libgnomeui-2.8.0 installation error

Hello Everyone,

I'm building gnome 2.8.0 form sources on top of a slackware 10 base
installation (kernel 2.4.26) and get the following error when compiling
libgnomeui-2.8.0:

../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`construct_full_password_dialog':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:316: error:
`GNOME_VFS_MODULE_CALLBACK_FULL_AUTHENTICATION_ANON_SUPPORTED' undeclared
(first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:316: error:
(Each undeclared identifier is reported only once
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:316: error:
for each function it appears in.)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`full_auth_get_result_from_dialog':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:338: error:
structure has no member named `out_flags'
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:340: error:
structure has no member named `out_flags'
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:340: error:
`GNOME_VFS_MODULE_CALLBACK_FULL_AUTHENTICATION_OUT_ANON_SELECTED' undeclared
(first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: At top level:
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:747: warning:
type defaults to `int' in declaration of `GnomeVFSModuleCallbackQuestionIn'
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:747: warning:
no semicolon at end of struct or union
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:747: error:
parse error before '*' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:748: warning:
type defaults to `int' in declaration of `out_args'
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:748: warning:
data definition has no type or storage class
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:752: error:
parse error before '}' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:752: warning:
type defaults to `int' in declaration of `QuestionCallbackInfo'
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:752: warning:
data definition has no type or storage class
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:757: error:
parse error before "QuestionCallbackInfo"
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`question_dialog_button_clicked':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:759: error:
`info' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:759: error:
`button_number' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:760: error:
`dialog' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: At top level:
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:765: error:
parse error before "QuestionCallbackInfo"
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`question_dialog_destroyed':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:767: error:
`info' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: At top level:
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:773: error:
parse error before "QuestionCallbackInfo"
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`question_dialog_closed':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:775: error:
`dialog' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: At top level:
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:800: error:
parse error before '*' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`present_question_dialog_nonblocking':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:805: error:
`info' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`vfs_async_question_callback':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:844: error:
`GnomeVFSModuleCallbackQuestionIn' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:844: error:
`in_real' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:845: error:
`GnomeVFSModuleCallbackQuestionOut' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:845: error:
`out_real' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:846: error:
`info' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:854: error:
parse error before ')' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:855: error:
parse error before ')' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:859: error:
parse error before ')' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`vfs_question_callback':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:874: error:
`GnomeVFSModuleCallbackQuestionIn' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:874: error:
`in_real' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:875: error:
`GnomeVFSModuleCallbackQuestionOut' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:875: error:
`out_real' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:884: error:
parse error before ')' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:885: error:
parse error before ')' token
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`gnome_authentication_manager_init':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:928: error:
`GNOME_VFS_MODULE_CALLBACK_QUESTION' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`gnome_authentication_manager_push_async':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:989: error:
`GNOME_VFS_MODULE_CALLBACK_QUESTION' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`gnome_authentication_manager_pop_async':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:1003: error:
`GNOME_VFS_MODULE_CALLBACK_QUESTION' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`gnome_authentication_manager_push_sync':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:1031: error:
`GNOME_VFS_MODULE_CALLBACK_QUESTION' undeclared (first use in this function)
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c: In function
`gnome_authentication_manager_pop_sync':
../libgnomeui-2.8.0/libgnomeui/gnome-authentication-manager.c:1045: error:
`GNOME_VFS_MODULE_CALLBACK_QUESTION' undeclared (first use in this function)
make[4]: *** [gnome-authentication-manager.lo] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

Is there a dependency that I haven't built? I am building in the order
indicated on the main gnome.org site with all indicated external
dependencies and devel library dependencies already built. If anyone can
shed some light on this I would greatly appreciate it.

Thanks,

Erik Dobecky