macros/gssapi-check.m4

   1 dnl $Id: gssapi-check.m4,v 1.3 2005-04-28 20:50:05 bfernhomberg Exp $
   2 dnl Autoconf macro to check for kerberos
   3
   4 AC_DEFUN([NETATALK_GSSAPI_CHECK],
   5 [
   6         FOUND_GSSAPI=no
   7         GSSAPI_LIBS=""
   8         GSSAPI_CFLAGS=""
   9
  10         AC_ARG_WITH(gssapi,
  11                 [  --with-gssapi[[=PATH]]    path to GSSAPI for Kerberos V UAM [[auto]]],
  12                 [compilegssapi=$withval],
  13                 [compilegssapi=auto]
  14         )
  15
  16         if test x"$compilegssapi" != x"no"; then
  17         if test "x$compilegssapi" != "xyes" -a "x$compilegssapi" != "xauto"; then
  18             GSSAPI_CFLAGS="-I$withval/include"
  19             GSSAPI_CPPFLAGS="-I$withval/include"
  20             GSSAPI_LDFLAGS="-L$withval/${atalk_libname}"
  21             FOUND_GSSAPI=yes
  22                         AC_MSG_CHECKING([checking for GSSAPI support in])
  23                         AC_MSG_RESULT([$compilegssapi])
  24         fi
  25
  26
  27           # Do no harm to the values of CFLAGS and LIBS while testing for
  28           # Kerberos support.
  29
  30                 save_CFLAGS=$CFLAGS
  31                 save_CPPFLAGS=$CPPFLAGS
  32                 save_LDFLAGS=$LDFLAGS
  33                 save_LIBS=$LIBS
  34
  35         if test x$FOUND_GSSAPI = x"no"; then
  36           #################################################
  37           # check for krb5-config from recent MIT and Heimdal kerberos 5
  38           AC_PATH_PROG(KRB5_CONFIG, krb5-config)
  39           AC_MSG_CHECKING(for working krb5-config)
  40           if test -x "$KRB5_CONFIG"; then
  41         CFLAGS=""; export CFLAGS
  42             LDFLAGS=""; export LDFLAGS
  43             TEMP="`$KRB5_CONFIG --libs gssapi`"
  44         if test $? -eq 0 ; then
  45                 GSSAPI_CFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  46                 GSSAPI_CPPFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  47             GSSAPI_LIBS="$TEMP"
  48                 FOUND_GSSAPI=yes
  49                 AC_MSG_RESULT(yes)
  50         else
  51                 AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  52         fi
  53             CFLAGS=$save_CFLAGS; export CFLAGS
  54             LDFLAGS=$save_LDFLAGS; export LDFLAGS
  55           else
  56             AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  57           fi
  58         fi
  59
  60         if test x$FOUND_GSSAPI = x"no"; then
  61         #################################################
  62         # see if this box has the SuSE location for the heimdal krb implementation
  63           AC_MSG_CHECKING(for /usr/include/heimdal)
  64           if test -d /usr/include/heimdal; then
  65             if test -f /usr/lib/heimdal/lib/libkrb5.a; then
  66                 GSSAPI_CFLAGS="-I/usr/include/heimdal"
  67                 GSSAPI_CPPFLAGS="-I/usr/include/heimdal"
  68                 GSSAPI_LDFLAGS="-L/usr/lib/heimdal/lib"
  69                 AC_MSG_RESULT(yes)
  70                 FOUND_GSSAPI=yes
  71             else
  72                 GSSAPI_CFLAGS="-I/usr/include/heimdal"
  73                 GSSAPI_CPPFLAGS="-I/usr/include/heimdal"
  74                 AC_MSG_RESULT(yes)
  75                 FOUND_GSSAPI=yes
  76             fi
  77           else
  78             AC_MSG_RESULT(no)
  79           fi
  80         fi
  81
  82         if test x$FOUND_GSSAPI = x"no"; then
  83         #################################################
  84         # see if this box has the RedHat location for kerberos
  85           AC_MSG_CHECKING(for /usr/kerberos)
  86           if test -d /usr/kerberos -a -f /usr/kerberos/lib/libkrb5.a; then
  87                 GSSAPI_LDFLAGS="-L/usr/kerberos/lib"
  88                 GSSAPI_CFLAGS="-I/usr/kerberos/include"
  89                 GSSAPI_CPPFLAGS="-I/usr/kerberos/include"
  90                 AC_MSG_RESULT(yes)
  91           else
  92                 AC_MSG_RESULT(no)
  93           fi
  94         fi
  95
  96         CFLAGS="$GSSAPI_CFLAGS"
  97         CPPFLAGS="$GSSAPI_CPPFLAGS"
  98         LDFLAGS="$GSSAPI_LDFLAGS"
  99         LIBS="$GSSAPI_LIBS"
 100
 101         # check for gssapi headers
 102
 103         gss_headers_found=no
 104         AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_krb5.h,[gss_headers_found=yes],[],[])
 105         if test x"$gss_headers_found" = x"no"; then
 106                 AC_MSG_ERROR([GSSAPI installation not found, headers missing])
 107         fi
 108
 109         # check for libs
 110
 111         AC_CHECK_LIB(gssapi, gss_display_status)
 112         AC_CHECK_LIB(gssapi_krb5, gss_display_status)
 113         AC_CHECK_LIB(gss, gss_display_status)
 114
 115         # check for functions
 116
 117         AC_CHECK_FUNC(gss_acquire_cred,[],[AC_MSG_ERROR([GSSAPI: required function gss_acquire_cred missing])])
 118
 119         # Heimdal/MIT compatibility fix
 120         if test "$ac_cv_header_gssapi_h" = "yes"; then
 121             AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi.h, AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE,1,[Wheter GSS_C_NT_HOSTBASED_SERVICE is in gssapi.h]))
 122         else
 123             AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi/gssapi.h, AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE,1,[Wheter GSS_C_NT_HOSTBASED_SERVICE is in gssapi.h]))
 124         fi
 125
 126
 127         AC_MSG_CHECKING(whether GSSAPI support is used)
 128         if test x"$ac_cv_func_gss_acquire_cred" = x"yes"; then
 129                 AC_DEFINE(HAVE_GSSAPI,1,[Whether to enable GSSAPI support])
 130                 AC_MSG_RESULT([yes])
 131 #               GSSAPI_LIBS="$LDFLAGS $LIBS"
 132         else
 133                 AC_MSG_RESULT([no])
 134                 if test x"$compilegssapi" = x"yes"; then
 135                         AC_MSG_ERROR([GSSAPI installation not found])
 136                 fi
 137                 GSSAPI_LIBS=""
 138         fi
 139
 140         LIBS="$save_LIBS"
 141         CFLAGS="$save_CFLAGS"
 142         LDFLAGS="$save_LDFLAGS"
 143         CPPFLAGS="$save_CPPFLAGS"
 144         fi
 145
 146         if test x"$ac_cv_func_gss_acquire_cred" = x"yes"; then
 147                 ifelse([$1], , :, [$1])
 148         else
 149                 ifelse([$2], , :, [$2])
 150         fi
 151
 152
 153         AC_SUBST(GSSAPI_LIBS)
 154         AC_SUBST(GSSAPI_CFLAGS)
 155         AC_SUBST(GSSAPI_LDFLAGS)
 156
 157 ])