Problems compiling C in XCODE using VISA / NI
Hi,
I'm developing a program in C to communicate with my Tektronix oscilloscope. I inherited this project from a friend (who is currently incommunicado), so I can't talk to him about it.
Basically, my problem is that my program will not build due to a linker problem. I am using functions from the NI-VISA 5.4 package for OS X 10.8. However, the linker cannot seem to find the correct functions for my system:
Undefined symbols for architecture x86_64:
"_viClose", referenced from:
_setupVI in oscilloscope.o
_getData in oscilloscope.o
_closeInstr in oscilloscope.o
"_viOpen", referenced from:
_setupVI in oscilloscope.o
"_viOpenDefaultRM", referenced from:
_setupVI in oscilloscope.o
"_viRead", referenced from:
_setupVI in oscilloscope.o
_getData in oscilloscope.o
"_viStatusDesc", referenced from:
_setupVI in oscilloscope.o
_getData in oscilloscope.o
"_viWrite", referenced from:
_setupVI in oscilloscope.o
_getData in oscilloscope.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
These are all pretty basic VISA functions. I struggled in just including the correct header file, as
#include <visa.h>
didn't work. When I went to the verbose form, it worked:
#include "/Library/Frameworks/VISA.framework/Versions/A/Headers/visa.h"
However, then the problem started happening that I'm having now -- the object linker can't find the code for the VISA functions. I've tried changing build architctures from x86_64 to just x86, without avail. I'm currently building in i386 x86. I've also tried (under Build Phases -> Link Binary with Libraries) to link the VISA.framework to the project, but this simply gives the linker error "cannot find VISA".
I feel like I am missing something very obvious. I'm still operating under the notion that either NI-VISA did not install to the correct location, or that my build settings are incorrect.
Does anyone have any insight to lend? I've been searching through different forums for help for almost 2 days now, with no avail.
atucker-hs wrote:
That is a good point that I hadn't thought of--I didn't run any install operations before installing 5.4. I'll try uninstalling all of 5.4 (there's not an uninstaller; just a text file of files to delete) and then doing a clean install after a restart. I'll let you know how it goes.
As far as their included examples, I tried to compile them both when I had 5.3 and 5.4 installed. I used gcc from the command line, and there were tons of errors - far more than I have in my XCODE project.
Did you try the Instruments/NI-VISA/Examples/C/ExamplesProject.pbproj?
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Kind Regards,
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E. Sulzer
Applications Engineer
National Instruments
Attachments:
Call Library Function Node on Mac with XCode.zip 33 KB -
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hello.
this is james mcfadden. i'm having problems compiling the Demo.java program. the Demo.java program is shown below along with the MediaPanel.java and MediaTest.java programs. when i compile the Demo.java program i get the following errors. i really need help in getting rid of these errors.
----jGRASP exec: javac -g X:\CP4B Project\Demo.java
Demo.java:297: cannot find symbol
symbol : class Media
location: class Demo
MediaTest media=new Media();
^
Demo.java:301: cannot find symbol
symbol : class Media
location: class Demo
MediaTest media=new Media();
^
Demo.java:305: cannot find symbol
symbol : class Media
location: class Demo
MediaTest media=new Media();
^
3 errors
----jGRASP wedge2: exit code for process is 1.
----jGRASP: operation complete.
//Written by:Seamus McFadden
//Class:CP4B
//Program Number:1
//Program Name:Demo.java
//Description:
//Supervisor:Gerard McCloskey
import java.awt.*;//Contains all of the classes for creating user interfaces and for painting graphics and images
import java.awt.event.*;//Provides interfaces and classes for dealing with different types of events fired by AWT components
import javax.swing.*;//Provides a set of lightweight components that, to the maximum degree possible, work the same on all platforms
public class Demo extends JFrame{
public static void main(String[] args){
int choice=-1;//a variable of type int that is set to -1
choice=getChoice();//invokes the method getChoice()
if(choice!=0){
getSelected(choice);//invokes the method getSelected(choice)
}//end if
}//end main
public static int getChoice(){
String choice;//a variable of type string
int ch;//a variable of type int
choice=JOptionPane.showInputDialog(null,
"1. Product Menu\n" +
"2. Member Menu\n" +
"3. Rental Menu\n" +
"4. Media Menu\n" +
"5. Log Off\n\n" +
"Enter your choice");//asks the user for some input
ch=Integer.parseInt(choice);//a class that wraps a value of the primitive type int in an object
return ch;//a method that returns an integer value
}//end getChoice
public static void getSelected(int choice){
if(choice == 1) {
product();
}//end if
if(choice==2){
member();
}//end if
if(choice==3){
rental();
}//end if
if(choice==4){
media();
}//end if
if(choice==5){
LogOff logoff=new LogOff();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getSelected
public static void product(){
int productChoice=-1;//a variable of type int that is set to -1
productChoice=getProductChoice();//invokes the method getChoice()
if(productChoice!=0){
getProductSelected(productChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void member(){
int memberChoice=-1;//a variable of type int that is set to -1
memberChoice=getMemberChoice();//invokes the method getChoice()
if(memberChoice!=0){
getMemberSelected(memberChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void rental(){
int rentalChoice=-1;//a variable of type int that is set to -1
rentalChoice=getRentalChoice();//invokes the method getChoice()
if(rentalChoice!=0){
getRentalSelected(rentalChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void media(){
int mediaChoice=-1;//a variable of type int that is set to -1
mediaChoice=getMediaChoice();//invokes the method getChoice()
if(mediaChoice!=0){
getMediaSelected(mediaChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static int getProductChoice(){
String productChoice;//a variable of type string
int pch;//a variable of type int
productChoice=JOptionPane.showInputDialog(null,
"1. Add product details\n" +
"2. View product details\n" +
"3. Edit product details\n" +
"4. Delete product details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
pch=Integer.parseInt(productChoice);//a class that wraps a value of the primitive type int in an object
return pch;//a method that returns an integer value
}//end getProductChoice
public static int getMemberChoice(){
String memberChoice;//a variable of type string
int mch;//a variable of type int
memberChoice=JOptionPane.showInputDialog(null,
"1. Add member details\n" +
"2. View member details\n" +
"3. Edit member details\n" +
"4. Delete member details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mch=Integer.parseInt(memberChoice);//a class that wraps a value of the primitive type int in an object
return mch;//a method that returns an integer value
}//end getMemberChoice
public static int getRentalChoice(){
String rentalChoice;//a variable of type string
int rch;//a variable of type int
rentalChoice=JOptionPane.showInputDialog(null,
"1. Add rental details\n" +
"2. View rental details\n" +
"3. Edit rental details\n" +
"4. Delete rental details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
rch=Integer.parseInt(rentalChoice);//a class that wraps a value of the primitive type int in an object
return rch;//a method that returns an integer value
}//end getRentalChoice
public static int getMediaChoice(){
String mediaChoice;//a variable of type string
int mtch;//a variable of type int
mediaChoice=JOptionPane.showInputDialog(null,
"1. Listen to songs\n" +
"2. View movie previews\n" +
"3. View game previews\n" +
"4. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mtch=Integer.parseInt(mediaChoice);//a class that wraps a value of the primitive type int in an object
return mtch;//a method that returns an integer value
}//end getMediaChoice
public static void getProductSelected(int productChoice){
if(productChoice==1){
addProducts();
}//end if
if(productChoice==2){
viewProducts();
}//end if
if(productChoice==3){
editProducts();
}//end if
if(productChoice==4){
deleteProducts();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getProductSelected
public static void getMemberSelected(int memberChoice){
if(memberChoice==1){
addMembers();
}//end if
if(memberChoice==2){
viewMembers();
}//end if
if(memberChoice==3){
editMembers();
}//end if
if(memberChoice==4){
deleteMembers();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getMemberSelected
public static void getRentalSelected(int rentalChoice){
if(rentalChoice==1){
addRentals();
}//end if
if(rentalChoice==2){
viewRentals();
}//end if
if(rentalChoice==3){
editRentals();
}//end if
if(rentalChoice==4){
deleteRentals();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getRentalSelected
public static void getMediaSelected(int mediaChoice){
if(mediaChoice==1){
hearSongs();
}//end if
if(mediaChoice==2){
viewMovies();
}//end if
if(mediaChoice==3){
viewGames();
}//end if
else{
ErrorMessage error=new ErrorMessage();
}//end getMediaSelected
public static void addProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void viewProducts(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void deleteProducts(){
ProductForm product=new ProductForm();
product.setVisible(true);
public static void addMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void viewMembers(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void deleteMembers(){
MemberForm member=new MemberForm();
member.setVisible(true);
public static void addRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void viewRentals(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void deleteRentals(){
RentalForm rental=new RentalForm();
rental.setVisible(true);
public static void hearSongs(){
MediaTest media=new Media();
public static void viewMovies(){
MediaTest media=new Media();
public static void viewGames(){
MediaTest media=new Media();
}//end class Demo
import java.awt.BorderLayout;
import java.awt.Component;
import java.io.IOException;
import java.net.URL;
import javax.media.CannotRealizeException;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.swing.JPanel;
public class MediaPanel extends JPanel{
public MediaPanel(URL mediaURL){
setLayout(new BorderLayout());//use a BorderLayout
//Use lightweight components for Swing compatibility
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER,true);
try{
//create a player to play the media specified in the URL
Player mediaPlayer=Manager.createRealizedPlayer(mediaURL);
//get the components for the video and the playback controls
Component video=mediaPlayer.getVisualComponent();
Component controls=mediaPlayer.getControlPanelComponent();
if(video!=null)
add(video,BorderLayout.CENTER);//add video component
if(controls!=null)
add(controls,BorderLayout.SOUTH);//add controls
mediaPlayer.start();//start playing the media clip
}//end try
catch(NoPlayerException noPlayerException){
System.err.println("No media player found");
}//end catch
catch(CannotRealizeException cannotRealizeException){
System.err.println("Could not realize media player");
}//end catch
catch(IOException iOException){
System.err.println("Error reading from the source");
}//end catch
}//end MediaPanel constructor
}//end class MediaPanel
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
public class MediaTest{
//launch the application
public static void main(String args[]){
//create a file chooser
JFileChooser fileChooser=new JFileChooser();
//show open file dialog
int result=fileChooser.showOpenDialog(null);
if(result==JFileChooser.APPROVE_OPTION){//user chose a file
URL mediaURL=null;
try{
//get the file as URL
mediaURL=fileChooser.getSelectedFile().toURL();
}//end try
catch(MalformedURLException malformedURLException){
System.err.println("Could not create URL for the file");
}//end catch
if(mediaURL!=null) {//only display if there is a valid URL
JFrame mediaTest=new JFrame("Media Tester");
mediaTest.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MediaPanel mediaPanel=new MediaPanel(mediaURL);
mediaTest.add(mediaPanel);
mediaTest.setSize(300,300);
mediaTest.setVisible(true);
}//end inner if
}//end outer if
}//end main
}//end class MediaTesthello.
this is james mcfadden. thanks for the reply. i did what you told me to do, but i am still having trouble trying to use the 2 JMF programs (MediaPanel.java and MediaTest.java) with the Demo.java program. the Demo.java program compiles and runs ok, but when i press 1 (for listening to songs) in the media menu i get a JOptionPane (An Error Message) displayed on screen. how can i fix this problem?
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Demo extends JFrame{
public static void main(String[] args){
int choice=-1;//a variable of type int that is set to -1
choice=getChoice();//invokes the method getChoice()
if(choice!=0){
getSelected(choice);//invokes the method getSelected(choice)
}//end if
}//end main
public static int getChoice(){
String choice;//a variable of type string
int ch;//a variable of type int
choice=JOptionPane.showInputDialog(null,
"1. Product Menu\n" +
"2. Member Menu\n" +
"3. Rental Menu\n" +
"4. Media Menu\n" +
"5. Log Off\n\n" +
"Enter your choice");//asks the user for some input
ch=Integer.parseInt(choice);//a class that wraps a value of the primitive type int in an object
return ch;//a method that returns an integer value
}//end getChoice
public static void getSelected(int choice){
if(choice == 1) {
product();
}//end if
if(choice==2){
member();
}//end if
if(choice==3){
rental();
}//end if
if(choice==4){
media();
}//end if
if(choice==5){
LogOff logoff=new LogOff();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getSelected
public static void product(){
int productChoice=-1;//a variable of type int that is set to -1
productChoice=getProductChoice();//invokes the method getChoice()
if(productChoice!=0){
getProductSelected(productChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void member(){
int memberChoice=-1;//a variable of type int that is set to -1
memberChoice=getMemberChoice();//invokes the method getChoice()
if(memberChoice!=0){
getMemberSelected(memberChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void rental(){
int rentalChoice=-1;//a variable of type int that is set to -1
rentalChoice=getRentalChoice();//invokes the method getChoice()
if(rentalChoice!=0){
getRentalSelected(rentalChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static void media(){
int mediaChoice=-1;//a variable of type int that is set to -1
mediaChoice=getMediaChoice();//invokes the method getChoice()
if(mediaChoice!=0){
getMediaSelected(mediaChoice);//invokes the method getSelected(choice)
}//end if
getChoice();
public static int getProductChoice(){
String productChoice;//a variable of type string
int pch;//a variable of type int
productChoice=JOptionPane.showInputDialog(null,
"1. Add product details\n" +
"2. View product details\n" +
"3. Edit product details\n" +
"4. Delete product details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
pch=Integer.parseInt(productChoice);//a class that wraps a value of the primitive type int in an object
return pch;//a method that returns an integer value
}//end getProductChoice
public static int getMemberChoice(){
String memberChoice;//a variable of type string
int mch;//a variable of type int
memberChoice=JOptionPane.showInputDialog(null,
"1. Add member details\n" +
"2. View member details\n" +
"3. Edit member details\n" +
"4. Delete member details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mch=Integer.parseInt(memberChoice);//a class that wraps a value of the primitive type int in an object
return mch;//a method that returns an integer value
}//end getMemberChoice
public static int getRentalChoice(){
String rentalChoice;//a variable of type string
int rch;//a variable of type int
rentalChoice=JOptionPane.showInputDialog(null,
"1. Add rental details\n" +
"2. View rental details\n" +
"3. Edit rental details\n" +
"4. Delete rental details\n" +
"5. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
rch=Integer.parseInt(rentalChoice);//a class that wraps a value of the primitive type int in an object
return rch;//a method that returns an integer value
}//end getRentalChoice
public static int getMediaChoice(){
String mediaChoice;//a variable of type string
int mtch;//a variable of type int
mediaChoice=JOptionPane.showInputDialog(null,
"1. Listen to songs\n" +
"2. View movie previews\n" +
"3. View game previews\n" +
"4. Return to main menu\n\n" +
"Enter your choice");//asks the user for some input
mtch=Integer.parseInt(mediaChoice);//a class that wraps a value of the primitive type int in an object
return mtch;//a method that returns an integer value
}//end getMediaChoice
public static void getProductSelected(int productChoice){
if(productChoice==1){
addProducts();
}//end if
if(productChoice==2){
viewProducts();
}//end if
if(productChoice==3){
editProducts();
}//end if
if(productChoice==4){
deleteProducts();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getProductSelected
public static void getMemberSelected(int memberChoice){
if(memberChoice==1){
addMembers();
}//end if
if(memberChoice==2){
viewMembers();
}//end if
if(memberChoice==3){
editMembers();
}//end if
if(memberChoice==4){
deleteMembers();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getMemberSelected
public static void getRentalSelected(int rentalChoice){
if(rentalChoice==1){
addRentals();
}//end if
if(rentalChoice==2){
viewRentals();
}//end if
if(rentalChoice==3){
editRentals();
}//end if
if(rentalChoice==4){
deleteRentals();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getRentalSelected
public static void getMediaSelected(int mediaChoice){
if(mediaChoice==1){
hearSongs();
}//end if
if(mediaChoice==2){
viewMovies();
}//end if
if(mediaChoice==3){
viewGames();
}//end if
else{
JOptionPane.showMessageDialog(null,"Error\n\nInvalid options\nPlease choose 1, 2, 3, 4 or 5 on the main menu\nPlease choose 1, 2, 3, 4 or 5 on the product menu\nPlease choose 1, 2, 3, 4 or 5 on the member menu\nPlease choose 1, 2, 3, 4 or 5 on the rental menu\nPlease choose 1, 2, 3 or 4 on the media menu");
System.exit(0);
}//end getMediaSelected
public static void addProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void viewProducts(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editProducts(){
ProductForm product=new ProductForm();
product.getInput();
product.setVisible(true);
public static void deleteProducts(){
ProductForm product=new ProductForm();
product.setVisible(true);
public static void addMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void viewMembers(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editMembers(){
MemberForm member=new MemberForm();
member.getInput();
member.setVisible(true);
public static void deleteMembers(){
MemberForm member=new MemberForm();
member.setVisible(true);
public static void addRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void viewRentals(){
DatabaseTest tt=new DatabaseTest();
tt.setVisible(true);
public static void editRentals(){
RentalForm rental=new RentalForm();
rental.getInput();
rental.setVisible(true);
public static void deleteRentals(){
RentalForm rental=new RentalForm();
rental.setVisible(true);
public static void hearSongs(){
MediaTest media=new MediaTest();
public static void viewMovies(){
MediaTest media=new MediaTest();
public static void viewGames(){
MediaTest media=new MediaTest();
}//end class Demo
import java.awt.BorderLayout;
import java.awt.Component;
import java.io.IOException;
import java.net.URL;
import javax.media.CannotRealizeException;
import javax.media.Manager;
import javax.media.NoPlayerException;
import javax.media.Player;
import javax.swing.JPanel;
public class MediaPanel extends JPanel{
public MediaPanel(URL mediaURL){
setLayout(new BorderLayout());//use a BorderLayout
//Use lightweight components for Swing compatibility
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER,true);
try{
//create a player to play the media specified in the URL
Player mediaPlayer=Manager.createRealizedPlayer(mediaURL);
//get the components for the video and the playback controls
Component video=mediaPlayer.getVisualComponent();
Component controls=mediaPlayer.getControlPanelComponent();
if(video!=null)
add(video,BorderLayout.CENTER);//add video component
if(controls!=null)
add(controls,BorderLayout.SOUTH);//add controls
mediaPlayer.start();//start playing the media clip
}//end try
catch(NoPlayerException noPlayerException){
System.err.println("No media player found");
}//end catch
catch(CannotRealizeException cannotRealizeException){
System.err.println("Could not realize media player");
}//end catch
catch(IOException iOException){
System.err.println("Error reading from the source");
}//end catch
}//end MediaPanel constructor
}//end class MediaPanel
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
public class MediaTest{
//launch the application
public static void main(String args[]){
//create a file chooser
JFileChooser fileChooser=new JFileChooser();
//show open file dialog
int result=fileChooser.showOpenDialog(null);
if(result==JFileChooser.APPROVE_OPTION){//user chose a file
URL mediaURL=null;
try{
//get the file as URL
mediaURL=fileChooser.getSelectedFile().toURL();
}//end try
catch(MalformedURLException malformedURLException){
System.err.println("Could not create URL for the file");
}//end catch
if(mediaURL!=null) {//only display if there is a valid URL
JFrame mediaTest=new JFrame("Media Tester");
mediaTest.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
MediaPanel mediaPanel=new MediaPanel(mediaURL);
mediaTest.add(mediaPanel);
mediaTest.setSize(300,300);
mediaTest.setVisible(true);
}//end inner if
}//end outer if
}//end main
}//end class MediaTest
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