Develop Reference

Debug OpenJDK14 using CLion: failed to load the CMake project

I download the source code of OpenJDK14 and put them in \home\yuanfang\jdk14 and after running bash configure --disable-warnings-as-errors and make images, I build OpenJDK14 successfully, The newly built JDK is in home\yuanfang\jdk14\build\linux-x86_64-server-release\jdk. By the way, I am using Ubuntu 20.04 LTS.
Then I want to debug OpenJDK14 using CLion IDE. I was using CLion 2020.2 and I take the following steps:
After open CLion I choose Create New CMake Project from Sources and choose the directory of \home\yuanfang\jdk14, which is the root directory of the jdk project.
I alter the Run/Debug Configurations to make it look like this:
CLion create a CMakeLists.txt automatically but the file doesn't work, so after googling I find find the correct CMakeLists.txt here at https://github.com/ojdkbuild/ojdkbuild/blob/master/src/java-14-openjdk/CMakeLists.txt. I then rewrite the old CMakeLists.txt using the correct one.
I download the whole repository(that is, github.com/ojdkbuild/ojdkbuild), unzip it and put it into \home\yuanfang\jdk14.
It looks like as follow, the ojdkbuild-master is the newly added folder.
I reload the CMake project, but some CMake error occurs(as follow), why can't CLion find those files? javaI googled but can't find any effective solution. Is there anything I can do or refer to? Thanks in advance.
CMake Error at CMakeLists.txt:19 (include):
include could not find load file:
/home/yuanfang/jdk14/../../resources/cmake/ojdkbuild_common.cmake
CMake Error at CMakeLists.txt:21 (include):
include could not find load file:
/home/yuanfang/jdk14/../../resources/cmake/version.cmake
CMake Error at CMakeLists.txt:93 (add_subdirectory):
add_subdirectory given source
"/home/yuanfang/jdk14/../../deps/rhino/scripting_tasks" which is not an
existing directory.
CMake Error at CMakeLists.txt:98 (ojdkbuild_add_subdirectory):
Unknown CMake command "ojdkbuild_add_subdirectory".
-- Configuring incomplete, errors occurred!
See also "/home/yuanfang/jdk14/cmake-build-debug/CMakeFiles/CMakeOutput.log".
Cannot get compiler information:
Compiler exited with error code 1: /usr/bin/cc -xobjective-c -I/home/yuanfang/jdk14/build/linux-x86_64-server-release/hotspot/variant-server/gensrc/adfiles......./loading/LibraryLoader/jar_src -g -fpch-preprocess -v -dD -E
Using built-in specs.
COLLECT_GCC=/usr/bin/cc
OFFLOAD_TARGET_NAMES=nvptx-none:hsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 9.3.0-10ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-9/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,gm2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-9 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none,hsa --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2)
COLLECT_GCC_OPTIONS='-I' '/home/yuanfang/jdk14/build/linux-x86_64-server-release/hotspot/variant-server/gensrc/adfiles' '-I' '......'-g' '-fpch-preprocess' '-v' '-dD' '-E' '-D' '___CIDR_DEFINITIONS_END' '-mtune=generic' '-march=x86-64'
cc1obj -E -quiet -v #/tmp/cci3XM6r -imultiarch x86_64-linux-gnu -D ___CIDR_DEFINITIONS_END /tmp/compiler-file5929385022787926768 -mtune=generic -march=x86-64 -fpch-preprocess -g -fworking-directory -fasynchronous-unwind-tables -fstack-protector-strong -Wformat -Wformat-security -fstack-clash-protection -fcf-protection -dD
cc: fatal error: cannot execute 'cc1obj': execvp: No such file or directory
compilation terminated.
[Failed to reload]

step: check out this projecdt :https://github.com/ojdkbuild/ojdkbuild.git
step: put the source code of OpenJDK14 in ojdkbuild/src/
step: copy reousrces directory and CMakelists.txt to OpenJDK14
step： recomile openjdk and import project to CLin

Android NDK - Build does not find NDK includes such as <Queue>,

I have set up NDK as described in the installation guide, have set the PATH variable to my NDK installation.
Now when building my app in Android Studio, I'm getting a build error which says me that the include could not be found. This is my first NDK project so I guess that something is wrong with the configuration and the compiler does not know where to look for the include files.
I have also set the NDK-directory in the local.properties - file. The compiler can be found but the includes not.
Here is the compiler output:
Error:Execution failed for task ':app:compileDebugNdk'.
com.android.ide.common.internal.LoggedErrorException: Failed to run command:
D:\android-ndk-r10c\ndk-build.cmd NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=D:\Programmieren\SoundTouch-Android-master\app\build\intermediates\ndk\debug\Android.mk APP_PLATFORM=android-20 NDK_OUT=D:\Programmieren\SoundTouch-Android-master\app\build\intermediates\ndk\debug\obj NDK_LIBS_OUT=D:\Programmieren\SoundTouch-Android-master\app\build\intermediates\ndk\debug\lib APP_ABI=all
Error Code:
2
Output:
D:\Programmieren\SoundTouch-Android-master\app\src\main\jni\soundtouch-jni.cpp:3:17: fatal error: queue: No such file or directory
#include
^
compilation terminated.
make.exe: *** [D:\Programmieren\SoundTouch-Android-master\app\build\intermediates\ndk\debug\obj/local/arm64-v8a/objs/soundtouch/D_\Programmieren\SoundTouch-Android-master\app\src\main\jni\soundtouch-jni.o] Error 1
I hope you have an idea and can help me.

Make sure your build.gradle includes this:
android.defaultConfig.ndk {
stl "c++gnustl_static"
abiFilter "armeabi"
}

Compiling OpenCV on Ubuntu

When I try to build OpenCV for java on Ubuntu I got the following error:
[ 61%] Built target opencv_test_objdetect
Generating opencl_kernels.cpp, opencl_kernels.hpp
CMake Error at /home/dinhvantan/opencv/opencv/cmake/cl2cpp.cmake:50 (string):
string does not recognize sub-command MD5
make[2]: *** [modules/ocl/opencl_kernels.cpp] Error 1
make[1]: *** [modules/ocl/CMakeFiles/opencv_ocl.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 70%] Built target opencv_legacy
make: *** [all] Error 2
Could anyone tell me what I need to do resolve this problem?

This link suggests you need to upgrade to a newer CMake version.
You could either upgrade to a new Ubuntu release, or use a PPA, or build CMake from source.

Compiling Android JNI for OpenCV on Mac OSX

Bear with me - this is a long description, but I wanted to include all details. I'm trying use android NDK and JNI for building OpenCV Android apps.
I'm following this tutorial to get everything installed:
http://www.stanford.edu/class/ee368/Android/Tutorial-2-OpenCV-for-Android-Setup-Macintosh-API8.pdf
The following installed just fine:
/usr/bin/g++
/usr/local/bin/swig
/usr/bin/cmake
/usr/bin/make
/Developer/pcre-8.32/
Contents of my .bashrc file:
export NDK=/Users/Me/Code/Android/android-ndk-r4-crystax
export SDK=/Users/Me/Code/Android/adt-bundle-mac-x86_64-20130219/
export OPCV=/Users/Me/Code/OpenCV/opencv
export PATH=$NDK:$SDK/tools:$SDK/platform-tools:$PATH
export NDK_ROOT=$NDK
Making OpenCV libraries went just fine.
Due to complaint in using make, I had to make a small edit in /Users/Me/Code/OpenCV/opencv/android/android-jni/local.env.mk which looked like so:
#ANDROID_NDK_ROOT=$(HOME)/android-ndk-r4-crystax
ANDROID_NDK_ROOT=/Users/Me/Code/Android/android-ndk-r4-crystax
Then upon trying again to make in the android-jni, directory, disaster struck:
/Users/Me/Code/Android/android-ndk-r4-crystax/ndk-build OPENCV_CONFIG=../build/android-opencv.mk \
PROJECT_PATH= ARM_TARGETS="armeabi armeabi-v7a" V=
Gdbserver : [arm-eabi-4.4.0] /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi/gdbserver
Gdbsetup : /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi/gdb.setup
Gdbsetup : + source directory /Users/Me/Code/OpenCV/opencv/android/android-jni/jni
Gdbserver : [arm-eabi-4.4.0] /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi-v7a/gdbserver
Gdbsetup : /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi-v7a/gdb.setup
Gdbsetup : + source directory /Users/Me/Code/OpenCV/opencv/android/android-jni/jni
SharedLibrary : libandroid-opencv.so
/Users/Me/Code/Android/android-ndk-r4-crystax/build/prebuilt/darwin-x86/arm-eabi-4.4.0/bin/../lib/gcc/arm-eabi/4.4.0/../../../../arm-eabi/bin/ld: cannot find -lopencv_calib3d
collect2: ld returned 1 exit status
make[1]: *** [/Users/Me/Code/OpenCV/opencv/android/android-jni/obj/local/armeabi/libandroid-opencv.so] Error 1
make: *** [libs/armeabi-v7a/libandroid-opencv.so] Error 2
I thought perhaps this was a pkg-config error, but that appears to be set up as well, though in my old install of OpenCV. Below is the output of pkg-config --cflags --libs opencv:
-I/usr/include/opencv /usr/lib/libopencv_calib3d.dylib /usr/lib/libopencv_contrib.dylib /usr/lib/libopencv_core.dylib /usr/lib/libopencv_features2d.dylib /usr/lib/libopencv_flann.dylib /usr/lib/libopencv_gpu.dylib /usr/lib/libopencv_highgui.dylib /usr/lib/libopencv_imgproc.dylib /usr/lib/libopencv_legacy.dylib /usr/lib/libopencv_ml.dylib /usr/lib/libopencv_nonfree.dylib /usr/lib/libopencv_objdetect.dylib /usr/lib/libopencv_photo.dylib /usr/lib/libopencv_stitching.dylib /usr/lib/libopencv_ts.dylib /usr/lib/libopencv_video.dylib /usr/lib/libopencv_videostab.dylib
The install built by this particular tutorial has placed an opencv.pc file at this location:
/Users/Me/Code/OpenCV/opencv/build/unix-install
BUT Running the below and trying make again doesn't fix the problem:
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/Users/Me/Code/OpenCV/opencv/build/unix-install
I can't figure out what is wrong. I've been battling with this problem for about a month on and off, and finally needed some outside opinions. Any ideas?

Error message says
cannot find -lopencv_calib3d collect2: ld returned 1 exit status
It means linker can't find opencv_calib3d library. It may have name libopencv_calib3d.a or libopencv_calib3d.so. So you need find one of them and add path to this file to your LD_LIBRARY_PATH env variable.
I mean if let's say folder /Users/Me/Code/OpenCV/opencv/lib contains libopencv_calib3d.so then you need execute something like following before make:
export LD_LIBRARY_PATH=/Users/Me/Code/OpenCV/opencv/lib:$LD_LIBRARY_PATH

Try the official OpenCV4Android tutorials at http://docs.opencv.org/trunk/doc/tutorials/introduction/android_binary_package/android_dev_intro.html

Building Android from Source -File not found error

I've been following the build tutorials on source.android.com in attempt to build ICS. When I use the make command, I'm getting a File not found error.
Does anybody have more experience with this?
Here is the console, starting with my make command:
[root#dev working_directory]# make
============================================
PLATFORM_VERSION_CODENAME=AOSP
PLATFORM_VERSION=4.0.3.0.2.0.1.0
TARGET_PRODUCT=full
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
HOST_ARCH=x86
HOST_OS=linux
HOST_BUILD_TYPE=release
BUILD_ID=OPENMASTER
OUT_DIR=out
============================================
/bin/bash: line 0: cd: cts/tools/cts-native-xml-generator/src/res: No such file or directory
host C: acp <= build/tools/acp/acp.c
In file included from /usr/include/features.h:387:0,
from /usr/include/stdlib.h:25,
from build/tools/acp/acp.c:11:
/usr/include/gnu/stubs.h:7:27: fatal error: gnu/stubs-32.h: No such file or directory
compilation terminated.
make: *** [out/host/linux-x86/obj/EXECUTABLES/acp_intermediates/acp.o] Error 1

It seems you have some packages missing. Follow the instructions available at http://source.android.com/source/initializing.html to set up your environment.