macros/gssapi-check.m4

   1 dnl Autoconf macro to check for kerberos
   2
   3 AC_DEFUN([NETATALK_GSSAPI_CHECK],
   4 [
   5     FOUND_GSSAPI=no
   6     GSSAPI_LIBS=""
   7     GSSAPI_CFLAGS=""
   8     GSSAPI_LDFLAGS=""
   9     save_CFLAGS="$CFLAGS"
  10     save_LDFLAGS="$LDFLAGS"
  11     save_LIBS="$LIBS"
  12
  13     AC_ARG_WITH(gssapi,
  14         [  --with-gssapi[[=PATH]]    path to GSSAPI for Kerberos V UAM [[auto]]],
  15         [compilegssapi=$withval],
  16         [compilegssapi=auto]
  17     )
  18
  19     if test x"$compilegssapi" != x"no" ; then
  20         if test "x$compilegssapi" != "xyes" -a "x$compilegssapi" != "xauto" ; then
  21             export CFLAGS="-I$withval/include"
  22             export LDFLAGS="-L$withval/${atalk_libname}"
  23             AC_MSG_NOTICE([checking for GSSAPI support in $compilegssapi])
  24         fi
  25
  26         if test x"$compilegssapi" = x"yes" -o x"$compilegssapi" = x"auto" ; then
  27             # check for krb5-config from recent MIT and Heimdal kerberos 5
  28             AC_PATH_PROG(KRB5_CONFIG, krb5-config)
  29             AC_MSG_CHECKING([for working krb5-config that takes --libs gssapi])
  30
  31             if test -x "$KRB5_CONFIG" ; then
  32                 TEMP="`$KRB5_CONFIG --libs gssapi`"
  33                 if test $? -eq 0 ; then
  34                     GSSAPI_CFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  35                     GSSAPI_LIBS="$TEMP"
  36                     FOUND_GSSAPI=yes
  37                     AC_MSG_RESULT(yes)
  38                 else
  39                     AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  40                 fi
  41             else
  42                 AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  43             fi
  44         fi
  45     fi
  46
  47     if test x"$compilegssapi" != x"no" -a x"$FOUND_GSSAPI" = x"no" ; then
  48         # check for gssapi headers
  49         gss_headers_found=no
  50         AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_krb5.h,
  51             [gss_headers_found=yes])
  52         if test x"$gss_headers_found" = x"no" ; then
  53             AC_MSG_ERROR([GSSAPI installation not found, headers missing])
  54         fi
  55         # check for libs
  56         AC_SEARCH_LIBS(gss_display_status, [gss gssapi gssapi_krb5])
  57         if test x"$ac_cv_search_gss_display_status" = x"no" ; then
  58             AC_MSG_ERROR([GSSAPI installation not found, library missing])
  59         fi
  60         GSSAPI_CFLAGS="$CFLAGS"
  61         GSSAPI_LIBS="$LIBS"
  62         FOUND_GSSAPI=yes
  63     fi
  64
  65     if test x"$FOUND_GSSAPI" = x"yes" ; then
  66         # check for functions
  67         export CFLAGS="$GSSAPI_CFLAGS"
  68         export LIBS="$GSSAPI_LIBS"
  69         AC_CHECK_FUNC(gss_acquire_cred, [], [AC_MSG_ERROR([GSSAPI: required function gss_acquire_cred missing])])
  70
  71         # Heimdal/MIT compatibility fix
  72         if test "$ac_cv_header_gssapi_h" = "yes" ; then
  73             AC_EGREP_HEADER(
  74                 GSS_C_NT_HOSTBASED_SERVICE,
  75                 gssapi.h,
  76                 AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE, 1, [Wheter GSS_C_NT_HOSTBASED_SERVICE is in gssapi.h])
  77             )
  78         else
  79             AC_EGREP_HEADER(
  80                 GSS_C_NT_HOSTBASED_SERVICE,
  81                 gssapi/gssapi.h,
  82                 AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE, 1, [Wheter GSS_C_NT_HOSTBASED_SERVICE is in gssapi.h])
  83             )
  84         fi
  85
  86         AC_DEFINE(HAVE_GSSAPI, 1, [Whether to enable GSSAPI support])
  87         if test x"$ac_cv_func_gss_acquire_cred" = x"yes" ; then
  88                 ifelse([$1], , :, [$1])
  89         else
  90                 ifelse([$2], , :, [$2])
  91         fi
  92     fi
  93
  94     AC_SUBST(GSSAPI_LIBS)
  95     AC_SUBST(GSSAPI_CFLAGS)
  96     AC_SUBST(GSSAPI_LDFLAGS)
  97
  98     export LIBS="$save_LIBS"
  99     export CFLAGS="$save_CFLAGS"
 100     export LDFLAGS="$save_LDFLAGS"
 101 ])