Updated OpenJFX build instructions

[Kevin Rushforth]

Thanks for the feedback...I'll note it.

As for the build failure, did you install Visual Studio 2017 and set the 
two env variables (VS150COMNTOOLS and MSVC_VER) to point to it? If so, 
then it should determine WINSDK_DIR without anything else needed.

-- Kevin


Nir Lisker wrote:
> Thanks Kevin,
>
> I'm going through the process now on Win 10.
>
> A few things to note:
> - In the Platform Prerequisites/cygwin it says to make sure mercurial 
> package is installed. Later, under Common Prerequisites/Mercurial it 
> says "you can also install Mercurial as a cygwin package". It's not 
> clear then if it's needed or optional and if it replaces or 
> complements the other hg toolings.
> - The link to Tortoise should be https://tortoisehg.bitbucket.io (not 
> .org).
> - Might be trivial but I would say it's worth noting that all commands 
> listed there are to be ran in cygwin.
> - The hg clone command probably needs to have a note added about the 
> destination folder.
>
> The problems starts after navigating to the /rt directory and 
> executing 'gradle tasks' or `gradle projects`:
>
> $ gradle tasks
> :buildSrc:generateGrammarSource
> A problem was found with the configuration of task 
> ':buildSrc:generateGrammarSource'. Registering invalid inputs and 
> outputs via TaskInputs and TaskOutputs methods has been deprecated and 
> is scheduled to be removed in Gradle 5.0.
>  - Directory 'D:\rt\buildSrc\src\main\antlr' specified for property 
> '$1' does not exist.
> :buildSrc:generateGrammarSource UP-TO-DATE
> :buildSrc:compileJava NO-SOURCE
> :buildSrc:compileGroovy UP-TO-DATE
> :buildSrc:processResources NO-SOURCE
> :buildSrc:classes UP-TO-DATE
> :buildSrc:jar UP-TO-DATE
> :buildSrc:assemble UP-TO-DATE
> :buildSrc:compileTestJava NO-SOURCE
> :buildSrc:compileTestGroovy NO-SOURCE
> :buildSrc:processTestResources NO-SOURCE
> :buildSrc:testClasses UP-TO-DATE
> :buildSrc:test NO-SOURCE
> :buildSrc:check UP-TO-DATE
> :buildSrc:build UP-TO-DATE
>
> FAILURE: Build failed with an exception.
>
> * Where:
> Script 'D:\rt\buildSrc\win.gradle' line: 93
>
> * What went wrong:
> A problem occurred evaluating script.
> > FAIL: WINSDK_DIR not defined
>
> * Try:
> Run with --stacktrace option to get the stack trace. Run with --info 
> or --debug option to get more log output.
>
> * Get more help at https://help.gradle.org
>
> BUILD FAILED in 2s
>
> ---
>
> I did not install DirectX SDK. Also the output of the above commands 
> in the instructions page seems out of date compared to the contents of 
> the directory... or I messed up.
>
> Any ideas?
>
>  
>
>     I did a first pass over the build instructions on the OpenJFX Wiki
>     [1].
>     I think I cleaned up the worst of the inaccuracies, and added some
>     information that will make it easier to build.
>
>     I'm not the best person to see whether anything important is missing,
>     though. Someone less familiar with the build should look it over
>     and let
>     me know what I've missed. I won't be able to get back to this until
>     after the holidays and after JDK 10 RDP1 is over, but will take
>     another
>     pass at it then and incorporate the feedback.
>
>     -- Kevin
>
>     [1] https://wiki.openjdk.java.net/display/OpenJFX/Building+OpenJFX
>     <https://wiki.openjdk.java.net/display/OpenJFX/Building+OpenJFX>
>