[Mingw-users] Re: SetEnvironmentVariableA & getenv

[Sam S. <sd...@gn...>]

> * In message <Law...@ho...>
> * On the subject of "Re: Re: SetEnvironmentVariableA & getenv"
> * Sent on Thu, 31 Jul 2003 09:16:18 +0800
> * Honorable "Luke Dunstan" <cod...@ho...> writes:
>
> Please give sample source code that reproduces this problem
> (preferably as small as possible). Also, since you are actually using
> the Cygwin compiler this problem might not apply to MinGW GCC, and if
> that is the case then you will need to report this to a Cygwin mailing
> list.


===================================== env.c =======================
#include <stdio.h>
#include <stdlib.h>

int main (int argc, char *argv[])
{
  extern char** environ;
  char** epp;
  for (epp = environ; *epp; epp++)
    printf(" -> %s\n",*epp);
  return 0;
}
===================================== env.c =======================

$ g++ -mno-cygwin -Wall env.c -o env
/cygdrive/c/Temp/cckEdEhi.o(.text+0x27):env.c: undefined reference to `__p__environ()'
$ gcc -mno-cygwin -Wall env.c -o env
$ ./env.exe
....
 -> SYSTEMDRIVE=C:
 -> SYSTEMROOT=C:\WINNT
 -> TEMP=c:\Temp
....
$

the funny thing is that if I move the `environ' declaration outside the
main() scope, g++ works just fine.
any hint why?

-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
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