fatal error: 'android/log.h' file not found

I have a project using Vuforia. The Android version builds perfectly. I have set up an iOS build on Cloud Build and am getting the following error:

6531: [xcode] In file included from /BUILD_PATH/es3inc.2017jeepcompassarus.default-ios/temp.fXwvwT/Libraries/Plugins/Android/VuforiaMediaSource/jni/SampleUtils.cpp:8:
6532: [xcode] /BUILD_PATH/es3inc.2017jeepcompassarus.default-ios/temp.fXwvwT/Libraries/Plugins/Android/VuforiaMediaSource/jni/SampleUtils.h:13:10: fatal error: 'android/log.h' file not found
6533: [xcode] #include <android/log.h>
6534: [xcode] 1 error generated.

There is no android folder with a file called log.h. Since it's an Android file, I don't understand why an iOS build is attempting to compile it.

I can build the iOS version on my local computer and I don't get this error.

The file SampleUtils.h contains these lines:

#include <stdio.h>
#include <android/log.h>

No error occurs on stdio.h.

 

When you select SampleUtils.h, which platforms are selected in the inspector? Can you post a screenshot?