How can i show the macro infor

[江河 <empriser@gmail.com>]

 I can't show the macro info by these operation.

gcc --version
gcc (GCC) 3.4.5 20051201 (Red Hat 3.4.5-2)

gdb --version
GNU gdb Red Hat Linux (6.3.0.0-1.96rh)

>cat x.c
#include <stdio.h>
#define NEX 1
int main()
{
        printf( "%d\n", N );
        return 0;
}

>gcc -gdwarf-2 -g3 x.c -o x

(gdb) l
1       #include <stdio.h>
2       #define NEX 1
3       int main()
4       {
5               printf( "%d\n", NEX );
6               return 0;
7       }
(gdb) info macro NEX
The symbol `NEX' has no definition as a C/C++ preprocessor macro
at x.c:8
  included at /usr/include/stdio.h:749

-- 
桂華秋皎潔