Please describe the problem:
If gssapi/gssapi_generic.h is found in the include path (e.g. /usr/include) and there's a newer version (e.g. from heimdal 1.0.1) installed somewhere else, gnomve-vfs build fails with:
In file included from ne_auth.c:66:
/usr/include/gssapi/gssapi_generic.h:46: error: syntax error before 'extern'
/usr/include/gssapi/gssapi_generic.h:47: error: syntax error before 'extern'
/usr/include/gssapi/gssapi_generic.h:48: error: syntax error before 'extern'
/usr/include/gssapi/gssapi_generic.h:50: error: syntax error before 'extern'

Steps to reproduce:
1. Build gnome-vfs with --enable-ipv6 --enable-howl --disable-gnutls, where the above conditions are met.

Actual results:


Expected results:


Does this happen every time?
yes

Other information:
Platform: Mac OS X 10.4.11 (PPC). Note that gssapi/gssapi_generic.h cannot be removed since it is provided by the vendor. The configure script should check path consistency and/or disable gssapi/gssapi_generic.h if some problem is detected with it. Indeed, I get:

[...]
configure: GSSAPI authentication support enabled
checking gssapi/gssapi_generic.h usability... no
checking gssapi/gssapi_generic.h presence... yes
configure: WARNING: gssapi/gssapi_generic.h: present but cannot be compiled
configure: WARNING: gssapi/gssapi_generic.h:     check for missing prerequisite headers?
configure: WARNING: gssapi/gssapi_generic.h: see the Autoconf documentation
configure: WARNING: gssapi/gssapi_generic.h:     section "Present But Cannot Be Compiled"
configure: WARNING: gssapi/gssapi_generic.h: proceeding with the preprocessor's result
configure: WARNING: gssapi/gssapi_generic.h: in the future, the compiler will take precedence
checking for gssapi/gssapi_generic.h... yes
[...]

So, I wonder why it is enabled...