tools: enhance get_libs to get libraries for tests, too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

tools/ccanlint/tests/examples_compile.c

@@ -120,7 +120,7 @@ static char *example_lib_list(const void *ctx, struct manifest **deps)
 
 	/* FIXME: This doesn't uniquify. */
 	for (i = 0; i < talloc_array_length(deps); i++) {
-		libs = get_libs(ctx, deps[i]->dir, false, get_or_compile_info);
+		libs = get_libs(ctx, deps[i]->dir, NULL, get_or_compile_info);
 		for (j = 0; libs[j]; j++)
 			list = talloc_asprintf_append(list, "-l%s ", libs[j]);
 	}

tools/ccanlint/tests/module_links.c

@@ -47,7 +47,7 @@ static char *lib_list(const struct manifest *m)
 	char **libs;
 	char *ret = talloc_strdup(m, "");
 
-	libs = get_libs(m, m->dir, true, get_or_compile_info);
+	libs = get_libs(m, m->dir, "depends", get_or_compile_info);
 	for (i = 0; libs[i]; i++)
 		ret = talloc_asprintf_append(ret, "-l%s ", libs[i]);
 	return ret;

tools/ccanlint/tests/tests_compile.c

@@ -58,7 +58,7 @@ char *lib_list(const struct manifest *m, enum compile_type ctype)
 	char **libs;
 	char *ret = talloc_strdup(m, "");
 
-	libs = get_libs(m, m->dir, true, get_or_compile_info);
+	libs = get_libs(m, m->dir, "depends", get_or_compile_info);
 	for (i = 0; libs[i]; i++)
 		ret = talloc_asprintf_append(ret, "-l%s ", libs[i]);
 	return ret;

tools/depends.c

@@ -244,7 +244,24 @@ static char **get_one_libs(const void *ctx, const char *dir,
 	return lines;
 }
 
-char **get_libs(const void *ctx, const char *dir, bool recurse,
+/* O(n^2) but n is small. */
+static char **add_deps(char **deps1, char **deps2)
+{
+	unsigned int i, len;
+
+	len = talloc_array_length(deps1);
+
+	for (i = 0; deps2[i]; i++) {
+		if (have_dep(deps1, deps2[i]))
+			continue;
+		deps1 = talloc_realloc(NULL, deps1, char *, len + 1);
+		deps1[len-1] = talloc_steal(deps1, deps2[i]);
+		deps1[len++] = NULL;
+	}
+	return deps1;
+}
+
+char **get_libs(const void *ctx, const char *dir, const char *style,
 		char *(*get_info)(const void *ctx, const char *dir))
 {
 	char **deps, **libs;
@@ -253,8 +270,13 @@ char **get_libs(const void *ctx, const char *dir, bool recurse,
 	libs = get_one_libs(ctx, dir, get_info);
 	len = talloc_array_length(libs);
 
-	if (recurse) {
-		deps = get_deps(ctx, dir, "depends", true, get_info);
+	if (style) {
+		deps = get_deps(ctx, dir, style, true, get_info);
+		if (streq(style, "testdepends"))
+			deps = add_deps(deps,
+					get_deps(ctx, dir, "depends", true,
+						 get_info));
+
 		for (i = 0; deps[i]; i++) {
 			char **newlibs, *subdir;
 			size_t newlen;

tools/tools.h

@@ -31,8 +31,12 @@ char **get_deps(const void *ctx, const char *dir, const char *style,
 char **get_safe_ccan_deps(const void *ctx, const char *dir, const char *style,
 			  bool recurse);
 
-/* This also needs to compile the info file. */
-char **get_libs(const void *ctx, const char *dir, bool recurse,
+/* This also needs to compile the info file:
+ * style == NULL: don't recurse.
+ * style == depends: recurse dependencies.
+ * style == testdepends: recurse testdepends and depends.
+ */
+char **get_libs(const void *ctx, const char *dir, const char *style,
 		char *(*get_info)(const void *ctx, const char *dir));
 
 /* From tools.c */