macros/gssapi-check.m4

   1 dnl $Id: gssapi-check.m4,v 1.1 2003-09-03 18:27:14 samnoble Exp $
   2 dnl Autoconf macro to check for kerberos/gssapi support
   3 dnl based on samba3 configure.in
   4 dnl modified for netatalk use by bfernhomberg
   5
   6 AC_DEFUN([NETATALK_GSSAPI_CHECK],
   7 [
   8         FOUND_GSSAPI=no
   9         GSSAPI_LIBS=""
  10         GSSAPI_CFLAGS=""
  11
  12         AC_ARG_WITH(gssapi,
  13                 [  --with-gssapi[=DIR]     compile Kerberos V UAM],
  14                 [compilegssapi=$withval],
  15                 [compilegssapi=no]
  16         )
  17
  18         if test x"$compilegssapi" != x"no"; then
  19
  20                 if test "x$compilegssapi" != "xyes"; then
  21                         GSSAPI_CFLAGS="-I$withval/include"
  22                         GSSAPI_CPPFLAGS="-I$withval/include"
  23                         GSSAPI_LDFLAGS="-L$withval/lib"
  24                         FOUND_GSSAPI=yes
  25                         AC_MSG_CHECKING([checking for GSSAPI support in])
  26                         AC_MSG_RESULT([$compilegssapi])
  27                 fi
  28
  29
  30                 # Do no harm to the values of CFLAGS and LIBS while testing for
  31                 # Kerberos support.
  32
  33                 ac_save_CFLAGS=$CFLAGS
  34                 ac_save_CPPFLAGS=$CPPFLAGS
  35                 ac_save_LDFLAGS=$LDFLAGS
  36                 ac_save_LIBS=$LIBS
  37
  38                 if test x$FOUND_GSSAPI = x"no"; then
  39                   #################################################
  40                   # check for krb5-config from recent MIT and Heimdal kerberos 5
  41                   AC_PATH_PROG(KRB5_CONFIG, krb5-config)
  42                   AC_MSG_CHECKING(for working krb5-config)
  43                   if test -x "$KRB5_CONFIG"; then
  44                         ac_save_CFLAGS=$CFLAGS
  45                         CFLAGS="";export CFLAGS
  46                         ac_save_LDFLAGS=$LDFLAGS
  47                         LDFLAGS="";export LDFLAGS
  48                         GSSAPI_LIBS="`$KRB5_CONFIG --libs gssapi`"
  49                         GSSAPI_CFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  50                         GSSAPI_CPPFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  51                         CFLAGS=$ac_save_CFLAGS;export CFLAGS
  52                         LDFLAGS=$ac_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                 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="$CFLAGS $GSSAPI_CFLAGS"
  97                 CPPFLAGS="$CPPFLAGS $GSSAPI_CPPFLAGS"
  98                 LDFLAGS="$LDFLAGS $GSSAPI_LDFLAGS"
  99                 LIBS="$GSSAPI_LIBS"
 100
 101
 102                 # check for gssapi headers
 103
 104                 gss_headers_found=no
 105                 AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_krb5.h,[gss_headers_found=yes],[],[])
 106                 if test x"$gss_headers_found" = x"no"; then
 107                         AC_MSG_ERROR([GSSAPI installation not found, headers missing])
 108                 fi
 109
 110                 # check for libs
 111
 112                 AC_CHECK_LIB(gssapi, gss_display_status)
 113                 AC_CHECK_LIB(gssapi_krb5, gss_display_status)
 114
 115                 # check for functions
 116
 117                 AC_CHECK_FUNC(gss_acquire_cred,[],[AC_MSG_ERROR([GSSAPI: required function gss_acquire_cred missing])])
 118
 119                 # Heimdal/MIT compatibility fix
 120                 if test "$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"$ac_cv_lib_gssapi_gss_display_status" = x"yes" || test x"$ac_cv_lib_gssapi_krb5_gss_display_status" = x"yes"; then
 129                         AC_DEFINE(HAVE_GSSAPI,1,[Whether to enable GSSAPI support])
 130                         AC_MSG_RESULT([yes])
 131                         GSSAPI_LIBS="$LIBS $LDLAGS"
 132                 else
 133                         AC_MSG_RESULT([no])
 134                         AC_MSG_ERROR([GSSAPI installation not found])
 135                         GSSAPI_LIBS=""
 136                 fi
 137
 138                 LIBS="$ac_save_LIBS"
 139                 CFLAGS="$ac_save_CFLAGS"
 140                 LDFLAGS="$ac_save_LDFLAGS"
 141                 CPPFLAGS="$ac_save_CPPFLAGS"
 142         fi
 143
 144         AM_CONDITIONAL(USE_GSSAPI, test x"$ac_cv_lib_gssapi_gss_display_status" = x"yes")
 145         AC_SUBST(GSSAPI_LIBS)
 146         AC_SUBST(GSSAPI_CFLAGS)
 147
 148 ])