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* code/unix-bindings/impl.c (impl_spawn): For Cygwin, re-implemented this function as a wrapper for the spawnvp function. The combination of fork + execvp + waitpid does not work because waitpid is broken; it waits for thep rocess, but then returns -1 and sets errno to ECHILD.
Add missing cast.
Discontinuing use of CLISP's ext:run-program function in favor of a new workalike which doesn't rely on the shell interpreter. * code/unix-bindings/unix.lisp (unix-funcs:spawn): New C call out function (unix-funcs:run-program): New function, implemented using spawn. * code/unix-bindings/impl.c (impl_spawn): New function; wraps up fork, execvp and waitpid. * code/clisp-unix.lisp: Switch from ext:run-program to unix-funcs:run-program.
Merging symlink-branch to main trunk.
Use getcwd to to implement mcvs-locate. * code/unix-bindings/unix.lisp (getcwd): New call out, invokes impl_getcwd. * code/unix-bindings/impl.c (impl_getcwd): New function, use getcwd() to obtain current working directory, resizing dynamic buffer if necessary to get the entire path. * code/clisp-unix.lisp (getcwd): New wrapper function. * code/dirwalk.lisp (go-up): Function removed. * code/mapping.lisp (mcvs-locate): Rewritten to obtain path using getcwd, then try looking for MCVS directory in successively shorter prefixes of that path.
Working back support for CLISP 2.27. * code/install.sh: Bogus *null-pointer* hack is no longer added to the generated mcvs script, since we have our own FFI functions for doing the test. * code/unix-bindings/unix.lisp (unix-funcs:null-pointer-p): New function, tests a C pointer for null, returns T or NIL. * code/unix-bindings/impl.c (impl_null_pointer_p): New function, C implementation of unix-funcs:null-pointer-p. * code/clisp-unix.lisp (pointer-null): New macro, uses ffi:foreign-address-null under CLISP 2.28 or greater, or unix-funcs:null-pointer-p, under an older CLISP.
Retargetting CVS with new system call bindings that are not GNU/Linux specific.
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