[GRASS-dev] Re: 'g.gui wxpython' won't work in wingrass as wxgui is a shell script

[Ivan Shmakov]

>>>>> Glynn Clements <glynn at gclements.plus.com> writes:

[...]

 >> So far as a Windows implementation of G_spawn_ex() is concerned, a
 >> partial implementation using spawnvp() or spawnvpe() should be
 >> relatively straightforward, and better than nothing.

 > I have also committed a minimal Windows implementation of
 > G_[v]spawn_ex(), as outlined below. It hasn't been tested yet,
 > though.

	JFYI: Gnulib contains execute (), which is meant to spawn
	processes on the POSIX and W32 systems in a portable manner:

$ nl -ba gnulib/lib/execute.h 
...
    23	/* Execute a command, optionally redirecting any of the three standard file
    24	   descriptors to /dev/null.  Return its exit code.
    25	   If it didn't terminate correctly, exit if exit_on_error is true, otherwise
    26	   return 127.
    27	   If ignore_sigpipe is true, consider a subprocess termination due to SIGPIPE
    28	   as equivalent to a success.  This is suitable for processes whose only
    29	   purpose is to write to standard output.
    30	   If slave_process is true, the child process will be terminated when its
    31	   creator receives a catchable fatal signal.
    32	   It is recommended that no signal is blocked or ignored while execute()
    33	   is called.  See pipe.h for the reason.  */
    34	extern int execute (const char *progname,
    35			    const char *prog_path, char **prog_argv,
    36			    bool ignore_sigpipe,
    37			    bool null_stdin, bool null_stdout, bool null_stderr,
    38			    bool slave_process, bool exit_on_error);
...
$ 

	Apparently, the only problem preventing the use of Gnulib in
	GRASS is that it may require a newer Autoconf.  (I'm still
	planning to get my hands on both of these problems.)

[...]