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
  18                 if test "x$compilegssapi" != "xyes" -a "x$compilegssapi" != "xauto"; then
  19                         GSSAPI_CFLAGS="-I$withval/include"
  20                         GSSAPI_CPPFLAGS="-I$withval/include"
  21                         GSSAPI_LDFLAGS="-L$withval/${atalk_libname}"
  22                         FOUND_GSSAPI=yes
  23                         AC_MSG_CHECKING([checking for GSSAPI support in])
  24                         AC_MSG_RESULT([$compilegssapi])
  25                 fi
  26
  27
  28           # Do no harm to the values of CFLAGS and LIBS while testing for
  29           # Kerberos support.
  30
  31                 save_CFLAGS=$CFLAGS
  32                 save_CPPFLAGS=$CPPFLAGS
  33                 save_LDFLAGS=$LDFLAGS
  34                 save_LIBS=$LIBS
  35
  36         if test x$FOUND_GSSAPI = x"no"; then
  37           #################################################
  38           # check for krb5-config from recent MIT and Heimdal kerberos 5
  39           AC_PATH_PROG(KRB5_CONFIG, krb5-config)
  40           AC_MSG_CHECKING(for working krb5-config)
  41           if test -x "$KRB5_CONFIG"; then
  42             TEMP="`$KRB5_CONFIG --libs gssapi`"
  43         if test $? -eq 0 ; then
  44                 save_CFLAGS=$CFLAGS
  45                 CFLAGS="";export CFLAGS
  46                 save_LDFLAGS=$LDFLAGS
  47                 LDFLAGS="";export LDFLAGS
  48                 GSSAPI_CFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  49                 GSSAPI_CPPFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  50             GSSAPI_LIBS="$TEMP"
  51                 CFLAGS=$save_CFLAGS;export CFLAGS
  52                 LDFLAGS=$save_LDFLAGS;export LDFLAGS
  53                 FOUND_GSSAPI=yes
  54                 AC_MSG_RESULT(yes)
  55         else
  56                 AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  57         fi
  58           else
  59             AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  60           fi
  61         fi
  62
  63         if test x$FOUND_GSSAPI = x"no"; then
  64         #################################################
  65         # see if this box has the SuSE location for the heimdal krb implementation
  66           AC_MSG_CHECKING(for /usr/include/heimdal)
  67           if test -d /usr/include/heimdal; then
  68             if test -f /usr/lib/heimdal/lib/libkrb5.a; then
  69                 GSSAPI_CFLAGS="-I/usr/include/heimdal"
  70                 GSSAPI_CPPFLAGS="-I/usr/include/heimdal"
  71                 GSSAPI_LDFLAGS="-L/usr/lib/heimdal/lib"
  72                 AC_MSG_RESULT(yes)
  73                 FOUND_GSSAPI=yes
  74             else
  75                 GSSAPI_CFLAGS="-I/usr/include/heimdal"
  76                 GSSAPI_CPPFLAGS="-I/usr/include/heimdal"
  77                 AC_MSG_RESULT(yes)
  78                 FOUND_GSSAPI=yes
  79             fi
  80           else
  81             AC_MSG_RESULT(no)
  82           fi
  83         fi
  84
  85         if test x$FOUND_GSSAPI = x"no"; then
  86         #################################################
  87         # see if this box has the RedHat location for kerberos
  88           AC_MSG_CHECKING(for /usr/kerberos)
  89           if test -d /usr/kerberos -a -f /usr/kerberos/lib/libkrb5.a; then
  90                 GSSAPI_LDFLAGS="-L/usr/kerberos/lib"
  91                 GSSAPI_CFLAGS="-I/usr/kerberos/include"
  92                 GSSAPI_CPPFLAGS="-I/usr/kerberos/include"
  93                 AC_MSG_RESULT(yes)
  94           else
  95                 AC_MSG_RESULT(no)
  96           fi
  97         fi
  98
  99         CFLAGS="$CFLAGS $GSSAPI_CFLAGS"
 100         CPPFLAGS="$CPPFLAGS $GSSAPI_CPPFLAGS"
 101         LDFLAGS="$LDFLAGS $GSSAPI_LDFLAGS"
 102         LIBS="$LIBS $GSSAPI_LIBS"
 103
 104
 105         # check for gssapi headers
 106
 107         gss_headers_found=no
 108         AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_krb5.h,[gss_headers_found=yes],[],[])
 109         if test x"$gss_headers_found" = x"no"; then
 110                 AC_MSG_ERROR([GSSAPI installation not found, headers missing])
 111         fi
 112
 113         # check for libs
 114
 115         AC_CHECK_LIB(gssapi, gss_display_status)
 116         AC_CHECK_LIB(gssapi_krb5, gss_display_status)
 117         AC_CHECK_LIB(gss, gss_display_status)
 118
 119         # check for functions
 120
 121         AC_CHECK_FUNC(gss_acquire_cred,[],[AC_MSG_ERROR([GSSAPI: required function gss_acquire_cred missing])])
 122
 123         # Heimdal/MIT compatibility fix
 124         if test "$ac_cv_header_gssapi_h" = "yes"; then
 125             AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi.h, AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE,1,[Wheter GSS_C_NT_HOSTBASED_SERVICE is in gssapi.h]))
 126         else
 127             AC_EGREP_HEADER(GSS_C_NT_HOSTBASED_SERVICE, gssapi/gssapi.h, AC_DEFINE(HAVE_GSS_C_NT_HOSTBASED_SERVICE,1,[Wheter GSS_C_NT_HOSTBASED_SERVICE is in gssapi.h]))
 128         fi
 129
 130
 131         AC_MSG_CHECKING(whether GSSAPI support is used)
 132         if test x"$ac_cv_func_gss_acquire_cred" = x"yes"; then
 133                 AC_DEFINE(HAVE_GSSAPI,1,[Whether to enable GSSAPI support])
 134                 AC_MSG_RESULT([yes])
 135                 GSSAPI_LIBS="$LDFLAGS $LIBS"
 136         else
 137                 AC_MSG_RESULT([no])
 138                 if test x"$compilegssapi" = x"yes"; then
 139                         AC_MSG_ERROR([GSSAPI installation not found])
 140                 fi
 141                 GSSAPI_LIBS=""
 142         fi
 143
 144         LIBS="$save_LIBS"
 145         CFLAGS="$save_CFLAGS"
 146         LDFLAGS="$save_LDFLAGS"
 147         CPPFLAGS="$save_CPPFLAGS"
 148         fi
 149
 150         if test x"$ac_cv_func_gss_acquire_cred" = x"yes"; then
 151                 ifelse([$1], , :, [$1])
 152         else
 153                 ifelse([$2], , :, [$2])
 154         fi
 155
 156
 157         AC_SUBST(GSSAPI_LIBS)
 158         AC_SUBST(GSSAPI_CFLAGS)
 159         AC_SUBST(GSSAPI_LDFLAGS)
 160
 161 ])