gssapi.m4
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# Based on gssapi.m4 by Brendan Cully <brendan@kublai.com> 20010529
dnl MU_CHECK_GSSAPI(PREFIX)
dnl Search for a GSSAPI implementation in the standard locations plus PREFIX,
dnl if it is set and not "yes".
dnl Defines GSSAPI_CFLAGS and GSSAPI_LIBS if found.
dnl Defines GSSAPI_IMPL to "Heimdal", "MIT", or "OldMIT", or "none" if not found
AC_DEFUN(MU_CHECK_GSSAPI,
[
if test "x$mu_cv_lib_gssapi_libs" = x; then
cache=""
GSSAPI_PREFIX=[$1]
GSSAPI_IMPL="none"
# First try krb5-config
if test "$GSSAPI_PREFIX" != "yes"; then
krb5_path="$GSSAPI_PREFIX/bin"
else
krb5_path="$PATH"
fi
AC_PATH_PROG(KRB5CFGPATH, krb5-config, none, $krb5_path)
if test "$KRB5CFGPATH" != "none"; then
GSSAPI_CFLAGS="$CPPFLAGS `$KRB5CFGPATH --cflags gssapi`"
GSSAPI_LIBS="`$KRB5CFGPATH --libs gssapi`"
GSSAPI_IMPL="Heimdal"
else
## OK, try the old code
saved_CPPFLAGS="$CPPFLAGS"
saved_LDFLAGS="$LDFLAGS"
saved_LIBS="$LIBS"
if test "$GSSAPI_PREFIX" != "yes"; then
GSSAPI_CFLAGS="-I$GSSAPI_PREFIX/include"
GSSAPI_LDFLAGS="-L$GSSAPI_PREFIX/lib"
CPPFLAGS="$CPPFLAGS $GSSAPI_CFLAGS"
LDFLAGS="$LDFLAGS $GSSAPI_LDFLAGS"
fi
## Check for new MIT kerberos V support
AC_CHECK_LIB(gssapi_krb5, gss_init_sec_context,
[GSSAPI_IMPL="MIT",
GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_err"]
,, -lkrb5 -lk5crypto -lcom_err)
## Heimdal kerberos V support
if test "$GSSAPI_IMPL" = "none"; then
AC_CHECK_LIB(gssapi, gss_init_sec_context,
[GSSAPI_IMPL="Heimdal"
GSSAPI_LDFLAGS="$GSSAPI_LDFLAGS -lgssapi -lkrb5 -ldes -lasn1 -lroken"
GSSAPI_LIBS="$GSSAPI_LDFLAGS -lcrypt -lcom_err"]
,, -lkrb5 -ldes -lasn1 -lroken -lcrypt -lcom_err)
fi
## Old MIT Kerberos V
## Note: older krb5 distributions use -lcrypto instead of
## -lk5crypto, which collides with OpenSSL. One way of dealing
## with that is to extract all objects from krb5's libcrypto
## and from openssl's libcrypto into the same directory, then
## to create a new libcrypto from these.
if test "$GSSAPI_IMPL" = "none"; then
AC_CHECK_LIB(gssapi_krb5, g_order_init,
[GSSAPI_IMPL="OldMIT",
GSSAPI_LIBS="$GSSAPI_LDFLAGS -lgssapi_krb5 -lkrb5 -lcrypto -lcom_err"]
,, -lkrb5 -lcrypto -lcom_err)
fi
fi
mu_cv_lib_gssapi_cflags="$GSSAPI_CFLAGS"
mu_cv_lib_gssapi_libs="$GSSAPI_LIBS"
mu_cv_lib_gssapi_impl="$GSSAPI_IMPL"
LDFLAGS="$saved_LDFLAGS"
LIBS="$saved_LIBS"
else
cached=" (cached) "
GSSAPI_CFLAGS="$mu_cv_lib_gssapi_cflags"
GSSAPI_LIBS="$mu_cv_lib_gssapi_libs"
GSSAPI_IMPL="$mu_cv_lib_gssapi_impl"
fi
AC_MSG_CHECKING(GSSAPI implementation)
AC_MSG_RESULT(${cached}$GSSAPI_IMPL)
])