])
AC_CHECK_HEADERS([kerberosIV/krb.h])
AC_CHECK_HEADERS([kerberosV/heim_err.h])
+ AC_CHECK_HEADERS([com_err.h et/com_err.h krb5/com_err.h])
+ AS_IF([test x"$ac_cv_header_com_err_h" != xyes \
+ && test x"$ac_cv_header_et_com_err_h" != xyes \
+ && test x"$ac_cv_header_krb5_com_err_h" != xyes],
+ [AC_MSG_ERROR([Cannot find a usable com_err.h])])
AC_CHECK_MEMBERS([krb5_creds.keyblock, krb5_creds.keyblock.enctype, krb5_creds.session,
krb5_prompt.type], [], [], [#include <krb5.h>])
dnl If we have krb5_creds.session, we are using heimdal