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ncurses in netbeans with cygwin compiler

Posted on 2010-09-07
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Last Modified: 2013-11-15
I'm trying to run this C code in netbeans 6.8. I have installed cygwin gcc compiler. At compilation I get these error messages:

/usr/bin/make -f nbproject/Makefile-Debug.mk SUBPROJECTS= .build-conf
make[1]: Entering directory `/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest'
/usr/bin/make  -f nbproject/Makefile-Debug.mk dist/Debug/Cygwin-Windows/cursestest.exe
make[2]: Entering directory `/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest'
mkdir -p build/Debug/Cygwin-Windows
rm -f build/Debug/Cygwin-Windows/main.o.d
gcc    -c -g -MMD -MP -MF build/Debug/Cygwin-Windows/main.o.d -o build/Debug/Cygwin-Windows/main.o main.c
main.c:47:2: warning: no newline at end of file
mkdir -p dist/Debug/Cygwin-Windows
gcc     -o dist/Debug/Cygwin-Windows/cursestest build/Debug/Cygwin-Windows/main.o  
build/Debug/Cygwin-Windows/main.o: In function `draw':
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:13: undefined reference to `_stdscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:13: undefined reference to `_wmove'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:14: undefined reference to `_stdscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:14: undefined reference to `_wdelch'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:14: undefined reference to `_stdscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:14: undefined reference to `_winsch'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:15: undefined reference to `_stdscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:15: undefined reference to `_wrefresh'
build/Debug/Cygwin-Windows/main.o: In function `main':
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:30: undefined reference to `_initscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:31: undefined reference to `_cbreak'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:32: undefined reference to `_noecho'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:34: undefined reference to `_stdscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:34: undefined reference to `_wclear'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:35: undefined reference to `_stdscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:35: undefined reference to `_wrefresh'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:39: undefined reference to `_stdscr'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:39: undefined reference to `_wgetch'
/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest/main.c:44: undefined reference to `_endwin'
collect2: ld returned 1 exit status
make[2]: *** [dist/Debug/Cygwin-Windows/cursestest.exe] Error 1
make[2]: Leaving directory `/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest'
make[1]: *** [.build-conf] Error 2
make[1]: Leaving directory `/cygdrive/c/Documents and Settings/stefano federici/Documenti/NetBeansProjects/cursestest'
make: *** [.build-impl] Error 2
BUILD FAILED (exit value 2, total time: 8s)
// simple curses example; keeps drawing the inputted characters, in columns
 // downward, shifting rightward when the last row is reached, and
 // wrapping around when the rightmost column is reached

 #include "ncurses\curses.h" // required

 int r,c, // current row and column (upper-left is (0,0))
 nrows, // number of rows in window
 ncols; // number of columns in window

 void draw(char dc)

 { move(r,c); // curses call to move cursor to row r, column c
 delch(); insch(dc); // curses calls to replace character under cursor by dc
 refresh(); // curses call to update screen
 r++; // go to next row
 // check for need to shift right or wrap around
 if (r == nrows) {
 r = 0;
 c++;
 if (c == ncols) c = 0;
 }
 }

 main()

 { int i; char d;
 WINDOW *wnd;

 wnd = initscr(); // curses call to initialize window
 cbreak(); // curses call to set no waiting for Enter key
 noecho(); // curses call to set no echoing
 getmaxyx(wnd,nrows,ncols); // curses call to find size of window
 clear(); // curses call to clear screen, send cursor to position (0,0)
 refresh(); // curses call to implement all changes since last refresh

 r = 0; c = 0;
 while (1) {
 d = getch(); // curses call to input from keyboard
 if (d == 'q') break; // quit?
 draw(d); // draw the character
 }

 endwin(); // curses call to restore the original window and leave

 }

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Question by:Esanteva
2 Comments
 
LVL 13

Accepted Solution

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Superdave earned 500 total points
ID: 33621960
Judging by this line of output:

gcc     -o dist/Debug/Cygwin-Windows/cursestest build/Debug/Cygwin-Windows/main.o  

you don't have any libraries specified in the makefile.  You'll need to add at least -lncurses to that command.
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Author Closing Comment

by:Esanteva
ID: 33622179
I don't know what happened: following direction I found on the web I had added the -lncurses option for libraries. But then, you are perfectly right, now it was missing. So... Thanks.
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