I have downloaded antlr4 JAR (antlr-4.8-complete.jar) to /usr/local/lib and have added it to the CLASSPATH as CLASSPATH="$CLASSPATH:/usr/local/lib/antlr-4.8-complete.jar".
I saved the following grammar as Hello.g4 in vscode
grammar Hello;
welcome: 'hello' ID;
ID: [a-zA-Z]+;
SPACE: [ \t\r\n]+ -> skip;
and got an antlr4-runtime folder with a bunch of java files. I can compile those in terminal with javac *.java. However antlr imports (import org.antlr.v4.runtime.ParserRuleContext; and others) are not found in vscode and it does not compile.
I cannot find a way to add the JAR to this project in vscode.
Any help would be appreciated!
Add the following to the .classpath file created in vscode.
<classpathentry exported="true" kind="lib" path="/usr/local/lib/antlr-4.8-complete.jar"/>
Related
I am naive in android ndk right now . i tried steps given in this url: https://www3.ntu.edu.sg/home/ehchua/programming/android/Android_NDK.html
According to this i import sample of HELLO_JNI in my eclipse from android ndkr_10 and when i ran it throws error in logcat given below
08-17 18:12:01.472: E/AndroidRuntime(1269): java.lang.UnsatisfiedLinkError: Couldn't load hello-jni from loader dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.hellojni-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.hellojni-2, /vendor/lib, /system/lib]]]: findLibrary returned null
can somebody help me sort this problem
where i miss?
Thanks in advance
Your error mean that no hello-jni lib was found. The tutorial you follow says that you should have myjni lib.
After compiling your projet to an apk you can run the command line unzip -l you_apk_file. In the list of file you should see your .so file.
This doesn't appear to be the usual CLASSPATH issue, but maybe something specific to cygwin.
The following illustrates the issue.
import net.jradius.packet.attribute.AttributeFactory;
public class Test{
static int x = 100;
}
When compiling the following error appears.
$ javac Test.java
Test.java:1: error: package net.jradius.packet.attribute does not exist
import net.jradius.packet.attribute.AttributeFactory;
^
1 error
The file jradius-core-1.1.4.jar is in the CLASSPATH.
When using the command line within Windows it works. Here is the classpath.
set CLASSPATH=c:\Temp\jradius-core-1.1.4.jar
When using cygwin it produces the error. Here is the classpath.
export CLASSPATH=/cygdrive/c/Temp/jradius-core-1.1.4.jar
The location is valid via cygwin as the following shows it is recognized.
ls $CLASSPATH
/cygdrive/c/Temp/jradius-core-1.1.4.jar
The same JDK is used for both scenarios.
Any idea why it may be failing via cygwin???
You are using JDK built for windows, so the environment is for windows.
That's being said, you should be provide windows-style path to javac.
cygpath is what you are looking for here.
Try:
javac Test.java -cp `cygpath.exe -w /cygdrive/c/Temp/jradius-core-1.1.4.jar`
cygpath -w means print in windows style.
Or just put the jar file in the same directory of the java file, and in cygwin:
javac Test.java -cp jradius-core-1.1.4.jar
Refer from this
Added the JAR files into the directory and changed the classpath to include '*' and that appears to have worked.
When I try to build my android project with JNI, with Android NDK r9. I can not build the project and come to this error.
dirname: opérande manquant Saisissez « dirname --help » pour plus d'informations. /bin/sh: 1: ndk-build: not found /bin/sh: 1: ndk-build: not found
This message indicates that my project is not built properly
I don't speak french, but from what I read you have to add the ndk installation directory to your path. Something like
export PATH=$PATH:<path/to/your/ndk/>
I suggest reading https://developer.android.com/tools/sdk/ndk/index.html#GetStarted
Im learning to code Android in NDK on WINDOWS Eclipse.... been following a Tutorial Book by Sylvain Ratabouil. So im in Run | External Tools | External Tools Configurations…
creating a new program configuration.
Name: MyProject javah
Location : ${env_var:JAVA_HOME}\bin\javah.exe
Working directory: ${workspace_loc:/MyProject/bin}
The problem comes In arguments...
when i try
Arguments: –d ${workspace_loc:/MyProject/jni} com.myproject.MyActivity
as it says in the book
i get when i click run
Exception in thread "main" java.lang.IllegalArgumentException: Not a valid class name: –d
when i try ${workspace_loc:/MyProject/jni} com.myproject.MyActivity}
i get
Exception in thread "main" java.lang.IllegalArgumentException: Not a valid class name: C:\Paul\Workspace\MyProject\jni
UPDATE:
i put -classpath first and it's running but can not find the class file for com.myproject
after further research....
i did it.
i set arguments to
-d ${workspace_loc:/MyProject/jni} -classpath C:\Paul\android-sdk-windows\platforms\android-17\android.jar;${workspace_loc:/MyProject/bin/classes} com.myproject.MainActivity
I also spend some long time on this problem when working with the the mentioned book about Android NDK.
Please note the following:
The java classname is NOT written in { }, just write something like com.myproject.MyActivity
The -classpath parameter can receive several paths devided by semicolon.
In my case this parameters worked:
Location:
${env_var:JAVA_HOME}\bin\javah.exe
Working Directory:
${workspace_loc:/myproject/bin}
Arguments:
-d ${workspace_loc:/myproject/jni} -classpath ${workspace_loc:/myproject/bin/classes};"C:\Eclipse\sdk\platforms\android-18\android.jar" com.myproject.MyActivity
(BTW.: The correct Adroid.jar file is referenced inside the Eclipse project.)
Me also facing the same problem tonight, i found a less tedious way as following...
as "Location" set the javah from your system
as "Working directory" set the project's bin/classes directory (${workspace_loc:/HelloWorld/bin/classes})
as "Argument" set the jni folder as the output directory and point out the class on which you want to run the javah (-d "${workspace_loc:/HelloWorld/jni}" com.example.helloworld.MainActivity)
NB :: Dont forget the double qoute (") around the output in the third step ("${workspace_loc:/HelloWorld/jni}")
A full picture is also attached following
well in case ...
1-> Goto ( cd C:\Program Files\Java\jdk1.7.0_60\bin)
2-> C:\Program Files\Java\jdk1.7.0_60\bin>javah -jni -classpath
F:\Android_OpenGLES\FibonacciNative\bin\classes
-d F:\Android_OpenGLES\FibonacciNative\jni\ com.example.fibonaccinative.FibLib
without creating/using environment variable ...
Following I tried successfully
javah com.sense.kios.Calculation
Note: Include package name.
In case if javah not found as an command and you getting
The program 'javah' can be found in the following packages:
* gcj-4.6-jdk
* gcj-4.7-jdk
* openjdk-7-jdk
* openjdk-6-jdk
Try: sudo apt-get install <selected package>
use direct path of jdk path, in my case it's /usr/lib/jvm/jdk1.8.0/bin/javah.
YES THAT'S CORRECT
more abstract would be
-d ${workspace_loc:/MyProject/jni} -classpath ${env_var:ANDROID_SDK_HOME}\platforms\android-16\android.jar;${workspace_loc:/MyProject/bin/classes} com.myproject.MyActivity
I am using a mix of Java and native JNI C++ code for an android project, using NDK r8b, in Eclipse in OSX. I want to be able to use the regular C++ classes (map, string) in std namespace.
In the Android.mk file the following were added:
APP_STL := stlport_shared
Here I also tried static library. Refer to http://docs.huihoo.com/android/ndk/r5/CPLUSPLUS-SUPPORT.html
STLPORT_FORCE_REBUILD := true
Also tried removing the forced build.
In the C/C++ path and variables:
${NDKROOT}/sources/cxx-stl/stlport/stlport
"map" and "string" headers were included in the .cpp file. I am able to use std::string and std::map. The assistant picks up on them. When searching for the definition (F3 in eclipse) the header file is shown, i.e. resolved. Also, the outline shows the "string" and "map" header files and when double clicking them it also brings the headers to the forefront.
However, the build doesn't pick them up. I get the following:
> ndk-build
> Gdbserver : [arm-linux-androideabi-4.6] libs/armeabi/gdbserver
> Gdbsetup : libs/armeabi/gdb.setup
> Gdbserver : [arm-linux-androideabi-4.6] libs/armeabi-v7a/gdbserver
> Gdbsetup : libs/armeabi-v7a/gdb.setup
> Compile++ arm : ImageTargets <= ImageTargets.cpp
> xxx/Project/Code/MyImageTarget/jni/ImageTargets.cpp:20:18: fatal error: string: No such file > or directory
> compilation terminated.
> make: *** [xxx/Project/Code/MyImageTarget/obj/local/armeabi/objs-> debug/ImageTargets/ImageTargets.o] Error 1
Has anyone any idea what else is there to try.
Use V=1 parameter on ndk-build command line. This will echo all executed commands, including compilation and link, with all their parameters that NDK build assigns.
In your case, the answer can be found without detailed build log:
In the Android.mk file the following were added:
APP_STL := stlport_shared
This is your mistake. The document you cited explains that this setting should go into Application.mk. This file is usually considered optional. Yes it is. Instead of creating this file, you can specify APP_STL on the command line:
ndk-build V=1 APP_STL=stlport_static
I don't know why and how Eclipse resolves #include <string> or map.