With the versions of tcl-itcl4-dev (4.2.3-1) and tcl8.7-dev
(8.7.0~a5+dfsg-3) currently in experimental, this simple example does
not work:

    $ echo "#include <itcl/itcl.h>" > test.c
    $ gcc -c test.c -I/usr/include/tcl
    In file included from test.c:1:
    /usr/include/itcl/itcl.h:144:5: error: unknown type name 'Tcl_Size'
      144 |     Tcl_Size len;                  /* number of values on stack */
          |     ^~~~~~~~
    /usr/include/itcl/itcl.h:145:5: error: unknown type name 'Tcl_Size'
      145 |     Tcl_Size max;                  /* maximum size of stack */
          |     ^~~~~~~~
    /usr/include/itcl/itcl.h:164:5: error: unknown type name 'Tcl_Size'
      164 |     Tcl_Size num;                  /* number of elements */
          |     ^~~~~~~~

It does work in unstable.

Currently, in experimental, tcl-dev depends on tcl8.7-dev. If this
packages migrate into unstable, then tcl-itcl4-dev will be broken in a
serious way. Hence, I am am hereby setting the severity level to
important.

The patch attached to this bug report seems to fix the problem.

Best,

Rafael

Hi Rafael,

Thank you for the report and for the patch!

Indeed, tcl-dev depends on tcl8.8-dev in experimental in order to spot
this type of bugs. Eventually, Tcl/Tk 8.7 will be released, and then
we'll do a big transition of all the Tcl/Tk related packages from 8.6
to 8.7. Your patch will definitely help with it.

Cheers!

Hi,

I'm closing this bugreport because Tcl/Tk 8.7 is decided not to be
released, and is removed from Debian. itcl4 should work fine with
Tcl/Tk 9.0.

Cheers!