summaryrefslogtreecommitdiffstats
path: root/scripts
diff options
context:
space:
mode:
Diffstat (limited to 'scripts')
-rw-r--r--scripts/basic/Makefile6
-rw-r--r--scripts/basic/split-include.c226
-rw-r--r--scripts/kconfig/confdata.c121
-rw-r--r--scripts/kconfig/expr.h3
4 files changed, 123 insertions, 233 deletions
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
index f22e94c3a2d..2f60070f973 100644
--- a/scripts/basic/Makefile
+++ b/scripts/basic/Makefile
@@ -1,17 +1,15 @@
###
# Makefile.basic list the most basic programs used during the build process.
# The programs listed herein is what is needed to do the basic stuff,
-# such as splitting .config and fix dependency file.
+# such as fix dependency file.
# This initial step is needed to avoid files to be recompiled
# when kernel configuration changes (which is what happens when
# .config is included by main Makefile.
# ---------------------------------------------------------------------------
# fixdep: Used to generate dependency information during build process
-# split-include: Divide all config symbols up in a number of files in
-# include/config/...
# docproc: Used in Documentation/docbook
-hostprogs-y := fixdep split-include docproc
+hostprogs-y := fixdep docproc
always := $(hostprogs-y)
# fixdep is needed to compile other host programs
diff --git a/scripts/basic/split-include.c b/scripts/basic/split-include.c
deleted file mode 100644
index 459c45276cb..00000000000
--- a/scripts/basic/split-include.c
+++ /dev/null
@@ -1,226 +0,0 @@
-/*
- * split-include.c
- *
- * Copyright abandoned, Michael Chastain, <mailto:mec@shout.net>.
- * This is a C version of syncdep.pl by Werner Almesberger.
- *
- * This program takes autoconf.h as input and outputs a directory full
- * of one-line include files, merging onto the old values.
- *
- * Think of the configuration options as key-value pairs. Then there
- * are five cases:
- *
- * key old value new value action
- *
- * KEY-1 VALUE-1 VALUE-1 leave file alone
- * KEY-2 VALUE-2A VALUE-2B write VALUE-2B into file
- * KEY-3 - VALUE-3 write VALUE-3 into file
- * KEY-4 VALUE-4 - write an empty file
- * KEY-5 (empty) - leave old empty file alone
- */
-
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#define ERROR_EXIT(strExit) \
- { \
- const int errnoSave = errno; \
- fprintf(stderr, "%s: ", str_my_name); \
- errno = errnoSave; \
- perror((strExit)); \
- exit(1); \
- }
-
-
-
-int main(int argc, const char * argv [])
-{
- const char * str_my_name;
- const char * str_file_autoconf;
- const char * str_dir_config;
-
- FILE * fp_config;
- FILE * fp_target;
- FILE * fp_find;
-
- int buffer_size;
-
- char * line;
- char * old_line;
- char * list_target;
- char * ptarget;
-
- struct stat stat_buf;
-
- /* Check arg count. */
- if (argc != 3)
- {
- fprintf(stderr, "%s: wrong number of arguments.\n", argv[0]);
- exit(1);
- }
-
- str_my_name = argv[0];
- str_file_autoconf = argv[1];
- str_dir_config = argv[2];
-
- /* Find a buffer size. */
- if (stat(str_file_autoconf, &stat_buf) != 0)
- ERROR_EXIT(str_file_autoconf);
- buffer_size = 2 * stat_buf.st_size + 4096;
-
- /* Allocate buffers. */
- if ( (line = malloc(buffer_size)) == NULL
- || (old_line = malloc(buffer_size)) == NULL
- || (list_target = malloc(buffer_size)) == NULL )
- ERROR_EXIT(str_file_autoconf);
-
- /* Open autoconfig file. */
- if ((fp_config = fopen(str_file_autoconf, "r")) == NULL)
- ERROR_EXIT(str_file_autoconf);
-
- /* Make output directory if needed. */
- if (stat(str_dir_config, &stat_buf) != 0)
- {
- if (mkdir(str_dir_config, 0755) != 0)
- ERROR_EXIT(str_dir_config);
- }
-
- /* Change to output directory. */
- if (chdir(str_dir_config) != 0)
- ERROR_EXIT(str_dir_config);
-
- /* Put initial separator into target list. */
- ptarget = list_target;
- *ptarget++ = '\n';
-
- /* Read config lines. */
- while (fgets(line, buffer_size, fp_config))
- {
- const char * str_config;
- int is_same;
- int itarget;
-
- if (line[0] != '#')
- continue;
- if ((str_config = strstr(line, "CONFIG_")) == NULL)
- continue;
-
- /* Make the output file name. */
- str_config += sizeof("CONFIG_") - 1;
- for (itarget = 0; !isspace(str_config[itarget]); itarget++)
- {
- int c = (unsigned char) str_config[itarget];
- if (isupper(c)) c = tolower(c);
- if (c == '_') c = '/';
- ptarget[itarget] = c;
- }
- ptarget[itarget++] = '.';
- ptarget[itarget++] = 'h';
- ptarget[itarget++] = '\0';
-
- /* Check for existing file. */
- is_same = 0;
- if ((fp_target = fopen(ptarget, "r")) != NULL)
- {
- fgets(old_line, buffer_size, fp_target);
- if (fclose(fp_target) != 0)
- ERROR_EXIT(ptarget);
- if (!strcmp(line, old_line))
- is_same = 1;
- }
-
- if (!is_same)
- {
- /* Auto-create directories. */
- int islash;
- for (islash = 0; islash < itarget; islash++)
- {
- if (ptarget[islash] == '/')
- {
- ptarget[islash] = '\0';
- if (stat(ptarget, &stat_buf) != 0
- && mkdir(ptarget, 0755) != 0)
- ERROR_EXIT( ptarget );
- ptarget[islash] = '/';
- }
- }
-
- /* Write the file. */
- if ((fp_target = fopen(ptarget, "w" )) == NULL)
- ERROR_EXIT(ptarget);
- fputs(line, fp_target);
- if (ferror(fp_target) || fclose(fp_target) != 0)
- ERROR_EXIT(ptarget);
- }
-
- /* Update target list */
- ptarget += itarget;
- *(ptarget-1) = '\n';
- }
-
- /*
- * Close autoconfig file.
- * Terminate the target list.
- */
- if (fclose(fp_config) != 0)
- ERROR_EXIT(str_file_autoconf);
- *ptarget = '\0';
-
- /*
- * Fix up existing files which have no new value.
- * This is Case 4 and Case 5.
- *
- * I re-read the tree and filter it against list_target.
- * This is crude. But it avoids data copies. Also, list_target
- * is compact and contiguous, so it easily fits into cache.
- *
- * Notice that list_target contains strings separated by \n,
- * with a \n before the first string and after the last.
- * fgets gives the incoming names a terminating \n.
- * So by having an initial \n, strstr will find exact matches.
- */
-
- fp_find = popen("find * -type f -name \"*.h\" -print", "r");
- if (fp_find == 0)
- ERROR_EXIT( "find" );
-
- line[0] = '\n';
- while (fgets(line+1, buffer_size, fp_find))
- {
- if (strstr(list_target, line) == NULL)
- {
- /*
- * This is an old file with no CONFIG_* flag in autoconf.h.
- */
-
- /* First strip the \n. */
- line[strlen(line)-1] = '\0';
-
- /* Grab size. */
- if (stat(line+1, &stat_buf) != 0)
- ERROR_EXIT(line);
-
- /* If file is not empty, make it empty and give it a fresh date. */
- if (stat_buf.st_size != 0)
- {
- if ((fp_target = fopen(line+1, "w")) == NULL)
- ERROR_EXIT(line);
- if (fclose(fp_target) != 0)
- ERROR_EXIT(line);
- }
- }
- }
-
- if (pclose(fp_find) != 0)
- ERROR_EXIT("find");
-
- return 0;
-}
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index ca693fcd023..e28cd0c2ca0 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -5,6 +5,7 @@
#include <sys/stat.h>
#include <ctype.h>
+#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -520,6 +521,119 @@ int conf_write(const char *name)
return 0;
}
+int conf_split_config(void)
+{
+ char *name, path[128];
+ char *s, *d, c;
+ struct symbol *sym;
+ struct stat sb;
+ int res, i, fd;
+
+ name = getenv("KCONFIG_AUTOCONFIG");
+ if (!name)
+ name = "include/config/auto.conf";
+ conf_read_simple(name, S_DEF_AUTO);
+
+ if (chdir("include/config"))
+ return 1;
+
+ res = 0;
+ for_all_symbols(i, sym) {
+ sym_calc_value(sym);
+ if ((sym->flags & SYMBOL_AUTO) || !sym->name)
+ continue;
+ if (sym->flags & SYMBOL_WRITE) {
+ if (sym->flags & SYMBOL_DEF_AUTO) {
+ /*
+ * symbol has old and new value,
+ * so compare them...
+ */
+ switch (sym->type) {
+ case S_BOOLEAN:
+ case S_TRISTATE:
+ if (sym_get_tristate_value(sym) ==
+ sym->def[S_DEF_AUTO].tri)
+ continue;
+ break;
+ case S_STRING:
+ case S_HEX:
+ case S_INT:
+ if (!strcmp(sym_get_string_value(sym),
+ sym->def[S_DEF_AUTO].val))
+ continue;
+ break;
+ default:
+ break;
+ }
+ } else {
+ /*
+ * If there is no old value, only 'no' (unset)
+ * is allowed as new value.
+ */
+ switch (sym->type) {
+ case S_BOOLEAN:
+ case S_TRISTATE:
+ if (sym_get_tristate_value(sym) == no)
+ continue;
+ break;
+ default:
+ break;
+ }
+ }
+ } else if (!(sym->flags & SYMBOL_DEF_AUTO))
+ /* There is neither an old nor a new value. */
+ continue;
+ /* else
+ * There is an old value, but no new value ('no' (unset)
+ * isn't saved in auto.conf, so the old value is always
+ * different from 'no').
+ */
+
+ /* Replace all '_' and append ".h" */
+ s = sym->name;
+ d = path;
+ while ((c = *s++)) {
+ c = tolower(c);
+ *d++ = (c == '_') ? '/' : c;
+ }
+ strcpy(d, ".h");
+
+ /* Assume directory path already exists. */
+ fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+ if (fd == -1) {
+ if (errno != ENOENT) {
+ res = 1;
+ break;
+ }
+ /*
+ * Create directory components,
+ * unless they exist already.
+ */
+ d = path;
+ while ((d = strchr(d, '/'))) {
+ *d = 0;
+ if (stat(path, &sb) && mkdir(path, 0755)) {
+ res = 1;
+ goto out;
+ }
+ *d++ = '/';
+ }
+ /* Try it again. */
+ fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
+ if (fd == -1) {
+ res = 1;
+ break;
+ }
+ }
+ close(fd);
+ }
+out:
+ if (chdir("../.."))
+ return 1;
+
+ return res;
+}
+
int conf_write_autoconf(void)
{
struct symbol *sym;
@@ -529,8 +643,13 @@ int conf_write_autoconf(void)
time_t now;
int i, l;
+ sym_clear_all_valid();
+
file_write_dep("include/config/auto.conf.cmd");
+ if (conf_split_config())
+ return 1;
+
out = fopen(".tmpconfig", "w");
if (!out)
return 1;
@@ -558,8 +677,6 @@ int conf_write_autoconf(void)
"#define AUTOCONF_INCLUDED\n",
sym_get_string_value(sym), ctime(&now));
- sym_clear_all_valid();
-
for_all_symbols(i, sym) {
sym_calc_value(sym);
if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 998cf4f656b..ffd42c7007e 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -65,6 +65,7 @@ enum symbol_type {
enum {
S_DEF_USER, /* main user value */
+ S_DEF_AUTO,
};
struct symbol {
@@ -97,7 +98,7 @@ struct symbol {
#define SYMBOL_WARNED 0x8000
#define SYMBOL_DEF 0x10000
#define SYMBOL_DEF_USER 0x10000
-#define SYMBOL_DEF2 0x20000
+#define SYMBOL_DEF_AUTO 0x20000
#define SYMBOL_DEF3 0x40000
#define SYMBOL_DEF4 0x80000
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 20:49:43 +0000