequartz.net
BlueQuartz Software                    www.bluequartz.net
Principal Software Engineer                  Dayton, Ohio
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