compile problem

[Paul Akkermans]

Hi everyone,   I am trying to compile the following program. But from the output I get the feeling that not all links are made. I believe this is due to the fact that not all libraries are included during the compilation. The problem is that I don't know what libraries to pass with my gcc test.c command so that the linking does go well. Can anybody tell me if I am correct and if so what libraries to pass during compilation?   Thanks in advance   Paul Akkermans ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- #include <stdio.h>   #include <X11/Intrinsic.h> #include <X11/StringDefs.h> #include <X11/Xaw/Command.h> #include <X11/Xaw/Form.h> #include <X11/Xaw/Box.h>   /*  exit the program */   static void exitHandler(Widget w, XtPointer callData, XtPointer clientData)   {   exit(0);   }   /* print "hello" to stdout */   static void helloHandler(Widget w, XtPointer callData, XtPointer clientData)   {   printf("Hello\n");   }   /* main program */   void main(int argc, char **argv)   {   XtAppContext appContext;   Widget toplevel, box, topLabel, bottomPanel, helloButton, exitButton;     toplevel = XtVaAppInitialize(&appContext, "AthenaDemo", NULL, 0, &argc, argv, NULL, NULL);     box = XtVaCreateManagedWidget("box",boxWidgetClass,toplevel,NULL);     topLabel = XtVaCreateManagedWidget("topLabel", labelWidgetClass, box,          XtNlabel," Pick One ",          XtNborderWidth, 0,          NULL);     bottomPanel = XtVaCreateManagedWidget("bottomPanel", formWidgetClass, box,      XtNsensitive, True,      XtNborderWidth, 0,      NULL);     helloButton = XtVaCreateManagedWidget("helloButton", commandWidgetClass, bottomPanel,      XtNlabel," Hello ",      NULL);     XtAddCallback(helloButton, XtNcallback, helloHandler, NULL);     exitButton = XtVaCreateManagedWidget("exitButton", commandWidgetClass, bottomPanel,            XtNlabel," Exit ",            XtNfromHoriz,helloButton,            NULL);     XtAddCallback(exitButton, XtNcallback, exitHandler, NULL);   XtRealizeWidget(toplevel);   XtAppMainLoop(appContext);   } --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- output: debian:/home/paul/softwarecon# gcc test.c test.c: In function `main': test.c:26: warning: return type of `main' is not `int' /tmp/ccKRQH3r.o: In function `main': /tmp/ccKRQH3r.o(.text+0x50): undefined reference to `XtVaAppInitialize' /tmp/ccKRQH3r.o(.text+0x63): undefined reference to `boxWidgetClass' /tmp/ccKRQH3r.o(.text+0x6e): undefined reference to `XtVaCreateManagedWidget' /tmp/ccKRQH3r.o(.text+0x7f): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0x89): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0x92): undefined reference to `labelWidgetClass' /tmp/ccKRQH3r.o(.text+0x9d): undefined reference to `XtVaCreateManagedWidget' /tmp/ccKRQH3r.o(.text+0xae): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0xb5): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0xbe): undefined reference to `formWidgetClass' /tmp/ccKRQH3r.o(.text+0xc9): undefined reference to `XtVaCreateManagedWidget' /tmp/ccKRQH3r.o(.text+0xe0): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0xe9): undefined reference to `commandWidgetClass' /tmp/ccKRQH3r.o(.text+0xf4): undefined reference to `XtVaCreateManagedWidget' /tmp/ccKRQH3r.o(.text+0x108): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0x111): undefined reference to `XtAddCallback' /tmp/ccKRQH3r.o(.text+0x129): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0x132): undefined reference to `commandWidgetClass' /tmp/ccKRQH3r.o(.text+0x13d): undefined reference to `XtVaCreateManagedWidget' /tmp/ccKRQH3r.o(.text+0x151): undefined reference to `XtStrings' /tmp/ccKRQH3r.o(.text+0x15a): undefined reference to `XtAddCallback' /tmp/ccKRQH3r.o(.text+0x169): undefined reference to `XtRealizeWidget' /tmp/ccKRQH3r.o(.text+0x178): undefined reference to `XtAppMainLoop' collect2: ld returned 1 exit status --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------