Including PCL with Android Stduio - android

I built PCL library for Android with
hcteq.wordpress.com/2014/07/14/compiling-pcl-for-android-in-windows-cmake-gui
I tried to include these library in Android Studio with Project github.com/roomplan/tango-examples-java/tree/master/PointCloudJava_with_PCL
To write .mk and .gradle file, I referred
stackoverflow.com/questions/35491012/issue-running-pcl-library-with-android-project
github.com/kalectro/pcl_groovy/blob/master/mobile_apps/android/OpenNIRecorder/jni/Android.mk
Here is my Android.mk
LOCAL_PATH := $(call my-dir)
PROJECT_ROOT_FROM_JNI := ../../../../..
PROJECT_ROOT := $(LOCAL_PATH)/$(PROJECT_ROOT_FROM_JNI)
PCL_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/pcl-android
BOOST_ANDROID_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/boost-android
FLANN_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/flann-android
EIGEN_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/eigen
NDK_TOOLCHAIN_VERSION=4.9
# PCL libraries
PCL_STATIC_LIB_DIR := $(PCL_INCLUDE)/lib
BOOST_STATIC_LIB_DIR := $(BOOST_ANDROID_INCLUDE)/lib
FLANN_STATIC_LIB_DIR := $(FLANN_INCLUDE)/lib
PCL_STATIC_LIBRARIES := pcl_common pcl_geometry pcl_kdtree pcl_octree pcl_sample_consensus pcl_surface \
pcl_features pcl_keypoints pcl_search pcl_tracking pcl_filters pcl_ml \
pcl_registration pcl_segmentation
BOOST_STATIC_LIBRARIES := boost_date_time boost_iostreams boost_regex boost_system \
boost_filesystem boost_program_options boost_signals boost_thread
FLANN_STATIC_LIBRARIES := flann_s flann_cpp_s
define build_pcl_static
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
LOCAL_SRC_FILES:=$(PCL_STATIC_LIB_DIR)/lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
define build_boost_static
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
LOCAL_SRC_FILES:=$(BOOST_STATIC_LIB_DIR)/lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
define build_flann_static
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
LOCAL_SRC_FILES:=$(FLANN_STATIC_LIB_DIR)/lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
$(foreach module,$(PCL_STATIC_LIBRARIES),$(eval $(call build_pcl_static,$(module))))
$(foreach module,$(BOOST_STATIC_LIBRARIES),$(eval $(call build_boost_static,$(module))))
$(foreach module,$(FLANN_STATIC_LIBRARIES),$(eval $(call build_flann_static,$(module))))
# Project and linking
include $(CLEAR_VARS)
LOCAL_MODULE := helloPcl
LOCAL_CFLAGS := -std=gnu++11
LOCAL_C_INCLUDES := $(PCL_INCLUDE)/include/pcl-1.6 \
$(BOOST_ANDROID_INCLUDE)/include \
$(EIGEN_INCLUDE) \
$(FLANN_INCLUDE)/include
LOCAL_LDFLAGS += -L$(PCL_INCLUDE)/lib \
-L$(BOOST_ANDROID_INCLUDE)/lib \
-L$(FLANN_INCLUDE)/lib
LOCAL_SHARED_LIBRARIES += pcl_common pcl_geometry pcl_search pcl_kdtree pcl_octree pcl_sample_consensus \
pcl_surface pcl_features pcl_filters pcl_keypoints pcl_tracking pcl_ml \
pcl_registration pcl_segmentation
LOCAL_SHARED_LIBRARIES += boost_date_time boost_iostreams boost_regex boost_system \
boost_filesystem boost_program_options boost_signals boost_thread
LOCAL_SHARED_LIBRARIES += flann flann_cpp
LOCAL_SRC_FILES := jni_part.cpp \
pcl_lib.cpp
LOCAL_LDLIBS := -lstdc++ -lc -lm -llog -landroid -ldl -lGLESv2 -lEGL \
-lpcl_common -lpcl_geometry -lpcl_search -lpcl_kdtree -lpcl_octree -lpcl_sample_consensus \
-lpcl_surface -lpcl_features -lpcl_filters -lpcl_keypoints -lpcl_tracking -lpcl_ml \
-lpcl_registration -lpcl_segmentation \
-lflann -lflann_cpp
LOCAL_CFLAGS += -mfloat-abi=softfp -mfpu=neon -march=armv7 -mthumb -O3
include $(BUILD_SHARED_LIBRARY)
Application.mk
APP_ABI := armeabi-v7a
APP_PLATFORM := android-19
#APP_STL := stlport_static
APP_CPPFLAGS := -frtti -fexceptions
APP_STL := gnustl_static
and build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "com.tangoproject.experiments.javapointcloud"
minSdkVersion 19
targetSdkVersion 23
versionCode 1
versionName "1.0"
ndk {
moduleName 'helloPcl'
}
}
sourceSets.main {
jni.srcDirs = [];
jniLibs.srcDir 'src/main/libs'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
task buildNative(type: Exec, description: 'Compile JNI source via NDK') {
def ndkDir = android.ndkDirectory
commandLine "$ndkDir/ndk-build.cmd",
'-C', file('src/main/jni').absolutePath, // Change src/main/jni the relative path to your jni source
'-j', Runtime.runtime.availableProcessors(),
'all',
'NDK_DEBUG=1'
}
task cleanNative(type: Exec, description: 'Clean JNI object files') {
def ndkDir = android.ndkDirectory
commandLine "$ndkDir/ndk-build.cmd",
'-C', file('src/main/jni').absolutePath, // Change src/main/jni the relative path to your jni source
'clean'
}
clean.dependsOn 'cleanNative'
tasks.withType(JavaCompile) {
compileTask -> compileTask.dependsOn buildNative
}
dependencies {
compile project(':tangoUtils')
compile files('libs/tango_java_lib.jar')
}
it seems that I have successfully linked the library for .cpp files, but there are errors show like this link
Does anyone know how to resolve this problem? Thanks.
PS There is similar question on Point Cloud Library (PCL) Users mailing list(www.pcl-users.org/Undefined-reference-to-PCDWrite-and-PCDWriteASCII-td4043323.html), but still no answer.
PS2 Or anyone can provide some instructions for using PCL in Android Studio?
Edit
I modified my Android.mk file here
LOCAL_PATH := $(call my-dir)
PROJECT_ROOT_FROM_JNI := ../../../../..
PROJECT_ROOT := $(LOCAL_PATH)/$(PROJECT_ROOT_FROM_JNI)
PCL_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/pcl-android
BOOST_ANDROID_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/boost-android
FLANN_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/flann-android
EIGEN_INCLUDE := $(LOCAL_PATH)/../../../../../PCL/eigen
NDK_TOOLCHAIN_VERSION=4.9
# PCL libraries
PCL_STATIC_LIB_DIR := $(PCL_INCLUDE)/lib
BOOST_STATIC_LIB_DIR := $(BOOST_ANDROID_INCLUDE)/lib
FLANN_STATIC_LIB_DIR := $(FLANN_INCLUDE)/lib
PCL_STATIC_LIBRARIES := pcl_common pcl_geometry pcl_kdtree pcl_octree pcl_sample_consensus pcl_surface \
pcl_features pcl_keypoints pcl_search pcl_tracking pcl_filters pcl_ml \
pcl_registration pcl_segmentation pcl_io pcl_io_ply pcl_recognition
BOOST_STATIC_LIBRARIES := boost_date_time boost_iostreams boost_regex boost_system \
boost_filesystem boost_program_options boost_signals boost_thread
FLANN_STATIC_LIBRARIES := flann_s flann_cpp_s
define build_pcl_static
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
LOCAL_SRC_FILES:=$(PCL_STATIC_LIB_DIR)/lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
define build_boost_static
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
LOCAL_SRC_FILES:=$(BOOST_STATIC_LIB_DIR)/lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
define build_flann_static
include $(CLEAR_VARS)
LOCAL_MODULE:=$1
LOCAL_SRC_FILES:=$(FLANN_STATIC_LIB_DIR)/lib$1.a
include $(PREBUILT_STATIC_LIBRARY)
endef
$(foreach module,$(PCL_STATIC_LIBRARIES),$(eval $(call build_pcl_static,$(module))))
$(foreach module,$(BOOST_STATIC_LIBRARIES),$(eval $(call build_boost_static,$(module))))
$(foreach module,$(FLANN_STATIC_LIBRARIES),$(eval $(call build_flann_static,$(module))))
# Project and linking
include $(CLEAR_VARS)
LOCAL_MODULE := helloPcl
LOCAL_CFLAGS := -std=gnu++11
LOCAL_SRC_FILES := jni_part.cpp \ pcl_lib.cpp
#pcl library
LOCAL_LDFLAGS += -L$(PCL_INCLUDE)/lib \
-L$(BOOST_ANDROID_INCLUDE)/lib \
-L$(FLANN_INCLUDE)/lib
LOCAL_C_INCLUDES += $(PCL_INCLUDE)/include/pcl-1.6 \
$(BOOST_ANDROID_INCLUDE)/include \
$(EIGEN_INCLUDE) \
$(FLANN_INCLUDE)/include
LOCAL_STATIC_LIBRARIES += pcl_common pcl_geometry pcl_kdtree pcl_octree pcl_sample_consensus \
pcl_surface pcl_features pcl_io pcl_keypoints pcl_recognition \
pcl_search pcl_tracking pcl_filters pcl_io_ply pcl_ml \
pcl_registration pcl_segmentation
LOCAL_STATIC_LIBRARIES += boost_date_time boost_iostreams boost_regex boost_system \
boost_filesystem boost_program_options boost_signals \
boost_thread
LOCAL_SHARED_LIBRARIES := tango_client_api tango_support_api
LOCAL_SHARED_LIBRARIES += flann flann_cpp
LOCAL_CFLAGS += -mfloat-abi=softfp -mfpu=neon -march=armv7 -mthumb -O3
LOCAL_ALLOW_UNDEFINED_SYMBOLS := true
include $(BUILD_SHARED_LIBRARY)
$(call import-add-path,$(PROJECT_ROOT))
$(call import-module,tango_client_api)
$(call import-module,tango_support_api)
and now there are different error
D:/Lab/senior/PCL/PointCloudJava_with_PCL_1/pointCloudJava_with_PCL/src/main/jni/../../../../../PCL/pcl-android/lib/libpcl_io.a(pcd_io.cpp.o):pcd_io.cpp:function pcl::PCDWriter::writeBinary(std::string const&, sensor_msgs::PointCloud2 const&, Eigen::Matrix<float, 4, 1, 0, 4, 1> const&, Eigen::Quaternion<float, 0> const&): error: undefined reference to '__page_size'
D:/Lab/senior/PCL/PointCloudJava_with_PCL_1/pointCloudJava_with_PCL/src/main/jni/../../../../../PCL/pcl-android/lib/libpcl_io.a(pcd_io.cpp.o):pcd_io.cpp:function pcl::PCDWriter::writeBinaryCompressedEigen(std::string const&, pcl::PointCloud<Eigen::Matrix<float, -1, -1, 0, -1, -1> > const&): error: undefined reference to '__page_size'
D:/Lab/senior/PCL/PointCloudJava_with_PCL_1/pointCloudJava_with_PCL/src/main/jni/../../../../../PCL/pcl-android/lib/libpcl_io.a(pcd_io.cpp.o):pcd_io.cpp:function pcl::PCDWriter::writeBinaryCompressed(std::string const&, sensor_msgs::PointCloud2 const&, Eigen::Matrix<float, 4, 1, 0, 4, 1> const&, Eigen::Quaternion<float, 0> const&): error: undefined reference to '__page_size'
D:/Lab/senior/PCL/PointCloudJava_with_PCL_1/pointCloudJava_with_PCL/src/main/jni/../../../../../PCL/pcl-android/lib/libpcl_io.a(pcd_io.cpp.o):pcd_io.cpp:function pcl::PCDWriter::writeBinaryEigen(std::string const&, pcl::PointCloud<Eigen::Matrix<float, -1, -1, 0, -1, -1> > const&): error: undefined reference to '__page_size'
clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [D:/Lab/senior/PCL/PointCloudJava_with_PCL_1/pointCloudJava_with_PCL/src/main/obj/local/armeabi-v7a/libhelloPcl.so] Error 1
make: Leaving directory `D:/Lab/senior/PCL/PointCloudJava_with_PCL_1/pointCloudJava_with_PCL/src/main/jni'
:pointCloudJava_with_PCL:buildNative FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':pointCloudJava_with_PCL:buildNative'.
> Process 'command 'C:\Users\CAIG\AppData\Local\Android\Sdk\ndk-bundle/ndk-build.cmd'' finished with non-zero exit value 2
If I add the line below in Android.mk, errors will not occur and can compile success
LOCAL_ALLOW_UNDEFINED_SYMBOLS := true
But when run the .apk, Android Monitor shows
java.lang.UnsatisfiedLinkError: dlopen failed: library "libtango_client_api.so" not found

Related

What step(s) am I missing in order to debug native code in Android?

*EDIT June 2020: Unbelievably I came to my own (3 year old) question here from google after trying to help a coworker debug native code in our app on his new mac. AndroidStudio 4.0 with Gradle 6 and debugging native code is still something like sorcery! We have 3 developers, only 1 machine is this working. Same code base, same version of AndroidStudio, all 3 running Catalina. I'm just baffled.
EDIT: This is still unresolved. I suspected based on the comments that my use of an old NDK (10d) might be a problem so I upgraded to 15c and dealt with all the issues to get my stuff to compile with clang and the new c++ library. Unfortunately ndk-gdb is broken in 15c and my attempts to hack the python to make it work didn't get me anywhere. I then used Android Studio 3.0 preview and I'm back to where I was before - I can see stack information but all the code is assembly in lldb. Work must go on - I am back to using logcat for debugging :(
I come to you with a bruised forehead from numerous hits on the wall.
I'll try to be concise and provide all relevant information at the same time. If there is any relevant info I haven't included please let me know.
Synopsis:
I am maintaining an Android app as part of my job. I have had to resort to logging to debug native code because although I can set breakpoints and hit them, I can't view the source or variable information.
I've spent many hours and google searches trying to understand what I'm missing, yet still no luck.
My build environment is OSX using Android NDK r10D, and gradle 3.2 to build the APK.
I'm trying to use AndroidStudio 3.0 beta 6 to install and debug the APK.
My Android.manifest includes in the tag:
android:debuggable="true"
Native Code:
This is sample output from compiling one of the native c++ files with -v for verbosity:
~/src/libraries/cBase$ make android
Building obj/Binary.ao
Using built-in specs.
COLLECT_GCC=arm-linux-androideabi-g++
Target: arm-linux-androideabi
Configured with: /s/ndk-toolchain/src/build/../gcc/gcc-4.8/configure --prefix=/tmp/ndk-User/build/toolchain/prefix --target=arm-linux-androideabi --host=x86_64-apple-darwin --build=x86_64-apple-darwin --with-gnu-as --with-gnu-ld --enable-languages=c,c++ --with-gmp=/tmp/ndk-User/build/toolchain/temp-install --with-mpfr=/tmp/ndk-User/build/toolchain/temp-install --with-mpc=/tmp/ndk-User/build/toolchain/temp-install --with-cloog=/tmp/ndk-User/build/toolchain/temp-install --with-isl=/tmp/ndk-User/build/toolchain/temp-install --with-ppl=/tmp/ndk-User/build/toolchain/temp-install --disable-ppl-version-check --disable-cloog-version-check --disable-isl-version-check --enable-cloog-backend=isl --with-host-libstdcxx='-static-libgcc -lstdc++ -lm' --disable-libssp --enable-threads --disable-nls --disable-libmudflap --disable-libgomp --disable-libstdc__-v3 --disable-sjlj-exceptions --disable-shared --disable-tls --disable-libitm --with-float=soft --with-fpu=vfp --with-arch=armv5te --enable-target-optspace --enable-initfini-array --disable-nls --prefix=/tmp/ndk-User/build/toolchain/prefix --with-sysroot=/tmp/ndk-User/build/toolchain/prefix/sysroot --with-binutils-version=2.24 --with-mpfr-version=3.1.1 --with-mpc-version=1.0.1 --with-gmp-version=5.0.5 --with-gcc-version=4.8 --with-gdb-version=7.6 --with-python=/Users/User/mydroid/ndk/prebuilt/darwin-x86_64/bin/python-config.sh --with-gxx-include-dir=/tmp/ndk-User/build/toolchain/prefix/include/c++/4.8 --with-bugurl=http://source.android.com/source/report-bugs.html --enable-languages=c,c++ --disable-bootstrap --enable-plugins --enable-libgomp --disable-libsanitizer --enable-gold --enable-graphite=yes --with-cloog-version=0.18.0 --with-isl-version=0.11.1 --enable-eh-frame-hdr-for-static --with-arch=armv5te --program-transform-name='s&^&arm-linux-androideabi-&' --enable-gold=default
Thread model: posix
gcc version 4.8 (GCC)
COLLECT_GCC_OPTIONS='-Wextra' '-Wall' '-g' '-v' '-D' 'ANDROID' '-O0' '-g' '-c' '-MMD' '-MP' '-I' '/Users/spartygw/src/libraries' '-I' '/Users/spartygw/src/libraries/thirdparty' '-I' '/Users/spartygw/src/libraries/thirdparty/jpeg' '-I' '/Users/spartygw/src/libraries/thirdparty/zlib' '-I' '/Users/spartygw/src/include' '-I' '/Users/spartygw/android-toolchain/sysroot/usr/include' '-D' '__ARM_ARCH_5__' '-D' '__ARM_ARCH_5T__' '-D' '__ARM_ARCH_5E__' '-D' '__ARM_ARCH_5TE__' '-D' '__ANDROID__' '-D' 'DEBUG' '-o' 'obj/Binary.ao' '-march=armv5te' '-mfloat-abi=soft' '-mfpu=vfp' '-mtls-dialect=gnu'
/Users/spartygw/android-toolchain/bin/../libexec/gcc/arm-linux-androideabi/4.8/cc1plus -quiet -v -I /Users/spartygw/src/libraries -I /Users/spartygw/src/libraries/thirdparty -I /Users/spartygw/src/libraries/thirdparty/jpeg -I /Users/spartygw/src/libraries/thirdparty/zlib -I /Users/spartygw/src/include -I /Users/spartygw/android-toolchain/sysroot/usr/include -iprefix /Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/ -isysroot /Users/spartygw/android-toolchain/bin/../sysroot -MMD obj/Binary.d -MP -MQ obj/Binary.ao -D_GNU_SOURCE -D ANDROID -D __ARM_ARCH_5__ -D __ARM_ARCH_5T__ -D __ARM_ARCH_5E__ -D __ARM_ARCH_5TE__ -D __ANDROID__ -D DEBUG Binary.cc -mbionic -fpic -quiet -dumpbase Binary.cc -march=armv5te -mfloat-abi=soft -mfpu=vfp -mtls-dialect=gnu -auxbase-strip obj/Binary.ao -g -g -O0 -Wextra -Wall -version -fexceptions -frtti -o /var/folders/03/hpjtv8c969scgcc5121ybrwr0000gn/T//ccciFNCN.s
GNU C++ (GCC) version 4.8 (arm-linux-androideabi)
compiled by GNU C version 4.2.1 (Apple Inc. build 5666) (dot 3), GMP version 5.0.5, MPFR version 3.1.1, MPC version 1.0.1
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/include"
ignoring nonexistent directory "/Users/spartygw/android-toolchain/bin/../lib/gcc/../../include/c++/4.8/backward"
ignoring duplicate directory "/Users/spartygw/android-toolchain/bin/../lib/gcc/../../lib/gcc/arm-linux-androideabi/4.8/include"
ignoring nonexistent directory "/Users/spartygw/android-toolchain/bin/../sysroot/usr/local/include"
ignoring duplicate directory "/Users/spartygw/android-toolchain/bin/../lib/gcc/../../lib/gcc/arm-linux-androideabi/4.8/include-fixed"
ignoring nonexistent directory "/Users/spartygw/android-toolchain/bin/../lib/gcc/../../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/include"
ignoring nonexistent directory "/Users/spartygw/src/include"
ignoring duplicate directory "/Users/spartygw/android-toolchain/sysroot/usr/include"
as it is a non-system directory that duplicates a system directory
#include "..." search starts here:
#include <...> search starts here:
/Users/spartygw/src/libraries
/Users/spartygw/src/libraries/thirdparty
/Users/spartygw/src/libraries/thirdparty/jpeg
/Users/spartygw/src/libraries/thirdparty/zlib
/Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/include
/Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/include-fixed
/Users/spartygw/android-toolchain/bin/../lib/gcc/../../include/c++/4.8
/Users/spartygw/android-toolchain/bin/../lib/gcc/../../include/c++/4.8/arm-linux-androideabi
/Users/spartygw/android-toolchain/bin/../sysroot/usr/include
End of search list.
GNU C++ (GCC) version 4.8 (arm-linux-androideabi)
compiled by GNU C version 4.2.1 (Apple Inc. build 5666) (dot 3), GMP version 5.0.5, MPFR version 3.1.1, MPC version 1.0.1
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 7c7303e2f21bf352ab9993b8ba84df0b
^
COLLECT_GCC_OPTIONS='-Wextra' '-Wall' '-g' '-v' '-D' 'ANDROID' '-O0' '-g' '-c' '-MMD' '-MP' '-I' '/Users/spartygw/src/libraries' '-I' '/Users/spartygw/src/libraries/thirdparty' '-I' '/Users/spartygw/src/libraries/thirdparty/jpeg' '-I' '/Users/spartygw/src/libraries/thirdparty/zlib' '-I' '/Users/spartygw/src/include' '-I' '/Users/spartygw/android-toolchain/sysroot/usr/include' '-D' '__ARM_ARCH_5__' '-D' '__ARM_ARCH_5T__' '-D' '__ARM_ARCH_5E__' '-D' '__ARM_ARCH_5TE__' '-D' '__ANDROID__' '-D' 'DEBUG' '-o' 'obj/Binary.ao' '-march=armv5te' '-mfloat-abi=soft' '-mfpu=vfp' '-mtls-dialect=gnu'
/Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/as -v -I /Users/spartygw/src/libraries -I /Users/spartygw/src/libraries/thirdparty -I /Users/spartygw/src/libraries/thirdparty/jpeg -I /Users/spartygw/src/libraries/thirdparty/zlib -I /Users/spartygw/src/include -I /Users/spartygw/android-toolchain/sysroot/usr/include -march=armv5te -mfloat-abi=soft -mfpu=vfp -meabi=5 --noexecstack -o obj/Binary.ao /var/folders/03/hpjtv8c969scgcc5121ybrwr0000gn/T//ccciFNCN.s
GNU assembler version 2.24 (arm-linux-androideabi) using BFD version (GNU Binutils) 2.24
COMPILER_PATH=/Users/spartygw/android-toolchain/bin/../libexec/gcc/arm-linux-androideabi/4.8/:/Users/spartygw/android-toolchain/bin/../libexec/gcc/:/Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/bin/
LIBRARY_PATH=/Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/:/Users/spartygw/android-toolchain/bin/../lib/gcc/:/Users/spartygw/android-toolchain/bin/../lib/gcc/arm-linux-androideabi/4.8/../../../../arm-linux-androideabi/lib/:/Users/spartygw/android-toolchain/bin/../sysroot/usr/lib/
COLLECT_GCC_OPTIONS='-Wextra' '-Wall' '-g' '-v' '-D' 'ANDROID' '-O0' '-g' '-c' '-MMD' '-MP' '-I' '/Users/spartygw/src/libraries' '-I' '/Users/spartygw/src/libraries/thirdparty' '-I' '/Users/spartygw/src/libraries/thirdparty/jpeg' '-I' '/Users/spartygw/src/libraries/thirdparty/zlib' '-I' '/Users/spartygw/src/include' '-I' '/Users/spartygw/android-toolchain/sysroot/usr/include' '-D' '__ARM_ARCH_5__' '-D' '__ARM_ARCH_5T__' '-D' '__ARM_ARCH_5E__' '-D' '__ARM_ARCH_5TE__' '-D' '__ANDROID__' '-D' 'DEBUG' '-o' 'obj/Binary.ao' '-march=armv5te' '-mfloat-abi=soft' '-mfpu=vfp' '-mtls-dialect=gnu'
Android.mk:
My Android.mk in the jni directory looks like this:
LOCAL_PATH := $(call my-dir)
############## libGabObjs ##################
include $(CLEAR_VARS)
LOCAL_MODULE = libGabObjs
LOCAL_SRC_FILES := libGabObjs_android.a
ifneq (,$(wildcard $(LOCAL_SRC_FILES)))
include $(PREBUILT_STATIC_LIBRARY)
endif
######################################
#####################################
############## libavcodec ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libavcodec
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libavcodec.so
include $(PREBUILT_SHARED_LIBRARY)
#####################################
############## libavutil ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libavutil
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libavutil.so
include $(PREBUILT_SHARED_LIBRARY)
#####################################
############## libswscale ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libswscale
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libswscale.so
include $(PREBUILT_SHARED_LIBRARY)
#####################################
############## libspeex ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libspeex
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libspeex.a
include $(PREBUILT_STATIC_LIBRARY)
#####################################
############## libspeexdsp ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libspeexdsp
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libspeexdsp.a
include $(PREBUILT_STATIC_LIBRARY)
#####################################
############## libjpeg ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libjpeg
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libjpeg.a
include $(PREBUILT_STATIC_LIBRARY)
#####################################
############## libcrypto ############
include $(CLEAR_VARS)
LOCAL_MODULE := libcrypto
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libcrypto.a
include $(PREBUILT_STATIC_LIBRARY)
#####################################
############## libssl #############
include $(CLEAR_VARS)
LOCAL_MODULE := libssl
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libssl.a
include $(PREBUILT_STATIC_LIBRARY)
#####################################
############## libcutils #############
#include $(CLEAR_VARS)
#LOCAL_MODULE := libcutils
#LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libcutils.so
#include $(PREBUILT_SHARED_LIBRARY)
#####################################
############## libs ############
include $(CLEAR_VARS)
LOCAL_MODULE := vhc_jnilib
LOCAL_SRC_FILES := video_codec_jni.cpp \
MyBaseThread.cc \
MicMonitor.cpp \
framework.cpp \
GabrielJni.cpp
LOCAL_C_INCLUDES := \
$(LOCAL_PATH)/../../../libraries/ \
$(LOCAL_PATH)/../../../libraries/thirdparty/
LOCAL_STATIC_LIBRARIES := \
libGabObjs \
libssl \
libcrypto \
libjpeg \
libspeex \
libspeexdsp
LOCAL_SHARED_LIBRARIES := \
libavcodec libavutil libswscale
A_DEFINES := -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -D__ANDROID__ -DDEBUG $(ADDDEF)
DEFINES :=$(DEFINES)
LOCAL_LDLIBS = -lOpenSLES -lz -llog -landroid
LOCAL_CPPFLAGS := -D_FILE_OFFSET_BITS=64 -DDEBUG -D__ANDROID__
LOCAL_CFLAGS = -DFIXED_POINT -DEXPORT="" -g -O0 -fexceptions -funroll-loops -UHAVE_CONFIG_H -I../../libraries
include $(BUILD_SHARED_LIBRARY)
####
####
#### now build older vhcjnilib for lollipop and older
####
####
#####################################
############## libavcodec_lollipop ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libavcodec_lollipop
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libavcodec_lollipop.so
include $(PREBUILT_SHARED_LIBRARY)
#####################################
############## libavutil_lollipop ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libavutil_lollipop
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libavutil_lollipop.so
include $(PREBUILT_SHARED_LIBRARY)
#####################################
############## libswscale_lollipop ##############
include $(CLEAR_VARS)
LOCAL_MODULE := libswscale_lollipop
LOCAL_SRC_FILES := ../../../../lib/third-party/arm-android/libswscale_lollipop.so
include $(PREBUILT_SHARED_LIBRARY)
#####################################
############## libs ############
include $(CLEAR_VARS)
LOCAL_MODULE := vhc_jnilib_lollipop
LOCAL_SRC_FILES := video_codec_jni.cpp \
MyBaseThread.cc \
MicMonitor.cpp \
framework.cpp \
GabrielJni.cpp
LOCAL_C_INCLUDES := \
$(LOCAL_PATH)/../../../libraries/ \
$(LOCAL_PATH)/../../../libraries/thirdparty/
LOCAL_STATIC_LIBRARIES := \
libGabObjs \
libssl \
libcrypto \
libjpeg \
libspeex \
libspeexdsp
LOCAL_SHARED_LIBRARIES := \
libavcodec_lollipop libavutil_lollipop libswscale_lollipop
A_DEFINES := -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -D__ANDROID__ -DDEBUG $(ADDDEF)
DEFINES :=$(DEFINES)
LOCAL_LDLIBS = -lOpenSLES -lz -llog -landroid
LOCAL_CPPFLAGS := -D_FILE_OFFSET_BITS=64 -DDEBUG -D__ANDROID__
LOCAL_CFLAGS = -DFIXED_POINT -DEXPORT="" -g -fexceptions -funroll-loops -UHAVE_CONFIG_H -I../../libraries
include $(BUILD_SHARED_LIBRARY)
Application.mk:
APP_STL := stlport_static
APP_PLATFORM := android-10
APP_ABI := armeabi-v7a
APP_OPTIM := debug
My build.gradle file:
//////////////////////////////////////////////////////////////////////////////
// need this for password dialog
import groovy.swing.SwingBuilder
buildscript {
System.properties['com.android.build.gradle.overrideVersionCheck'] = 'true'
repositories {
jcenter()
}
dependencies {
// Current Gradle version.
final GradleVersion gradleVersion = GradleVersion.current()
// Gradle version 3.0+ requires a different classpath
final GradleVersion gradle3 = GradleVersion.version('3.0')
// Compare versions.
if (gradleVersion >= gradle3) {
println "Your Gradle version is at least 3.0"
classpath 'com.android.tools.build:gradle:2.2.0'
} else {
println "Your Gradle version is older than 3.0"
classpath 'com.android.tools.build:gradle:2.1.0'
}
}
}
apply plugin: 'com.android.application'
android {
lintOptions {
disable 'LongLogTag','ProtectedPermissions','AppLinksAutoVerifyError','MangledCRLF'
}
defaultConfig {
applicationId "com.mycompany.myapp.myclass"
}
compileSdkVersion 23
buildToolsVersion "23.0.2"
sourceSets {
main {
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
resources.srcDirs = ['src']
aidl.srcDirs = ['src']
renderscript.srcDirs = ['src']
res.srcDirs = ['res']
assets.srcDirs = ['assets']
jniLibs.srcDirs = ['libs']
}
debug.setRoot('build-types/debug')
release.setRoot('build-types/release')
}
signingConfigs {
release {
// We can leave these in environment variables
storeFile file(String.valueOf(System.getenv("PKCS12_FILE")))
keyAlias "mykey"
// These two lines make gradle believe that the signingConfigs
// section is complete. Without them, tasks like installRelease
// will not be available!
storePassword "notYourRealPassword"
keyPassword "notYourRealPassword"
}
}
buildTypes {
release {
signingConfig signingConfigs.release
}
debug {
debuggable true
jniDebuggable true
}
}
}
dependencies {
compile 'com.android.support:support-v4:23.1.1'
compile 'com.google.android.gms:play-services:8.4.0'
}
task askForPasswords {
doLast {
def pw = ''
if(System.console() == null) {
new SwingBuilder().edt {
dialog(modal: true, title: 'Enter password', alwaysOnTop: true, resizable: false, locationRelativeTo: null, pack: true, show: true) {
vbox { // Put everything below each other
label(text: "Signing the APK...Enter the keystore password:")
def input1 = passwordField()
button(defaultButton: true, text: 'OK', actionPerformed: {
pw = new String(input1.password);
dispose();
})
}
}
}
} else {
// Must create String because System.readPassword() returns char[]
// (and assigning that below fails silently)
pw = new String(System.console().readPassword("Keystore password: "))
}
android.signingConfigs.release.storePassword = pw
android.signingConfigs.release.keyPassword = pw
}
}
tasks.whenTaskAdded { theTask ->
if (theTask.name.equals("packageRelease")) {
theTask.dependsOn "askForPasswords"
}
}
task getVersion() {
println GradleVersion.current().getVersion()
}

How can I merge two Android.mk files when adding a library?

I'm new with Android so I don't fully understand how to make Android.mk files.
My project was running fine, following a tutorial online where the Android.mk was provided. But later on I needed to add a missing library and the tutorial for that had another Android.mk, now I'm trying to merge the two together.
Here is my Android.mk :
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
#opencv
OPENCVROOT:= C:\OpenCV-2.4.10-android-sdk
OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=on
OPENCV_LIB_TYPE:=SHARED
include ${OPENCVROOT}/sdk/native/jni/OpenCV.mk
LOCAL_SRC_FILES := com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp
LOCAL_LDLIBS += -llog
LOCAL_MODULE := MyOpencvLibs
include $(BUILD_SHARED_LIBRARY)
Here is the Android.mk I need to add :
LOCAL_PATH := $(call my-dir)
OPENCV_PATH := D:/CODE/OpenCV-2.4.10-android-sdk/sdk/native/jni
include $(CLEAR_VARS)
LOCAL_MODULE := nonfree
LOCAL_SRC_FILES := libnonfree.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
OPENCV_INSTALL_MODULES := on
OPENCV_CAMERA_MODULES := off
include $(OPENCV_PATH)/OpenCV.mk
LOCAL_C_INCLUDES := \
$(LOCAL_PATH) \
$(OPENCV_PATH)/include
LOCAL_SRC_FILES := \
nonfree_jni.cpp
LOCAL_MODULE := nonfree_demo
LOCAL_CFLAGS := -Werror -O3 -ffast-math
LOCAL_LDLIBS := -llog -ldl
LOCAL_SHARED_LIBRARIES += nonfree
include $(BUILD_SHARED_LIBRARY)
What I'm interested in in the last Android.mk is the libnonfree.so only, I don't need the cpp file.
Here is the structure of my project :
EDIT :
Thanks for your answers. I've done what was suggested and my Android.mk looks like that now :
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
#opencv
OPENCVROOT:= C:\OpenCV-2.4.10-android-sdk
OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=on
OPENCV_LIB_TYPE:=SHARED
include ${OPENCVROOT}/sdk/native/jni/OpenCV.mk
LOCAL_SRC_FILES := com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp
LOCAL_LDLIBS += -llog
LOCAL_SHARED_LIBRARIES += nonfree
LOCAL_MODULE := MyOpencvLibs
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := nonfree
LOCAL_SRC_FILES := libnonfree.so
include $(PREBUILT_SHARED_LIBRARY)
But the problem remains. I've got "Undefined reference" to methods libnonfree.so should add. I assumed the problem was from the Android.mk but maybe it's from elsewhere then.
I've added System.loadLibrary("nonfree"); to my MainACtivity and
#include "opencv2/nonfree/nonfree.hpp"
#include "opencv2/nonfree/features2d.hpp"
I don't know what I'm doing wrong.
EDIT 2 :
Here is the error :
Application.mk :
APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
APP_PLATFORM := android-16
I didn't know where to set arguments="V=1" in my build.gradle
My build.gradle :
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.example.adrien.ndkopencvtest4"
minSdkVersion 15
targetSdkVersion 25
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
sourceSets.main {
//jniLibs.srcDirs = ['src/main/jniLibs']
jni.srcDirs = [] //disable automatic ndk-build call
}
task ndkBuild(type: Exec, description: 'Compile JNI source via NDK') {
commandLine "C:/Users/Adrien/AppData/Local/Android/sdk/ndk-bundle/ndk-build.cmd",
'NDK_PROJECT_PATH=build/intermediates/ndk',
'NDK_LIBS_OUT=src/main/jniLibs',
'APP_BUILD_SCRIPT=src/main/jni/Android.mk',
'NDK_APPLICATION_MK=src/main/jni/Application.mk'
}
tasks.withType(JavaCompile) {
compileTask -> compileTask.dependsOn ndkBuild
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.github.wseemann:FFmpegMediaMetadataRetriever-armeabi-v7a:1.0.14'
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
compile project(':openCVLibrary2410')
}
EDIT 3 :
Results of "ndk-build V=1" :
C:\Users\Adrien\AndroidStudioProjects\NDKOpencvTest4\app\src\main\jni>ndk-build V=1
[armeabi-v7a] SharedLibrary : libMyOpencvLibs.so
C:/Users/Adrien/AppData/Local/Android/sdk/ndk-bundle/build//../toolchains/llvm/preb
uilt/windows-x86_64/bin/clang++.exe -Wl,-soname,libMyOpencvLibs.so -shared --sysroo
t=C:/Users/Adrien/AppData/Local/Android/sdk/ndk-bundle/build//../platforms/android-
16/arch-arm C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/obj/l
ocal/armeabi-v7a/objs/MyOpencvLibs/com_example_adrien_ndkopencvtest4_OpencvNativeCl
ass.o C:/Users/Adrien/AppData/Local/Android/sdk/ndk-bundle/build//../sources/cxx-st
l/gnu-libstdc++/4.9/libs/armeabi-v7a/libgnustl_static.a -lgcc C:/Users/Adrien/Andro
idStudioProjects/NDKOpencvTest4/app/src/main/obj/local/armeabi-v7a/libopencv_java.s
o C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/obj/local/armea
bi-v7a/libnonfree.so -gcc-toolchain C:/Users/Adrien/AppData/Local/Android/sdk/ndk-
bundle/build//../toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64 -no-c
anonical-prefixes -target armv7-none-linux-androideabi -Wl,--fix-cortex-a8 -Wl,--b
uild-id -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--warn-sh
ared-textrel -Wl,--fatal-warnings -LC:/Users/Adrien/AppData/Local/Android/sdk/ndk
-bundle/build//../platforms/android-16/arch-arm/usr/lib -llog -lc -lm -o C:/Users/A
drien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/obj/local/armeabi-v7a/libMy
OpencvLibs.so
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_a
drien_ndkopencvtest4_OpencvNativeClass.cpp:214: error: undefined reference to 'cv::
SURF::SURF(double, int, int, bool, bool)'
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_a
drien_ndkopencvtest4_OpencvNativeClass.cpp:222: error: undefined reference to 'cv::
SURF::SURF()'
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_a
drien_ndkopencvtest4_OpencvNativeClass.cpp:204: error: undefined reference to 'VTT
for cv::SURF'
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_a
drien_ndkopencvtest4_OpencvNativeClass.cpp:204: error: undefined reference to 'VTT
for cv::SURF'
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_a
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp:204: error: undefined
reference to 'VTT for cv::SURF'
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp:449: error: undefined
reference to 'cv::SURF::SURF(double, int, int, bool, bool)'
C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/jni/com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp:457: error: undefined
reference to 'cv::SURF::SURF()'
clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [C:/Users/Adrien/AndroidStudioProjects/NDKOpencvTest4/app/src/main/obj/local/armeabi-v7a/libMyOpencvLibs.so] Error 1
SOLUTION :
My libnonfree.so file was not correct, I downloaded another one. I also changed my Application.mk file to :
APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
APP_PLATFORM := android-16

If you want to add a prebuilt shared library to your project, you don't need a separate Android.mk
Let's take your script,
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
#opencv
OPENCVROOT:= C:\OpenCV-2.4.10-android-sdk
OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=on
OPENCV_LIB_TYPE:=SHARED
include ${OPENCVROOT}/sdk/native/jni/OpenCV.mk
LOCAL_SRC_FILES := com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp
LOCAL_LDLIBS += -llog
LOCAL_MODULE := MyOpencvLibs
include $(BUILD_SHARED_LIBRARY)
and simply add to the bottom the extra module you need:
include $(CLEAR_VARS)
LOCAL_MODULE := nonfree
LOCAL_SRC_FILES := libnonfree.so
include $(PREBUILT_SHARED_LIBRARY)
Now the file C:\Users\Adrien\AndroidStudioProjects\NDKOpencvTest4\app\src\main\jni\libnonfree.so will be packed into your APK.
If you need this library to link your libMyOpencvLibs.so (this means, if your code in com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp uses some functions exported from libnonfree.so, you should also refeence it in your module:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
#opencv
OPENCVROOT:= C:\OpenCV-2.4.10-android-sdk
OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=on
OPENCV_LIB_TYPE:=SHARED
include ${OPENCVROOT}/sdk/native/jni/OpenCV.mk
LOCAL_SRC_FILES := com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp
LOCAL_LDLIBS += -llog
LOCAL_SHARED_LIBRARIES += nonfree
LOCAL_MODULE := MyOpencvLibs
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := nonfree
LOCAL_SRC_FILES := libnonfree.so
include $(PREBUILT_SHARED_LIBRARY)

Modify your android.mk as:
LOCAL_PATH := $(call my-dir)
OPENCV_PATH := D:/CODE/OpenCV-2.4.10-android-sdk/sdk/native/jni
include $(CLEAR_VARS)
LOCAL_MODULE := nonfree
LOCAL_SRC_FILES := libnonfree.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
#opencv
OPENCVROOT:= C:\OpenCV-2.4.10-android-sdk
OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=on
OPENCV_LIB_TYPE:=SHARED
include ${OPENCVROOT}/sdk/native/jni/OpenCV.mk
LOCAL_SRC_FILES := com_example_adrien_ndkopencvtest4_OpencvNativeClass.cpp
LOCAL_SHARED_LIBRARIES += nonfree
LOCAL_LDLIBS += -llog
LOCAL_MODULE := MyOpencvLibs
include $(BUILD_SHARED_LIBRARY)
Here the prebuild library i.e. libnonfree.so is declared in the android.mk, and referenced to it later via
LOCAL_SHARED_LIBRARIES += nonfree
Now to use it you need to load the latest built library in yout MainActivity i.e.
System.loadLibrary("MyOpencvLibs");
Thats it, now you have merged both the android.mk files into a new module named: MyOpencvLibs
For better understanding you can read my blog : https://androidtutsweb.wordpress.com/2017/04/04/android-mk-for-ndk-build-using-pre-build-libraries/

Building native OpenCV using Android NDK gives "undefined reference to 'cv::String::deallocate()'"

I'm attempting to use OpenCV with the NDK in Android Studio. As you may notice I'm using another native library called GStreamer.
My build.gradle:
apply plugin: 'com.android.application'
def getNdkCommandLine(ndkRoot, target) {
def gstRoot
def opencvRoot
gstRoot = 'C:/local/gstreamer-1.0-android-arm-1.8.0'
opencvRoot = 'C:/local/OpenCV-3.1.0-android-sdk/OpenCV-android-sdk'
if (ndkRoot == null)
throw new GradleException('NDK not configured')
return ["$ndkRoot/ndk-build.cmd",
'NDK_PROJECT_PATH=build',
'APP_BUILD_SCRIPT=src/main/jni/Android.mk',
'NDK_APPLICATION_MK=src/main/jni/Application.mk',
'GSTREAMER_JAVA_SRC_DIR=src/main/java',
"GSTREAMER_ROOT_ANDROID=$gstRoot",
"OPENCV_ROOT_ANDROID=$opencvRoot",
"$target"]
}
android {
compileSdkVersion 19
buildToolsVersion "23.0.2"
sourceSets {
main {
// Avoid using the built in JNI generation plugin
jni.srcDirs = []
jniLibs.srcDirs = ['build/libs']
}
}
defaultConfig {
applicationId "com.mytestcom.mytestapp"
minSdkVersion 19
targetSdkVersion 19
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_7
targetCompatibility JavaVersion.VERSION_1_7
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
signingConfig signingConfigs.release
}
}
// Before compiling our app, prepare NDK code
tasks.withType(JavaCompile) {
compileTask -> compileTask.dependsOn ndkBuild
}
// Need to call clean on NDK ourselves too
clean.dependsOn 'ndkClean'
// Build native code using mk files like on Eclipse
task ndkBuild(type: Exec, description: 'Compile JNI source via NDK') {
commandLine getNdkCommandLine(android.ndkDirectory, 'TARGET_ARCH_ABI=armeabi-v7a')
}
task ndkClean(type: Exec, description: 'Clean JNI code built via NDK') {
commandLine getNdkCommandLine(android.ndkDirectory, 'clean')
}
//Renames APK to current versionName found in Android Manifest
applicationVariants.all { variant ->
variant.outputs.each { output ->
def outputFile = output.outputFile
if (outputFile != null && outputFile.name.endsWith('.apk')) {
def fileName = "My_Test_App-${versionName}.apk"
output.outputFile = new File(outputFile.parent, fileName)
}
}
}
}
dependencies {
compile 'com.android.support:support-v4:19.1.0'
compile project(':openCVLibrary310')
}
Android.mk:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := gstplayer
LOCAL_SRC_FILES := player.cpp
LOCAL_C_INCLUDES := $(OPENCV_ROOT_ANDROID)/sdk/native/jni/include
LOCAL_SHARED_LIBRARIES := gstreamer_android
LOCAL_LDLIBS := -llog -landroid
include $(BUILD_SHARED_LIBRARY)
ifeq ($(TARGET_ARCH_ABI),armeabi)
GSTREAMER_ROOT := $(GSTREAMER_ROOT_ARM)
else ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
GSTREAMER_ROOT := $(GSTREAMER_ROOT_ARMV7)
else ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
GSTREAMER_ROOT := $(GSTREAMER_ROOT_ARM64)
else ifeq ($(TARGET_ARCH_ABI),x86)
GSTREAMER_ROOT := $(GSTREAMER_ROOT_X86)
else ifeq ($(TARGET_ARCH_ABI),x86_64)
GSTREAMER_ROOT := $(GSTREAMER_ROOT_X86_64)
else
$(error Target arch ABI not supported)
endif
ifndef GSTREAMER_ROOT
ifndef GSTREAMER_ROOT_ANDROID
$(error GSTREAMER_ROOT_ANDROID is not defined!)
endif
GSTREAMER_ROOT := $(GSTREAMER_ROOT_ANDROID)
endif
GSTREAMER_NDK_BUILD_PATH := $(GSTREAMER_ROOT)/share/gst-android/ndk-build/
include $(GSTREAMER_NDK_BUILD_PATH)/plugins.mk
GSTREAMER_PLUGINS := $(GSTREAMER_PLUGINS_CORE) $(GSTREAMER_PLUGINS_PLAYBACK) $(GSTREAMER_PLUGINS_CODECS) $(GSTREAMER_PLUGINS_NET) $(GSTREAMER_PLUGINS_SYS) $(GSTREAMER_PLUGINS_CODECS_RESTRICTED) $(GSTREAMER_CODECS_GPL) $(GSTREAMER_PLUGINS_ENCODING) $(GSTREAMER_PLUGINS_VIS) $(GSTREAMER_PLUGINS_EFFECTS) $(GSTREAMER_PLUGINS_NET_RESTRICTED)
GSTREAMER_EXTRA_DEPS := gstreamer-player-1.0 gstreamer-video-1.0 glib-2.0
OPENCV_INSTALL_MODULES:=on
OPENCV_CAMERAMODULES:=off
OPENCV_LIB_TYPE:=STATIC
include $(GSTREAMER_NDK_BUILD_PATH)/gstreamer-1.0.mk
include $(OPENCV_ROOT_ANDROID)/sdk/native/jni/OpenCV.mk
Application.mk:
APP_PLATFORM=android-19
APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
I'm using OpenCV-3.1.0-android-sdk, NDK r10e, Android Studio 2.1, Windows. I've tried using a different version of OpenCV (2.4.11) but it didn't help.
C:\local\OpenCV-3.1.0-android-sdk\OpenCV-android-sdk\sdk\native\jni\include\opencv2\core\cvstd.hpp
Error:(625) undefined reference to 'cv::String::allocate(unsigned int)'
Error:(667) undefined reference to 'cv::String::deallocate()'
Error:(667) undefined reference to 'cv::String::deallocate()'
Error:(667) undefined reference to 'cv::String::deallocate()'
Error:(667) undefined reference to 'cv::String::deallocate()'
C:\local\OpenCV-3.1.0-android-sdk\OpenCV-android-sdk\sdk\native\jni\include\opencv2\core\mat.inl.hpp
Error:(443) undefined reference to 'cv::error(int, cv::String const&, char const*, char const*, int)'
Error:(459) undefined reference to 'cv::error(int, cv::String const&, char const*, char const*, int)'
Error:(682) undefined reference to 'cv::Mat::deallocate()'
Error:(571) undefined reference to 'cv::fastFree(void*)'
Error:(592) undefined reference to 'cv::Mat::copySize(cv::Mat const&)'

I ran into a similar issue a few days ago. Imo, you should try to replace LOCAL_LDLIBS := -llog -landroid with LOCAL_LDLIBS += -llog -landroid.

The explanation for these errors is that the OpenCV code being used in GStreamer doesn't have access to the rest of the library, so it's failing to find basic methods like allocate() and deallocate().
The solution was to include some prebuilt static libraries in the Android.mk so that these references are defined. So after include $(OPENCV_ROOT_ANDROID)/sdk/native/jni/OpenCV.mk I added these lines to add the relevant libraries:
include $(CLEAR_VARS)
LOCAL_MODULE := opencv-tbb
LOCAL_SRC_FILES := opencvLib/3rdparty/libs/$(TARGET_ARCH_ABI)/libtbb.a
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := opencv-core
LOCAL_SRC_FILES := opencvLib/$(TARGET_ARCH_ABI)/libopencv_core.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/opencvLib/include/
LOCAL_STATIC_LIBRARIES := opencv-tbb
include $(PREBUILT_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := opencv-imgproc
LOCAL_SRC_FILES := opencvLib/$(TARGET_ARCH_ABI)/libopencv_imgproc.a
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/opencvLib/include/
LOCAL_STATIC_LIBRARIES := opencv-core
include $(PREBUILT_STATIC_LIBRARY)
The LOCAL_EXPORT_C_INCLUDESvariable sets the include files that correspond to that library. In this case the include folder works for both libraries.
Now for the GStreamer code to be able to use these libraries we have to add LOCAL_STATIC_LIBRARIES := opencv-core opencv-imgproc to the gstplayer module which references the 2 added OpenCV modules.
Edit:
Also I forgot to mention I changed APP_STL := gnustl_static to APP_STL := gnustl_shared in Application.mk

gradle build failing on c library in Android Studio

Let me start by saying that I am new to Gradle, Android Studio, and Git. We just migrated from Eclipse and SVN to these technologies and are having a bit of trouble getting our Android project running. We are developing on a Mac. I have inherited this project from another team and am unsure of why they chose to do certain things.
[Unfortunately, I had to censor the name of the project and the user throughout the screenshots.]
We are using c ogg libraries to record audio files in our Android application.
The error we are receiving is:
We've found this blog post and this stackoverflow question which links to this other SO question, but we have been unable to get any of them working.
We are unsure if the project is set up correctly, as there seem to be a lot of Android.mk files floating around.
From the question links above, it seems we need to force Gradle to not overwrite our Android.mk files with it's own, but the suggestions only seemed to put us further down the rabbit hole.
Would anyone kindly point us in the right direction?
jni/Android.mk
LOCAL_PATH := $(call my-dir)
LOCAL_C_INCLUDE := $(LOCAL_PATH)/include
include $(addprefix $(LOCAL_PATH)/, $(addsuffix /Android.mk, \
libogg \
libvorbis \
libvorbis-jni \
))
jni/libogg/Android.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := libogg
LOCAL_CFLAGS += -I$(LOCAL_PATH)/../include -ffast-math -fsigned-char
ifeq ($(TARGET_ARCH),arm)
LOCAL_CFLAGS += -march=armv6 -marm -mfloat-abi=softfp -mfpu=vfp
endif
LOCAL_SRC_FILES := \
bitwise.c \
framing.c
include $(BUILD_SHARED_LIBRARY)
jni/libvorbis-jni/Android.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := vorbis-jni
LOCAL_CFLAGS += -I$(LOCAL_PATH)/../include -fsigned-char
ifeq ($(TARGET_ARCH),arm)
LOCAL_CFLAGS += -march=armv6 -marm -mfloat-abi=softfp -mfpu=vfp
endif
LOCAL_SHARED_LIBRARIES := libogg libvorbis
LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -llog
LOCAL_SRC_FILES := \
com_*****_android_audio_VorbisEncoder.c
include $(BUILD_SHARED_LIBRARY)
jni/libvorbis/Android.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := libvorbis
LOCAL_CFLAGS += -I$(LOCAL_PATH)/../include -ffast-math -fsigned-char
ifeq ($(TARGET_ARCH),arm)
LOCAL_CFLAGS += -march=armv6 -marm -mfloat-abi=softfp -mfpu=vfp
endif
LOCAL_SHARED_LIBRARIES := libogg
LOCAL_SRC_FILES := \
mdct.c \
smallft.c \
block.c \
envelope.c \
window.c \
lsp.c \
lpc.c \
analysis.c \
synthesis.c \
psy.c \
info.c \
floor1.c \
floor0.c \
res0.c \
mapping0.c \
registry.c \
codebook.c \
sharedbook.c \
lookup.c \
bitrate.c \
vorbisfile.c \
vorbisenc.c
include $(BUILD_SHARED_LIBRARY)
build.gradle of the project
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.2.3'
}
}
allprojects {
repositories {
jcenter()
}
}
build.gradle of the project module
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "com.*****.android.hud"
minSdkVersion 14
targetSdkVersion 18
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}

Problems compiling VLC for Android - libvlcjni.so

After a day and a half of modification I've finally gotten the VLC project to almost compile under OS X. I get the following error when its just about to link libvlcjni.so. There are roughly 100 more undefined references, but most are to few functions:
std::__stl_throw_length_error(char const*)
std::__node_alloc::_M_deallocate(void*, unsigned int)
Has anyone got any pointers?
Compile thumb : vlcjni <= aout.c
Compile thumb : vlcjni <= pthread-condattr.c
Compile thumb : vlcjni <= pthread-rwlocks.c
Compile thumb : vlcjni <= eventfd.c
Compile thumb : vlcjni <= sem.c
SharedLibrary : libvlcjni.so
../vlc/android/modules/demux/mkv/.libs/libmkv_plugin.a(libmkv_plugin_la-mkv.o): In function std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_compare(char const*, char const*, char const*, char const*)':
/Android/ndk/sources/cxx-stl/stlport/stlport/stl/_string.h:1076: undefined reference tostd::__stl_throw_out_of_range(char const*)'
Application.mk
APP_PLATFORM := android-9
ifeq ($(NO_NEON),)
APP_ABI := armeabi-v7a
else ifneq ($(TEGRA2),)
APP_ABI := armeabi-v7a
else
APP_ABI := armeabi
endif
APP_STL := gnustl_static
APP_PLATFORM := android-9
APP_ABI := armeabi-v7a
Android.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
ifeq ($(NO_NEON),)
ARCH=armeabi-v7a
LOCAL_MODULE := libvlcjni
else ifneq ($(TEGRA2),)
ARCH=armeabi-v7a
LOCAL_MODULE := libvlcjni-tegra2
else
ARCH=armeabi
LOCAL_MODULE := libvlcjni
endif
LOCAL_SRC_FILES := libvlcjni_danmaku.c aout.c pthread-condattr.c pthread-rwlocks.c eventfd.c sem.c
LOCAL_C_INCLUDES := $(VLC_SRC_DIR)/include
ifeq ($(NO_NDK_V7),1)
CPP_STATIC=$(ANDROID_NDK)/sources/cxx-stl/gnu-libstdc++/libs/$(ARCH)/libstdc++.a
else
CPP_STATIC=$(ANDROID_NDK)/sources/cxx-stl/stlport/libs/$(ARCH)/libstlport_static.a
endif
LOCAL_CFLAGS := -std=gnu99
LOCAL_LDLIBS := -L$(VLC_CONTRIB)/lib \
$(VLC_MODULES) \
$(VLC_BUILD_DIR)/lib/.libs/libvlc.a \
$(VLC_BUILD_DIR)/src/.libs/libvlccore.a \
$(VLC_BUILD_DIR)/compat/.libs/libcompat.a \
-ldl -lz -lm -llog \
-ldvbpsi -lebml -lmatroska -ltag \
-logg -lFLAC -ltheora \
-lmpeg2 -ldca -la52 \
-lavformat -lavcodec -lswscale -lavutil -lpostproc -lgsm -lopenjpeg \
-lliveMedia -lUsageEnvironment -lBasicUsageEnvironment -lgroupsock \
-lspeex -lspeexdsp \
-lxml2 -lpng -lgnutls -lgcrypt -lgpg-error -lfreetype -liconv \
$(CPP_STATIC)
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := libiomx-gingerbread
LOCAL_SRC_FILES := ../$(VLC_SRC_DIR)/modules/codec/omxil/iomx.cpp
LOCAL_C_INCLUDES := $(VLC_SRC_DIR)/modules/codec/omxil $(ANDROID_SYS_HEADERS_GINGERBREAD)/frameworks/base/include $(ANDROID_SYS_HEADERS_GINGERBREAD)/system/core/include
LOCAL_LDLIBS := -L$(ANDROID_LIBS) -lgcc -lstagefright -lmedia -lutils -lbinder
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := libiomx-hc
LOCAL_SRC_FILES := ../$(VLC_SRC_DIR)/modules/codec/omxil/iomx.cpp
LOCAL_C_INCLUDES := $(VLC_SRC_DIR)/modules/codec/omxil $(ANDROID_SYS_HEADERS_HC)/frameworks/base/include $(ANDROID_SYS_HEADERS_HC)/frameworks/base/native/include $(ANDROID_SYS_HEADERS_HC)/system/core/include $(ANDROID_SYS_HEADERS_HC)/hardware/libhardware/include
LOCAL_LDLIBS := -L$(ANDROID_LIBS) -lgcc -lstagefright -lmedia -lutils -lbinder
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := libiomx-ics
LOCAL_SRC_FILES := ../$(VLC_SRC_DIR)/modules/codec/omxil/iomx.cpp
LOCAL_C_INCLUDES := $(VLC_SRC_DIR)/modules/codec/omxil $(ANDROID_SYS_HEADERS_ICS)/frameworks/base/include $(ANDROID_SYS_HEADERS_ICS)/frameworks/base/native/include $(ANDROID_SYS_HEADERS_ICS)/system/core/include $(ANDROID_SYS_HEADERS_ICS)/hardware/libhardware/include
LOCAL_LDLIBS := -L$(ANDROID_LIBS) -lgcc -lstagefright -lmedia -lutils -lbinder
include $(BUILD_SHARED_LIBRARY)

Try to include these lines into your Application.mk:
APP_CPPFLAGS += -frtti
APP_CPPFLAGS += -fexceptions
You have to explicitly enable the RTTI and Exceptions handling.
EDIT (response to your modifications):
# These are your lines in Application.mk
APP_PLATFORM := android-9
ifeq ($(NO_NEON),)
APP_ABI := armeabi-v7a
else ifneq ($(TEGRA2),)
APP_ABI := armeabi-v7a
else
APP_ABI := armeabi
endif
# Add these lines:
APP_CPPFLAGS += -frtti
APP_CPPFLAGS += -fexceptions
# I haven't seen them

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