Programming :: Compile Function C To Java?
Apr 6, 2010
i want compile function c to java under linux. the bashfile comp :
$ cc -fpic -c $(SRCS)
$ ld -shared $(OBJS) -o module.so
i see in www.swig.org
$ comp -java example.i # line 1
$ gcc -c example.c example_wrap.c -I/usr/java/jdk1.6.0_17/include -I/usr/java/jdk1.6.0_17/include/linux # line 2
$ gcc -shared example.o example_wrap.o -mno-cygwin -Wl,--add-stdcall-alias -o example.so #line 3
error line 3 :
/usr/bin/ld: unrecognized option '--add-stdcall-alias'
/usr/bin/ld: use the --help option for usage information collect2: ld returned 1 exit status
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Apr 8, 2010
i want to compile function c in java and compile library is success.. when i call the library in java and error is :
Exception in thread "main" java.lang.UnsatisfiedLinkError: no libfunc.so in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1689)
at java.lang.Runtime.loadLibrary0(Runtime.java:823)
at java.lang.System.loadLibrary(System.java:1028)
[Code]....
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Dec 28, 2010
If i have a python file with a function call_me(a,b),how can I call this function from the command line ,after i compile the program?
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Nov 16, 2010
Code:
#include <iostream>
using namespace std;
[code]...
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May 18, 2010
I am doing some Linux kernel programming for my research project. I need to record the timestamp (by using cpuid and rdtsc) when an interrupt handler (top half) is first invoked. Due to the time critical nature of the problem itself, I have to do the timestamping inside the interrupt handler itself (the first operation when the handler is called). However, I understand that tasks that are not so time critical should be deferred to a tasklet function (bottom half) for processing because other interrupts are disabled in a (top-half) interrupt handler. I am currently out of idea on how I can pass the timestamp information that I have obtained in the interrupt handler to the corresponding tasklet function.
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Oct 26, 2009
I am trying to install vmware server on CentOS: In vmware installation guide it says before intalling:
Before you begin, read the following notes and make adjustments to your host system: The realtime clock function must be compiled in your Linux kernel. The parallel port PCstyle hardware option (CONFIG_PARPORT_PC) must be built and loaded as a kernel module (that is, it must be set to m when the kernel is compiled).
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Feb 8, 2010
I have read a couple of articles on how dynamic linking works (those stuff about got, plt and lazy binding), and I am still not sure why you need to do dynamic linking in such a complicated way.Suppose your program uses a function in a shared library that needs to be linked dynamically at run time (like a printf). Why can't you statically decide the virtual address of the function at compile time? After all, all you need to do is to enter the page table entry corresponding to the address of the function if the library has been already loaded to a physical page frame.
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Sep 21, 2010
I want to use GCC to compile my java programs... I dont want to use OpenJDK. using OpenJDK to compile java... I WANT GCC
When I run this command:
Code:
[AliasM2K@localhost Documents]$ gcc HelloWorld.java
I get:
Code:
no classpath specified
So... How to specify a classpath?
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Feb 11, 2011
I want to compile java files using GCC directly . I do not want to use GCJ , forget about javac .
When I am using as
#gcc -x java helloworld.java
Its giving " no classpath specified "
Give me some solution so that I can use GCC as specified above .
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May 24, 2010
I want to declare a function in a function, but had no success till now, see the error code below and visit the project at sourceforge
[Code]...
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Jun 20, 2010
I looked on the net for such function or example and didin't find anything, thus after having made one i guess it would be legitimate to drop it to see what others thinks of it.
#!/bin/bash
addelementtoarray()
{
local arrayname=$1
[code]....
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Dec 16, 2009
Tell me how to compile and run java programs using openJDK on fedora 11
i have gcc installed
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Sep 11, 2010
How to compile and execute Java programs
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Jun 8, 2010
I'm trying to compile JGR, rJava, etc. for use w/ my updated R. My configuration of Ubuntu (9.10 Karmic, kernel 2.6.31-22-generic) and R (version 2.11.1; from lib.stat.cmu.edu source) shouldn't be terribly unusual. But, all my efforts to compile Java programs for R fail, possibly because of something in my Ubuntu configuration of Java.First, I ran: R CMD javareconf. The output from that tells me that "JAVA_HOME is not a valid path, ignoring" and the cpp flags are set to nothing. The javareconf fills most of the variables with references to openjdk. JAVA_HOME, as far as I can tell, points to a properly installed copy of Sun Java. When I run update.packages(checkBuilt=T) with this, it unsurprisingly tells me that "One or more Java configuration variables are not set" and all of my Java based programs fail to compile.
I've tried switching the default Java to the Sun version using "sudo update-alternatives --config java". Now, javareconf fills in the cpp flag and variables point to the Sun version, though I still get the error msg that JAVA_HOME is not a valid path (though javareconf sets the home path to: /usr/lib/jvm/java-6-sun-1.6.0.20/jre). When I try to compile rJava, I get the error: rJava, "JNI types differ from the native type."Does anyone have any thoughts on how to fix this? Alternatively, is there somewhere I can report these problems so they might get fixed in future versions?I suspect I can't be the only person having these problems.
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Apr 26, 2011
how to compile java code on ubuntu linux? also is it possible to incorporate C code in Java GUI?
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Jun 17, 2010
i just grabed a book and wrote a program and tried to compile it using 'javac' and everytime i'm getting this error:
javac Example.java
/usr/lib64/gcc/x86_64-suse-linux/4.3/../../../../lib64/crt1.o: In function `_start':
/usr/src/packages/BUILD/glibc-2.9/csu/../sysdeps/x86_64/elf/start.S:109: undefined reference to `main'
[Code]....
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Mar 21, 2010
For the analysis of wireless mobile nodes simulations, I have downloaded Jtrana from [URL] This is a java based project but I do not know what steps I am supposed to follow to use it for my trace analysis. In fact I know how to compile a .java file, but jtrana is a complete GUI software.So I want to know to how to install it under fedora.
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Feb 21, 2011
I'm using a webhosting server running CentOS, and I'm trying to install GCC to compile Java on the server. Since I'm new to Linux and don't have root privileges, I'm having trouble installing this. I need to install this using command-line. I don't know if I should compile from source (which I downloaded off the "gcc.gnu.org" website) or if I need to install a binary or something. Can I even install anything without root privileges?
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Dec 25, 2010
Cannot compile? warning: incompatible implicit declaration of built-in function "printf" I have build-essential.
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Sep 16, 2010
fit a surface i.e. W(x,y) using svdfit() provided by "Numerical Recipes in C". svdfit() is written for curve fitting and not for surface fitting.But one can use svdfit(), as claimed by authors of NR book, to do surface fitting. On page 680 of NR book, authors have given a hint on how to use svdfit() for fitting a surface. But I have not understood it.This link may be helpful (Chapter 15 th is relevant here.):[URL]This is my problem:
Code:
I have a set of 100 numbers. I want to fit a 2-Dimensional function W(x,y) to these numbers.
[code]....
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Aug 28, 2010
I think I put this in the wrong place
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Mar 7, 2010
Groovy is an object-oriented programming language for the Java platform. I do not have experience in Java, only perl and shell scripts. Recently I have been asked to maintain a software written in groovy (also to make enhancements). So can I learn groovy without knowing java language. or isit I have to learn java before venturing into groovy.
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Jun 4, 2010
I have a question about calling an asm function from C....It doesn't work unless I create an asm variable to hold the value of the function in....Why?Here's the code that doesn't work...
asmfile.s - version one Code: .section .data
mydata: .ascii "this is the message!
.equ mylen, . - mydata
[code]...
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Jul 23, 2010
I want to use backtrace() function to debug a crash issue. I tried this sample code to see how backtrace works. backtrace() function always returns 0 with the below code. Is there any kernel configuration that needs to be set for proper working of backtrace?
#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>
/* Obtain a backtrace and print it to stdout. */
void
print_trace (void)
[Code]...
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May 30, 2010
Can you offer me the code about fmod() in C. I want to know how this function work, i am very interested in it because i have no idea to implement it, i want to know... how to write the function... not 'how to use the function' can anyone post the source codes of this function here?
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Jul 5, 2010
i have an open source application that was developed in C++ (it uses objects and namespaces all over the place). I also have another application that was developed in C. Now i am trying to insert the code made in C into C++ application, but when i do that , i get this error on compilation of the source code:
Code:
error: 'mpi_init_vars' was not declared in this scope the function mpi_init_vars() is not part of object oriented programming and it doesn't belong to any scope, it was compiled into an object file and i am linking it with all objects of C++ application.
How can invoke the C function from C++ object oriented code?
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May 2, 2011
I am trying to build a function inside a script.
Code:
#!/bin/sh
#System commands and other configurable.
IPT=/sbin/iptables
IP6T=/sbin/ip6tables
IPST=/usr/sbin/ipset
MODP=/sbin/modprobe
GET=/usr/bin/wget
INT_NET=192.168.1.0/24 .....
I can find lots of tutorials in how to use if, then, else. However, how do I define a variable inside the function?
SEE>>
Code:
for c in $ISO
Also, am I using the 'test' command correctly( -/+ week as valid test)?
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Feb 7, 2011
I am doing a web site program and what I need is to call a C program in the PHP cloud.Do u think it would be possible? The web site would get the user input from PHP UI and pass to the C program , the C program would process the function with the user input and output the a PHP page.
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Jan 4, 2011
I ask if a c++/c function is able to know its name from inside itself:
example:
Code:
int funct1(int a,b)
{
printf("%s ",funct_name());
}
or with a trick.
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May 30, 2010
Code:
#!/bin/ksh
(...)
# FILL UP PARTITION
diskfillerfunction () {
[Code]....
Test 15: fill up partition /usr/bin/time: cannot run diskfillerfunction: No such file or directory
I am obviously omitting (...) a lot of the code, but the relevant part is all there. How do I 'time' a function?
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