Roland Ver. 4.5 Technical Information PDF herunterladen (Seite 150)

140 GNU make

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <unistd.h>

#include <errno.h>

#include <gnumake.h>

int plugin_is_GPL_compatible;

char *

gen_tmpfile(const char *nm, int argc, char **argv)

{

int fd;

/* Compute the size of the filename and allocate space for it. */

int len = strlen (argv[0]) + 6 + 1;

char *buf = gmk_alloc (len);

strcpy (buf, argv[0]);

strcat (buf, "XXXXXX");

fd = mkstemp(buf);

if (fd >= 0)

{

/* Don’t leak the file descriptor. */

close (fd);

return buf;

}

/* Failure. */

fprintf (stderr, "mkstemp(%s) failed: %s\n", buf, strerror (errno));

gmk_free (buf);

return NULL;

}

int

mk_temp_gmk_setup ()

{

/* Register the function with make name "mk-temp". */

gmk_add_function ("mk-temp", gen_tmpfile, 1, 1, 1);

return 1;

}

Next, we will write a makeﬁle that can build this shared object, load it, and use it:

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Roland Ver. 4.5 Technical Information Seite 150