While trying to execute a program based on C++ in android via NDK platform, the compilation is giving error that 'iostream' and 'vector' header files are not found, as I have included both of them in my C++ code.
M using android-ndk-r5b and compiling it with Cygwin.
I have seen most of the header files (even iostream & vector) in the folder **root\android-ndk-r5b\sources\cxx-stl\gnu-libstdc++\include\** but dont know why its still showing the error.
I have to fetch some header files(*.h) and some cpp files also for my program, also guide me where to place the header files & how to mention them in make file.
My android make file is:
**ANDROID.MK**
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := NDK1
FILE_LIST := $(wildcard $(LOCAL_PATH)/*.cpp)
LOCAL_SRC_FILES := $(FILE_LIST:$(LOCAL_PATH)/%=%)
APP_STL := gnustl_static
APP_STL := stlport_static
include $(BUILD_SHARED_LIBRARY)
I have searched but still dont found the command how to specify the header files in this android.mk !
Thanks in advance.
APP_STL directive need to go into Application.mk file.
Please read the documentation more carefully (in docs/CPLUSPLUS-SUPPORT.html file):
You can however select a different implementation by setting the variable APP_STL to something else in your Application.mk, for example:
APP_STL := stlport_static
Related
I'm trying to get this sample project to build with ndk-build, but for some reason it doesn't find the libraries. This is the error message I get:
build-binary.mk:688: Android NDK: Module fastcvFeatDetect depends on undefined modules:
log GLESv2
I don't know enough about ndk to know how to check if these libraries are available and if I'm pointing to their path correctly.
There's this master make file at the top level:
# An Android.mk file must begin with the definition of the LOCAL_PATH variable.
# It is used to locate source files in the development tree. In this example,
# the macro function 'my-dir', provided by the build system, is used to return
# the path of the current directory (i.e. the directory containing the
# Android.mk file itself).
#
LOCAL_PATH := $(call my-dir)
JNI_DIR := $(LOCAL_PATH)
UTILS_DIR := $(LOCAL_PATH)/utils
# The function "$(call all-subdir-makefiles)" returns a list of Android.mk
# files located in all sub-directories of the current 'my-dir' path.
# This function can be used to provide deep-nested source directory
# hierarchies to the build system.
#
include $(call all-subdir-makefiles)
Followed by these make files in the sub-directories:
LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
LOCAL_PRELINK_MODULE:= false
# This variable determines the OpenGL ES API version to use:
# If set to true, OpenGL ES 1.1 is used, otherwise OpenGL ES 2.0.
USE_OPENGL_ES_1_1 := false
# Set OpenGL ES version-specific settings.
ifeq ($(USE_OPENGL_ES_1_1), true)
OPENGLES_LIB := -lGLESv1_CM
OPENGLES_DEF := -DUSE_OPENGL_ES_1_1
else
OPENGLES_LIB := -lGLESv2
OPENGLES_DEF := -DUSE_OPENGL_ES_2_0
endif
# An optional set of compiler flags that will be passed when building
# C ***AND*** C++ source files.
#
# NOTE: flag "-Wno-write-strings" removes warning about deprecated conversion
# from string constant to 'char*'
LOCAL_CFLAGS := -Wno-write-strings $(OPENGLES_DEF)
# The list of additional linker flags to be used when building your
# module. This is useful to pass the name of specific system libraries
# with the "-l" prefix.
LOCAL_LDLIBS := \
-llog $(OPENGLES_LIB)
LOCAL_LDFLAGS:= -Wl,--no-fix-cortex-a8
LOCAL_MODULE := libfastcvFeatDetect
LOCAL_CFLAGS := -Werror
LOCAL_SRC_FILES := ../About.cpp Corner.cpp
LOCAL_STATIC_LIBRARIES := libfastcv libfastcvUtils
LOCAL_SHARED_LIBRARIES := liblog
LOCAL_C_INCLUDES += $(JNI_DIR)/fastcv
LOCAL_C_INCLUDES += $(JNI_DIR)
LOCAL_MODULE_OWNER := qcom
LOCAL_PROPRIETARY_MODULE := true
include $(BUILD_SHARED_LIBRARY)
I've tried changing some things based on googling around, but so far nothing has worked. Does anyone have any advice?
LOCAL_PRELINK_MODULE:= false
This isn't an NDK sample. This is platform code. It is built with the AOSP build system, not the NDK. See https://source.android.com/setup/build/building for more information on that.
If you're trying to find NDK samples, see https://github.com/googlesamples/android-ndk.
If you really do need to build this non-NDK project with the NDK, read on.
Grepping for the error message in $NDK/build is often a good way to find more information:
$(call __ndk_warning,Module $(LOCAL_MODULE) depends on undefined modules: $(undefined_libs))
# https://github.com/android-ndk/ndk/issues/208
# ndk-build didn't used to fail the build for a missing dependency. This
# seems to have always been the behavior, so there's a good chance that
# there are builds out there that depend on this behavior (as of right now,
# anything using libc++ on ARM has this problem because of libunwind).
#
# By default we will abort in this situation because this is so completely
# broken. A user may define APP_ALLOW_MISSING_DEPS to "true" in their
# Application.mk or on the command line to revert to the old, broken
# behavior.
ifneq ($(APP_ALLOW_MISSING_DEPS),true)
$(call __ndk_error,Aborting (set APP_ALLOW_MISSING_DEPS=true to allow missing dependencies))
endif
This used to be silently ignored and it is now an error. It's pointing out the following bugs:
LOCAL_SHARED_LIBRARIES := liblog
This line does nothing. Delete it. System libraries are linked with LOCAL_LDLIBS, not LOCAL_SHARED_LIRBARIES. There will be a similar line somewhere else causing the error for GLESv2.
I am getting a compile error:
undefined reference to 'TangoService_getConfig' (MoreTeapotsNativeActivity.cpp)
ld returned 1 exit status (collect2.exe)
I am working with the tango sdk TangoSDK_Ikariotikos_C.zip in Visual Studio 2015 using VisualGDB. I have also replicated the error in Android Studio so it isn't IDE specific.
I have started with an NDK sample project to test a native activity deploys correctly and reduce complexity whilst troubleshooting. I have used VisualGDB MoreTeaPotsNativeActivity but any will do. The app compiles and runs on our ASUS Zenfone AR. Once I include tango_client_api.h and add the following code, I get the compile error:
TangoCoordinateFramePair* Tango_FramePair;
Tango_FramePair = new TangoCoordinateFramePair();
Tango_FramePair->base = TANGO_COORDINATE_FRAME_START_OF_SERVICE;
Tango_FramePair->target = TANGO_COORDINATE_FRAME_DEVICE;
TangoErrorType retval;
// Connect to tango service.
TangoConfig tango_config;
tango_config = TangoService_getConfig(TANGO_CONFIG_DEFAULT);
The Tango header file has an extern "C" wrapper for the C functions and the .o shows them demangled so I can't see why it is failing.
If I comment out...
//tango_config = TangoService_getConfig(TANGO_CONFIG_DEFAULT);
...it compiles and the enums show as locals in the debug so it seems to be a problem with functions: see image of locals here
I may be missing something glaringly obvious because android is fairly new to me. Perhaps someone can test the tangoSDK library with the same code block and spot the issue. It is frustrating that I cannot even link a library. I may be missing something simple but to me it is not obvious.
Any help will be greatly appreciated.
I contacted Sysprogs Support who gave me a link:
PREBUILT_SHARED_LIBRARY syntax
I hadn't realised the library wasn't being copied even though intellisense was reading the header. I needed to include a reference in the make file (android.mk) to copy the library (I copied Tango include and lib folders to the project jni folder):
include $(CLEAR_VARS)
LOCAL_MODULE := tango_client_api
LOCAL_SRC_FILES := ../jni/lib/$(TARGET_ARCH_ABI)/libtango_client_api.so
include $(PREBUILT_SHARED_LIBRARY)
I did the same with an additional block for the support library:
include $(CLEAR_VARS)
LOCAL_MODULE := tango_support_api
LOCAL_SRC_FILES := ../jni/lib/$(TARGET_ARCH_ABI)/libtango_support_api.so
include $(PREBUILT_SHARED_LIBRARY)
The main module just needs this:
LOCAL_SHARED_LIBRARIES := tango_client_api
The whole file looks like this:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := tango_client_api
LOCAL_SRC_FILES := ../jni/lib/$(TARGET_ARCH_ABI)/libtango_client_api.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := tango_support_api
LOCAL_SRC_FILES := ../jni/lib/$(TARGET_ARCH_ABI)/libtango_support_api.so
include $(PREBUILT_SHARED_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := MoreTeapotsNativeActivity
#VisualGDBAndroid: AutoUpdateSourcesInNextLine
LOCAL_SRC_FILES := gdbserver_launcher.c MoreTeapotsNativeActivity.cpp MoreTeapotsRenderer.cpp
LOCAL_C_INCLUDES := jni/include
LOCAL_LDLIBS := -llog -landroid -lEGL -lGLESv2
LOCAL_STATIC_LIBRARIES := cpufeatures android_native_app_glue ndk_helper
LOCAL_SHARED_LIBRARIES := tango_client_api
include $(BUILD_SHARED_LIBRARY)
$(call import-module,android/ndk_helper)
$(call import-module,android/native_app_glue)
$(call import-module,android/cpufeatures)
I didn't get this to work straight away when following the NDK examples but Sysprogs gave me feedback on my mistake which I will include.
I tried to include:
LOCAL_MODULE_FILENAME := tango_client_api
I left off the lib and .so as seemed to be convention. The .so was not necessary but taking lib off was changing the file name which caused a link error. That said, that line was unnecessary in the first place to I removed it. Then it removed the error relating to this. I have yet to see if the library works at runtime because I now get this error:
java.lang.UnsatisfiedLinkError: Unable to load native library "/data/app/com.sample.moreteapots-2/lib/arm64/libMoreTeapotsNativeActivity.so": dlopen failed: library "libbinder.so" not found
But this seems to relate to a problem with Android 7.0 platform 24 and higher where
the system prevents apps from dynamically linking against non-NDK libraries
from /Android/android-sdk/docs/about/versions/nougat/android-7.0-changes.html
I am trying to write an JNI file and it includes JNIHelp.h, however I met some error:
jni/JNIMPEG4Writer.cpp:4:21: fatal error: JNIHelp.h: No such file or directory
compilation terminated.
I guess I should add something to the Android.mk file, but I am not sure what should I add. This is my Android.mk file:
LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := JNIMPEG4Writer
LOCAL_STATIC_LIBRARIES := MPEG4Writer
#LOCAL_LDLIBS := -llog
LOCAL_LDLIBS += -L$(SYSROOT)/usr/lib –llog
LOCAL_SRC_FILES := JNIMPEG4Writer.cpp
include $(BUILD_SHARED_LIBRARY)
Does anyone have any ideas? Thanks!
JNIHelp.h is not part of NDK. You inherited some code from the Android platform. You will find other dependencies on non-public modules, most likely libcutils and libutils.
You have three options: build your code as a module of the platform, rewrite the code to only use public headers and libraries, or download parts of the platform, e.g. https://android.googlesource.com/platform/libnativehelper/, and arrange the include paths accordingly.
To satisfy the linker in the latter scenario, you can use adb pull /system/lib to acquire the versions of libnativehelper.so, libcutils.so, and other referenced non-public libraries. Note that ndk-build will complain about linking against these libraries.
i want to build the expolid code ( https://github.com/revolutionary/zergRush/blob/master/zergRush.c)
Android.mk
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := zergRush
LOCAL_SRC_FILES := zergRush.c
base :=E:\0.Android\system\core
#//base path include the android source code. but i forget the version .maybe 4.0.1
LOCAL_C_INCLUDES :=$(base)/include/
LOCAL_LDLIBS := -llog -lcutils
LOCAL_STATIC_LIBRARIES := libcutils libc
LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
LOCAL_MODULE_TAGS := eng debug
LOCAL_FORCE_STATIC_EXECUTABLE := true
include $(BUILD_EXECUTABLE)
this computer has installed ndk-r9b.
libcutils.so ： D:\android-ndk-r9b\platforms\android-19\arch-arm\usr\lib\rs
so i copy it to D:\android-ndk-r9b\platforms\android-19\arch-arm\usr\lib.
default.properties project.properties set target=19
but ndk-build failed .
D:\test\roottest\jni>ndk-build
[armeabi] Compile thumb : zergRush <= zergRush.c
[armeabi] Executable : zergRush
D:/android-ndk-r9b/toolchains/arm-linux-androideabi-4.6/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6
/../../../../arm-linux-androideabi/bin/ld.exe: error: cannot find -lcutils
D:/android-ndk-r9b/toolchains/arm-linux-androideabi-4.6/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6
/../../../../arm-linux-androideabi/bin/ld.exe: D:/test/roottest//obj/local/armeabi/objs/zergRush/zergRush.o: in function
do_fault:D:/test/roottest//jni/zergRush.c:226: error: undefined reference to 'socket_local_client'
D:/android-ndk-r9b/toolchains/arm-linux-androideabi-4.6/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6
/../../../../arm-linux-androideabi/bin/ld.exe: D:/test/roottest//obj/local/armeabi/objs/zergRush/zergRush.o: in function
main:D:/test/roottest//jni/zergRush.c:488: error: undefined reference to 'property_set'
D:/android-ndk-r9b/toolchains/arm-linux-androideabi-4.6/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6
/../../../../arm-linux-androideabi/bin/ld.exe: D:/test/roottest//obj/local/armeabi/objs/zergRush/zergRush.o: in function
main:D:/test/roottest//jni/zergRush.c:619: error: undefined reference to 'property_get'
collect2: ld returned 1 exit status
make.exe: *** [D:/test/roottest//obj/local/armeabi/zergRush] Error 1
i want to know how to include the use-defined libraray path or include libcutils.so and i can make the program . thanks.
The correct syntax in project.properties file is target=android-19. Make sure that you have it that way. If you want to make sure it works, open up your project in Eclipse, right-click on it and select to open its Properties.
Also, you've listed libcutils as both a shared library and a static library in your makefile. libc is also a shared library in Android system, so I'm pretty sure that you ought to do without the entire LOCAL_STATIC_LIBRARIES line.
If fixing the target still does not work, my advice would be to add libcutils.so as a "prebuilt" library (check your <ndk>/docs/PREBUILTS.html file to see how to do that).
Good luck!
I'm working on some code cuz I was asked to devlep c++ code about core part of a program.
But, it's my first time to use ndk so, I had some troubles and resolved that.
However, too difficult problem is coming to me. I had building my c++ code w/ ndk but,
it said,
.h:3:20: error: string: No such file or directory
.h:5: error: 'std::string' has not been declared
and any other errors about that.
Below is my 'Android.mk' file I wrote:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := clibs
LOCAL_SRC_FILES := sqlite3.c
LOCAL_LDLIBS := -llog
include $(BUILD_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_DEFAULT_CPP_EXTENSION := cpp
LOCAL_MODULE := mytweetlib
LOCAL_STATIC_LIBRARIES := clibs
LOCAL_SRC_FILES := Friend.cpp SQLiteDB.cpp Cursor.cpp DB4Friends.cpp ResultParser.cpp MyTweet.cpp Stub.cpp
include $(BUILD_SHARED_LIBRARY)
I tried to link the .c file(sqlite3.c) Making static library file w/ the other file(to be built to shared library).
Is there anyone knows about this? Even if it's just very little clue, plz give me that.
(I haven't been resolving this problem)
It looks like the NDK isn't being told to use stl port.
Try adding an Application.mk file containing APP_STL. This adds the stlport headers to the include path, and links against the libraries.
APP_STL := stlport_static
I would like to add further to Piklor answer.
Do not confuse with "Android.mk" file with "Application.mk" , in your jni folder.
Also your include should include string not string.h