How to edit ld.so.conf?

How to edit ld.so.conf?

SonShadowCat

Member #1,548

September 2001

Since im getting a shared lib violation I need to copy a path into ld.so.conf. Problem is I dont know how. Ive looked into the emacs command but I cant figure out how to use it( ive read the docs). Can someone help me figure out how to edit the file?

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Steve Terry

Member #1,989

March 2002

as far as I know it's standard text, just add a new line with the path... and use pico instead, just type pico ld.so.conf on the command line, ctrl-x lets you save and exit. More specifically it's ctrl-x then y then enter.

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SonShadowCat

Member #1,548

September 2001

Apparently I dont have pico o.O
Maybe its on my mandrake cd...

new line with the path??
What do you mean?

Edit: No pico on the cd. What must I do master?

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Steve Terry

Member #1,989

March 2002

I thought it went:

path1
path2
path3
....
pathn

at lest that's what it was when I last opened it.. I think... but anyway the paths were seperated by new lines.

SonShadowCat

Member #1,548

September 2001

I tried opening the file with KEdit, Kate, and KWrite. It wont save, it says I dont have write permission, im guessing that means root priveledges. How do I get around this? Login as root?

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Steve Terry

Member #1,989

March 2002

you can log in as root.. or alternatively run su on the command line, followed by your password.

SonShadowCat

Member #1,548

September 2001

ok, I logged in as root and edited the file. Now I get the same problem as before( I posted before about it but no more people replied), after I compile a source file, I try to run the program but it says it cant find the program, wth? Im looking right at, where the hell could it be?

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Matthew Leverton

Supreme Loser

January 1999

After you edit the file, you probably need to type 'ldconfig' as root anywhere you feel like.

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SonShadowCat

Member #1,548

September 2001

umm, do I type that anywhere or in the dir where ld.so.conf was?

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Steve Terry

Member #1,989

March 2002

You can type that at any point on teh command line just like any program.

SonShadowCat

Member #1,548

September 2001

I reread his post and figured that out -.-
Anyway, its all good now except for 1 little thing, whenever I exit the program I get the same little error. Does it matter?

Heh, it seems none of the code I wrote in windows works now, it spits out large amounts of errors I'm dumb!. Is programming with allegro in linux any different than doing it in windows? Will I have to change the code alot?

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Steve Terry

Member #1,989

March 2002

if you were compiling with MingW32 and not using any DOS specific header files.. then no code will have to change at all.. what kinds of errors.. did you put END_OF_MAIN() at the end of main??

PyroBoy

Member #725

October 2000

All of my code has been portable to/from DOS, Windows, Linux Though i am using gcc on all platforms and i remember the cross platform stuff like adding END_OF_MAIN() to the end of the main function .

SonShadowCat

Member #1,548

September 2001

Example: Vector undeclared even though I included vector.

Parse error before '>' token.
Parse error before end of output.

Ive looked at the code and it looks fine, it even compiles and works on windows. What could be wrong?

And no, not even I make such foolish mistakes as to leave out END_OF_MAIN(); -.-

P.S.Where is the damn calculator? Its not on the mandrake cd and I cant find it installed anywhere. An OS without a calculator, how weird ><!

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Steve Terry

Member #1,989

March 2002

hmm... try g++, gpp, cc?? I don't know never got those errors before, are you compiling a .cpp program or .c. Well since it's vector I will assume .cpp. Sorry SSC.. maybe post the source and complete output errors I may be able to help then... the only thing I can think of is maybe it's a windows text file and the new lines in linux are different from teh new lines in windows..

SonShadowCat

Member #1,548

September 2001

Heres an example of I program I just wrote that wont compile:

1#include <allegro.h>
2#include <fstream.h>
3 
4void Error_Log( char* Error)  // Writes error in an error log
5{
6  ofstream File( "ErrorLog.txt",  ios::out);  // Create a log file
7 
8  File << Error << endl;  // Log the error into the file
9 
10  File.close();  // Close the file
11}
12 
13class cPaddle  // The class containing the info on the paddle
14{
15  public:  // The following code is visible to all
16 
17  bool Initialize( int Pos);  // Initializes the variables
18 
19  bool Coll_Detection( int Y_Vel);  // Checks if paddle is about to leave the screen
20 
21  void Position_Paddle( int Y_Vel);  // Assigns the paddle new y coordinates
22 
23  void Draw_Paddle( BITMAP* Buffer);  // Blit the paddle to the buffer
24 
25  private:  // The following code is visible only to us
26 
27  BITMAP* Paddle;  // .bmp containing the sprite
28 
29  int X_Pos, Y_Pos;  // X and y coordinates of the paddle
30};
31 
32bool cPaddle::Initialize( int Pos)  // Initializes the variables
33{
34  if( Pos == 0)  // If the first paddle is being initialized
35      X_Pos = 10;  // The first paddle's x coordinate is 10
36  else  // If the second paddle is being initialized
37      X_Pos = 0;  // Must fill in later
38 
39  Y_Pos = 0;  // The y coordinate of both paddle
40 
41  Paddle = load_bitmap( "Paddle.bmp", NULL);
42  if( !Paddle)  // If the .bmp could not be loaded
43  {
44    Error_Log( "Paddle bmp could not be Loaded at line 29\n");  // Create an error log
45    return 1;
46  }
47}
48 
49bool cPaddle::Coll_Detection( int Y_Vel)  // Checks if paddle is about to leave the screen
50{
51  if( (Y_Pos + 96 + Y_Vel) < 599)  // Check if the new y coordinate will leave the screen
52      return true;  // Return false
53}
54 
55void cPaddle::Position_Paddle( int Y_Vel)  // Assigns the paddle new y coordinates
56{
57  int Result = false;  // Stores the result of collision detection
58 
59  if( (Result = Coll_Detection( Y_Vel)) == true)  // If the paddles did not leave the screen
60      Y_Pos +=Y_Vel;  // Give the paddle new coordinates
61}
62 
63void cPaddle::Draw_Paddle( BITMAP* Buffer)  // Blit the paddle to the buffer
64{
65  blit( Paddle, Buffer, 0, 0, X_Pos, Y_Pos, 32, 96);  // Blit the paddle sprite to the buffer
66}
67 
68void Get_Input( cPaddle* Paddles[2]);  // Gets input from keyboard and moves paddle
69{
70  if( keys[KEY_UP])  // If the up key is pressed
71      (*Paddles)[0].Position_Paddle( -2);  // Move the paddle up by -2
72 
73  if( keys[KEY_DOWN])  // If the down key is pressed
74      (*Paddles)[0].Position_Paddle( 2);  // Move the paddle down by 2
75}
76 
77int main()
78{
79  allegro_init();  // Initialize allegro
80  install_keyboard();
81 
82  set_color_depth( 24);  // Set the color depth to 24 bits
83  set_gfx_mode( GFX_AUTODETECT, 800, 600, 0, 0);  // Set screen res to 800x600
84 
85  while( !key[KEY_ESC])  // While the escape key is not pressed
86  {}
87 
88  return 1;
89}
90END_OF_MAIN();

ErrorS: Ios undeclared
invalid operands of types std::ofstream
endl undeclared

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Steve Terry

Member #1,989

March 2002

hmm not a c++ freak, but maybe add the line using namespace std; or something like that.. shoot I think I really need to go read some C++ books again.. been a while..

23yrold3yrold

Member #1,134

March 2001

#include <fstream>, not <fstream.h>! >_<

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SonShadowCat

Member #1,548

September 2001

holy crap ><!

I put in the namespace thing
Chris: I changed my code after I posted to fstream ::)

And now when I compile I get a butt load of undefined references, Every little bit of code I used in Error_Log created a undefined reference error

Example:

/tmp/cc8vlITR.o(.text+0x27): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)

Whats in C++'s unholy name is this?

I get around 10-15 errors like this, all pointing to Error_Log. I beseach you linux gurus, help me!

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23yrold3yrold

Member #1,134

March 2001

Are you linking with the C++ standard library? Which means you're compiling with gpp/g++ (NOT gcc) or explicitly linking in -lstdlib++ or something like that (not sure).

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SonShadowCat

Member #1,548

September 2001

I did not know that sam I am. I had a feelings I wasnt supposed to use gcc...

So I just replace gcc with g++?

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23yrold3yrold

Member #1,134

March 2001

Or gpp, yes (not sure which Linux uses). Give it a go; worth a shot, just filling out my word count at this point ....

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Step 1. Build it.
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SonShadowCat

Member #1,548

September 2001

hmm well it compiled with no errors or warnings, but I get the same problem I got before( cant find the program). Ill look through old posts to fix it ^^

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Steve Terry

Member #1,989

March 2002

ahhh don't just type "program" on teh command line, linux doesn't have the path set to teh current working directory. Instead use ./program and it will run beautifully.. I hope::)

SonShadowCat

Member #1,548

September 2001

It says its unable to find a usable VT o.O

This didnt happen before, I could just click on the program and it would work, I wonder what I screwed up.

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