support: move kconfig stuff from package/config to support/kconfig

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

1 files changed, 265 insertions, 0 deletions

diff --git a/support/kconfig/util.c b/support/kconfig/util.c
new file mode 100644
index 000000000..8a5efaa17
--- /dev/null
+++ b/support/kconfig/util.c
@@ -0,0 +1,265 @@
+/*
+ * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
+ * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <string.h>
+#include "lkc.h"
+
+/* file already present in list? If not add it */
+struct file *file_lookup(const char *name)
+{
+	struct file *file;
+	const char *file_name = sym_expand_string_value(name);
+
+	for (file = file_list; file; file = file->next) {
+		if (!strcmp(name, file->name)) {
+			free((void *)file_name);
+			return file;
+		}
+	}
+
+	file = malloc(sizeof(*file));
+	memset(file, 0, sizeof(*file));
+	file->name = file_name;
+	file->next = file_list;
+	file_list = file;
+	return file;
+}
+
+static char* br2_symbol_printer(const char * const in)
+{
+	ssize_t i, j, len = strlen(in);
+	char *ret;
+	if (len < 1)
+		return NULL;
+	ret = malloc(len+1);
+	if (!ret) {
+		printf("Out of memory!");
+		exit(1);
+	}
+	memset(ret, 0, len+1);
+	i = j = 0;
+	if (strncmp("BR2_", in, 4) == 0)
+		i += 4;
+	if (strncmp("PACKAGE_", in + i, 8) == 0)
+		i += 8;
+	else if (strncmp("TARGET_", in + i, 7) == 0)
+		i += 7;
+	while (i <= len)
+		ret[j++] = tolower(in[i++]);
+	return ret;
+}
+
+/* write dependencies of the individual config-symbols */
+static int write_make_deps(const char *name)
+{
+	char *str;
+	char dir[PATH_MAX+1], buf[PATH_MAX+1], buf2[PATH_MAX+1];
+	struct menu *menu;
+	struct symbol *sym;
+	struct property *prop, *p;
+	unsigned done;
+	const char * const name_tmp = "..make.deps.tmp";
+	FILE *out;
+	if (!name)
+		name = ".auto.deps";
+
+	strcpy(dir, conf_get_configname());
+	str = strrchr(dir, '/');
+	if (str)
+		str[1] = 0;
+	else
+		dir[0] = 0;
+
+	sprintf(buf, "%s%s", dir, name_tmp);
+	out = fopen(buf, "w");
+	if (!out)
+		return 1;
+	fprintf(out, "# ATTENTION! This does not handle 'depends', just 'select'! \n"
+		"# See support/kconfig/util.c write_make_deps()\n#\n");
+	menu = &rootmenu;//rootmenu.list;
+	while (menu) {
+		sym = menu->sym;
+		if (!sym) {
+			if (!menu_is_visible(menu))
+				goto next;
+		} else if (!(sym->flags & SYMBOL_CHOICE)) {
+			sym_calc_value(sym);
+			if (sym->type == S_BOOLEAN
+			    && sym_get_tristate_value(sym) != no) {
+			    done = 0;
+			    for_all_prompts(sym, prop) {
+			        struct expr *e;
+//printf("\nname=%s\n", sym->name);
+			        for_all_properties(sym, p, P_SELECT) {
+				    e = p->expr;
+				    if (e && e->left.sym->name) {
+				        if (!done) {
+					    fprintf(out, "%s: $(BASE_TARGETS)", br2_symbol_printer(sym->name));
+					    done = 1;
+					}
+//printf("SELECTS %s\n",e->left.sym->name);
+					fprintf(out, " %s",br2_symbol_printer(e->left.sym->name));
+				    }
+				}
+				if (done)
+				    fprintf(out, "\n");
+#if 0
+				e = sym->rev_dep.expr;
+				if (e && e->type == E_SYMBOL
+					&& e->left.sym->name) {
+				    fprintf(out, "%s: %s", br2_symbol_printer(e->left.sym->name),
+						br2_symbol_printer(sym->name));
+printf("%s is Selected BY: %s", sym->name, e->left.sym->name);
+				}
+#endif
+			    }
+			}
+		}
+next:
+		if (menu->list) {
+			menu = menu->list;
+			continue;
+		}
+		if (menu->next)
+			menu = menu->next;
+		else while ((menu = menu->parent)) {
+			if (menu->next) {
+				menu = menu->next;
+				break;
+			}
+		}
+	}
+	fclose(out);
+	sprintf(buf2, "%s%s", dir, name);
+	rename(buf, buf2);
+	printf(_("#\n"
+		 "# make dependencies written to %s\n"
+		 "# ATTENTION buildroot devels!\n"
+		 "# See top of this file before playing with this auto-preprequisites!\n"
+		 "#\n"), name);
+	return 0;
+}
+
+/* write a dependency file as used by kbuild to track dependencies */
+int file_write_dep(const char *name)
+{
+	char *str;
+	char buf[PATH_MAX+1], buf2[PATH_MAX+1], dir[PATH_MAX+1];
+	struct symbol *sym, *env_sym;
+	struct expr *e;
+	struct file *file;
+	FILE *out;
+
+	if (!name)
+		name = ".kconfig.d";
+
+	strcpy(dir, conf_get_configname());
+	str = strrchr(dir, '/');
+	if (str)
+		str[1] = 0;
+	else
+		dir[0] = 0;
+
+	sprintf(buf, "%s..config.tmp", dir);
+	out = fopen(buf, "w");
+	if (!out)
+		return 1;
+	fprintf(out, "deps_config := \\\n");
+	for (file = file_list; file; file = file->next) {
+		if (file->next)
+			fprintf(out, "\t%s \\\n", file->name);
+		else
+			fprintf(out, "\t%s\n", file->name);
+	}
+	fprintf(out, "\n%s: \\\n"
+		     "\t$(deps_config)\n\n", conf_get_autoconfig_name());
+
+	expr_list_for_each_sym(sym_env_list, e, sym) {
+		struct property *prop;
+		const char *value;
+
+		prop = sym_get_env_prop(sym);
+		env_sym = prop_get_symbol(prop);
+		if (!env_sym)
+			continue;
+		value = getenv(env_sym->name);
+		if (!value)
+			value = "";
+		fprintf(out, "ifneq \"$(%s)\" \"%s\"\n", env_sym->name, value);
+		fprintf(out, "%s: FORCE\n", conf_get_autoconfig_name());
+		fprintf(out, "endif\n");
+	}
+
+	fprintf(out, "\n$(deps_config): ;\n");
+	fclose(out);
+	sprintf(buf2, "%s%s", dir, name);
+	rename(buf, buf2);
+	return write_make_deps(NULL);
+}
+
+
+/* Allocate initial growable string */
+struct gstr str_new(void)
+{
+	struct gstr gs;
+	gs.s = malloc(sizeof(char) * 64);
+	gs.len = 64;
+	gs.max_width = 0;
+	strcpy(gs.s, "\0");
+	return gs;
+}
+
+/* Allocate and assign growable string */
+struct gstr str_assign(const char *s)
+{
+	struct gstr gs;
+	gs.s = strdup(s);
+	gs.len = strlen(s) + 1;
+	gs.max_width = 0;
+	return gs;
+}
+
+/* Free storage for growable string */
+void str_free(struct gstr *gs)
+{
+	if (gs->s)
+		free(gs->s);
+	gs->s = NULL;
+	gs->len = 0;
+}
+
+/* Append to growable string */
+void str_append(struct gstr *gs, const char *s)
+{
+	size_t l;
+	if (s) {
+		l = strlen(gs->s) + strlen(s) + 1;
+		if (l > gs->len) {
+			gs->s   = realloc(gs->s, l);
+			gs->len = l;
+		}
+		strcat(gs->s, s);
+	}
+}
+
+/* Append printf formatted string to growable string */
+void str_printf(struct gstr *gs, const char *fmt, ...)
+{
+	va_list ap;
+	char s[10000]; /* big enough... */
+	va_start(ap, fmt);
+	vsnprintf(s, sizeof(s), fmt, ap);
+	str_append(gs, s);
+	va_end(ap);
+}
+
+/* Retrieve value of growable string */
+const char *str_get(struct gstr *gs)
+{
+	return gs->s;
+}
+