Hello,
I'm using cygwin on Vista, and have a problem running C++ code that
contains calls to GLUT routines. I've isolated the problem down to a
very simple piece of code, and have searched the web without being able
to find help.
Note that I have packages opengl 1.1.0-8, freeglut 2.4.0-1, and gcc-g++
3.4.4-3, and "uname -a" outputs
CYGWIN_NT-6.0 opticon-w 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin
Here's the problem, as best as I can isolate it. If I create a file
called main.cpp containing the following code:
#include <stdio.h>
#include <GL/glut.h>
int main( int argc, char *argv[] ) {
if ( argc > 100 ) {
// glutInit( &argc, argv );
glClear(GL_COLOR_BUFFER_BIT);
}
char str[100];
printf("Enter a string:");
scanf("%s",str);
}
and then I compile it with
g++ -o main main.cpp -lm -lglut32 -lglu32 -lopengl32
and then run the code without any arguments, it runs fine (note that the
call to glClear() never happens). However, if I uncomment the call to
the glutInit() routine and comment the glClear() call,
#include <stdio.h>
#include <GL/glut.h>
int main( int argc, char *argv[] ) {
if ( argc > 100 ) {
glutInit( &argc, argv );
// glClear(GL_COLOR_BUFFER_BIT);
}
char str[100];
printf("Enter a string:");
scanf("%s",str);
}
and compile the same way and run again without any arguments, Windows
Vista gives me an error message with the following details:
Nom d'événement de problème: APPCRASH
Nom de l'application: main.exe
Version de l'application: 0.0.0.0
Horodatage de l'application: 49103229
Nom du module par défaut: ntdll.dll
Version du module par défaut: 6.0.6001.18000
Version du module par défaut: 4791a7a6
Code de l'exception: c0000022
Décalage de l'exception: 00009cac
Version du système: 6.0.6001.2.1.0.256.4
Identificateur de paramètres régionaux: 3084
etc.
Note, again, that the call to glutInit() never happens. I suspect that
simply linking with GLUT somehow causes a problem, perhaps in some
initialization of GLUT.
Note that I have tried running the main.exe as "administrator" (by right
clicking on main.exe and choosing the "run as administrator" option from
the right-click menu), and I get the same error message as when I try
running main.exe from a cygwin shell prompt.
Any help would be appreciated, thanks.
--
Michael McGuffin, Assistant Professor
Department of Software and IT Engineering
Ecole de technologie superieure
1100 Notre-Dame Ouest
Montreal, Quebec, H3C 1K3, Canada
http://profs.logti.etsmtl.ca/mjm/
--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Problem reports: http://cygwin.com/problems.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/
