This is the mail archive of the ecos-discuss@sourceware.org mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: redefinition of `cyg_uint32'


I'm sorry, I confused #define with typedef.
This is the correct problem description:

The problem started by using the openbsd package.
In ecos/packages/net/bsd_tcpip/current/include/sys/bsdtypes.h:

  typedef	unsigned int		u_int32_t;
  typedef	unsigned int		 uint32_t;

But in ecos/packages/compat/linux/current/include/linux/types.h:

#define uint32_t cyg_uint32

So apparantly, the compiler replaces in bsdtypes.h the 'uint32_t' with cyg_uint32, which becomes then redefined.
Apparantly, because it is not possible because the same file bdstypes.h contains also:
#undef uint32_t


The compiler complains when compiling jffs2:
  arm-elf-gcc -c  ... ecos/packages/fs/jffs2/current/src/compr.c
And compr.h contains
  #include <linux/types.h>

What happens when a typedefed "uint32_t" exists, follewed by #define'ing it??
Could that be the cause of problems?

Kind regards,
Juergen


Andrew Lunn wrote:


On Wed, May 17, 2006 at 05:03:53PM +0200, Juergen Lambrecht wrote:

Hello,

I get compiler errors for all `cyg_uintxxx' types, e.g.

redefinition of `cyg_uint32'

This is because the build directory ecos_ims/install/include/linux/types.h contains the following wrong code:

#include "cyg/infra/cyg_type.h"

#define uint8_t cyg_uint8
#define uint16_t cyg_uint16
#define uint32_t cyg_uint32

#define int8_t cyg_int8
#define int16_t cyg_int16
#define int32_t cyg_int32

The types above are redefined because "cyg/infra/cyg_type.h" already defines them (ecos/packages/infra/current/include/cyg_type.h


cyg_types.h only defines the cyg_* types. It does not define the onces
without cyg_ . Hence why the linux/types.h exists.

However i don't see how this can cause a problem. Please can you give
a real test case to reproduce the error.

  Thanks
        Andrew




-- Jürgen Lambrecht Diksmuidse Heerweg 338 8200 Sint-Andries Tel: +32 (0)50 842901 GSM: +32 (0)476 313389

--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]