Android.mk

[newnon]

Android.mk for android builds

[vitaut]

Thanks for the contribution. Would you mind adding a few sentences on how to use this stuff to the Usage section of the docs? I guess Android developers should now this, so there is no need to go into much details, but it might be useful at least to give this more visibility.

[newnon]

Yes yo can add info to use you library under Android developer just need to add few lines to their Android.mk
first add
LOCAL_WHOLE_STATIC_LIBRARIES += cppformat_static
second
$(call import-module,{relative path to to cppformat}cppformat)
for me it was $(call import-module,../../cppformat)
and then just normally write in any place #include "format.h"

[vitaut]

Could you please elaborate a bit or give an example. I've copied cppformat to NDK samples and tried to adapt one of them to use the library, but cannot get it to work:

$ ndk-build
Android NDK: .../android-ndk-r10d/samples/test-libstdc++/jni/Android.mk: Cannot find module with tag '../../cppformat' in import path
Android NDK: Are you sure your NDK_MODULE_PATH variable is properly defined ?

Setting NDK_MODULE_PATH gives another error:

$ NDK_MODULE_PATH=`pwd` ndk-build
Android NDK: Trying to define local module 'test-libstl' in .../android-ndk-r10d/samples/test-libstdc++/jni/./Android.mk.    
Android NDK: But this module was already defined by .../android-ndk-r10d/samples/test-libstdc++/jni/./Android.mk.

Here's the Andorid.mk file that I use:

LOCAL_WHOLE_STATIC_LIBRARIES += cppformat_static
$(call import-module,../../cppformat)

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_MODULE := test-libstl
LOCAL_SRC_FILES := test-libstl.cpp
include $(BUILD_EXECUTABLE)

Sorry for naive questions, I haven't used NDK before.

[newnon]

Here is mine

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE := game_shared
LOCAL_MODULE_FILENAME := libgame
LOCAL_SRC_FILES := hellocpp/main.cpp
LOCAL_WHOLE_STATIC_LIBRARIES := cppformat_static
include $(BUILD_SHARED_LIBRARY)

$(call import-module,.)
$(call import-module,../../cppformat)

$(call import-module,../../cppformat) must be relative to jni folder

"Are you sure your NDK_MODULE_PATH variable is properly defined" - it look like you path is wrong
P.S i'm not sure but may be string order?

P.P.S
my folder structure

Game
    cppformat
    proj.android
        jni

[vitaut]

I've created a small repository that contains an example of using cppformat with Android NDK: https://github.com/cppformat/android-ndk-example

Unfortunately it doesn't work yet - I get various errors when trying to build it. Could you by any chance have a look at it and tell me what I'm doing wrong? Since you have much more experience in Android development, you'll probably see what's wrong straight away while it will take me ages to figure it out. I'm using this script for building which simply runs ndk-build, but can be extended to set any environment variables (NDK_MODULE_PATH?) if needed.

Thanks!

[newnon]

Fixed small bug in Android.mk
and full working demo here https://github.com/newnon/android-ndk-example.git

[vitaut]

Awesome, thanks!