RELEASE.TXT is not in my NDK

[renaudfavier]

Added by @kneth: When we upgrade to NDK >= r11, we will have to find another method to validate NDK version.

Goal

I'm just trying to make the example projects work.
I've cloned the entire example repo so I executed ./graddlew assemble, He told me that i needed the NDK and its environment variable. So I downloaded this ndk and set the NDK_HOME to the correct location.
=> new error : "The path provided in the NDK_HOME environment variable does not seem to be an Android NDK."

So I looked a bit in your code and found :

if (!file("${ndkDir}/RELEASE.TXT").file) {
        throw new GradleException('The path provided in the NDK_HOME environment variable does not seem to be an Android NDK.')
}

(here : https://github.com/realm/realm-java/blob/master/realm/realm-jni/build.gradle line 130)

well my ndk does not have this file indeed, I have the feeling that it was there on previous versions of NDK and that's what is the problem so I posted this issue.

Thanks,

#### Version of Realm and tooling
Realm version(s): just the examples

Android Studio version: 2.1

Which Android version and device: -

[Zhuinden]

I'm not a Realm person so don't be surprised by my statement, but you should try putting that TXT there just so it would find the file and proceed.

[beeender]

currently compiling Realm requires ndk r10e , so please just install that version.

The later NDK seems not have the RELEASE.txt, we need to figure out the other way to check the ndk version.

[kneth]

See also android/ndk#40

[renaudfavier]

Ok I see, thanks for answering this fast.

[kneth]

@renaudfavier You can argue that you have filed a bug report before it happens :-) I mean, when we upgrade to a newer NDK, this will happen. And we will have to deal with it.

[emanuelez]

Just for future reference: in newer NDKs the version is contained in the source.properties file, but it appears in another format. This is r12 for example:

$ cat source.properties
Pkg.Desc = Android NDK
Pkg.Revision = 12.0.2931149

[beeender]

i am not quite sure if 2931149 changes, will lto linking fail :(

[renaudfavier]

Aha yes one can see it like that !

I take the occasion to ask you about the immediate next problem I had with the same /gradlew assemble :

A problem occurred evaluating project ':realm-library'.
> failed to find Build Tools revision 24.0.0

My ANDROID_HOME points well to my Sdk which has build-tools/24.0.0-preview and build-tools/24.0.1 but no 24.0.0

[Zhuinden]

@renaudfavier you'll need to install Build Tools 24 from the (Stand-Alone) SDK Manager

[renaudfavier]

@Zhuinden Yes what I was trying to say is that I don't think 24.0.0 exists, if i ./tools/android list sdk -a | grep Build-tools in my Sdk here is the output :

   4- Android SDK Build-tools, revision 24.0.1
   5- Android SDK Build-tools, revision 24
   6- Android SDK Build-tools, revision 23.0.3

and revision 24 points to 24.0.0-preview
all my builds tools are up to date, sdk manager see them as so.

I think this might be the problem because this is the first time I see a "-preview"

[zaki50]

fixed by #3316