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([$compilegssapi])
  25                 fi
  26
  27
  28           # Do no harm to the values of CFLAGS and LIBS while testing for
  29           # Kerberos support.
  30
  31                 ac_save_CFLAGS=$CFLAGS
  32                 ac_save_CPPFLAGS=$CPPFLAGS
  33                 ac_save_LDFLAGS=$LDFLAGS
  34                 ac_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 "$KRB5_CONFIG"; then
  42             ac_save_CFLAGS=$CFLAGS
  43             CFLAGS="";export CFLAGS
  44             ac_save_LDFLAGS=$LDFLAGS
  45             LDFLAGS="";export LDFLAGS
  46             GSSAPI_LIBS="`$KRB5_CONFIG --libs gssapi`"
  47             GSSAPI_CFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  48             GSSAPI_CPPFLAGS="`$KRB5_CONFIG --cflags | sed s/@INCLUDE_des@//`"
  49             CFLAGS=$ac_save_CFLAGS;export CFLAGS
  50             LDFLAGS=$ac_save_LDFLAGS;export LDFLAGS
  51             FOUND_GSSAPI=yes
  52             AC_MSG_RESULT(yes)
  53           else
  54             AC_MSG_RESULT(no. Fallback to previous krb5 detection strategy)
  55           fi
  56         fi
  57
  58         if test x$FOUND_GSSAPI = x"no"; then
  59         #################################################
  60         # see if this box has the SuSE location for the heimdal krb implementation
  61           AC_MSG_CHECKING(for /usr/include/heimdal)
  62           if test -d /usr/include/heimdal; then
  63             if test -f /usr/lib/heimdal/lib/libkrb5.a; then
  64                 GSSAPI_CFLAGS="-I/usr/include/heimdal"
  65                 GSSAPI_CPPFLAGS="-I/usr/include/heimdal"
  66                 GSSAPI_LDFLAGS="-L/usr/lib/heimdal/lib"
  67                 AC_MSG_RESULT(yes)
  68                 FOUND_GSSAPI=yes
  69             else
  70                 GSSAPI_CFLAGS="-I/usr/include/heimdal"
  71                 GSSAPI_CPPFLAGS="-I/usr/include/heimdal"
  72                 AC_MSG_RESULT(yes)
  73                 FOUND_GSSAPI=yes
  74             fi
  75           else
  76             AC_MSG_RESULT(no)
  77           fi
  78         fi
  79
  80         if test x$FOUND_GSSAPI = x"no"; then
  81         #################################################
  82         # see if this box has the RedHat location for kerberos
  83           AC_MSG_CHECKING(for /usr/kerberos)
  84           if test -d /usr/kerberos -a -f /usr/kerberos/lib/libkrb5.a; then
  85                 GSSAPI_LDFLAGS="-L/usr/kerberos/lib"
  86                 GSSAPI_CFLAGS="-I/usr/kerberos/include"
  87                 GSSAPI_CPPFLAGS="-I/usr/kerberos/include"
  88                 AC_MSG_RESULT(yes)
  89           else
  90                 AC_MSG_RESULT(no)
  91           fi
  92         fi
  93
  94         CFLAGS="$CFLAGS $GSSAPI_CFLAGS"
  95         CPPFLAGS="$CPPFLAGS $GSSAPI_CPPFLAGS"
  96         LDFLAGS="$LDFLAGS $GSSAPI_LDFLAGS"
  97         LIBS="$GSSAPI_LIBS"
  98
  99
 100         # check for gssapi headers
 101
 102         gss_headers_found=no
 103         AC_CHECK_HEADERS(gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_krb5.h,[gss_headers_found=yes],[],[])
 104         if test x"$gss_headers_found" = x"no"; then
 105                 AC_MSG_ERROR([GSSAPI installation not found, headers missing])
 106         fi
 107
 108         # check for libs
 109
 110         AC_CHECK_LIB(gssapi, gss_display_status)
 111         AC_CHECK_LIB(gssapi_krb5, gss_display_status)
 112
 113         # check for functions
 114
 115         AC_CHECK_FUNC(gss_acquire_cred,[],[AC_MSG_ERROR([GSSAPI: required function gss_acquire_cred missing])])
 116
 117         # Heimdal/MIT compatibility fix
 118         if test "$ac_cv_header_gssapi_h" = "yes"; then
 119             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]))
 120         else
 121             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]))
 122         fi
 123
 124
 125         AC_MSG_CHECKING(whether GSSAPI support is used)
 126         if test x"$ac_cv_func_gss_acquire_cred" = x"yes"; then
 127                 AC_DEFINE(HAVE_GSSAPI,1,[Whether to enable GSSAPI support])
 128                 AC_MSG_RESULT([yes])
 129                 GSSAPI_LIBS="$LDFLAGS $LIBS"
 130         else
 131                 AC_MSG_RESULT([no])
 132                 if test x"$compilegssapi" = x"yes"; then
 133                         AC_MSG_ERROR([GSSAPI installation not found])
 134                 fi
 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         if test x"$ac_cv_func_gss_acquire_cred" = x"yes"; then
 145                 ifelse([$1], , :, [$1])
 146         else
 147                 ifelse([$2], , :, [$2])
 148         fi
 149
 150
 151         AC_SUBST(GSSAPI_LIBS)
 152         AC_SUBST(GSSAPI_CFLAGS)
 153
 154 ])