util/kconfig: Uprev to Linux 5.16's kconfig
Linux 5.16 saw a significant rewrite in the boolean handling which reduces our change set. On the other hand, it's all new code. Comparing the config.build and config.h files generated by `util/abuild/abuild -C`, only a few lines of comment in the header changed. Change-Id: I52984e15a48236ddf228707aec85e90f71aa4382 Signed-off-by: Patrick Georgi <patrick@coreboot.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/66045 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
This commit is contained in:
Patrick Georgi
committed by
Patrick Georgi
Patrick Georgi
parent
14cedd97a5
commit
4c9b9e9709
@@ -11,6 +11,7 @@
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#include <fcntl.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@@ -129,45 +130,22 @@ static size_t depfile_prefix_len;
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/* touch depfile for symbol 'name' */
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static int conf_touch_dep(const char *name)
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{
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int fd, ret;
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char *d;
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int fd;
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/* check overflow: prefix + name + '\0' must fit in buffer. */
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if (depfile_prefix_len + strlen(name) + 1 > sizeof(depfile_path))
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return -1;
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d = depfile_path + depfile_prefix_len;
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strcpy(d, name);
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strcpy(depfile_path + depfile_prefix_len, name);
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/* Assume directory path already exists. */
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fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
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if (fd == -1) {
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if (errno != ENOENT)
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return -1;
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ret = make_parent_dir(depfile_path);
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if (ret)
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return ret;
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/* Try it again. */
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fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
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if (fd == -1)
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return -1;
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}
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if (fd == -1)
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return -1;
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close(fd);
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return 0;
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}
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struct conf_printer {
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void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
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void (*print_comment)(FILE *, const char *, void *);
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};
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#ifdef __MINGW32__
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#define mkdir(_n,_p) mkdir((_n))
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#endif
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static void conf_warning(const char *fmt, ...)
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__attribute__ ((format (printf, 1, 2)));
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@@ -177,6 +155,10 @@ static void conf_message(const char *fmt, ...)
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static const char *conf_filename;
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static int conf_lineno, conf_warnings;
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#ifdef __MINGW32__
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#define mkdir(_n,_p) mkdir((_n))
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#endif
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static void conf_warning(const char *fmt, ...)
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{
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va_list ap;
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@@ -241,6 +223,13 @@ static const char *conf_get_autoconfig_name(void)
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return name ? name : "include/config/auto.conf";
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}
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static const char *conf_get_autoheader_name(void)
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{
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char *name = getenv("KCONFIG_AUTOHEADER");
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return name ? name : "include/generated/autoconf.h";
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}
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static const char *conf_get_autobase_name(void)
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{
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char *name = getenv("KCONFIG_SPLITCONFIG");
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@@ -621,186 +610,186 @@ int conf_read(const char *name)
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return 0;
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}
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struct comment_style {
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const char *decoration;
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const char *prefix;
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const char *postfix;
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};
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static const struct comment_style comment_style_pound = {
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.decoration = "#",
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.prefix = "#",
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.postfix = "#",
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};
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static const struct comment_style comment_style_c = {
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.decoration = " *",
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.prefix = "/*",
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.postfix = " */",
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};
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static void conf_write_heading(FILE *fp, const struct comment_style *cs)
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{
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fprintf(fp, "%s\n", cs->prefix);
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fprintf(fp, "%s Automatically generated file; DO NOT EDIT.\n",
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cs->decoration);
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fprintf(fp, "%s %s\n", cs->decoration, rootmenu.prompt->text);
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fprintf(fp, "%s\n", cs->postfix);
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}
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/* The returned pointer must be freed on the caller side */
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static char *escape_string_value(const char *in)
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{
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const char *p;
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char *out;
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size_t len;
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len = strlen(in) + strlen("\"\"") + 1;
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p = in;
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while (1) {
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p += strcspn(p, "\"\\");
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if (p[0] == '\0')
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break;
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len++;
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p++;
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}
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out = xmalloc(len);
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out[0] = '\0';
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strcat(out, "\"");
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p = in;
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while (1) {
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len = strcspn(p, "\"\\");
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strncat(out, p, len);
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p += len;
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if (p[0] == '\0')
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break;
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strcat(out, "\\");
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strncat(out, p++, 1);
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}
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strcat(out, "\"");
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return out;
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}
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/*
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* Kconfig configuration printer
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*
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* This printer is used when generating the resulting configuration after
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* kconfig invocation and `defconfig' files. Unset symbol might be omitted by
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* passing a non-NULL argument to the printer.
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*
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*/
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static void
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kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
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enum output_n { OUTPUT_N, OUTPUT_N_AS_UNSET, OUTPUT_N_NONE };
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static void __print_symbol(FILE *fp, struct symbol *sym, enum output_n output_n,
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bool escape_string)
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{
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const char *val;
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char *escaped = NULL;
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if (sym->type == S_UNKNOWN)
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return;
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val = sym_get_string_value(sym);
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if ((sym->type == S_BOOLEAN || sym->type == S_TRISTATE) &&
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output_n != OUTPUT_N && *val == 'n') {
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if (output_n == OUTPUT_N_AS_UNSET)
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fprintf(fp, "# %s%s is not set\n", CONFIG_, sym->name);
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return;
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}
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if (sym->type == S_STRING && escape_string) {
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escaped = escape_string_value(val);
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val = escaped;
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}
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fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, val);
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free(escaped);
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}
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static void print_symbol_for_dotconfig(FILE *fp, struct symbol *sym)
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{
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__print_symbol(fp, sym, OUTPUT_N_AS_UNSET, true);
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}
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static void print_symbol_for_autoconf(FILE *fp, struct symbol *sym)
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{
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int print_negatives = getenv("KCONFIG_NEGATIVES") != NULL;
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enum output_n out = OUTPUT_N_NONE;
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if (print_negatives) {
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out = OUTPUT_N;
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}
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__print_symbol(fp, sym, out, true);
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}
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void print_symbol_for_listconfig(struct symbol *sym)
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{
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__print_symbol(stdout, sym, OUTPUT_N, true);
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}
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static void print_symbol_for_c(FILE *fp, struct symbol *sym)
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{
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const char *val;
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const char *sym_suffix = "";
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const char *val_prefix = "";
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char *escaped = NULL;
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if (sym->type == S_UNKNOWN)
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return;
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val = sym_get_string_value(sym);
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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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if (*value == 'n') {
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bool skip_unset = (arg != NULL);
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if (!skip_unset)
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fprintf(fp, "# %s%s is not set\n",
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CONFIG_, sym->name);
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return;
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}
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break;
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default:
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break;
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}
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fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
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}
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static void
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kconfig_print_comment(FILE *fp, const char *value, void *arg)
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{
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const char *p = value;
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size_t l;
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for (;;) {
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l = strcspn(p, "\n");
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fprintf(fp, "#");
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if (l) {
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fprintf(fp, " ");
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xfwrite(p, l, 1, fp);
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p += l;
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}
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fprintf(fp, "\n");
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if (*p++ == '\0')
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break;
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}
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}
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static struct conf_printer kconfig_printer_cb =
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{
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.print_symbol = kconfig_print_symbol,
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.print_comment = kconfig_print_comment,
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};
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/*
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* Header printer
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*
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* This printer is used when generating the `include/generated/autoconf.h' file.
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*/
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static void
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header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
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{
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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE: {
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const char *suffix = "";
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switch (*value) {
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switch (*val) {
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case 'n':
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if (getenv("KCONFIG_NEGATIVES") != NULL)
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fprintf(fp, "#define %s%s%s 0\n",
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CONFIG_, sym->name, suffix);
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break;
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if (getenv("KCONFIG_NEGATIVES") != NULL) {
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val = "0";
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break;
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}
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return;
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case 'm':
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suffix = "_MODULE";
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sym_suffix = "_MODULE";
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/* fall through */
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default:
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fprintf(fp, "#define %s%s%s 1\n",
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CONFIG_, sym->name, suffix);
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val = "1";
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}
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break;
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}
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case S_HEX: {
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const char *prefix = "";
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if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
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prefix = "0x";
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if (value[0] == '\0') {
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/*
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* prefix is reset to remain closer to the older
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* coreboot patch. No need to keep this once kconfig
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* is fully upreved
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*/
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prefix = "";
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value = "0";
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}
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fprintf(fp, "#define %s%s %s%s\n",
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CONFIG_, sym->name, prefix, value);
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break;
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}
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case S_STRING:
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if (value[0] == '\0')
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break;
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if (!(sym->flags & SYMBOL_WRITE))
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break;
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case S_HEX:
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if (val[0] != '0' || (val[1] != 'x' && val[1] != 'X'))
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val_prefix = "0x";
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/* fall through */
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case S_INT:
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fprintf(fp, "#define %s%s %s\n",
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CONFIG_, sym->name, value[0]?value:"0");
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break;
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default:
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break;
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}
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}
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static void
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header_print_comment(FILE *fp, const char *value, void *arg)
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{
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const char *p = value;
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size_t l;
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fprintf(fp, "/*\n");
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for (;;) {
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l = strcspn(p, "\n");
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fprintf(fp, " *");
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if (l) {
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fprintf(fp, " ");
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xfwrite(p, l, 1, fp);
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p += l;
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if (val[0] == '\0') {
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val = "0";
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val_prefix = "";
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}
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fprintf(fp, "\n");
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if (*p++ == '\0')
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break;
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}
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fprintf(fp, " */\n");
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}
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static struct conf_printer header_printer_cb =
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{
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.print_symbol = header_print_symbol,
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.print_comment = header_print_comment,
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};
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static void conf_write_symbol(FILE *fp, struct symbol *sym,
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struct conf_printer *printer, void *printer_arg)
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{
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const char *str;
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switch (sym->type) {
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case S_UNKNOWN:
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break;
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case S_STRING:
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str = sym_get_string_value(sym);
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str = sym_escape_string_value(str);
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printer->print_symbol(fp, sym, str, printer_arg);
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free((void *)str);
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break;
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escaped = escape_string_value(val);
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val = escaped;
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default:
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str = sym_get_string_value(sym);
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printer->print_symbol(fp, sym, str, printer_arg);
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break;
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}
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}
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static void
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conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
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{
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char buf[256];
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fprintf(fp, "#define %s%s%s %s%s\n", CONFIG_, sym->name, sym_suffix,
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val_prefix, val);
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snprintf(buf, sizeof(buf),
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"\n"
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"Automatically generated file; DO NOT EDIT.\n"
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"%s\n",
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rootmenu.prompt->text);
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printer->print_comment(fp, buf, printer_arg);
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free(escaped);
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}
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/*
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@@ -859,7 +848,7 @@ int conf_write_defconfig(const char *filename)
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goto next_menu;
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}
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}
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conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
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print_symbol_for_dotconfig(out, sym);
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}
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next_menu:
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if (menu->list != NULL) {
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@@ -880,16 +869,6 @@ next_menu:
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return 0;
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}
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static int conf_mktemp(const char *path, char *tmpfile)
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{
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if (snprintf(tmpfile, PATH_MAX, "%s.tmp.XXXXXX", path) >= PATH_MAX) {
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errno = EOVERFLOW;
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return -1;
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}
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return mkstemp(tmpfile);
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}
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int conf_write(const char *name)
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{
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FILE *out;
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@@ -929,7 +908,7 @@ int conf_write(const char *name)
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if (!out)
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return 1;
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conf_write_heading(out, &kconfig_printer_cb, NULL);
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conf_write_heading(out, &comment_style_pound);
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if (!conf_get_changed())
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sym_clear_all_valid();
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@@ -956,7 +935,7 @@ int conf_write(const char *name)
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need_newline = false;
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}
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sym->flags |= SYMBOL_WRITTEN;
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conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
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print_symbol_for_dotconfig(out, sym);
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}
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next:
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@@ -1006,37 +985,50 @@ next:
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}
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/* write a dependency file as used by kbuild to track dependencies */
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static int conf_write_dep(const char *name)
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static int conf_write_autoconf_cmd(const char *autoconf_name)
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{
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char name[PATH_MAX], tmp[PATH_MAX];
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struct file *file;
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FILE *out;
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int ret;
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ret = snprintf(name, sizeof(name), "%s.cmd", autoconf_name);
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if (ret >= sizeof(name)) /* check truncation */
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return -1;
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if (make_parent_dir(name))
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return 1;
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char filename[PATH_MAX];
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int fd = conf_mktemp(name, filename);
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if (fd == -1)
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return 1;
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return -1;
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out = fdopen(fd, "w");
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if (!out)
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return 1;
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fprintf(out, "deps_config := \\\n");
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for (file = file_list; file; file = file->next) {
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if (file->next)
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fprintf(out, "\t%s \\\n", file->name);
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else
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fprintf(out, "\t%s\n", file->name);
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ret = snprintf(tmp, sizeof(tmp), "%s.cmd.tmp", autoconf_name);
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if (ret >= sizeof(tmp)) /* check truncation */
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return -1;
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out = fopen(tmp, "w");
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if (!out) {
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perror("fopen");
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return -1;
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}
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fprintf(out, "\n%s: \\\n"
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"\t$(deps_config)\n\n", conf_get_autoconfig_name());
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env_write_dep(out, conf_get_autoconfig_name());
|
||||
fprintf(out, "deps_config := \\\n");
|
||||
for (file = file_list; file; file = file->next)
|
||||
fprintf(out, "\t%s \\\n", file->name);
|
||||
|
||||
fprintf(out, "\n%s: $(deps_config)\n\n", autoconf_name);
|
||||
|
||||
env_write_dep(out, autoconf_name);
|
||||
|
||||
fprintf(out, "\n$(deps_config): ;\n");
|
||||
|
||||
if (ferror(out)) /* error check for all fprintf() calls */
|
||||
return -1;
|
||||
|
||||
fclose(out);
|
||||
|
||||
rename(filename, name);
|
||||
if (rename(tmp, name)) {
|
||||
perror("rename");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@@ -1112,77 +1104,84 @@ static int conf_touch_deps(void)
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __conf_write_autoconf(const char *filename,
|
||||
void (*print_symbol)(FILE *, struct symbol *),
|
||||
const struct comment_style *comment_style)
|
||||
{
|
||||
char tmp[PATH_MAX];
|
||||
FILE *file;
|
||||
struct symbol *sym;
|
||||
int ret, i;
|
||||
|
||||
if (make_parent_dir(filename))
|
||||
return -1;
|
||||
|
||||
ret = snprintf(tmp, sizeof(tmp), "%s.tmp", filename);
|
||||
if (ret >= sizeof(tmp)) /* check truncation */
|
||||
return -1;
|
||||
|
||||
file = fopen(tmp, "w");
|
||||
if (!file) {
|
||||
perror("fopen");
|
||||
return -1;
|
||||
}
|
||||
|
||||
conf_write_heading(file, comment_style);
|
||||
|
||||
int print_negatives = getenv("KCONFIG_NEGATIVES") != NULL;
|
||||
for_all_symbols(i, sym)
|
||||
if (((sym->flags & SYMBOL_WRITE) || (print_negatives && sym->type != S_STRING)) && sym->name)
|
||||
print_symbol(file, sym);
|
||||
|
||||
/* check possible errors in conf_write_heading() and print_symbol() */
|
||||
if (ferror(file))
|
||||
return -1;
|
||||
|
||||
fclose(file);
|
||||
|
||||
if (rename(tmp, filename)) {
|
||||
perror("rename");
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int conf_write_autoconf(int overwrite)
|
||||
{
|
||||
struct symbol *sym;
|
||||
const char *name;
|
||||
const char *autoconf_name = conf_get_autoconfig_name();
|
||||
FILE *out, *out_h;
|
||||
int i;
|
||||
int print_negatives = getenv("KCONFIG_NEGATIVES") != NULL;
|
||||
int ret, i;
|
||||
|
||||
if (!overwrite && is_present(autoconf_name))
|
||||
return 0;
|
||||
|
||||
char autoconfcmd_path[PATH_MAX];
|
||||
snprintf(autoconfcmd_path, sizeof(autoconfcmd_path), "%s%s",
|
||||
conf_get_autobase_name(), "auto.conf.cmd");
|
||||
conf_write_dep(autoconfcmd_path);
|
||||
ret = conf_write_autoconf_cmd(autoconf_name);
|
||||
if (ret)
|
||||
return -1;
|
||||
|
||||
if (conf_touch_deps())
|
||||
return 1;
|
||||
|
||||
if (make_parent_dir(autoconf_name))
|
||||
return 1;
|
||||
char filename[PATH_MAX];
|
||||
int fd = conf_mktemp(autoconf_name, filename);
|
||||
if (fd == -1)
|
||||
return 1;
|
||||
out = fdopen(fd, "w");
|
||||
if (!out)
|
||||
return 1;
|
||||
|
||||
name = getenv("KCONFIG_AUTOHEADER");
|
||||
if (!name)
|
||||
name = "include/generated/autoconf.h";
|
||||
if (make_parent_dir(name))
|
||||
return 1;
|
||||
char filename_h[PATH_MAX];
|
||||
int fd_h = conf_mktemp(name, filename_h);
|
||||
if (fd_h == -1)
|
||||
return 1;
|
||||
out_h = fdopen(fd_h, "w");
|
||||
if (!out_h) {
|
||||
fclose(out);
|
||||
return 1;
|
||||
}
|
||||
|
||||
conf_write_heading(out, &kconfig_printer_cb, NULL);
|
||||
conf_write_heading(out_h, &header_printer_cb, NULL);
|
||||
|
||||
for_all_symbols(i, sym) {
|
||||
for_all_symbols(i, sym)
|
||||
sym_calc_value(sym);
|
||||
if (!(sym->flags & SYMBOL_WRITE) && !print_negatives)
|
||||
continue;
|
||||
if (!sym->name)
|
||||
continue;
|
||||
|
||||
/* write symbols to auto.conf and autoconf.h */
|
||||
conf_write_symbol(out, sym, &kconfig_printer_cb, print_negatives?NULL:(void *)1);
|
||||
conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
|
||||
}
|
||||
fclose(out);
|
||||
fclose(out_h);
|
||||
|
||||
if (rename(filename_h, name))
|
||||
return 1;
|
||||
ret = __conf_write_autoconf(conf_get_autoheader_name(),
|
||||
print_symbol_for_c,
|
||||
&comment_style_c);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/*
|
||||
* This must be the last step, kbuild has a dependency on auto.conf
|
||||
* and this marks the successful completion of the previous steps.
|
||||
* Create include/config/auto.conf. This must be the last step because
|
||||
* Kbuild has a dependency on auto.conf and this marks the successful
|
||||
* completion of the previous steps.
|
||||
*/
|
||||
if (rename(filename, autoconf_name))
|
||||
return 1;
|
||||
ret = __conf_write_autoconf(conf_get_autoconfig_name(),
|
||||
print_symbol_for_autoconf,
|
||||
&comment_style_pound);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user