build: add new menuconfig code based on linux 3.9

SVN-Revision: 36361

1 files changed, 83 insertions, 58 deletions

diff --git a/scripts/config/zconf.l b/scripts/config/zconf.l
index 71107a56e7..bce3da6653 100644
--- a/scripts/config/zconf.l
+++ b/scripts/config/zconf.l
@@ -1,5 +1,6 @@
-%option backup nostdinit noyywrap never-interactive full ecs
-%option 8bit backup nodefault perf-report perf-report
+%option nostdinit noyywrap never-interactive full ecs
+%option 8bit nodefault perf-report perf-report
+%option noinput
 %x COMMAND HELP STRING PARAM
 %{
 /*
@@ -14,7 +15,6 @@
 #include <unistd.h>
 #include <glob.h>
 
-#define LKC_DIRECT_LINK
 #include "lkc.h"
 
 #define START_STRSIZE	16
@@ -39,15 +39,15 @@ static int last_ts, first_ts;
 static void zconf_endhelp(void);
 static void zconf_endfile(void);
 
-void new_string(void)
+static void new_string(void)
 {
-	text = malloc(START_STRSIZE);
+	text = xmalloc(START_STRSIZE);
 	text_asize = START_STRSIZE;
 	text_size = 0;
 	*text = 0;
 }
 
-void append_string(const char *str, int size)
+static void append_string(const char *str, int size)
 {
 	int new_size = text_size + size + 1;
 	if (new_size > text_asize) {
@@ -61,9 +61,9 @@ void append_string(const char *str, int size)
 	text[text_size] = 0;
 }
 
-void alloc_string(const char *str, int size)
+static void alloc_string(const char *str, int size)
 {
-	text = malloc(size + 1);
+	text = xmalloc(size + 1);
 	memcpy(text, str, size);
 	text[size] = 0;
 }
@@ -96,7 +96,7 @@ n	[A-Za-z0-9_]
 
 <COMMAND>{
 	{n}+	{
-		struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
+		const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
 		BEGIN(PARAM);
 		current_pos.file = current_file;
 		current_pos.lineno = current_file->lineno;
@@ -132,7 +132,7 @@ n	[A-Za-z0-9_]
 	\n	BEGIN(INITIAL); current_file->lineno++; return T_EOL;
 	---	/* ignore */
 	({n}|[-/.])+	{
-		struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
+		const struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
 		if (id && id->flags & TF_PARAM) {
 			zconflval.id = id;
 			return id->token;
@@ -218,6 +218,11 @@ n	[A-Za-z0-9_]
 		append_string("\n", 1);
 	}
 	[^ \t\n].* {
+		while (yyleng) {
+			if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t'))
+				break;
+			yyleng--;
+		}
 		append_string(yytext, yyleng);
 		if (!first_ts)
 			first_ts = last_ts;
@@ -266,7 +271,7 @@ FILE *zconf_fopen(const char *name)
 	FILE *f;
 
 	f = fopen(name, "r");
-	if (!f && name[0] != '/') {
+	if (!f && name != NULL && name[0] != '/') {
 		env = getenv(SRCTREE);
 		if (env) {
 			sprintf(fullname, "%s/%s", env, name);
@@ -284,73 +289,93 @@ void zconf_initscan(const char *name)
 		exit(1);
 	}
 
-	current_buf = malloc(sizeof(*current_buf));
+	current_buf = xmalloc(sizeof(*current_buf));
 	memset(current_buf, 0, sizeof(*current_buf));
 
 	current_file = file_lookup(name);
 	current_file->lineno = 1;
-	current_file->flags = FILE_BUSY;
 }
 
-void zconf_nextfile(const char *name)
+static void __zconf_nextfile(const char *name)
 {
-	size_t i;
-	int retval;
-	glob_t files;
-	char *filename;
-	struct file *file;
-	struct buffer *buf;
+	struct file *iter;
+	struct file *file = file_lookup(name);
+	struct buffer *buf = xmalloc(sizeof(*buf));
+	memset(buf, 0, sizeof(*buf));
 
-	retval = glob(name, GLOB_ERR | GLOB_MARK, NULL, &files);
-	if (retval == GLOB_NOMATCH)
-		return;
-
-	if (retval == GLOB_NOSPACE || retval == GLOB_ABORTED) {
-		printf("%s:%d: glob failed: %s \"%s\"\n", zconf_curname(), zconf_lineno(),
-			retval == GLOB_NOSPACE ? "failed to allocate memory" :
-				retval == GLOB_ABORTED ? "read error" : "no match",
-			name);
+	current_buf->state = YY_CURRENT_BUFFER;
+	yyin = zconf_fopen(file->name);
+	if (!yyin) {
+		printf("%s:%d: can't open file \"%s\"\n",
+		    zconf_curname(), zconf_lineno(), file->name);
 		exit(1);
 	}
-
-	for (i = files.gl_pathc-1; i != (size_t)-1; --i) {
-		filename = files.gl_pathv[i];
-
-		file = file_lookup(filename);
-		buf = malloc(sizeof(*buf));
-		memset(buf, 0, sizeof(*buf));
-		current_buf->state = YY_CURRENT_BUFFER;
-		zconfin = zconf_fopen(filename);
-		if (!zconfin) {
-			printf("%s:%d: can't open file \"%s\"\n",
-				zconf_curname(), zconf_lineno(), filename);
+	yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
+	buf->parent = current_buf;
+	current_buf = buf;
+
+	for (iter = current_file->parent; iter; iter = iter->parent ) {
+		if (!strcmp(current_file->name,iter->name) ) {
+			printf("%s:%d: recursive inclusion detected. "
+			       "Inclusion path:\n  current file : '%s'\n",
+			       zconf_curname(), zconf_lineno(),
+			       zconf_curname());
+			iter = current_file->parent;
+			while (iter && \
+			       strcmp(iter->name,current_file->name)) {
+				printf("  included from: '%s:%d'\n",
+				       iter->name, iter->lineno-1);
+				iter = iter->parent;
+			}
+			if (iter)
+				printf("  included from: '%s:%d'\n",
+				       iter->name, iter->lineno+1);
 			exit(1);
 		}
-		zconf_switch_to_buffer(zconf_create_buffer(zconfin,YY_BUF_SIZE));
-		buf->parent = current_buf;
-		current_buf = buf;
+	}
+	file->lineno = 1;
+	file->parent = current_file;
+	current_file = file;
+}
 
-		if (file->flags & FILE_BUSY) {
-			printf("recursive scan (%s)?\n", filename);
-			exit(1);
-		}
-		if (file->flags & FILE_SCANNED) {
-			printf("file %s already scanned?\n", filename);
-			exit(1);
+void zconf_nextfile(const char *name)
+{
+	glob_t gl;
+	int err;
+	int i;
+
+	err = glob(name, GLOB_ERR | GLOB_MARK, NULL, &gl);
+	if (err) {
+		const char *reason = "unknown error";
+
+		switch (err) {
+		case GLOB_NOSPACE:
+			reason = "out of memory";
+			break;
+		case GLOB_ABORTED:
+			reason = "read error";
+			break;
+		case GLOB_NOMATCH:
+			reason = "No files found";
+			break;
+		default:
+			break;
 		}
-		file->flags |= FILE_BUSY;
-		file->lineno = 1;
-		file->parent = current_file;
-		current_file = file;
+
+		printf("%s:%d: glob failed: %s \"%s\"\n", zconf_curname(), zconf_lineno(),
+			reason, name);
+
+		exit(1);
 	}
+
+	for (i = 0; i < gl.gl_pathc; i++)
+		__zconf_nextfile(gl.gl_pathv[i]);
 }
 
 static void zconf_endfile(void)
 {
 	struct buffer *parent;
 
-	current_file->flags |= FILE_SCANNED;
-	current_file->flags &= ~FILE_BUSY;
 	current_file = current_file->parent;
 
 	parent = current_buf->parent;
@@ -368,7 +393,7 @@ int zconf_lineno(void)
 	return current_pos.lineno;
 }
 
-char *zconf_curname(void)
+const char *zconf_curname(void)
 {
 	return current_pos.file ? current_pos.file->name : "<none>";
 }