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How to build opencv from source for android studio on windows?

I have to to build opencv from source due to opencv_contrib. Although I have tried many tutorials, I faild to build opencv from source.
The code I used:
cmake -G"MinGW Makefiles" -DANDROID_NDK=D:/androidNDK/android-ndk-r22b -DANDROID_SDK_ROOT=D:/android-sdk -DCMAKE_TOOLCHAIN_FILE=D:/androidNDK/android-ndk-r22b/build/cmake/android.toolchain.cmake -DBUILD_EXAMPLES=OFF -DBUILD_TESTS=OFF -DBUILD_PERF_TESTS=OFF D:/OpenCV455/opencv-4.5.5
General configuration:
-- General configuration for OpenCV 4.5.5 =====================================
-- Version control: unknown
--
-- Platform:
-- Timestamp: 2022-11-19T00:58:08Z
-- Host: Windows 10.0.19043 AMD64
-- Target: Android 1 armv7-a
-- CMake: 3.21.3
-- CMake generator: MinGW Makefiles
-- CMake build tool: D:/MinGW1/mingw64/bin/mingw32-make.exe
-- Configuration: Release
--
-- CPU/HW features:
-- Baseline: NEON
-- requested: DETECT
--
-- C/C++:
-- Built as dynamic libs?: NO
-- C++ standard: 11
-- C++ Compiler: D:/androidNDK/android-ndk-r22b/toolchains/llvm/prebuilt/windows-x86_64/bin/clang++.exe (ver 11.0.5)
-- C++ flags (Release): -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winconsistent-missing-override -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -Wno-deprecated-enum-enum-conversion -Wno-deprecated-anon-enum-enum-conversion -fdiagnostics-show-option -Qunused-arguments -fvisibility=hidden -fvisibility-inlines-hidden -Oz -DNDEBUG -DNDEBUG
-- C++ flags (Debug): -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winconsistent-missing-override -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -Wno-deprecated-enum-enum-conversion -Wno-deprecated-anon-enum-enum-conversion -fdiagnostics-show-option -Qunused-arguments -fvisibility=hidden -fvisibility-inlines-hidden -O0 -fno-limit-debug-info -DDEBUG -D_DEBUG
-- C Compiler: D:/androidNDK/android-ndk-r22b/toolchains/llvm/prebuilt/windows-x86_64/bin/clang.exe
-- C flags (Release): -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winconsistent-missing-override -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -Wno-deprecated-enum-enum-conversion -Wno-deprecated-anon-enum-enum-conversion -fdiagnostics-show-option -Qunused-arguments -fvisibility=hidden -fvisibility-inlines-hidden -Oz -DNDEBUG -DNDEBUG
-- C flags (Debug): -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winconsistent-missing-override -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -Wno-deprecated-enum-enum-conversion -Wno-deprecated-anon-enum-enum-conversion -fdiagnostics-show-option -Qunused-arguments -fvisibility=hidden -fvisibility-inlines-hidden -O0 -fno-limit-debug-info -DDEBUG -D_DEBUG
-- Linker flags (Release): -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id=sha1 -Wl,--no-rosegment -Wl,--fatal-warnings -Wl,--exclude-libs,libunwind.a -Wl,--no-undefined -Qunused-arguments -Wl,--as-needed
-- Linker flags (Debug): -Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id=sha1 -Wl,--no-rosegment -Wl,--fatal-warnings -Wl,--exclude-libs,libunwind.a -Wl,--no-undefined -Qunused-arguments -Wl,--as-needed
-- ccache: NO
-- Precompiled headers: NO
-- Extra dependencies: z dl m log
-- 3rdparty dependencies: libcpufeatures libprotobuf ade ittnotify libjpeg-turbo libwebp libpng libtiff libopenjp2 IlmImf quirc tegra_hal
--
-- OpenCV modules:
-- To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc java ml objdetect photo stitching video videoio
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: python2 python3 ts
-- Applications: android_examples
-- Documentation: NO
-- Non-free algorithms: NO
--
-- Android NDK: D:/androidNDK/android-ndk-r22b (ver 22.1.7171670)
-- Android ABI: armeabi-v7a
-- NDK toolchain: arm-linux-androideabi-clang
-- STL type: c++_static
-- Native API level: 16
-- Android SDK: D:/android-sdk (tools: 25.2.5 build tools: 33.0.0)
-- android tool: D:/android-sdk/tools/android.bat
-- SDK target: android-21
-- Projects build scripts: Ant/Eclipse compatible
--
-- GUI: NONE
--
-- Media I/O:
-- ZLib: z (ver 1.2.11)
-- JPEG: build-libjpeg-turbo (ver 2.1.2-62)
-- WEBP: build (ver encoder: 0x020f)
-- PNG: build (ver 1.6.37)
-- TIFF: build (ver 42 - 4.2.0)
-- JPEG 2000: build (ver 2.4.0)
-- OpenEXR: build (ver 2.3.0)
-- HDR: YES
-- SUNRASTER: YES
-- PXM: YES
-- PFM: YES
--
-- Video I/O:
--
-- Parallel framework: pthreads
--
-- Trace: YES (with Intel ITT)
--
-- Other third-party libraries:
-- Custom HAL: YES (carotene (ver 0.0.1))
-- Protobuf: build (3.19.1)
--
-- Python (for build): D:/Python37/python.exe
--
-- Java: export all functions
-- ant: D:/apache-ant-1.9.16/bin/ant.bat (ver 1.9.16)
-- Java wrappers: YES
-- Java tests: NO
--
-- Install to: D:/OpenCV455/buil36/install
-----------------------------------------------------------------**
The errors I get after running 'mingw32-make':
[97%] Built target opencv_java_android_source_copy
[97%]Generating OpenCV Android library project. SDK target:
[97%] Bui1ding OpenCV Android library project
[subant] No sub-builds to iterate on
Target '-code-gen' failed with message 'The following error occurred while executing this line:
D:\android-sdk\tools\ant\build.xml:655: null returned: -1073741819'.
Cannot execute '-compile' - '-code-gen' failed or was not executed.
Cannot execute '-dex' - '-compile' failed or was not executed.
Cannot execute '-package' - '-dex' failed or was not executed.
Cannot execute '-do-debug' - '-package' failed or was not executed.
Cannot execute 'debug' - '-do-debug' failed or was not executed.
BUILD FAILED
D:\android-sdk\tools\ant\build.xml:649: The following error occurred while executing this line:
D:\android-sdk\tools\ant\build.xml:655: null returned: -1073741819
Total time: 2 seconds
mingw32-make[2]: *** [modules\java\android_sdk\CMakeFiles\opencv_java_android.dir\build.make:77: bin/classes.jar] Error 1
mingw32-make[1]: *** [CMakeFiles\Makefile2:2689: modules/java/android_sdk/CMakeFiles/opencv_java_android.dir/all] Error 2
I get similar errors with ninja.
[1568/1595] Building OpenCV Android library project
FAILED: bin/classes.jar CMakeFiles/dephelper/opencv_java_android D:/OpenCV455/build36/bin/classes.jar D:/OpenCV455/build36/CMakeFiles/dephelper/opencv_java_android
cmd.exe /C "cd /D D:\OpenCV455\build36\android_sdk && D:\apache-ant-1.9.16\bin\ant.bat -q -noinput -k debug -Djava.target=1.6 -Djava.source=1.6 && D:\cmake-3.21.3\bin\cmake.exe -E touch D:/OpenCV455/build36/CMakeFiles/dephelper/opencv_java_android"
[subant] No sub-builds to iterate on
Target '-code-gen' failed with message 'The following error occurred while executing this line:
D:\android-sdk\tools\ant\build.xml:655: null returned: -1073741819'.
Cannot execute '-compile' - '-code-gen' failed or was not executed.
Cannot execute '-dex' - '-compile' failed or was not executed.
Cannot execute '-package' - '-dex' failed or was not executed.
Cannot execute '-do-debug' - '-package' failed or was not executed.
Cannot execute 'debug' - '-do-debug' failed or was not executed.
BUILD FAILED
D:\android-sdk\tools\ant\build.xml:649: The following error occurred while executing this line:
D:\android-sdk\tools\ant\build.xml:655: null returned: -1073741819
Total time: 1 second
[1572/1595] Building CXX object modules/gapi/CMakeFiles/opencv_perf_gapi.dir/perf/gpu/gapi_core_perf_tests_gpu.cpp.o
ninja: build stopped: subcommand failed.
here is the code with error.
in build.ninja file:
# Custom command for bin\classes.jar
build bin/classes.jar CMakeFiles/dephelper/opencv_java_android | ${cmake_ninja_workdir}bin/classes.jar ${cmake_ninja_workdir}CMakeFiles/dephelper/opencv_java_android: CUSTOM_COMMAND CMakeFiles/dephelper/opencv_java_android_source_copy android_sdk/build.xml android_sdk/local.properties android_sdk/proguard-project.txt android_sdk/project.properties android_sdk/AndroidManifest.xml || modules/java/android_sdk/opencv_java_android_source_copy modules/java_bindings_generator/gen_opencv_java_source
COMMAND = cmd.exe /C "cd /D D:\OpenCV455\build34\android_sdk && D:\apache-ant-1.9.16\bin\ant.bat -q -noinput -k debug -Djava.target=1.6 -Djava.source=1.6 && D:\cmake-3.21.3\bin\cmake.exe -E touch D:/OpenCV455/build34/CMakeFiles/dephelper/opencv_java_android"
DESC = Building OpenCV Android library project
restat = 1
in build.cmake file:
bin/classes.jar: CMakeFiles/dephelper/opencv_java_android_source_copy
bin/classes.jar: android_sdk/build.xml
bin/classes.jar: android_sdk/local.properties
bin/classes.jar: android_sdk/proguard-project.txt
bin/classes.jar: android_sdk/project.properties
bin/classes.jar: android_sdk/AndroidManifest.xml
#$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --blue --bold --progress-dir=D:\OpenCV455\build41\CMakeFiles --progress-num=$(CMAKE_PROGRESS_1) "Building OpenCV Android library project"
cd /d D:\OpenCV455\build41\android_sdk && call D:\apache-ant-1.9.16\bin\ant.bat -q -noinput -k debug -Djava.target=1.6 -Djava.source=1.6
cd /d D:\OpenCV455\build41\android_sdk && D:\cmake-3.21.3\bin\cmake.exe -E touch D:/OpenCV455/build41/CMakeFiles/dephelper/opencv_java_android
CMakeFiles/dephelper/opencv_java_android: bin/classes.jar
in build.xml file:
<do-only-if-manifest-hasCode
elseText="hasCode = false. Skipping aidl/renderscript/R.java">
<echo level="info">Handling aidl files...</echo>
<aidl executable="${aidl}"
framework="${project.target.framework.aidl}"
libraryBinAidlFolderPathRefid="project.library.bin.aidl.folder.path"
genFolder="${gen.absolute.dir}"
aidlOutFolder="${out.aidl.absolute.dir}">
<source path="${source.absolute.dir}"/>
</aidl>
How to fix it?
I try to find solutions for similar problem, and here maybe the only similar one. The developer suggetsted that:
Android SDK: not used, projects are not built
After that message Java-based projects should be skipped completely.
Try to upgrade your Android SDK "BuildTools".
CMAKE_CONFIG_GENERATOR="MinGW Makefiles"
There is ninja build tool in Android NDK. Use cmake -GNinja ... for better experience.
I don't quite grasp how to do, My build tools version is 33.0.0.

I found two options:
shell script (reference)
Install Git Bash and set it in PATH (C:\Program Files\Git\cmd)
Install Cmake 3.24.3 and set it in PATH (C:\Program Files\CMake\bin)
Install java and set it in PATH (C:\Program Files\Java\jdk1.8.0_202\bin), create variable JAVA_HOME(C:\Program Files\Java\jdk1.8.0_202)
Install C compiler (mingw or Visual Studio or etc.). If you use mingw, then you will need to install: mingw32-base-bin,
mingw32-gcc-fortran-bin,
mingw32-gcc-g++-bin,
mingw32-gcc-objc-bin,
msys-base-bin. And then in PATH add C:\MinGW\bin
You may also need WSL for Windows, but I did it just through Git Bash
Create a script in an empty folder and name it build.sh:
#!/bin/bash -e
myRepo=$(pwd)
CMAKE_GENERATOR_OPTIONS=-G"Visual Studio 17 2022"
#CMAKE_GENERATOR_OPTIONS=-G"Visual Studio 15 2017 Win64"
#CMAKE_GENERATOR_OPTIONS=(-G"Visual Studio 16 2019" -A x64) # CMake 3.14+ is required
if [ ! -d "$myRepo/gstreamer" ]; then
echo "cloning gstreamer"
git clone https://github.com/GStreamer/gstreamer.git
else
cd gstreamer
git pull --rebase
cd ..
fi
if [ ! -d "$myRepo/openexr" ]; then
echo "cloning openexr"
git clone https://github.com/AcademySoftwareFoundation/openexr.git
else
cd openexr
git pull --rebase
cd ..
fi
if [ ! -d "$myRepo/openblas" ]; then
echo "cloning openblas"
git clone https://github.com/xianyi/OpenBLAS.git
else
cd openblas
git pull --rebase
cd ..
fi
if [ ! -d "$myRepo/eigen" ]; then
echo "cloning eigen"
git clone https://gitlab.com/libeigen/eigen.git
else
cd eigen
git pull --rebase
cd ..
fi
if [ ! -d "$myRepo/opencv" ]; then
echo "cloning opencv"
git clone https://github.com/opencv/opencv.git
else
cd opencv
git pull --rebase
cd ..
fi
if [ ! -d "$myRepo/opencv_contrib" ]; then
echo "cloning opencv_contrib"
git clone https://github.com/opencv/opencv_contrib.git
else
cd opencv_contrib
git pull --rebase
cd ..
fi
if [ ! -d "$myRepo/tesseract" ]; then
echo "cloning tesseract"
git clone https://github.com/tesseract-ocr/tesseract.git
else
cd tesseract
git pull --rebase
cd ..
fi
RepoSource=opencv
mkdir -p build_opencv
pushd build_opencv
CMAKE_OPTIONS=( -DBUILD_opencv_world:BOOL=OFF -DBUILD_JAVA:BOOL=ON -DBUILD_PERF_TESTS:BOOL=OFF -DBUILD_TESTS:BOOL=OFF -DBUILD_DOCS:BOOL=OFF -DWITH_CUDA:BOOL=OFF -DBUILD_EXAMPLES:BOOL=OFF -DINSTALL_CREATE_DISTRIB=ON)
set -x
cmake "${CMAKE_GENERATOR_OPTIONS[#]}" "${CMAKE_OPTIONS[#]}" -DOPENCV_EXTRA_MODULES_PATH="$myRepo"/opencv_contrib/modules -DCMAKE_INSTALL_PREFIX="$myRepo/install/$RepoSource" "$myRepo/$RepoSource"
echo "************************* $Source_DIR -->debug"
cmake --build . --config debug
echo "************************* $Source_DIR -->release"
cmake --build . --config release
cmake --build . --target install --config release
cmake --build . --target install --config debug
popd
Open Git Bash, open the folder with our script in it and write bash build.sh
If you have following error syntax error: unexpected end of file, then here is the solution
As result we get opencv_java460.dll and opencv-460.jar
Cmake with ninja (taken from here, but modified)
Here I will describe what I used to build (it's not a fact that this is all I need or specific versions, but it worked for me):
Install Python and set it in PATH (C:\Users\volce\AppData\Local\Programs\Python\Python311\Scripts\ и C:\Users\volce\AppData\Local\Programs\Python\Python311\)
Install java 8 and set it in PATH and in JAVA_HOME (see above)
Install Cmake 3.24.3 (I haven't tried it on another version) and set it in PATH (see above)
Download NDK r25, unzip and add an environment variable ANDROID_NDK: C:\Users\volce\AppData\Local\Android\Sdk\ndk\android-ndk-r25b
Download SDK tools r25.2.3, platform-tools r25.0.1 and build-tools r25.0.1
In the SDK folder, replace the contents of the tools, build-tools and platform-tools folders with the downloaded ones
Also, in PATH I added: C:\Users\volce\AppData\Local\Android\Sdk\tools and C:\Users\volce\AppData\Local\Android\Sdk\platform-tools
Adding environment variables: ANDROID_HOME and ANDROID_SDK_ROOT, where we specify the path to the SDK (for example, C:\Users\volce\AppData\Local\Android\Sdk)
Download ant and set it in PATH (C:\apache-ant-1.10.12\bin и C:\apache-ant-1.10.12\lib) and create ANT_HOME (C:\apache-ant-1.10.12)
Download MinGw, install the necessary packages and set it in PATH (see above)
Download and install Visual Studio
What did I do next
Created a folder for our task
In it we do git clone https://github.com/opencv/opencv.git and git clone https://github.com/opencv/opencv_contrib.git
In the folder with opencv, go to samples\android and in the file CMakeLists.txt deleting add_subdirectory(15-puzzle) (because of this, I did not build)
Create a build folder in our root folder (which was created for building opencv)
We go into it and do git clone https://github.com/ninja-build/ninja.git
Open Visual Studio. In it: Tools->Command Line->Developer Command Line. In the command line, write the path to the created folder build and write python configure.py --bootstrap. This is how we configured ninja
Being in our build folder in the console, we write the following(don't forget to change the paths to your own):
cmake -GNinja -DCMAKE_MAKE_PROGRAM=E:\OpenCV\build\ninja.exe -DCMAKE_INSTALL_PREFIX=E:\OpenCV\install -DANDROID_PROJECTS_BUILD_TYPE="ANT" -DBUILD_ANDROID_PROJECTS=ON -DBUILD_EXAMPLES:BOOL=OFF -DBUILD_TESTS:BOOL=OFF -DBUILD_PERF_TESTS:BOOL=OFF -DBUILD_JAVA=ON -DBUILD_opencv_java=ON -DBUILD_SHARED_LIBS:BOOL=OFF -DBUILD_FAT_JAVA_LIB=ON -DBUILD_PYTHON:BOOL=OFF -DINSTALL_ANDROID_EXAMPLES:BOOL=OFF -DANDROID_EXAMPLES_WITH_LIBS:BOOL=OFF -DBUILD_DOCS:BOOL=OFF -DWITH_OPENCL=ON -DANDROID_NDK_HOST_X64=ON -DANDROID_NDK=C:/Users/volce/AppData/Local/Android/Sdk/ndk/android-ndk-r25b/ -DANDROID_SDK=C:/Users/volce/AppData/Local/Android/Sdk -DCMAKE_TOOLCHAIN_FILE=C:/Users/volce/AppData/Local/Android/Sdk/ndk/android-ndk-r25b/build/cmake/android.toolchain.cmake -DANDROID_TOOLCHAIN=clang -DANDROID_STL=c++_static -DANDROID_ARM_NEON=ON -DANDROID_ABI='arm64-v8a, armeabi-v7a, x86_64, x86' -DANDROID_NDK_HOST_X64=ON -DBUILD_opencv_python3:BOOL=OFF -DBUILD_opencv_python2:BOOL=OFF -DOPENCV_EXTRA_MODULES_PATH=E:/OpenCV/opencv_contrib/modules -DOPENCV_ENABLE_NONFREE=ON -DANDROID_NATIVE_API_LEVEL=25 -DANDROID_TARGET_SDK_VERSION=32 -DANDROID_MIN_SDK_VERSION=21 E:\OpenCV\opencv
After execution , write ninja -j8 in console
After waiting for the execution of the previous command, we write ninja install
As result we get the OpenCV SDK for Android
How to integrate OpenCV 4.6.0 in your project -> https://www.youtube.com/watch?v=bR7lL886-uc

bz2 module fails when building Python 3.7

I'm trying to cross compile Python 3.7 for Android. I see in my output that bz2 if failing with the following error
building '_bz2' extension
/home/dematic/SPE/python3-android/sdk/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -isystem /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/include -isystem /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/include/openssl -no-integrated-as -I. -I./Include -target aarch64-none-linux-androideabi22 -target aarch64-none-linux-androideabi22 -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -fPIC -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -I./Include -I. -I/home/dematic/SPE/python3-android/src/Python-3.7.3/Include -I/home/dematic/SPE/python3-android/src/Python-3.7.3 -c /home/dematic/SPE/python3-android/src/Python-3.7.3/Modules/_bz2module.c -o build/temp.linux-aarch64-3.7/home/dematic/SPE/python3-android/src/Python-3.7.3/Modules/_bz2module.o
/home/dematic/SPE/python3-android/sdk/android-ndk-r19c/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -isystem /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/include -isystem /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/include/openssl -no-integrated-as -shared -target aarch64-none-linux-androideabi22 -fuse-ld=lld -L /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/lib -target aarch64-none-linux-androideabi22 -fuse-ld=lld -L /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/lib -target aarch64-none-linux-androideabi22 -fuse-ld=lld -L /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/lib -fPIC -target aarch64-none-linux-androideabi22 build/temp.linux-aarch64-3.7/home/dematic/SPE/python3-android/src/Python-3.7.3/Modules/_bz2module.o -L. -L/home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/lib -lbz2 -lpython3.7m -o build/lib.linux-aarch64-3.7/_bz2.cpython-37m.so
ld.lld: error: /home/dematic/SPE/python3-android/build/19c-22-aarch64-linux-androideabi-4.9/lib/libbz2.a(bzlib.o) is incompatible with aarch64linux
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I am building bzip2 1.0.6 without any issues, but I assume I'm not linking to it correctly or some other issue. Is there some sort of other architecture I'm supposed to be building?
This is the project I'm trying to build with
https://github.com/GRRedWings/python3-android

I'm trying to cross compile Python 3.7 for Android. I see in my output that bz2 if failing with the following error
The Bzip2 makefiles are not written for cross-compiles. They effectively ignore a user's flags like CFLAGS and LDFLAGS. The makefiles actually blows away a user's CFLAGS and sets it to CFLAGS=-Wall -Winline -O2 -g $(BIGFILES). Your flags like -target aarch64-none-linux-androideabi22 are not used.
There are two Makefiles in play. One is called Makefile and it builds the static library, if I recall correctly. The second is Makefile-libbz2_so, and it build the shared object. You need to fix the omissions and apply the fixes to both makefiles.
You should probably use a patched Bzip like bzip2-noloader. It honors a user's CFLAGS, CXXFLAGS, LDFLAGS, etc. The check-in of interest is Commit 34d170f31106.
The makefile recipes in bzip2-noloader look similar to the following. They preserve Seward's original settings in BZIP_CFLAGS. But they also utilize CPPFLAGS and allow a user override in CFLAGS. The override will pickup your flags like -target aarch64-none-linux-androideabi22.
blocksort.o: blocksort.c
$(CC) $(CPPFLAGS) $(BZIP_CFLAGS) $(CFLAGS) -c blocksort.c
Programs use LDFLAGS as expected:
bzip2: libbz2.a bzip2.o
$(CC) $(CPPFLAGS) $(BZIP_CFLAGS) $(CFLAGS) $(LDFLAGS) -o bzip2 bzip2.o -L. -lbz2
Finally, the bzip2-noloader fork also honor's PREFIX, DESTDIR, etc. So you can perform staged installs, too.
I am building bzip2 1.0.6 without any issues ...
You are probably building for i686 or x86_64, and not Aarch64. The problem does not surface until link time. You can use objdump to inspect the object files, if interested.
Also note the makefile does this:
CC=gcc
AR=ar
RANLIB=ranlib
LDFLAGS=
You may need to tweak those variable assignments, too. Sometimes ar and ranlib use unusual names, like ranlib-5.0. And also be sure the tools are on-path.
The way to write makefiles to avoid these sorts of problems is detailed at 7.2.3 Variables for Specifying Commands in the GNU Coding Standards. The short of it is, (1) leave CFLAGS (and friends) for the user; and (2) if a flag is needed, then always supply it.
The GNU Coding Standards uses this as an example:
CFLAGS = -g
ALL_CFLAGS = -I. $(CFLAGS)
.c.o:
$(CC) -c $(CPPFLAGS) $(ALL_CFLAGS) $<
Users can override the default CFLAGS of -g, and -I is always added because it is needed for the compile.

Compile external module for Android

I am trying to compile a driver as a loadable module but whenever I adb shell into my phone and do an insmod test.ko I get the error message insmod: failed to load /data/local/tmp/test.ko: Exec format error. Grep'ing dmesg I find the following log: test: no symbol version for module_layout.
I've done quite a bit of googling [Ref] [Ref] [Ref] [Ref] [Ref] and reading the linux kbuild documentation txt files [Ref] [Ref] to no avail, so if someone knows the answer it'd be fab :) (I've only referenced the most helpful links I found).
What I've done so far is this:
I have an Qualcomm Aurora checkout and in the kernel directory I type the following
cp arch/arm64/configs/gemini_user_defconfig .config [B]# Has CONFIG_MODVERSIONS enabled and MODULE_SIG*=n[/B]
yes "" | make oldconfig ARCH=arm64 CROSS_COMPILE=aarch64-linux-android- V=1
make prepare ARCH=arm64 CROSS_COMPILE=aarch64-linux-android- V=1
make scripts ARCH=arm64 CROSS_COMPILE=aarch64-linux-android- V=1
make modules ARCH=arm64 CROSS_COMPILE=aarch64-linux-android- V=1
I have my PATH set to point to /MyAOSBDir/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin so I pick up the correct toolchain.
At this point appears to be well. In my kernel directory I have Module.symvers, so I appear to be set.
Now to the directory I have set up outside of this build tree with a dummy test... The Makefile looks like this:
KERNEL_DIR:=/solomon-build/MiNote2AOSB/kernel/
obj-m += test.o
PWD := $(shell pwd)
.PHONY: all
all:
$(MAKE) M=$(PWD) ARCH=arm64 CROSS_COMPILE=aarch64-linux-android- -C $(KERNEL_DIR) modules V=1
clean:
$(MAKE) M=$(PWD) -C $(KERNEL_DIR) clean
The driver is just a dummy:
#include <linux/module.h> /* Needed by all modules */
#include <linux/kernel.h> /* Needed for KERN_INFO */
#include <linux/init.h> /* Needed for the macros */
static int __init hello_start(void)
{
printk(KERN_INFO "Hello world\n");
return 0;
}
static void __exit hello_end(void)
{
printk(KERN_INFO "Goodbye world\n");
}
module_init(hello_start);
module_exit(hello_end);
I do make make all at the comment line and get this output:
make M=/solomon-build/build_mxt_kmod ARCH=arm64 CROSS_COMPILE=aarch64-linux-android- -C /solomon-build/MiNote2AOSB/kernel/ modules V=1
make[1]: Entering directory `/solomon-build/MiNote2AOSB/kernel'
test -e include/generated/autoconf.h -a -e include/config/auto.conf || ( \
echo >&2; \
echo >&2 " ERROR: Kernel configuration is invalid."; \
echo >&2 " include/generated/autoconf.h or include/config/auto.conf are missing.";\
echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
echo >&2 ; \
/bin/false)
mkdir -p /solomon-build/build_mxt_kmod/.tmp_versions ; rm -f /solomon-build/build_mxt_kmod/.tmp_versions/*
make -f ./scripts/Makefile.build obj=/solomon-build/build_mxt_kmod
./scripts/gcc-wrapper.py aarch64-linux-android-gcc -Wp,-MD,/solomon-build/build_mxt_kmod/.test.o.d -nostdinc -isystem /solomon-build/MiNote2AOSB/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/../lib/gcc/aarch64-linux-android/4.9.x-google/include -I./arch/arm64/include -Iarch/arm64/include/generated -Iinclude -I./arch/arm64/include/uapi -Iarch/arm64/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 -mgeneral-regs-only -fno-pic -fno-delete-null-pointer-checks -Os -Wno-maybe-uninitialized --param=allow-store-data-races=0 -Wframe-larger-than=2048 -fstack-protector -Wno-unused-but-set-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(test)" -D"KBUILD_MODNAME=KBUILD_STR(test)" -c -o /solomon-build/build_mxt_kmod/.tmp_test.o /solomon-build/build_mxt_kmod/test.c
(cat /dev/null; echo kernel//solomon-build/build_mxt_kmod/test.ko;) > /solomon-build/build_mxt_kmod/modules.order
make -f ./scripts/Makefile.modpost
find /solomon-build/build_mxt_kmod/.tmp_versions -name '*.mod' | xargs -r grep -h '\.ko$' | sort -u | sed 's/\.ko$/.o/' | scripts/mod/modpost -m -i ./Module.symvers -I /solomon-build/build_mxt_kmod/Module.symvers -o /solomon-build/build_mxt_kmod/Module.symvers -S -E -w -s -T -
./scripts/gcc-wrapper.py aarch64-linux-android-gcc -Wp,-MD,/solomon-build/build_mxt_kmod/.test.mod.o.d -nostdinc -isystem /solomon-build/MiNote2AOSB/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/../lib/gcc/aarch64-linux-android/4.9.x-google/include -I./arch/arm64/include -Iarch/arm64/include/generated -Iinclude -I./arch/arm64/include/uapi -Iarch/arm64/include/generated/uapi -I./include/uapi -Iinclude/generated/uapi -include ./include/linux/kconfig.h -D__KERNEL__ -mlittle-endian -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -std=gnu89 -mgeneral-regs-only -fno-pic -fno-delete-null-pointer-checks -Os -Wno-maybe-uninitialized --param=allow-store-data-races=0 -Wframe-larger-than=2048 -fstack-protector -Wno-unused-but-set-variable -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -g -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -Werror=implicit-int -Werror=strict-prototypes -Werror=date-time -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(test.mod)" -D"KBUILD_MODNAME=KBUILD_STR(test)" -DMODULE -c -o /solomon-build/build_mxt_kmod/test.mod.o /solomon-build/build_mxt_kmod/test.mod.c
aarch64-linux-android-ld -EL -r -T ./scripts/module-common.lds --build-id --fix-cortex-a53-843419 -o /solomon-build/build_mxt_kmod/test.ko /solomon-build/build_mxt_kmod/test.o /solomon-build/build_mxt_kmod/test.mod.o
make[1]: Leaving directory `/solomon-build/MiNote2AOSB/kernel'
So, there are no messages saying there is a missing Module.symvers, so that's good, and I do get a built .ko file.
What I don't understand is the message ERROR: Kernel configuration is invalid. The files it is talking about exist, so I know they have been created in my kernel build.
Anyway, trying to insmod this onto the phone gives the message I mentioned previously. If I cat Module.symvers I see:
0xff924338 backlight_force_update drivers/video/backlight/backlight EXPORT_SYMBOL
0x30254daf test_iosched_register block/test-iosched EXPORT_SYMBOL
<snip>
0xdd502540 backlight_device_unregister drivers/video/backlight/backlight EXPORT_SYMBOL
0x9939eba0 backlight_unregister_notifier drivers/video/backlight/backlight EXPORT_SYMBOL
So no symbol module_layout in the file, and thus no CRC, which is what I presume is creating the error message?
Any clues would be much appreciated, thank you.
Oh I should also mention that the module and kernel vermagic match:
# modinfo /data/local/tmp/test.ko
filename: /data/local/tmp/test.ko
depends:
vermagic: 3.18.20-mytestkernel-perf-g671c431-dirty SMP preempt mod_unload modversions aarch64
# uname -a
Linux localhost 3.18.20-mytestkernel-perf-g671c431-dirty #1 SMP PREEMPT Mon Jun 5 15:46:13 BST 2017 aarch64
*EDIT - FOUND SOLUTION - NEW QUESTON *:
I've gotten much further since posting. What I realised was, was that the compilation of the kernel using the Android build system is producing a radically different Module.symvers one from my method above (for some reason it took a while for the penny to drop and for me to check the Andoird build output - duh!). In fact, I've realised I always had the Module.symvers file, it was just located in ../out/target/product/msm8996/obj/KERNEL_OBJ/Module.symvers relative to the kernel dir. Copying this file into kernel and re-running my module build now produces a module that loads correctly :)
So, I guess the question becomes, why do the two files differ? What is Android doing differently? I assume it is setting up some more detailed config, but how/what/why?

So, the answer was relatively simple in the end...
I just use the normal Android build process of sourcing envsetup.sh, running lunch and then building the kernel:
. build/envsetup.sh
lunch msm8996-userdebug
make kernel -j16
(Remember to make sure in your .config file to set CONFIG_MODULES=y and set any kernel drivers to =m if you want them as modules).
In the separate directory, not in the Android build tree I now have my new module and the following Makefile, which now looks like this:
MY_ANDROID_ROOT_DIR :=/path/to/my/android/checkout
KERNEL_DIR:=$(MY_ANDROID_ROOT_DIR)/kernel
obj-m += my_driver.o
PWD := $(shell pwd)
.PHONY: all
all:
$(MAKE) \
M=$(PWD) \
ARCH=arm64 \
CROSS_COMPILE=aarch64-linux-android- \
-C $(KERNEL_DIR) \
modules \
V=1 \
O=$(MY_ANDROID_ROOT_DIR)/out/target/product/msm8996/obj/KERNEL_OBJ
clean:
$(MAKE) M=$(PWD) -C $(KERNEL_DIR) clean
The make all output will still be in your modules directory (not the Android output dir).
This is basically identical to all of the examples relating to pure Linux builds. The only extra bit of information I needed to provide was where the Android build system output its build files, which is O=$(MY_ANDROID_ROOT_DIR)/out/target/product/<your-product>/obj/KERNEL_OBJ.
The O= define tells Make where to find the output of the kernel build.
The 'V=1` define tells Make to output verbose build information.
modules is a kernel target that will build you module defined in the Makefile variable obj-m. This variable "specifies the object files which are built as loadable kernel modules".
Now my modules build fine and I don't need to worry about independently compiling the kernel or anything like that to fix missing file messages (although it will still output about autoconf.h, which I don't understand because it exists in my tree and doesn't seem to stop my modules working).
PS If you module includes more than one file define obj-m += my_driver.o and then my_driver-m:= <extra objects>.

error linking to libgcc.a when cross-compiling for Android, but symbols exists?

I am trying to cross-compile a very simple program for Android that worked with android-ndk-r6b and prior, but does not work on android-ndk-r7 and newer:
int main() {
;
return 0;
}
I was able to do so using an "agcc" script on an older version of Android that can be found here. I'm sincerely not trying to use an Android.mk file to build this. I know I can, but this is part of something much larger I'm working on. So take it for face-value that I am trying to cross-compile this in a different way.
Anyway, I try to build and get:
$ arm-eabi-gcc -o test test.c
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: warning: /tmp/cc00QD3x.o uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail
/tmp/cc00QD3x.o:(.ARM.exidx.text.main+0x0): undefined reference to `__aeabi_unwind_cpp_pr0'
collect2: ld returned 1 exit status
So, the key error is the undefined reference to __aeabi_unwind_cpp_pr0.
After doing some digging, this symbol is in libgcc.a which I am linking to:
$ arm-eabi-nm /home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/lib/gcc/arm-eabi/4.4.3/libgcc.a | grep __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
00000590 T __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
U __aeabi_unwind_cpp_pr0
It has a 'T' which tells me that it is in the code somewhere, right?
Here is the verbose output of arm-eabi-gcc which shows I am in fact linking to this library:
Using built-in specs.
Target: arm-eabi
Configured with: /home/jingyu/projects/gcc/android-toolchainsrc/build/../gcc/gcc-4.4.3/configure --prefix=/usr/local --target=arm-eabi --host=x86_64-linux-gnu --build=x86_64-linux-gnu --with-gnu-as --with-gnu-ld --enable-languages=c,c++ --with-gmp=/home/jingyu/projects/gcc/toolchain_build/obj/temp-install --with-mpfr=/home/jingyu/projects/gcc/toolchain_build/obj/temp-install --disable-libssp --enable-threads --disable-nls --disable-libmudflap --disable-libgomp --disable-libstdc__-v3 --disable-sjlj-exceptions --disable-shared --disable-tls --with-float=soft --with-fpu=vfp --with-arch=armv5te --enable-target-optspace --with-abi=aapcs --with-gcc-version=4.4.3 --with-binutils-version=2.19 --with-gmp-version=4.2.4 --with-mpfr-version=2.4.1 --with-gdb-version=7.1.x --with-arch=armv5te --with-multilib-list=mandroid --with-sysroot=/usr/local/google/home/android/cupcake_rel_root --program-transform-name='s&^&arm-eabi-&'
Thread model: single
gcc version 4.4.3 (GCC)
COLLECT_GCC_OPTIONS='-o' 'test' '-I/home/gnychis/Documents/android/os/system/core/include' '-I/home/gnychis/Documents/android/os/hardware/libhardware/include' '-I/home/gnychis/Documents/android/os/hardware/ril/include' '-I/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/include' '-I/home/gnychis/Documents/android/os/dalvik/libnativehelper/include' '-I/home/gnychis/Documents/android/os/frameworks/base/include' '-I/home/gnychis/Documents/android/os/external/skia/include' '-I/home/gnychis/Documents/android/os/out/target/product/generic/obj/include' '-I/home/gnychis/Documents/android/os/bionic/libc/arch-arm/include' '-I/home/gnychis/Documents/android/os/bionic/libc/include' '-I/home/gnychis/Documents/android/os/bionic/libstdc++/include' '-I/home/gnychis/Documents/android/os/bionic/libc/kernel/common' '-I/home/gnychis/Documents/android/os/bionic/libc/kernel/arch-arm' '-I/home/gnychis/Documents/android/os/bionic/libm/include' '-I/home/gnychis/Documents/android/os/bionic/libm/include/arch/arm' '-I/home/gnychis/Documents/android/os/bionic/libthread_db/include' '-I/home/gnychis/Documents/android/os/bionic/libm/arm' '-I/home/gnychis/Documents/android/os/bionic/libm' '-I/home/gnychis/Documents/android/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates' '-D__ARM_ARCH_5__' '-D__ARM_ARCH_5T__' '-D__ARM_ARCH_5E__' '-D__ARM_ARCH_5TE__' '-DANDROID' '-DSK_RELEASE' '-DNDEBUG' '-UDEBUG' '-march=armv5te' '-mtune=xscale' '-msoft-float' '-mthumb-interwork' '-fpic' '-fno-exceptions' '-ffunction-sections' '-funwind-tables' '-fstack-protector' '-fmessage-length=0' '-Bdynamic' '-L/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib' '-nostdlib' '-v' '-mfpu=vfp' '-mabi=aapcs'
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../libexec/gcc/arm-eabi/4.4.3/cc1 -quiet -v -I/home/gnychis/Documents/android/os/system/core/include -I/home/gnychis/Documents/android/os/hardware/libhardware/include -I/home/gnychis/Documents/android/os/hardware/ril/include -I/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/include -I/home/gnychis/Documents/android/os/dalvik/libnativehelper/include -I/home/gnychis/Documents/android/os/frameworks/base/include -I/home/gnychis/Documents/android/os/external/skia/include -I/home/gnychis/Documents/android/os/out/target/product/generic/obj/include -I/home/gnychis/Documents/android/os/bionic/libc/arch-arm/include -I/home/gnychis/Documents/android/os/bionic/libc/include -I/home/gnychis/Documents/android/os/bionic/libstdc++/include -I/home/gnychis/Documents/android/os/bionic/libc/kernel/common -I/home/gnychis/Documents/android/os/bionic/libc/kernel/arch-arm -I/home/gnychis/Documents/android/os/bionic/libm/include -I/home/gnychis/Documents/android/os/bionic/libm/include/arch/arm -I/home/gnychis/Documents/android/os/bionic/libthread_db/include -I/home/gnychis/Documents/android/os/bionic/libm/arm -I/home/gnychis/Documents/android/os/bionic/libm -I/home/gnychis/Documents/android/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates -iprefix /home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/ -D__USES_INITFINI__ -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -DANDROID -DSK_RELEASE -DNDEBUG -UDEBUG test.c -quiet -dumpbase test.c -march=armv5te -mtune=xscale -msoft-float -mthumb-interwork -mfpu=vfp -mabi=aapcs -auxbase test -version -fpic -fno-exceptions -ffunction-sections -funwind-tables -fstack-protector -fmessage-length=0 -o /tmp/ccIIp1N2.s
GNU C (GCC) version 4.4.3 (arm-eabi)
compiled by GNU C version 4.2.4 (Ubuntu 4.2.4-1ubuntu4), GMP version 4.2.4, MPFR version 2.4.1.
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=128206
ignoring nonexistent directory "/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/include"
ignoring nonexistent directory "/usr/local/google/home/android/cupcake_rel_root/usr/local/include"
ignoring duplicate directory "/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/../../lib/gcc/arm-eabi/4.4.3/include"
ignoring duplicate directory "/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/../../lib/gcc/arm-eabi/4.4.3/include-fixed"
ignoring nonexistent directory "/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/../../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/include"
ignoring nonexistent directory "/usr/local/google/home/android/cupcake_rel_root/usr/include"
ignoring nonexistent directory "/home/gnychis/Documents/android/os/out/target/product/generic/obj/include"
ignoring nonexistent directory "/home/gnychis/Documents/android/os/bionic/libm/include/arch/arm"
ignoring nonexistent directory "/home/gnychis/Documents/android/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates"
#include "..." search starts here:
#include <...> search starts here:
/home/gnychis/Documents/android/os/system/core/include
/home/gnychis/Documents/android/os/hardware/libhardware/include
/home/gnychis/Documents/android/os/hardware/ril/include
/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/include
/home/gnychis/Documents/android/os/dalvik/libnativehelper/include
/home/gnychis/Documents/android/os/frameworks/base/include
/home/gnychis/Documents/android/os/external/skia/include
/home/gnychis/Documents/android/os/bionic/libc/arch-arm/include
/home/gnychis/Documents/android/os/bionic/libc/include
/home/gnychis/Documents/android/os/bionic/libstdc++/include
/home/gnychis/Documents/android/os/bionic/libc/kernel/common
/home/gnychis/Documents/android/os/bionic/libc/kernel/arch-arm
/home/gnychis/Documents/android/os/bionic/libm/include
/home/gnychis/Documents/android/os/bionic/libthread_db/include
/home/gnychis/Documents/android/os/bionic/libm/arm
/home/gnychis/Documents/android/os/bionic/libm
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/include
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/include-fixed
End of search list.
GNU C (GCC) version 4.4.3 (arm-eabi)
compiled by GNU C version 4.2.4 (Ubuntu 4.2.4-1ubuntu4), GMP version 4.2.4, MPFR version 2.4.1.
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=128206
Compiler executable checksum: c575b4a30c8a516a84cf6e49f2cb23d1
COLLECT_GCC_OPTIONS='-o' 'test' '-I/home/gnychis/Documents/android/os/system/core/include' '-I/home/gnychis/Documents/android/os/hardware/libhardware/include' '-I/home/gnychis/Documents/android/os/hardware/ril/include' '-I/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/include' '-I/home/gnychis/Documents/android/os/dalvik/libnativehelper/include' '-I/home/gnychis/Documents/android/os/frameworks/base/include' '-I/home/gnychis/Documents/android/os/external/skia/include' '-I/home/gnychis/Documents/android/os/out/target/product/generic/obj/include' '-I/home/gnychis/Documents/android/os/bionic/libc/arch-arm/include' '-I/home/gnychis/Documents/android/os/bionic/libc/include' '-I/home/gnychis/Documents/android/os/bionic/libstdc++/include' '-I/home/gnychis/Documents/android/os/bionic/libc/kernel/common' '-I/home/gnychis/Documents/android/os/bionic/libc/kernel/arch-arm' '-I/home/gnychis/Documents/android/os/bionic/libm/include' '-I/home/gnychis/Documents/android/os/bionic/libm/include/arch/arm' '-I/home/gnychis/Documents/android/os/bionic/libthread_db/include' '-I/home/gnychis/Documents/android/os/bionic/libm/arm' '-I/home/gnychis/Documents/android/os/bionic/libm' '-I/home/gnychis/Documents/android/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates' '-D__ARM_ARCH_5__' '-D__ARM_ARCH_5T__' '-D__ARM_ARCH_5E__' '-D__ARM_ARCH_5TE__' '-DANDROID' '-DSK_RELEASE' '-DNDEBUG' '-UDEBUG' '-march=armv5te' '-mtune=xscale' '-msoft-float' '-mthumb-interwork' '-fpic' '-fno-exceptions' '-ffunction-sections' '-funwind-tables' '-fstack-protector' '-fmessage-length=0' '-Bdynamic' '-L/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib' '-nostdlib' '-v' '-mfpu=vfp' '-mabi=aapcs'
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/as -v -I/home/gnychis/Documents/android/os/system/core/include -I/home/gnychis/Documents/android/os/hardware/libhardware/include -I/home/gnychis/Documents/android/os/hardware/ril/include -I/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/include -I/home/gnychis/Documents/android/os/dalvik/libnativehelper/include -I/home/gnychis/Documents/android/os/frameworks/base/include -I/home/gnychis/Documents/android/os/external/skia/include -I/home/gnychis/Documents/android/os/out/target/product/generic/obj/include -I/home/gnychis/Documents/android/os/bionic/libc/arch-arm/include -I/home/gnychis/Documents/android/os/bionic/libc/include -I/home/gnychis/Documents/android/os/bionic/libstdc++/include -I/home/gnychis/Documents/android/os/bionic/libc/kernel/common -I/home/gnychis/Documents/android/os/bionic/libc/kernel/arch-arm -I/home/gnychis/Documents/android/os/bionic/libm/include -I/home/gnychis/Documents/android/os/bionic/libm/include/arch/arm -I/home/gnychis/Documents/android/os/bionic/libthread_db/include -I/home/gnychis/Documents/android/os/bionic/libm/arm -I/home/gnychis/Documents/android/os/bionic/libm -I/home/gnychis/Documents/android/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates -march=armv5te -mthumb-interwork -mfloat-abi=soft -mfpu=vfp -meabi=5 -o /tmp/ccGAKjxX.o /tmp/ccIIp1N2.s
GNU assembler version 2.19 (arm-eabi) using BFD version (GNU Binutils) 2.19
COMPILER_PATH=/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../libexec/gcc/arm-eabi/4.4.3/:/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../libexec/gcc/:/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/
LIBRARY_PATH=/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/:/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/:/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/lib/
COLLECT_GCC_OPTIONS='-o' 'test' '-I/home/gnychis/Documents/android/os/system/core/include' '-I/home/gnychis/Documents/android/os/hardware/libhardware/include' '-I/home/gnychis/Documents/android/os/hardware/ril/include' '-I/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/include' '-I/home/gnychis/Documents/android/os/dalvik/libnativehelper/include' '-I/home/gnychis/Documents/android/os/frameworks/base/include' '-I/home/gnychis/Documents/android/os/external/skia/include' '-I/home/gnychis/Documents/android/os/out/target/product/generic/obj/include' '-I/home/gnychis/Documents/android/os/bionic/libc/arch-arm/include' '-I/home/gnychis/Documents/android/os/bionic/libc/include' '-I/home/gnychis/Documents/android/os/bionic/libstdc++/include' '-I/home/gnychis/Documents/android/os/bionic/libc/kernel/common' '-I/home/gnychis/Documents/android/os/bionic/libc/kernel/arch-arm' '-I/home/gnychis/Documents/android/os/bionic/libm/include' '-I/home/gnychis/Documents/android/os/bionic/libm/include/arch/arm' '-I/home/gnychis/Documents/android/os/bionic/libthread_db/include' '-I/home/gnychis/Documents/android/os/bionic/libm/arm' '-I/home/gnychis/Documents/android/os/bionic/libm' '-I/home/gnychis/Documents/android/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates' '-D__ARM_ARCH_5__' '-D__ARM_ARCH_5T__' '-D__ARM_ARCH_5E__' '-D__ARM_ARCH_5TE__' '-DANDROID' '-DSK_RELEASE' '-DNDEBUG' '-UDEBUG' '-march=armv5te' '-mtune=xscale' '-msoft-float' '-mthumb-interwork' '-fpic' '-fno-exceptions' '-ffunction-sections' '-funwind-tables' '-fstack-protector' '-fmessage-length=0' '-Bdynamic' '-L/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib' '-nostdlib' '-v' '-mfpu=vfp' '-mabi=aapcs'
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../libexec/gcc/arm-eabi/4.4.3/collect2 --sysroot=/usr/local/google/home/android/cupcake_rel_root -X -o test -L/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib -L/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3 -L/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc -L/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/lib -T /home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/arm-eabi/lib/ldscripts/armelf.x -dynamic-linker /system/bin/linker --gc-sections -z nocopyreloc --no-undefined -rpath-link=/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib /home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib/crtend_android.o /home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib/crtbegin_dynamic.o /home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/lib32/libiberty.a /home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/lib/gcc/arm-eabi/4.4.3/libgcc.a -lc -lm /tmp/ccGAKjxX.o
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/bin/ld: warning: /tmp/ccGAKjxX.o uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail
/tmp/ccGAKjxX.o:(.ARM.exidx.text.main+0x0): undefined reference to `__aeabi_unwind_cpp_pr0'
collect2: ld returned 1 exit status
So I'm just a bit unsure why I am getting this undefined reference. I have used this same method of cross-compiling with a slightly different version of Android and had no issue.
Does anything stand out to anyone?
EDIT: The actual command generated is the following:
arm-eabi-gcc -o test -I/home/gnychis/Documents/android/os/system/core/include -I/home/gnychis/Documents/android/os/hardware/libhardware/include -I/home/gnychis/Documents/android/os/hardware/ril/include -I/home/gnychis/Documents/android/os/dalvik/libnativehelper/include -I/home/gnychis/Documents/android/os/frameworks/base/include -I/home/gnychis/Documents/android/os/external/skia/include -I/home/gnychis/Documents/android/os/out/target/product/generic/obj/include -I/home/gnychis/Documents/android/os/bionic/libc/arch-arm/include -I/home/gnychis/Documents/android/os/bionic/libc/include -I/home/gnychis/Documents/android/os/bionic/libstdc++/include -I/home/gnychis/Documents/android/os/bionic/libc/kernel/common -I/home/gnychis/Documents/android/os/bionic/libc/kernel/arch-arm -I/home/gnychis/Documents/android/os/bionic/libm/include -I/home/gnychis/Documents/android/os/bionic/libm/include/arch/arm -I/home/gnychis/Documents/android/os/bionic/libthread_db/include -I/home/gnychis/Documents/android/os/bionic/libm/arm -I/home/gnychis/Documents/android/os/bionic/libm -I/home/gnychis/Documents/android/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -DANDROID -DSK_RELEASE -DNDEBUG -include /home/gnychis/Documents/android/os/system/core/include/arch/linux-arm/AndroidConfig.h -UDEBUG -march=armv5te -mtune=xscale -msoft-float -mthumb-interwork -fpic -fno-exceptions -ffunction-sections -funwind-tables -fstack-protector -fmessage-length=0 -Bdynamic -Wl,-T,/home/gnychis/Documents/android/os/build/core/armelf.x -Wl,-dynamic-linker,/system/bin/linker -Wl,--gc-sections -Wl,-z,nocopyreloc -Wl,--no-undefined -Wl,-rpath-link=/home/gnychis/Documents/android/os/../android-ndk-r7b/platforms/android-9/arch-arm/usr/lib -L/home/gnychis/Documents/android/os/../android-ndk-r7b/platforms/android-9/arch-arm/usr/lib -nostdlib /home/gnychis/Documents/android/os/../android-ndk-r7b/platforms/android-9/arch-arm/usr/lib/crtend_android.o /home/gnychis/Documents/android/os/../android-ndk-r7b/platforms/android-9/arch-arm/usr/lib/crtbegin_dynamic.o /home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/lib/gcc/arm-eabi/4.4.3/libgcc.a -lc -lm test.c

Here's your link like, broken out into multiple lines for clarity:
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../libexec/gcc/arm-eabi/4.4.3/collect2 \
--sysroot=/usr/local/google/home/android/cupcake_rel_root \
-X \
-o test \
-L/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib \
-L/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3 \
-L/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc
-L/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/bin/../lib/gcc/arm-eabi/4.4.3/../../../../arm-eabi/lib
-T /home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/arm-eabi/lib/ldscripts/armelf.x \
-dynamic-linker /system/bin/linker \
--gc-sections \
-z nocopyreloc \
--no-undefined \
-rpath-link=/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib \
/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib/crtend_android.o \
/home/gnychis/Documents/android/android-ndk-r7b/platforms/android-9/arch-arm/usr/lib/crtbegin_dynamic.o \
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/lib32/libiberty.a \
/home/gnychis/Documents/android/os/prebuilt/linux-x86/toolchain/arm-eabi-4.4.3/lib/gcc/arm-eabi/4.4.3/libgcc.a \
-lc \
-lm \
/tmp/ccGAKjxX.o
As you can see, your own object file (the temporary one) is the very last item on the command line. This is just wrong. It needs to be before the libraries, at least, if it is to link correctly.
Basically, your agcc script is passing -nostdlib (which says that you know better) and then passing the libraries manually, but doing it in completely the wrong order. If you fix this, all should be well.
Link order is very important. Objects and libraries that provide symbols must be linked after objects and libraries that require symbols.
There were certain versions of the tools that could tolerate bad ordering, but I think that was a bug, or mis-feature, because newer toolchains cannot, and should not. Presumably this script was written for one of those.

Where to find: __aeabi_unwind_cpp_pr0 and other mysterious, undefined functions
(I had a similar problem error to what you describe, but found a different solution, that may be helpful to you or others)
I found 'libgccunwind.a' library in the Google NDK package which defines a number of these mysterious functions (they are functions referenced by libc.a and other libraries in the NDK package, but not defined in a standard library) I found them defined in a libgccunwind.a library in:
\sources\android\gccunwind\libs\armeabi
NM shows that they are defined in that lib from an 'unwind-arm.o' file:
nm libgccunwind.a
unwind-arm.o:
U _GLOBAL_OFFSET_TABLE_
00000cf8 T _Unwind_Complete
00000cfc T _Unwind_DeleteException
00000ba4 T _Unwind_GetCFA
00000408 t _Unwind_GetGR
00000474 t _Unwind_SetGR
000003c4 T _Unwind_VRS_Get
0000084c T _Unwind_VRS_Pop
00000430 T _Unwind_VRS_Set
00000844 T __aeabi_unwind_cpp_pr0
0000083c W __aeabi_unwind_cpp_pr1
00000834 W __aeabi_unwind_cpp_pr2
w __cxa_begin_cleanup
w __cxa_call_unexpected
w __cxa_type_match
U __exidx_end
U __exidx_start
00000d1c T __gnu_Unwind_Backtrace
w __gnu_Unwind_Find_exidx
Independant of the libgccunwind.a above, I searched for __aeabi_unwind_cpp_pr0 and unwind-arm.c and unwind.c, and found various c source, for example:
http://lxr.free-electrons.com/source/arch/arm/kernel/unwind.c?a=arm
http://opensource.apple.com/source/gcc/gcc-5646/gcc/config/arm/unwind-arm.c
These programs seem to be derived from a similar source. My guess is that these 'unwind_cpp' (and related functions) are called by the functions in libc.a when a function returns or on certain events so that these functions can perform some debugging or tracing operation.
In any event, adding that directory in a -L linker option and -lgccunwind linker option (after the -lc linker option) allowed the linker to find those 'undefined' functions -- and let me get to the next problem I have in cross compiling to ARM systems.

stdexcept On Android

I'm trying to compile SoundTouch on Android. I started with this configure line:
./configure CPPFLAGS="-I/Volumes/android-build/mydroid/development/ndk/build/platforms/android-3/arch-arm/usr/include/" LDFLAGS="-Wl,-rpath-link=/Volumes/android-build/mydroid/development/ndk/build/platforms/android-3/arch-arm/usr/lib -L/Volumes/android-build/mydroid/development/ndk/build/platforms/android-3/arch-arm/usr/lib -nostdlib -lc" --host=arm-eabi --enable-shared=yes CFLAGS="-nostdlib -O3 -mandroid" host_alias=arm-eabi --no-create --no-recursion
Because the Android NDK targets ARM, I also had to change the Makefile to remove the -msse2 flags to progress.
When I run 'make', I get:
/bin/sh ../../libtool --tag=CXX --mode=compile arm-eabi-g++ -DHAVE_CONFIG_H -I. -I../../include -I../../include -I/Volumes/android-build/mydroid/development/ndk/build/platforms/android-3/arch-arm/usr/include/ -O3 -fcheck-new -I../../include -g -O2 -MT FIRFilter.lo -MD -MP -MF .deps/FIRFilter.Tpo -c -o FIRFilter.lo FIRFilter.cpp
libtool: compile: arm-eabi-g++ -DHAVE_CONFIG_H -I. -I../../include -I../../include -I/Volumes/android-build/mydroid/development/ndk/build/platforms/android-3/arch-arm/usr/include/ -O3 -fcheck-new -I../../include -g -O2 -MT FIRFilter.lo -MD -MP -MF .deps/FIRFilter.Tpo -c FIRFilter.cpp -o FIRFilter.o
FIRFilter.cpp:46:21: error: stdexcept: No such file or directory
FIRFilter.cpp: In member function 'virtual void soundtouch::FIRFilter::setCoefficients(const soundtouch::SAMPLETYPE*, uint, uint)':
FIRFilter.cpp:177: error: 'runtime_error' is not a member of 'std'
FIRFilter.cpp: In static member function 'static void* soundtouch::FIRFilter::operator new(size_t)':
FIRFilter.cpp:225: error: 'runtime_error' is not a member of 'std'
make[2]: *** [FIRFilter.lo] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all-recursive] Error 1
This isn't very surprising, since the -nostdlib flag was required. Android seems to have neither stdexcept nor stdlib. How can I get past this block of compiling SoundTouch?
At a guess, there may be some flag I don't know about that I should use. I could refactor the code not to use stdexcept. There may be a way to pull in the original stdexcept source and reference that. I might be able to link to a precompiled stdexcept library.

The default provided gcc version provided with the android ndk does not support exceptions. See http://www.crystax.net/android/ndk.php for an alternative build which does.