callback - closures with variable arguments as first-class C functions

This library implements closures with variable arguments and variable return
values as first-class C functions. A closure consists of a regular C function
and a piece of data which gets passed to the C function when the closure is
called.

This library is especially suited to the implementation of call-back functions
in embedded interpreters.


Installation instructions:

    Configure the parent directory. Then:
        cd callback
        make
        make check
        make install


Files in this package:

    Documentation:

        README          this text
        COPYING         free software license
        PLATFORMS       list of supported platforms
        MIGRATION       migration guide from vacall+trampoline
        callback.3      manual page in Unix man format
        callback.man    manual page
        callback.html   manual page in HTML format

    Source:

        callback.h      include file
        tests.c         test program
        vacall_r/*      a reentrant version of the vacall package
        trampoline_r/*  a reentrant version of the trampoline package

    Building:

        Makefile.in     Makefile master

    Porting:

        Makefile.devel  developer's Makefile
        call-used-registers.txt  table of call-used registers on different CPUs


Copyright notice:

Copyright 1995-2017 Bruno Haible <bruno@clisp.org>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.

