Add Eigen library to NDK

[Eduardo Santamaría Vázquez]

Hi!

I'm triying to add Eigen library to my Andorid Projects to do some linear
algebra operations. This library doesn't need to be compiled, just include
the headers so I thought it would be easy, but i can't do it. I've been
looking for information on this topic, but there isn't too much. I've
tried to copy the folder with the headers in the NDK folder
(..\Android\Sdk\ndk-bundle\sysroot\usr\include) buy it didn't work (Android
Studio don't detect the fodler). How can i do it?

Thank you in advance!

[Kenneth Geisshirt]

Hey Eduardo,

Do you plan to access the matrices from Java or only using it in your C++
code?

In Android Studio you can add support for C++ code in a project (see
https://groups.google.com/forum/#!topic/android-ndk/3kAhx15wUXs), and then
you can copy Eigen into your app's source code.

- Kenneth

On Thu, Jan 18, 2018 at 4:39 PM Eduardo Santamaría Vázquez <

Post by Eduardo Santamaría Vázquez
Hi!
I'm triying to add Eigen library to my Andorid Projects to do some linear
algebra operations. This library doesn't need to be compiled, just include
the headers so I thought it would be easy, but i can't do it. I've been
looking for information on this topic, but there isn't too much. I've
tried to copy the folder with the headers in the NDK folder
(..\Android\Sdk\ndk-bundle\sysroot\usr\include) buy it didn't work (Android
Studio don't detect the fodler). How can i do it?
Thank you in advance!
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[Alex Cohn]

Well, modifying the NDK directories is not a particularly good idea. You
are supposed to add the Eigen directory to your project (Android.mk or
CMakeLists.txt, depending on your build tools). But an experiment shows
that Android Studio finds the file sysroot\usr\include\q\qq.h, if it is
included as #include "q/qqq.h".

BR,
Alex

On Thursday, January 18, 2018 at 5:39:32 PM UTC+2, Eduardo Santamaría

Post by Eduardo Santamaría Vázquez
Hi!
I'm triying to add Eigen library to my Andorid Projects to do some linear
algebra operations. This library doesn't need to be compiled, just include
the headers so I thought it would be easy, but i can't do it. I've been
looking for information on this topic, but there isn't too much. I've
tried to copy the folder with the headers in the NDK folder
(..\Android\Sdk\ndk-bundle\sysroot\usr\include) buy it didn't work (Android
Studio don't detect the fodler). How can i do it?
Thank you in advance!

[Kenneth Geisshirt]

Hi again,

I have created https://github.com/kneth/EigenDemo to show how you can add
Eigen to your app. I am using git submodule to pull Eigen into the app.

- Kenneth

On Thursday, January 18, 2018 at 4:39:32 PM UTC+1, Eduardo Santamaría

Post by Eduardo Santamaría Vázquez
Hi!
I'm triying to add Eigen library to my Andorid Projects to do some linear
algebra operations. This library doesn't need to be compiled, just include
the headers so I thought it would be easy, but i can't do it. I've been
looking for information on this topic, but there isn't too much. I've
tried to copy the folder with the headers in the NDK folder
(..\Android\Sdk\ndk-bundle\sysroot\usr\include) buy it didn't work (Android
Studio don't detect the fodler). How can i do it?
Thank you in advance!