Android NDK: Including boost c++ library

Question

I am trying to use a boost library inside my android application, using the NDK. I have found a couple of success stories here and here, but I can't say the same about me. I am specifically trying to use the library in this link, as well as the boost thread library. In the code below, I am only trying to include the thread library, not the math library. The process I used to build the boost libraries is pretty much the same as the first link I attached.

So far, it seems I have successfully built the boost libraries, but when I run ndk-build, I get the following error:

Prebuilt       : libboost_thread.a <= <NDK>/sources/ cp: omitting directory `path/to/ndk/sources/boost' make: *** [obj/local/armeabi/libboost_thread.a] Error 1 

Obviously the cp: omitting directory... is not exactly an error. But the only thing I'm getting other than that is the next line, which doesn't really mean anything. Error 1

Here's my Android.mk file:

LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_STATIC_LIBRARIES := boost_thread LOCAL_LDLIBS := lboost_system-gcc-md lboost_thread-gcc-md -lgnustl_static LOCAL_LDLIBS += lboost_system-gcc-md lboost_thread-gcc-md \          -L$(NDK_ROOT)/sources/cxx-stl/gnu-libstdc++/libs/armeabi \          -lgnustl_static   LOCAL_SRC_FILES := #cpp_sources LOCAL_MODULE := com_example_ndkFile_CppMethods include $(BUILD_SHARED_LIBRARY) $(call import-module,boost)  

And there's also an Android.mk file in path/to/ndk/sources/boost/:

LOCAL_PATH:= $(call my-dir)   include $(CLEAR_VARS)   LOCAL_MODULE:= boost_thread LOCAL_SRC_FILES:= android/lib/libboost_thread.a   LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)   include $(PREBUILT_STATIC_LIBRARY) 

And my humble Application.mk file:

APP_ABI := armeabi armeabi-v7a APP_STL := gnustl_static APP_CPPFLAGS = -fexceptions   

I built the boost libraries using bjam. All of the libboost_###.a files are in the sources/boost/android/lib folder.

What is the error I'm getting?

Answer 1

I built the boost libraries using Boost-for-Android. Then I have in my boost/include/lib directory the android makefile boost.mk

LOCAL_PATH := $(call my-dir)  # boost_date_time # include $(CLEAR_VARS) LOCAL_MODULE := boost_date_time LOCAL_SRC_FILES := libboost_date_time-gcc-mt-1_53.a include $(PREBUILT_STATIC_LIBRARY)  # boost_filesystem # include $(CLEAR_VARS) LOCAL_MODULE := boost_filesystem LOCAL_SRC_FILES := libboost_filesystem-gcc-mt-1_53.a include $(PREBUILT_STATIC_LIBRARY)  # boost_thread # include $(CLEAR_VARS) LOCAL_MODULE := boost_thread LOCAL_SRC_FILES := libboost_thread-gcc-mt-1_53.a include $(PREBUILT_STATIC_LIBRARY)  # boost_system # include $(CLEAR_VARS) LOCAL_MODULE := boost_system LOCAL_SRC_FILES := libboost_system-gcc-mt-1_53.a include $(PREBUILT_STATIC_LIBRARY)  # boost_program_options # include $(CLEAR_VARS) LOCAL_MODULE := boost_program_options LOCAL_SRC_FILES := libboost_program_options-gcc-mt-1_53.a include $(PREBUILT_STATIC_LIBRARY)  # boost_chrono # include $(CLEAR_VARS) LOCAL_MODULE := boost_chrono LOCAL_SRC_FILES := libboost_chrono-gcc-mt-1_53.a include $(PREBUILT_STATIC_LIBRARY) 

and my module where i use some of the boost libraries looks like this

LOCAL_PATH := $(call my-dir)  # SignalServer, executable  # include $(CLEAR_VARS) LOCAL_CFLAGS           := -DTIXML_USE_TICPP #LOCAL_CFLAGS           += -DDEBUG LOCAL_STATIC_LIBRARIES := boost_thread \     boost_system \     boost_filesystem \     boost_program_options \     boost_chrono \ LOCAL_STATIC_LIBRARIES += ticpp \     tia \     tobicore \     tobiid \     tid \     gdf LOCAL_MODULE           := signalserver LOCAL_C_INCLUDES       := $(LOCAL_PATH)/include LOCAL_C_INCLUDES       += $(LOCAL_PATH)/extern/include LOCAL_C_INCLUDES       += $(LOCAL_PATH)/../boost/include/boost-1_53 LOCAL_SRC_FILES        := #cpp source  include $(BUILD_EXECUTABLE) 

in addition I have an Android.mk where all subdir makefiles are listed

TOP_PATH := $(call my-dir)  include $(TOP_PATH)/boost/lib/boost.mk include $(TOP_PATH)/signalserver/signalserver.mk . . 

and my Application.mk:

APP_PLATFORM          := android-14 APP_ABI               := armeabi-v7a #APP_OPTIM             := debug #NDK_DEBUG             := 1  NDK_TOOLCHAIN_VERSION := 4.6 APP_STL               := gnustl_static APP_CPPFLAGS          := -fexceptions -frtti