Function find_my_pkglibexec_path

lightningd/lightningd.c:472–496

~ This returns the PKGLIBEXEC path which is where binaries get installed. * Note the `TAKES` annotation which indicates that the `my_path` parameter * can be take(); in which case, this function will handle freeing it. * * TAKES is only a convention unfortunately, and ignored by the compiler. */

 * TAKES is only a convention unfortunately, and ignored by the compiler.
 */
static const char *find_my_pkglibexec_path(struct lightningd *ld,
					   const char *my_path TAKES)
{
	const char *pkglibexecdir;

	/*~`path_join` is declared in ccan/path/path.h as:
	 *
	 *     char *path_join(const tal_t *ctx,
	 *                     const char *base TAKES, const char *a TAKES);
	 *
	 * So, as we promised with 'TAKES' in our own declaration, if the
	 * caller has called `take()` the `my_path` parameter, path_join()
	 * will free it. */
	pkglibexecdir = path_join(NULL, my_path, BINTOPKGLIBEXECDIR);

	/*~ The plugin dir is in ../libexec/c-lightning/plugins, which (unlike
	 * those given on the command line) does not need to exist. */
	plugins_set_builtin_plugins_dir(ld->plugins,
					path_join(tmpctx,
						  pkglibexecdir, "plugins"));

	/*~ Sometimes take() can be more efficient, since the routine can
	 * manipulate the string in place.  This is the case here. */
	return path_simplify(ld, take(pkglibexecdir));
}

/* Determine the correct daemon dir. */
static const char *find_daemon_dir(struct lightningd *ld, const char *argv0)