No libraries, no packages...

Tux-O-Matic · 11-02-2006, 10:26 AM

I tried to write a C++ program recently, but when I tried to compile it, the error message gave me an error telling me I didn't have the cstdio library. When I looked for it, I found it in, I think, the /usr/share/ directory (called gcc32).

I have a similar problem in Java with TerminalIO and other packages. I can't seem to make a reference to the packages.

I would really like some help. Now it seems like Perl is the only language that works the way I want it to.

rednuht · 11-02-2006, 12:09 PM

what commands are you using to build the C++ and java projects ?
(more information the better)

Tux-O-Matic · 11-02-2006, 02:09 PM

I type the following:

Quote:

gcc foo.cpp

Where foo is the name of the file.
I got a long, complicated string that basically said it couldn't find the libraries.
When that didn't work, I tried the other method:

Quote:

chmod 777 foo.cpp
./foo.cpp

Then, I recieved more of a specific error message, saying it couldn't find the libraries.

Java generally did the same thing.

Quote:

javac foo.java
java foo

Please note, that with Java, I was able to get an output, and even though I have the packages for input (TerminalIO), I could not get the compiler to recognize TerminalIO or any other package.

timmeke · 11-03-2006, 08:36 AM

Is your environment set up correctly?
ie for dynamic libraries, you'll want to have $LD_LIBRARY_PATH set correctly.

And please post:
1. your c++/java code;
2. the exact error messages

EDIT: for Java, you may need $CLASSPATH and/or $JAVA_HOME for instance.

Tux-O-Matic · 11-27-2006, 04:13 PM

Sorry it took so long to get back...
Here's the C++ Code:

Quote:

#include <cstdio>
#include <cstdlib>
#include <iostream>
using namespace;
int main (int nNumberOfArgs, char* pszArgs[])
{
cout << "Hello World!\n";
system ("PAUSE");
return 0;
}

Here's what I typed:

Quote:

gcc HelloWorld.cpp

Oops...I don't know what happed to the file with the debuggin info. It basically said cstdio and iostream couldn't be found, and also that using wasn't a valid command.

timmeke · 11-28-2006, 01:36 AM

1. Try compiling it with g++ instead of gcc. This shouldn't make much difference, but try it anyway.
2. If you want to use the default "std" namespace, you should omit the "using namespace;" line or put
"using namespace std".
3. Clearly, your compiler can't locate your C++ libraries. Can you please post the output of
echo $LD_LIBRARY_PATH
echo $PATH
whereis libstdc++