Cross compiling Couchbase Lite Core for Android armv7 fails

Mobile
1

Hi,

I am trying to cross compile CBL core for Android armv7 so far unsuccessfully. I have tried on MacOS as well as Debian and Ubuntu and get the same issues. I have included a short excerpt below. I have been through the docs including the expanded build docs on the wiki and this should be straightforward so I’m sure there is something basic I have missed somewhere.

[ 28%] Building CXX object CMakeFiles/LiteCoreStatic.dir/LiteCore/Database/Database.cc.o [ 28%] Building CXX object vendor/fleece/CMakeFiles/FleeceStatic.dir/Fleece/API_Impl/Fleece.cc.o In file included from /home/patrick/development/couchbase-lite-core/vendor/fleece/Fleece/API_Impl/Fleece.cc:19: In file included from /home/patrick/development/couchbase-lite-core/vendor/fleece/Fleece/API_Impl/Fleece+ImplGlue.hh:20: In file included from /home/patrick/development/couchbase-lite-core/vendor/fleece/Fleece/Core/FleeceImpl.hh:25: /home/patrick/development/couchbase-lite-core/vendor/fleece/Fleece/Core/Value.hh:55:20: error: default initialization of an object of const type 'const fleece::impl::Null' without a user-provided default constructor constexpr Null nullValue; ^ {} In file included from /home/patrick/development/couchbase-lite-core/LiteCore/Database/Database.cc:27: In file included from /home/patrick/development/couchbase-lite-core/vendor/fleece/Fleece/Core/FleeceImpl.hh:25: /home/patrick/development/couchbase-lite-core/vendor/fleece/Fleece/Core/Value.hh:55:20: error: default initialization of an object of const type 'const fleece::impl::Null' without a user-provided default constructor constexpr Null nullValue;

2

Did you try running the build_android.sh included in the couchbase-lite-core repo under build_cmake/scripts ?

3

Thanks for the very quick response. Yes I did.

4

This script always works for me, the one caveat is that I have to provide the ANDROID_NDK_ROOT variable first. For example:

ANDROID_NDK_ROOT=/Users/borrrden/Library/Developer/Xamarin/android-ndk/android-ndk-r15c/ bash ./build_android.sh

5

Same here. I was originally using NDK release 11c as thats what we use here, but I have also tried the latest NDK.

6

Try using 15c since it is known to work and NDK releases are extremely volatile. Also clean the build directory created between each build.

7

It works with 15c! Many thanks for your help and getting me sorted so quickly, awesome job. :smiley:

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