+/* If set, print all commands run, all output they give and exit status. */
+extern bool tools_verbose;
+bool PRINTF_FMT(4,5) run_command(const void *ctx,
+ unsigned int *time_ms,
+ char **output,
+ const char *fmt, ...);
+char *run_with_timeout(const void *ctx, const char *cmd,
+ bool *ok, unsigned *timeout_ms);
+const char *temp_dir(void);
+void keep_temp_dir(void);
+bool move_file(const char *oldname, const char *newname);
+
+void *do_tal_realloc(void *p, size_t size);
+
+/* Freed on exit: a good parent for auto cleanup. */
+tal_t *autofree(void);
+
+/* From compile.c.
+ *
+ * These all compile into a temporary dir, and return the filename.
+ * On failure they return NULL, and errmsg is set to compiler output.
+ */
+/* If set, say what we're compiling to. */
+extern bool compile_verbose;
+/* Compile multiple object files into a single. */
+char *link_objects(const void *ctx, const char *basename,
+ const char *objs, char **errmsg);
+/* Compile a single C file to an object file. Returns false if fails. */
+bool compile_object(const void *ctx, const char *cfile, const char *ccandir,
+ const char *compiler,
+ const char *cflags,
+ const char *outfile, char **output);
+/* Compile and link single C file, with object files, libs, etc. */
+bool compile_and_link(const void *ctx, const char *cfile, const char *ccandir,
+ const char *objs,
+ const char *compiler, const char *cflags,
+ const char *libs, const char *outfile, char **output);
+
+/* Returns a file in temp_dir() */
+char *temp_file(const void *ctx, const char *extension, const char *srcname);
+
+/* Default wait for run_command. Should never time out. */
+extern const unsigned int default_timeout_ms;
+
+/* Get ccan/ top dir, given a directory within it. */
+const char *find_ccan_dir(const char *base);