Hi all,
I am trying to extract some part of C source code defined under
certain Macro statements
for example this is a code
#include<stdio.h>
#include<unistd.h>
int main(void)
{
int my_int = 10 ;
#ifdef TEST_MACRO
int his_int = 20 ;
#else
int other_int = 40;
#endif
printf( "Test Program\n");
#ifdef TEST_MACRO
printf("his_int=%d\n",his_int);
#else
printf("other_int=%d\n",other_int) ;
#endif
printf("my_int=%d\n",my_int);
return 0 ;
}
Now after some processing using m4 I want following type of output
#include<stdio.h>
#include<unistd.h>
int main(void)
{
int my_int = 10 ;
int his_int = 20 ;
printf( "Test Program\n");
printf("his_int=%d\n",his_int);
printf("my_int=%d\n",my_int);
return 0 ;
}
using gcc -E is ofcourse one way of doing this but Is it possible using m4?
Is it possible?
Please any body tell me !!!
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