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

CERTIFICATE_VERIFY_FAILED when trying to build java-cef

I'm trying to build java-cef on ubuntu following instructions from https://bitbucket.org/chromiumembedded/java-cef/wiki/BranchesAndBuilding.
At cmake step
cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
i get
-- Downloading clang-format from Google Storage...
Failed to fetch file gs://chromium-clang-format/942fc8b1789144b8071d3fc03ff0fcbe1cf81ac8 for tools/buildtools/linux64/clang-format. [Err: /home/x/Desktop/jcef/src/tools/buildtools/external_bin/gsutil/gsutil_4.15/gsutil/third_party/boto/boto/pyami/config.py:71: UserWarning: Unable to load AWS_CREDENTIAL_FILE ()
warnings.warn('Unable to load AWS_CREDENTIAL_FILE (%s)' % full_path)
Failure: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:727).
]
Terminal indicates that I'm using Python 2.7.15+.
How can i make it work? Many thanks.

In the folder where it has created the build jcef/src/tools/buildtools/download_from_google_storage.py change the version parameter of gsutil to a recent version, like 4.39. If you don't find specified file use a tool like find.

Issue with the java classpath in shell script - jars not detectable

I am trying to run my java source code using a jar file which I have created in Ubuntu and I am facing an issue of my jar files not being detected. I have copied all my jar files in a subfolder and placed my sourcecode jar outside. I am trying to call main function from my main jar and I am able to do it successfully but somehow relative jars that are inside my relative subfolders are not detectable. I tried everything including creating or testing a manifest file but it did not work out. My code is running fine in eclipse IDE. Below is my shell script code -
LIB=./ChainLib/
echo "$LIB"
echo ls "$LIB"
CLASSPATH=./ChainLib/*.jar
export CLASSPATH=./ChainLib/*.jar
echo Classpath_is "$CLASSPATH"
#$(JARS=("$LIB"/*.jar); IFS=:;
#echo "${JARS[*]}")
jarnames=`ls ./ChainLib/*.jar`
for eachfile in $jarnames
do
echo $eachfile
done
#java -cp TestBlockchainkaranl.jar Testing
xvfb-run -a java -jar TestBlock.jar
When I run above script I get below:
bash RunBlockchain.sh
./ChainLib/
ls ./ChainLib/
Classpath_is ./ChainLib/*.jar
./ChainLib/bcpkix-jdk14-1.57.jar
./ChainLib/bcprov-jdk15on-1.59.jar
./ChainLib/commons-codec-1.11.jar
./ChainLib/commons-compress-1.5.jar
./ChainLib/fabric-sdk-java-1.2.1.jar
./ChainLib/httpclient-4.1.1.jar
./ChainLib/httpclient-4.5.6.jar
./ChainLib/httpcore-4.4.10.jar
./ChainLib/javax.json-1.1.jar
./ChainLib/netty-common-5.0.0.Alpha2.jar
./ChainLib/org-apache-commons-logging.jar
u1 Username
Y Filestatus
Exception in thread "main" java.lang.NoClassDefFoundError: org/hyperledger/fabric/sdk/User
at Testing.main(Testing.java:26)
Caused by: java.lang.ClassNotFoundException: org.hyperledger.fabric.sdk.User
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 1 more
How can I make sure this issue doesn't occur and my jars get detected successfully?
Update: I am adding the manifest file which I had created and zipped it in the jar file
Here is the manifest code:
Manifest-Version: 1.0
Main-Class: Testing
Class-Path:/home/ubuntu/KaranHyperledger/java/Blockchaintool/ChainLib/*.jar
Class-Path:/home/ubuntu/KaranHyperledger/java/Blockchaintool/TestBlock.jar

Java doesn't check CLASSPATH environment variable. You have to pass it explicitly.
java -cp TestBlockchainkaranl.jar:$CLASSPATH Testing

Classpath issues - getJNIEnv failed

I have successfully compiled the JNI based Apache libhdfs (C++) on my Hadoop Sandbox / CentOS - no compilation errors or warnings:
g++ test.cpp -o test -I/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.151.x86_64/include/
-I/usr/hdp/2.6.3.0-235/usr/include/ -I/usr/hdp/2.6.3.0-235/hadoop/bin
-I/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-1.b12.el6_9.x86_64/include/
-I/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-1.b12.el6_9.x86_64/jre/lib/amd64/
-L/usr/hdp/2.6.3.0-235/hadoop/lib/ -L/usr/hdp/2.6.3.0-235/hadoop/lib/native
-L/usr/hdp/2.6.3.0-235/hadoop/lib/ -L/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-1.b12.el6_9.x86_64/jre/lib/amd64/
-L/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-1.b12.el6_9.x86_64/jre/lib/amd64/server/
-lhdfs -pthread -ljvm
Once I try to run the code, I get the following errors:
[root#sandbox-hdp ~]# ./test
Environment variable CLASSPATH not set!
getJNIEnv: getGlobalJNIEnv failed
Environment variable CLASSPATH not set!
getJNIEnv: getGlobalJNIEnv failed
If I run hadoop classpath in the terminal, I get the following output:
[root#sandbox-hdp ~]# hadoop classpath
/usr/hdp/2.6.3.0-235/hadoop/conf:/usr/hdp/2.6.3.0-
235/hadoop/lib/:/usr/hdp/2.6.3.0-235/hadoop/.//:/usr/hdp/2.6.3.0-235/hadoop-
hdfs/./:/usr/hdp/2.6.3.0-235/hadoop-hdfs/lib/:/usr/hdp/2.6.3.0-235/hadoop-
hdfs/.//:/usr/hdp/2.6.3.0-235/hadoop-yarn/lib/:/usr/hdp/2.6.3.0-235/hadoop-
yarn/.//:/usr/hdp/2.6.3.0-235/hadoop-mapreduce/lib/:/usr/hdp/2.6.3.0-
235/hadoop-mapreduce/.//::jdbc-mysql.jar:mysql-connector-java-
5.1.17.jar:mysql-connector-java-5.1.37.jar:mysql-connector-
java.jar:/usr/hdp/2.6.3.0-235/tez/:/usr/hdp/2.6.3.0-
235/tez/lib/:/usr/hdp/2.6.3.0-235/tez/conf
On the Apache libhdfs page it says:
The most common problem is the CLASSPATH is not set properly when
calling a program that uses libhdfs. Make sure you set it to all the
Hadoop jars needed to run Hadoop itself as well as the right
configuration directory containing hdfs-site.xml. It is not valid to
use wildcard syntax for specifying multiple jars. It may be useful to
run hadoop classpath --glob or hadoop classpath --jar to generate the
correct classpath for your deployment. See Hadoop Commands Reference
for more information on this command.
I do however not get how to proceed after many trial and error attempts, I would therefore appreciate any help that could help me to solve this problem.
Edit: tried the following: CLASSPATH=hadoop classpath ./test
...which gave me the following error: libjvm.so: cannot open shared object file: No such file or directory
I tried the following: export LD_LIBRARY_PATH=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-1.b12.el6_9.x86_64/jre/lib/amd64/server
...and now the error is:
[root#sandbox-hdp ~]# CLASSPATH=$CLASSPATH:`hadoop classpath` ./test
loadFileSystems error:
(unable to get stack trace for java.lang.NoClassDefFoundError exception: ExceptionUtils::getStackTrace error.)
hdfsBuilderConnect(forceNewInstance=0, nn=default, port=0, kerbTicketCachePath=(NULL), userName=(NULL)) error:
(unable to get stack trace for java.lang.NoClassDefFoundError exception: ExceptionUtils::getStackTrace error.)
hdfsOpenFile(/tmp/testfile.txt): constructNewObjectOfPath error:
(unable to get stack trace for java.lang.NoClassDefFoundError exception: ExceptionUtils::getStackTrace error.)

Maybe the following could works for you:
CLASSPATH=$CLASSPATH:`hadoop classpath` ./test
or only this:
CLASSPATH=`hadoop classpath` ./test
Check out JAVA_HOME environment variable, maybe it could alter the java libraries used too.
And finally, a wrapper like the script below could be useful:
#!/bin/bash
export CLASSPATH="AllTheJARs"
ARG0="$0"
EXEC_PATH="$( dirname "$ARG0" )"
"${EXEC_PATH}/test" $#

Java classes.jar' could not be found error when executing maven

I just installed java 8 and maven on Mac El Captain. I have set all the environment variables correctly and java -version does display the java version. But when I try to run maven from the terminal I get the following error:
File or url '/System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Classes/classes.jar' could not be found
java.net.MalformedURLException: no protocol: /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Classes/classes.jar
at java.net.URL.<init>(URL.java:593)
at java.net.URL.<init>(URL.java:490)
at java.net.URL.<init>(URL.java:439)
at com.werken.forehead.Forehead.loadFileOrUrl(Forehead.java:403)
at com.werken.forehead.Forehead.load(Forehead.java:322)
at com.werken.forehead.Forehead.config(Forehead.java:245)
at com.werken.forehead.Forehead.config(Forehead.java:131)
at com.werken.forehead.Forehead.main(Forehead.java:579)
any ideas?

For Maven 1.x, I found the following bit of the bin/maven shell script caused the same error for me on a Mac:
if $darwin; then
TOOLS_JAR="/System/Library/Frameworks/JavaVM.framework/Versions/${JAVA_VERSION}/Classes/classes.jar"
fi
I simply edited the bin/maven script file and commented out the if $darwin; then ... fi section and it is now working.

The pass where classes
java.net.MalformedURLException: no protocol: /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Classes/classes.jar
I would guess its 'JavaVM.framework' or really amissing protocol like 'file:'
If you installed the JDK in a path like JavaVM.framework, try to installit in another path without '.'