Re: fail compile with cURL caused by headers

[Marco Maggi]

"Simon Josefsson" wrote:
>>   when compiling cURL version 7.19.6, it fails with:
>>
>> libtool: compile:  gcc -DHAVE_CONFIG_H -I../include -I../include -I../lib 
>> -I../lib -I/usr/local/include >>-I/usr/local/include -I/usr/include/openssl 
>> -I/usr/include -I/usr/local/include -O3 -march=i686 -mtune=i686 -g0 
>> -Wno-system-headers -MT krb5.lo -MD -MP -MF .deps/krb5.Tpo -c krb5.c  -fPIC 
>> -DPIC -o .libs/krb5.o
>> In file included from /usr/local/include/gss.h:83,
>>                  from urldata.h:130,
>>                  from krb5.c:59:
>> /usr/local/include/gss/api.h:92: error: redefinition of 'struct 
>> gss_OID_desc_struct'
>> /usr/local/include/gss/api.h:98: error: redefinition of 'struct 
>> gss_OID_set_desc_struct'
>> /usr/local/include/gss/api.h:104: error: redefinition of 'struct 
>> gss_buffer_desc_struct'
>> /usr/local/include/gss/api.h:110: error: redefinition of 'struct 
>> gss_channel_bindings_struct'
>
> Don't include  both those header files, gss.h  is from GNU
> GSS and gssapi/gssapi.h  is (probably) from Heimdal.  Both
> provide a  GSS implementation, and if you  use both you'll
> run into problems.  You should  be able to just remove the
> gssapi/gssapi.h include if you want to use GNU GSS.

Yes, that  is it.  The error  (which is still  there in cURL
7.19.7) is that, while "lib/urldata.h" has this block:

#ifdef HAVE_GSSAPI
# ifdef HAVE_GSSGNU
#  include <gss.h>
# elif defined HAVE_GSSMIT
#  include <gssapi/gssapi.h>
#  include <gssapi/gssapi_generic.h>
# else
#  include <gssapi.h>
# endif
#endif

which  correctly handles mutual  exclusion of  header files,
"lib/krb5.c" does:

#ifdef HAVE_GSSMIT
/* MIT style */
#include <gssapi/gssapi.h>
#include <gssapi/gssapi_generic.h>
#include <gssapi/gssapi_krb5.h>
#else
/* Heimdal-style */
#include <gssapi.h>
#endif

#include "urldata.h"

Thanks.
-- 
Marco Maggi