+static void show_tmpdir(const char *dir)
+{
+ printf("You can find ccanlint working files in '%s'\n", dir);
+}
+
+static char *keep_tests(void *unused)
+{
+ keep_results = true;
+
+ /* Don't automatically destroy temporary dir. */
+ keep_temp_dir();
+ tal_add_destructor(temp_dir(), show_tmpdir);
+ return NULL;
+}
+
+static bool remove_test(struct dgraph_node *node, const char *why)
+{
+ struct ccanlint *c = container_of(node, struct ccanlint, node);
+ c->skip = why;
+ dgraph_clear_node(node);
+ return true;
+}
+
+static char *exclude_test(const char *testname, void *unused)
+{
+ struct ccanlint *i = find_test(testname);
+ if (!i)
+ return tal_fmt(NULL, "No test %s to --exclude", testname);
+
+ /* Remove this, and everything which depends on it. */
+ dgraph_traverse_from(&i->node, remove_test, "excluded on command line");
+ remove_test(&i->node, "excluded on command line");
+ return NULL;
+}
+
+static void skip_test_and_deps(struct ccanlint *c, const char *why)
+{
+ /* Skip this, and everything which depends on us. */
+ dgraph_traverse_from(&c->node, skip_test, why);
+ skip_test(&c->node, why);
+}
+
+static char *list_tests(void *arg)
+{
+ struct ccanlint *i;
+
+ printf("Tests:\n");
+ /* This makes them print in topological order. */
+ while ((i = get_next_test()) != NULL) {
+ printf(" %-25s %s\n", i->key, i->name);
+ dgraph_clear_node(&i->node);
+ strmap_del(&tests, i->key, NULL);
+ }
+ exit(0);
+}
+
+static bool draw_test(const char *member, struct ccanlint *c, const char *style)
+{
+ /*
+ * todo: escape labels in case ccanlint test keys have
+ * characters interpreted as GraphViz syntax.
+ */
+ printf("\t\"%p\" [label=\"%s\"%s]\n", c, c->key, style);
+ return true;
+}
+
+static void test_dgraph_vertices(const char *style)
+{
+ strmap_iterate(&tests, draw_test, style);
+}
+
+static bool draw_edges(const char *member, struct ccanlint *c, void *unused)
+{
+ struct dgraph_edge *e;
+
+ dgraph_for_each_edge(&c->node, e, DGRAPH_FROM) {
+ struct ccanlint *to = container_of(e->n[DGRAPH_TO],
+ struct ccanlint,
+ node);
+ printf("\t\"%p\" -> \"%p\"\n", c->name, to->name);
+ }
+ return true;
+}
+
+static void test_dgraph_edges(void)
+{
+ strmap_iterate(&tests, draw_edges, NULL);
+}
+
+static char *test_dependency_graph(void *arg)
+{
+ puts("digraph G {");
+
+ test_dgraph_vertices("");
+ test_dgraph_edges();
+
+ puts("}");
+
+ exit(0);
+}
+
+static void add_options(struct ccanlint *test, char **options,
+ unsigned int num_options)
+{
+ unsigned int num;
+
+ if (!test->options)
+ num = 0;
+ else
+ /* -1, because last one is NULL. */
+ num = tal_count(test->options) - 1;
+
+ tal_resize(&test->options, num + num_options + 1);
+ memcpy(&test->options[num], options, (num_options + 1)*sizeof(char *));
+}
+
+void add_info_options(struct ccan_file *info)
+{
+ struct doc_section *d;
+ unsigned int i;
+ struct ccanlint *test;
+
+ list_for_each(get_ccan_file_docs(info), d, list) {
+ if (!streq(d->type, "ccanlint"))
+ continue;
+
+ for (i = 0; i < d->num_lines; i++) {
+ char **words = tal_strsplit(d, d->lines[i], " \t",
+ STR_NO_EMPTY);
+ if (!words[0])
+ continue;
+
+ if (strncmp(words[0], "//", 2) == 0)
+ continue;
+
+ test = find_test(words[0]);
+ if (!test) {
+ warnx("%s: unknown ccanlint test '%s'",
+ info->fullname, words[0]);
+ continue;
+ }
+
+ if (!words[1]) {
+ warnx("%s: no argument to test '%s'",
+ info->fullname, words[0]);
+ continue;
+ }
+
+ /* Known failure? */
+ if (strcasecmp(words[1], "FAIL") == 0) {
+ if (!targeting)
+ skip_test_and_deps(test,
+ "excluded in _info"
+ " file");
+ } else {
+ if (!test->takes_options)
+ warnx("%s: %s doesn't take options",
+ info->fullname, words[0]);
+ add_options(test, words+1, tal_count(words)-1);
+ }
+ }
+ }
+}
+
+/* If options are of form "filename:<option>" they only apply to that file */
+char **per_file_options(const struct ccanlint *test, struct ccan_file *f)
+{
+ char **ret;
+ unsigned int i, j = 0;
+
+ /* Fast path. */
+ if (!test->options[0])
+ return test->options;
+
+ ret = tal_arr(f, char *, tal_count(test->options));
+ for (i = 0; test->options[i]; i++) {
+ char *optname;
+
+ if (!test->options[i] || !strchr(test->options[i], ':')) {
+ optname = test->options[i];
+ } else if (strstarts(test->options[i], f->name)
+ && test->options[i][strlen(f->name)] == ':') {
+ optname = test->options[i] + strlen(f->name) + 1;
+ } else
+ continue;
+
+ /* FAIL overrides anything else. */
+ if (streq(optname, "FAIL")) {
+ ret = tal_arr(f, char *, 2);
+ ret[0] = (char *)"FAIL";
+ ret[1] = NULL;
+ return ret;
+ }
+ ret[j++] = optname;
+ }
+ ret[j] = NULL;
+
+ /* Shrink it to size so tal_array_length() works as expected. */
+ tal_resize(&ret, j + 1);
+ return ret;
+}
+
+static char *opt_set_const_charp(const char *arg, const char **p)
+{
+ return opt_set_charp(arg, cast_const2(char **, p));
+}
+
+static char *opt_set_target(const char *arg, struct dgraph_node *all)
+{
+ struct ccanlint *t = find_test(arg);
+ if (!t)
+ return tal_fmt(NULL, "unknown --target %s", arg);
+
+ targeting = true;
+ dgraph_add_edge(&t->node, all);
+ return NULL;
+}
+
+static bool run_tests(struct dgraph_node *all,
+ bool summary,
+ bool deps_fail_ignore,
+ struct manifest *m,
+ const char *prefix)
+{
+ struct run_info run;
+ const char *comment = "";
+
+ run.quiet = summary;
+ run.m = m;
+ run.prefix = prefix;
+ run.score = run.total = 0;
+ run.pass = true;
+
+ non_ccan_deps = build_failed = false;
+
+ dgraph_traverse_to(all, run_test, &run);
+
+ /* We can completely fail if we're missing external stuff: ignore */
+ if (deps_fail_ignore && non_ccan_deps && build_failed) {
+ comment = " (missing non-ccan dependencies?)";
+ run.pass = true;
+ }
+ printf("%sTotal score: %u/%u%s\n",
+ prefix, run.score, run.total, comment);
+
+ return run.pass;
+}
+
+static bool add_to_all(const char *member, struct ccanlint *c,
+ struct dgraph_node *all)
+{
+ /* If we're excluded on cmdline, don't add. */
+ if (!c->skip)
+ dgraph_add_edge(&c->node, all);
+ return true;
+}
+
+static bool test_module(struct dgraph_node *all,
+ const char *dir, const char *prefix, bool summary,
+ bool deps_fail_ignore)
+{
+ struct manifest *m = get_manifest(autofree(), dir);
+ char *testlink = path_join(NULL, temp_dir(), "test");
+
+ /* Create a symlink from temp dir back to src dir's
+ * test directory. */
+ unlink(testlink);
+ if (symlink(path_join(m, dir, "test"), testlink) != 0)
+ err(1, "Creating test symlink in %s", temp_dir());
+
+ return run_tests(all, summary, deps_fail_ignore, m, prefix);
+}
+
+int main(int argc, char *argv[])
+{
+ bool summary = false, pass = true, deps_fail_ignore = false;
+ unsigned int i;
+ const char *prefix = "";
+ char *cwd = path_cwd(NULL), *dir;
+ struct ccanlint top; /* cannot_run may try to set ->can_run */
+ const char *override_compiler = NULL, *override_cflags = NULL;
+
+ /* Empty graph node to which we attach everything else. */
+ dgraph_init_node(&top.node);
+
+ opt_register_early_noarg("--verbose|-v", opt_inc_intval, &verbose,
+ "verbose mode (up to -vvvv)");
+ opt_register_noarg("-n|--safe-mode", opt_set_bool, &safe_mode,
+ "do not compile anything");
+ opt_register_noarg("-l|--list-tests", list_tests, NULL,
+ "list tests ccanlint performs (and exit)");
+ opt_register_noarg("--test-dep-graph", test_dependency_graph, NULL,
+ "print dependency graph of tests in Graphviz .dot format");
+ opt_register_noarg("-k|--keep", keep_tests, NULL,
+ "do not delete ccanlint working files");
+ opt_register_noarg("--summary|-s", opt_set_bool, &summary,
+ "simply give one line summary");
+ opt_register_arg("-x|--exclude <testname>", exclude_test, NULL, NULL,
+ "exclude <testname> (can be used multiple times)");
+ opt_register_arg("--timeout <milleseconds>", opt_set_uintval,
+ NULL, &timeout,
+ "ignore (terminate) tests that are slower than this");
+ opt_register_arg("-t|--target <testname>", opt_set_target, NULL,
+ &top.node,
+ "only run one test (and its prerequisites)");
+ opt_register_arg("--compiler <compiler>", opt_set_const_charp,
+ NULL, &override_compiler, "set the compiler");
+ opt_register_arg("--cflags <flags>", opt_set_const_charp,
+ NULL, &override_cflags, "set the compiler flags");
+ opt_register_noarg("--deps-fail-ignore", opt_set_bool,
+ &deps_fail_ignore,
+ "don't fail if external dependencies are missing");
+ opt_register_noarg("-?|-h|--help", opt_usage_and_exit,
+ "\nA program for checking and guiding development"
+ " of CCAN modules.",
+ "This usage message");
+
+ /* Do verbose before anything else... */
+ opt_early_parse(argc, argv, opt_log_stderr_exit);
+
+ /* We move into temporary directory, so gcov dumps its files there. */
+ if (chdir(temp_dir()) != 0)
+ err(1, "Error changing to %s temporary dir", temp_dir());