Index: configure.in
===================================================================
--- configure.in	(révision 5413)
+++ configure.in	(copie de travail)
@@ -448,9 +448,13 @@
 dnl GSSAPI
 dnl Check for Kerberos installation
 have_gssapi=no
+
+AC_ARG_ENABLE(krb5,
+	      AS_HELP_STRING([--enable-krb5],[Enable Kerberos 5 support]),
+	      [],[enable_krb5=yes])
 AC_PATH_PROG([KRB5_CONFIG], krb5-config, none, $PATH:/usr/kerberos/bin)
-					   
-if test "x$KRB5_CONFIG" != "xnone"; then
+
+if test "x$KRB5_CONFIG" != "xnone" -a "x$enable_krb5" = "xyes"; then
    GSSAPI_LIBS="`${KRB5_CONFIG} --libs gssapi`"
    GSSAPI_CFLAGS="`${KRB5_CONFIG} --cflags gssapi`"
    
@@ -481,8 +485,12 @@
      break
    ])
    LIBS="$saved_LIBS" 
-   CPPFLAGS="$saved_CPPFLAGS" 
-fi   
+   CPPFLAGS="$saved_CPPFLAGS"
+fi
+
+if test "x$KRB5_CONFIG" = "xnone" -a "x$enable_krb5" = "xyes"; then
+	AC_MSG_ERROR([*** kerberos 5 support enabled but krb5-config not found ***])
+fi
 AC_SUBST(GSSAPI_LIBS)
 AC_SUBST(GSSAPI_CFLAGS)
 	   
@@ -1077,9 +1085,13 @@
 dnl =====================
 dnl ACL checks
 dnl =====================
-acl_backends=""
+acl_backends="none"
 ACL_LIBS=""
 
+AC_ARG_ENABLE(acl,
+	    AS_HELP_STRING([--disable-acl],[Don't use libacl support]),
+	    [],[enable_acl=yes])
+
 AC_CHECK_LIB(attr,getxattr,[ACL_LIBS="$ACL_LIBS -lattr"])
 AC_CHECK_LIB(acl,acl_get_file,[ACL_LIBS="$ACL_LIBS -lacl"])
 AC_CHECK_LIB(sec,acl,[ACL_LIBS="$ACL_LIBS -lsec"])
@@ -1102,7 +1114,7 @@
 gvfs_cv_HAVE_POSIX_ACLS=yes, gvfs_cv_HAVE_POSIX_ACLS=no)
 		LIBS=$acl_LIBS])
 
-if test x"$gvfs_cv_HAVE_SOLARIS_ACLS" = x"yes" ; then
+if test x"$gvfs_cv_HAVE_SOLARIS_ACLS" = x"yes" -a x"$enable_acl" = x"yes"; then
     have_solaris_acl_support=yes
     acl_backends="solaris"
 
@@ -1110,7 +1122,7 @@
     AC_CHECK_HEADERS([pwd.h grp.h])
 fi
 
-if test x"$gvfs_cv_HAVE_POSIX_ACLS" = x"yes" ; then
+if test x"$gvfs_cv_HAVE_POSIX_ACLS" = x"yes" -a x"$enable_acl" = x"yes"; then
     have_posix_acl_support=yes
     acl_backends="posix"