diff options
| -rw-r--r-- | Makefile | 11 | ||||
| -rw-r--r-- | arch/arm/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/Makefile | 4 | ||||
| -rw-r--r-- | arch/xtensa/Makefile | 2 | ||||
| -rw-r--r-- | scripts/basic/Makefile | 6 | ||||
| -rw-r--r-- | scripts/basic/split-include.c | 226 | ||||
| -rw-r--r-- | scripts/kconfig/confdata.c | 121 | ||||
| -rw-r--r-- | scripts/kconfig/expr.h | 3 |
8 files changed, 129 insertions, 246 deletions
@@ -418,7 +418,7 @@ ifeq ($(KBUILD_EXTMOD),) # Carefully list dependencies so we do not try to build scripts twice # in parrallel PHONY += scripts -scripts: scripts_basic include/config/MARKER +scripts: scripts_basic include/config/auto.conf $(Q)$(MAKE) $(build)=$(@) # Objects we will link into vmlinux / subdirs we need to visit @@ -787,7 +787,7 @@ endif prepare2: prepare3 outputmakefile prepare1: prepare2 include/linux/version.h include/asm \ - include/config/MARKER + include/config/auto.conf ifneq ($(KBUILD_MODULES),) $(Q)mkdir -p $(MODVERDIR) $(Q)rm -f $(MODVERDIR)/* @@ -815,13 +815,6 @@ include/asm: $(Q)if [ ! -d include ]; then mkdir -p include; fi; @ln -fsn asm-$(ARCH) $@ -# Split autoconf.h into include/linux/config/* - -include/config/MARKER: scripts/basic/split-include include/config/auto.conf - @echo ' SPLIT include/linux/autoconf.h -> include/config/*' - @scripts/basic/split-include include/linux/autoconf.h include/config - @touch $@ - # Generate some files # --------------------------------------------------------------------------- diff --git a/arch/arm/Makefile b/arch/arm/Makefile index 6f8e84c1c1f2..9791d870ae71 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -175,7 +175,7 @@ boot := arch/arm/boot # them changed. We use .arch to indicate when they were updated # last, otherwise make uses the target directory mtime. -include/asm-arm/.arch: $(wildcard include/config/arch/*.h) include/config/MARKER +include/asm-arm/.arch: $(wildcard include/config/arch/*.h) include/config/auto.conf @echo ' SYMLINK include/asm-arm/arch -> include/asm-arm/$(INCDIR)' ifneq ($(KBUILD_SRC),) $(Q)mkdir -p include/asm-arm diff --git a/arch/sh/Makefile b/arch/sh/Makefile index c72e17a96eed..e467a450662b 100644 --- a/arch/sh/Makefile +++ b/arch/sh/Makefile @@ -147,7 +147,7 @@ endif # them changed. We use .arch and .mach to indicate when they were # updated last, otherwise make uses the target directory mtime. -include/asm-sh/.cpu: $(wildcard include/config/cpu/*.h) include/config/MARKER +include/asm-sh/.cpu: $(wildcard include/config/cpu/*.h) include/config/auto.conf @echo ' SYMLINK include/asm-sh/cpu -> include/asm-sh/$(cpuincdir-y)' $(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi $(Q)ln -fsn $(incdir-prefix)$(cpuincdir-y) include/asm-sh/cpu @@ -157,7 +157,7 @@ include/asm-sh/.cpu: $(wildcard include/config/cpu/*.h) include/config/MARKER # don't, just reference the parent directory so the semantics are # kept roughly the same. -include/asm-sh/.mach: $(wildcard include/config/sh/*.h) include/config/MARKER +include/asm-sh/.mach: $(wildcard include/config/sh/*.h) include/config/auto.conf @echo -n ' SYMLINK include/asm-sh/mach -> ' $(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi $(Q)if [ -d $(incdir-prefix)$(incdir-y) ]; then \ diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile index 98fac8489aed..3a3a4c66ef87 100644 --- a/arch/xtensa/Makefile +++ b/arch/xtensa/Makefile @@ -71,7 +71,7 @@ archprepare: $(archinc)/.platform # Update machine cpu and platform symlinks if something which affects # them changed. -$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/MARKER +$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf @echo ' SYMLINK $(archinc)/xtensa/config -> $(archinc)/xtensa/config-$(CPU)' $(Q)mkdir -p $(archinc) $(Q)mkdir -p $(archinc)/xtensa diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile index f22e94c3a2d1..2f60070f9733 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 459c45276cb1..000000000000 --- 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 ca693fcd023f..e28cd0c2ca08 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 998cf4f656b8..ffd42c7007ee 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 |