impure_ptr/Mingw and Cygwin

[Andrew DeFaria]

I wish to use -mno-cygwin to produce an executable that can work without Cygwin installed. I have successfully done this before. Now I'm adding some functionality to my program and it is no longer working! I've worked it out such that it will compile and link but when my program runs it simply stops returning an exit code of 5. Running this under gdb produces a SIGSIGV Segmentation fault then you attempt to run it.

I've whittled it down to the bare minimum to reproduce the problem. Seems to me the problem is somewhere between newer versions of gcc 3.X and Mingw.

File: foo.c:

#include <stdio.h>
int main (void) {
printf ("Hello World\n");
fprintf (stderr, "%s\n", "Hello World 2");
}

$ gcc -g foo.c -mno-cygwin -I/usr/include -o foo -liberty -lcrtdll -lg
$ foo
$

Note that if I do not put -lg then I get:

/tmp/ccKAyr4S.o(.text+0x4b): In function `main':
/dview/defaria_2.0/salira/neopon/build/maketools/foo.c:4: undefined reference to `_impure_ptr'

Any ideas?




--
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Bug reporting: http://cygwin.com/bugs.html
Documentation: http://cygwin.com/docs.html
FAQ: http://cygwin.com/faq/