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/* This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details. */
AC_DEFUN(ACX_WITH_GSSAPI,[
#
# Use --with-gssapi[=DIR] to enable GSSAPI support.
#
# defaults to enabled with DIR in default list below
#
# Search for /SUNHEA/ and read the comments about this default below.
#
AC_ARG_WITH([gssapi],
[ --with-gssapi=value GSSAPI directory],
[acx_gssapi_withgssapi=$withval], [acx_gssapi_withgssapi=yes])dnl
dnl
dnl FIXME - cache withval and obliterate later cache values when options change
dnl
#
# Try to locate a GSSAPI installation if no location was specified, assuming
# GSSAPI was enabled (the default).
#
if test -n "$acx_gssapi_cv_gssapi"; then
# Granted, this is a slightly ugly way to print this info, but the
# AC_CHECK_HEADER used in the search for a GSSAPI installation makes using
# AC_CACHE_CHECK worse
AC_MSG_CHECKING([for GSSAPI])
else :; fi
AC_CACHE_VAL([acx_gssapi_cv_gssapi], [
if test x$acx_gssapi_withgssapi = xyes; then
# --with but no location specified
# assume a gssapi.h or gssapi/gssapi.h locates our install.
#
# This isn't always strictly true. For instance Solaris 7's SUNHEA (header)
# package installs gssapi.h whether or not the necessary libraries are
# installed. I'm still not sure whether to consider this a bug. The long
# way around is to not consider GSSPAI installed unless gss_import_name is
# found, but that brings up a lot of other hassles, like continuing to let
# gcc & ld generate the error messages when the user uses --with-gssapi=dir
# as a debugging aid. The short way around is to disable GSSAPI by default,
# but I think Sun users have been faced with this for awhile and I haven't
# heard many complaints.
acx_gssapi_save_CPPFLAGS=$CPPFLAGS
for acx_gssapi_cv_gssapi in yes /usr/kerberos /usr/cygnus/kerbnet no; do
if test x$acx_gssapi_cv_gssapi = xno; then
break
fi
if test x$acx_gssapi_cv_gssapi = xyes; then
AC_CHECKING([for GSSAPI])
else
CPPFLAGS="$acx_gssapi_save_CPPFLAGS -I$acx_gssapi_cv_gssapi/include"
AC_CHECKING([for GSSAPI in $acx_gssapi_cv_gssapi])
fi
unset ac_cv_header_gssapi_h
unset ac_cv_header_gssapi_gssapi_h
unset ac_cv_header_krb5_h
AC_CHECK_HEADERS([gssapi.h gssapi/gssapi.h krb5.h])
if (test "$ac_cv_header_gssapi_h" = yes ||
test "$ac_cv_header_gssapi_gssapi_h" = yes) &&
test "$ac_cv_header_krb5_h" = yes; then
break
fi
done
CPPFLAGS=$acx_gssapi_save_CPPFLAGS
else
acx_gssapi_cv_gssapi=$acx_gssapi_withgssapi
fi
AC_MSG_CHECKING([for GSSAPI])
])dnl
AC_MSG_RESULT([$acx_gssapi_cv_gssapi])
#
# Set up GSSAPI includes for later use. We don't bother to check for
# $acx_gssapi_cv_gssapi=no here since that will be caught later.
#
if test x$acx_gssapi_cv_gssapi = yes; then
# no special includes necessary
GSSAPI_INCLUDES=""
else
# GSSAPI at $acx_gssapi_cv_gssapi (could be 'no')
GSSAPI_INCLUDES=" -I$acx_gssapi_cv_gssapi/include"
fi
#
# Get the rest of the information CVS needs to compile with GSSAPI support
#
if test x$acx_gssapi_cv_gssapi != xno; then
# define HAVE_GSSAPI and set up the includes
AC_DEFINE([HAVE_GSSAPI],, [Define if you have GSSAPI with Kerberos version 5 available.])
includeopt=$includeopt$GSSAPI_INCLUDES
# locate any other headers
acx_gssapi_save_CPPFLAGS=$CPPFLAGS
CPPFLAGS=$CPPFLAGS$GSSAPI_INCLUDES
dnl We don't use HAVE_KRB5_H anywhere, but including it here might make it
dnl easier to spot errors by reading configure output
AC_CHECK_HEADERS([gssapi.h gssapi/gssapi.h gssapi/gssapi_generic.h krb5.h])
# And look through them for GSS_C_NT_HOSTBASED_SERVICE or its alternatives
AC_CACHE_CHECK([for GSS_C_NT_HOSTBASED_SERVICE], [acx_gssapi_cv_gss_c_nt_hostbased_service],
[acx_gssapi_cv_gss_c_nt_hostbased_service=no
if test "$ac_cv_header_gssapi_h" = "yes"; then
AC_EGREP_HEADER([GSS_C_NT_HOSTBASED_SERVICE], [gssapi.h],
[acx_gssapi_cv_gss_c_nt_hostbased_service=yes],
AC_EGREP_HEADER([gss_nt_service_name], [gssapi.h],
[acx_gssapi_cv_gss_c_nt_hostbased_service=gss_nt_service_name]))
fi
if test $acx_gssapi_cv_gss_c_nt_hostbased_service = no &&
test "$ac_cv_header_gssapi_gssapi_h" = "yes"; then
AC_EGREP_HEADER([GSS_C_NT_HOSTBASED_SERVICE], [gssapi/gssapi.h],
[acx_gssapi_cv_gss_c_nt_hostbased_service],
AC_EGREP_HEADER([gss_nt_service_name], [gssapi/gssapi.h],
[acx_gssapi_cv_gss_c_nt_hostbased_service=gss_nt_service_name]))
fi
if test $acx_gssapi_cv_gss_c_nt_hostbased_service = no &&
test "$ac_cv_header_gssapi_gssapi_generic_h" = "yes"; then
AC_EGREP_HEADER([GSS_C_NT_HOSTBASED_SERVICE], [gssapi/gssapi_generic.h],
[acx_gssapi_cv_gss_c_nt_hostbased_service],
AC_EGREP_HEADER([gss_nt_service_name], [gssapi/gssapi_generic.h],
[acx_gssapi_cv_gss_c_nt_hostbased_service=gss_nt_service_name]))
fi])
if test $acx_gssapi_cv_gss_c_nt_hostbased_service != yes &&
test $acx_gssapi_cv_gss_c_nt_hostbased_service != no; then
# don't define for yes since that means it already means something and
# don't define for no since we'd rather the compiler catch the error
AC_DEFINE_UNQUOTED([GSS_C_NT_HOSTBASED_SERVICE], [$acx_gssapi_cv_gss_c_nt_hostbased_service],
[Define to an alternative value if GSS_C_NT_HOSTBASED_SERVICE isn't defined
in the gssapi.h header file. MIT Kerberos 1.2.1 requires this. Only relevant
when using GSSAPI.])
fi
CPPFLAGS=$acx_gssapi_save_CPPFLAGS
# Expect the libs to be installed parallel to the headers
#
# We could try once with and once without, but I'm not sure it's worth the
# trouble.
if test x$acx_gssapi_cv_gssapi != xyes; then
if test -z "$LIBS"; then
LIBS="-L$acx_gssapi_cv_gssapi/lib"
else
LIBS="-L$acx_gssapi_cv_gssapi/lib $LIBS"
fi
else :; fi
dnl What happens if we want to enable, say, krb5 and some other GSSAPI
dnl authentication method at the same time?
#
# Some of the order below is particular due to library dependencies
#
#
# des Heimdal K 0.3d, but Heimdal seems to be set up such
# that it could have been installed from elsewhere.
#
AC_SEARCH_LIBS([des_set_odd_parity], [des])
#
# com_err Heimdal K 0.3d
#
# com_err MIT K5 v1.2.2-beta1
#
AC_SEARCH_LIBS([com_err], [com_err])
#
# asn1 Heimdal K 0.3d -lcom_err
#
AC_SEARCH_LIBS([initialize_asn1_error_table_r], [asn1])
#
# resolv required, but not installed by Heimdal K 0.3d
#
# resolv MIT K5 1.2.2-beta1
# Linux 2.2.17
#
AC_SEARCH_LIBS([__dn_expand], [resolv])
#
# roken Heimdal K 0.3d -lresolv
#
AC_SEARCH_LIBS([roken_gethostbyaddr], [roken])
#
# k5crypto MIT K5 v1.2.2-beta1
#
AC_SEARCH_LIBS([valid_enctype], [k5crypto])
#
# gen ? ? ? Needed on Irix 5.3 with some
# Irix 5.3 version of Kerberos. I'm not
# sure which since Irix didn't
# get any testing this time
# around. Original comment:
#
# This is necessary on Irix 5.3, in order to link against libkrb5 --
# there, an_to_ln.o refers to things defined only in -lgen.
#
AC_SEARCH_LIBS([compile], [gen])
#
# krb5 ? ? ? -lgen -l???
# Irix 5.3
#
# krb5 MIT K5 v1.1.1
#
# krb5 MIT K5 v1.2.2-beta1 -lcrypto -lcom_err
# Linux 2.2.17
#
# krb5 MIT K5 v1.2.2-beta1 -lcrypto -lcom_err -lresolv
#
# krb5 Heimdal K 0.3d -lasn1 -lroken -ldes
#
AC_SEARCH_LIBS([krb5_free_context], [krb5])
#
# gssapi_krb5 Only lib needed with MIT K5 v1.2.1, so find it first in
# order to prefer MIT Kerberos. If both MIT & Heimdal
# Kerberos are installed and in the path, this will leave
# some of the libraries above in LIBS unnecessarily, but
# noone would ever do that, right?
#
# gssapi_krb5 MIT K5 v1.2.2-beta1 -lkrb5
#
# gssapi Heimdal K 0.3d -lkrb5
#
AC_SEARCH_LIBS([gss_import_name], [gssapi_krb5 gssapi])
fi
])dnl
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