undefined reference to `errno'

undefined reference to `errno'

[Dr. Volker Zell]

Hi all

When trying to compile netpbm-1mar94.p1 I get a bunch of messages like
 
../pbm/libpbm.a(libpbm1.o)(.text+0x4e1):libpbm1.c: undefined reference
to `errno'

Does anybody know how to deal with this kind of error. I think I
had this kind of messages before on another program source. Beside
this error everything else compiles just fine. There is also a binary
distribution of netpbm-1mar94 compiled with cygwin out there, so the  
problem can be solved :-)


Ciao
  Volker

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Re: undefined reference to `errno'

[Andrew Lipnitsky]

Dr. Volker Zell wrote:

> Hi all
>
> When trying to compile netpbm-1mar94.p1 I get a bunch of messages like
>
> ../pbm/libpbm.a(libpbm1.o)(.text+0x4e1):libpbm1.c: undefined reference
>
> to `errno'
>
> .....
>
> Ciao
>   Volker
>

I had the same when I am trying to compile omniBroker 2.0.2

Andrew Lipnitsky.

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Re: undefined reference to `errno'

[Fergus Henderson]

On 20-Jan-1998, Dr. Volker Zell <vzell@de.oracle.com> wrote:
> Hi all
> 
> When trying to compile netpbm-1mar94.p1 I get a bunch of messages like
>  
> ../pbm/libpbm.a(libpbm1.o)(.text+0x4e1):libpbm1.c: undefined reference
> to `errno'
> 
> Does anybody know how to deal with this kind of error.

I think adding `#include <errno.h>' at the start of libpbm1.c
should solve the problem.  You might need to also comment out
any explicit declarations of `errno'.

-- 
Fergus Henderson <fjh@cs.mu.oz.au>   |  "I have always known that the pursuit
WWW: < http://www.cs.mu.oz.au/~fjh >   |  of excellence is a lethal habit"
PGP: finger fjh@128.250.37.3         |     -- the last words of T. S. Garp.
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