Dear XOTcl Community,
XOTcl 1.5.5 is available. The main change is to achieve binary
compatibility
between Tcl 8.5 and XOTcl compiled with Tcl 8.4. This is essential achieved
through a small emulation layer based on C-structures that will be available
in Tcl 8.5.
best regards
-gustaf neumann
Announcing XOTcl 1.5.5
*************************
We are pleased to announce the availability of XOTcl 1.5.5.
Major changes relative to 1.5.4 are:
* Improved binary compatibility:
It is now possible to load XOTcl compiled for Tcl 8.4
into a tclsh8.5 (again, substantial change).
One can now test now 4 versions:
a) a native version for Tcl 8.4 (without compatibility layer)
b) a native version for Tcl 8.5
c) a version compiled for Tcl 8.4 with compatibility layer in tclsh8.4
d) a version compiled for Tcl 8.4 with compatibility layer in tclsh8.5
Tests showed that the overhead is for the compatibility
layer is between 1.1% and 2.3%, the difference between
tcl8.5 and tcl8.4 is much larger.
The forward compatibility behavior behavior can be turned off by setting
FORWARD_COMPATIBLE to 0 during compilation (xotcl.h) to get
a small performance improvement.
For more details about the changes, please consult the ChangeLog and
documentation.
MORE INFO
General and more detailed information about XOTcl and its components
can be found at http://www.xotcl.org
