[CMake] Overriding Win-Registry search in UseJNI.cmake

[Oliver Buchtala]

Am 05.04.2011 16:33, schrieb David Cole:
> On Tue, Apr 5, 2011 at 7:16 AM, Oliver Buchtala 
> <oliver.buchtala at jku.at <mailto:oliver.buchtala at jku.at>> wrote:
>
>     Am 05.04.2011 13:12, schrieb Oliver Buchtala:
>
>         Hello,
>
>         I am working with CMake 2.8 and using UseJNI.cmake
>         I have a JDK installed locally (registered in Win-Registry)
>         but want to configure a project to use a different JDK lying
>         on my disk.
>
>         Looking at UseJNI.cmake I find that the environment variable
>         JAVA_HOME could be handy,
>         but unfortunately UseJNI prefers the Windows-Registry entries
>         above all other search paths.
>
>         Did I miss something?
>         Shall I file an issue?
>
>         Oliver
>
>     Sorry, the macro file is called FindJNI.cmake.
>
>
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>
> The only find_* calls I see in FindJNI.cmake are:
>
>   FIND_LIBRARY(JAVA_AWT_LIBRARY jawt
>   FIND_LIBRARY(JAVA_JVM_LIBRARY NAMES jvm JavaVM
>   FIND_PATH(JAVA_INCLUDE_PATH jni.h
>   FIND_PATH(JAVA_INCLUDE_PATH2 jni_md.h
>   FIND_PATH(JAVA_AWT_INCLUDE_PATH jawt.h
>
> If you want to override the default locations to find a specific 
> installation of java stuff, just set those variables in your cache to 
> point to the right stuff before calling find_package(JNI).
>
> For example:
>   set(JAVA_AWT_LIBRARY "/full/path/to/libjawt.a" CACHE FILEPATH "jawt 
> library")
>   find_package(JNI)
>
> If a variable is already set before calling a find_* command, then the 
> find is a no-op and it trusts that you've set it correctly.
>
>
> HTH,
> David
>
Hi David,

ok. I thought it could even be easier ;)
If I disable the win-Registry lookup stuff and set JAVA_HOME 
appropriately then everything is found perfectly.
And if disabling would be just changing the order of search paths this 
would be more control for me and still powerful (i.e., when not using 
JAVA_HOME).
Nevertheless, I can also live with your suggestion...

Thank you,
Oliver

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