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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /scripts/basic
downloadkernel-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'scripts/basic')
-rw-r--r--scripts/basic/Makefile18
-rw-r--r--scripts/basic/docproc.c398
-rw-r--r--scripts/basic/fixdep.c390
-rw-r--r--scripts/basic/split-include.c226
4 files changed, 1032 insertions, 0 deletions
diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile
new file mode 100644
index 000000000000..f22e94c3a2d1
--- /dev/null
+++ b/scripts/basic/Makefile
@@ -0,0 +1,18 @@
+###
+# 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.
+# 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
+always := $(hostprogs-y)
+
+# fixdep is needed to compile other host programs
+$(addprefix $(obj)/,$(filter-out fixdep,$(always))): $(obj)/fixdep
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
new file mode 100644
index 000000000000..8ca7ecdb68fb
--- /dev/null
+++ b/scripts/basic/docproc.c
@@ -0,0 +1,398 @@
+/*
+ * docproc is a simple preprocessor for the template files
+ * used as placeholders for the kernel internal documentation.
+ * docproc is used for documentation-frontend and
+ * dependency-generator.
+ * The two usages have in common that they require
+ * some knowledge of the .tmpl syntax, therefore they
+ * are kept together.
+ *
+ * documentation-frontend
+ * Scans the template file and call kernel-doc for
+ * all occurrences of ![EIF]file
+ * Beforehand each referenced file are scanned for
+ * any exported sympols "EXPORT_SYMBOL()" statements.
+ * This is used to create proper -function and
+ * -nofunction arguments in calls to kernel-doc.
+ * Usage: docproc doc file.tmpl
+ *
+ * dependency-generator:
+ * Scans the template file and list all files
+ * referenced in a format recognized by make.
+ * Usage: docproc depend file.tmpl
+ * Writes dependency information to stdout
+ * in the following format:
+ * file.tmpl src.c src2.c
+ * The filenames are obtained from the following constructs:
+ * !Efilename
+ * !Ifilename
+ * !Dfilename
+ * !Ffilename
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+/* exitstatus is used to keep track of any failing calls to kernel-doc,
+ * but execution continues. */
+int exitstatus = 0;
+
+typedef void DFL(char *);
+DFL *defaultline;
+
+typedef void FILEONLY(char * file);
+FILEONLY *internalfunctions;
+FILEONLY *externalfunctions;
+FILEONLY *symbolsonly;
+
+typedef void FILELINE(char * file, signed char * line);
+FILELINE * singlefunctions;
+FILELINE * entity_system;
+
+#define MAXLINESZ 2048
+#define MAXFILES 250
+#define KERNELDOCPATH "scripts/"
+#define KERNELDOC "kernel-doc"
+#define DOCBOOK "-docbook"
+#define FUNCTION "-function"
+#define NOFUNCTION "-nofunction"
+
+void usage (void)
+{
+ fprintf(stderr, "Usage: docproc {doc|depend} file\n");
+ fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
+ fprintf(stderr, "doc: frontend when generating kernel documentation\n");
+ fprintf(stderr, "depend: generate list of files referenced within file\n");
+}
+
+/*
+ * Execute kernel-doc with parameters givin in svec
+ */
+void exec_kernel_doc(char **svec)
+{
+ pid_t pid;
+ int ret;
+ char real_filename[PATH_MAX + 1];
+ /* Make sure output generated so far are flushed */
+ fflush(stdout);
+ switch(pid=fork()) {
+ case -1:
+ perror("fork");
+ exit(1);
+ case 0:
+ memset(real_filename, 0, sizeof(real_filename));
+ strncat(real_filename, getenv("SRCTREE"), PATH_MAX);
+ strncat(real_filename, KERNELDOCPATH KERNELDOC,
+ PATH_MAX - strlen(real_filename));
+ execvp(real_filename, svec);
+ fprintf(stderr, "exec ");
+ perror(real_filename);
+ exit(1);
+ default:
+ waitpid(pid, &ret ,0);
+ }
+ if (WIFEXITED(ret))
+ exitstatus |= WEXITSTATUS(ret);
+ else
+ exitstatus = 0xff;
+}
+
+/* Types used to create list of all exported symbols in a number of files */
+struct symbols
+{
+ char *name;
+};
+
+struct symfile
+{
+ char *filename;
+ struct symbols *symbollist;
+ int symbolcnt;
+};
+
+struct symfile symfilelist[MAXFILES];
+int symfilecnt = 0;
+
+void add_new_symbol(struct symfile *sym, char * symname)
+{
+ sym->symbollist =
+ realloc(sym->symbollist, (sym->symbolcnt + 1) * sizeof(char *));
+ sym->symbollist[sym->symbolcnt++].name = strdup(symname);
+}
+
+/* Add a filename to the list */
+struct symfile * add_new_file(char * filename)
+{
+ symfilelist[symfilecnt++].filename = strdup(filename);
+ return &symfilelist[symfilecnt - 1];
+}
+/* Check if file already are present in the list */
+struct symfile * filename_exist(char * filename)
+{
+ int i;
+ for (i=0; i < symfilecnt; i++)
+ if (strcmp(symfilelist[i].filename, filename) == 0)
+ return &symfilelist[i];
+ return NULL;
+}
+
+/*
+ * List all files referenced within the template file.
+ * Files are separated by tabs.
+ */
+void adddep(char * file) { printf("\t%s", file); }
+void adddep2(char * file, signed char * line) { line = line; adddep(file); }
+void noaction(char * line) { line = line; }
+void noaction2(char * file, signed char * line) { file = file; line = line; }
+
+/* Echo the line without further action */
+void printline(char * line) { printf("%s", line); }
+
+/*
+ * Find all symbols exported with EXPORT_SYMBOL and EXPORT_SYMBOL_GPL
+ * in filename.
+ * All symbols located are stored in symfilelist.
+ */
+void find_export_symbols(char * filename)
+{
+ FILE * fp;
+ struct symfile *sym;
+ char line[MAXLINESZ];
+ if (filename_exist(filename) == NULL) {
+ char real_filename[PATH_MAX + 1];
+ memset(real_filename, 0, sizeof(real_filename));
+ strncat(real_filename, getenv("SRCTREE"), PATH_MAX);
+ strncat(real_filename, filename,
+ PATH_MAX - strlen(real_filename));
+ sym = add_new_file(filename);
+ fp = fopen(real_filename, "r");
+ if (fp == NULL)
+ {
+ fprintf(stderr, "docproc: ");
+ perror(real_filename);
+ }
+ while(fgets(line, MAXLINESZ, fp)) {
+ signed char *p;
+ signed char *e;
+ if (((p = strstr(line, "EXPORT_SYMBOL_GPL")) != 0) ||
+ ((p = strstr(line, "EXPORT_SYMBOL")) != 0)) {
+ /* Skip EXPORT_SYMBOL{_GPL} */
+ while (isalnum(*p) || *p == '_')
+ p++;
+ /* Remove paranteses and additional ws */
+ while (isspace(*p))
+ p++;
+ if (*p != '(')
+ continue; /* Syntax error? */
+ else
+ p++;
+ while (isspace(*p))
+ p++;
+ e = p;
+ while (isalnum(*e) || *e == '_')
+ e++;
+ *e = '\0';
+ add_new_symbol(sym, p);
+ }
+ }
+ fclose(fp);
+ }
+}
+
+/*
+ * Document all external or internal functions in a file.
+ * Call kernel-doc with following parameters:
+ * kernel-doc -docbook -nofunction function_name1 filename
+ * function names are obtained from all the the src files
+ * by find_export_symbols.
+ * intfunc uses -nofunction
+ * extfunc uses -function
+ */
+void docfunctions(char * filename, char * type)
+{
+ int i,j;
+ int symcnt = 0;
+ int idx = 0;
+ char **vec;
+
+ for (i=0; i <= symfilecnt; i++)
+ symcnt += symfilelist[i].symbolcnt;
+ vec = malloc((2 + 2 * symcnt + 2) * sizeof(char*));
+ if (vec == NULL) {
+ perror("docproc: ");
+ exit(1);
+ }
+ vec[idx++] = KERNELDOC;
+ vec[idx++] = DOCBOOK;
+ for (i=0; i < symfilecnt; i++) {
+ struct symfile * sym = &symfilelist[i];
+ for (j=0; j < sym->symbolcnt; j++) {
+ vec[idx++] = type;
+ vec[idx++] = sym->symbollist[j].name;
+ }
+ }
+ vec[idx++] = filename;
+ vec[idx] = NULL;
+ printf("<!-- %s -->\n", filename);
+ exec_kernel_doc(vec);
+ fflush(stdout);
+ free(vec);
+}
+void intfunc(char * filename) { docfunctions(filename, NOFUNCTION); }
+void extfunc(char * filename) { docfunctions(filename, FUNCTION); }
+
+/*
+ * Document spåecific function(s) in a file.
+ * Call kernel-doc with the following parameters:
+ * kernel-doc -docbook -function function1 [-function function2]
+ */
+void singfunc(char * filename, signed char * line)
+{
+ char *vec[200]; /* Enough for specific functions */
+ int i, idx = 0;
+ int startofsym = 1;
+ vec[idx++] = KERNELDOC;
+ vec[idx++] = DOCBOOK;
+
+ /* Split line up in individual parameters preceeded by FUNCTION */
+ for (i=0; line[i]; i++) {
+ if (isspace(line[i])) {
+ line[i] = '\0';
+ startofsym = 1;
+ continue;
+ }
+ if (startofsym) {
+ startofsym = 0;
+ vec[idx++] = FUNCTION;
+ vec[idx++] = &line[i];
+ }
+ }
+ vec[idx++] = filename;
+ vec[idx] = NULL;
+ exec_kernel_doc(vec);
+}
+
+/*
+ * Parse file, calling action specific functions for:
+ * 1) Lines containing !E
+ * 2) Lines containing !I
+ * 3) Lines containing !D
+ * 4) Lines containing !F
+ * 5) Default lines - lines not matching the above
+ */
+void parse_file(FILE *infile)
+{
+ char line[MAXLINESZ];
+ signed char * s;
+ while(fgets(line, MAXLINESZ, infile)) {
+ if (line[0] == '!') {
+ s = line + 2;
+ switch (line[1]) {
+ case 'E':
+ while (*s && !isspace(*s)) s++;
+ *s = '\0';
+ externalfunctions(line+2);
+ break;
+ case 'I':
+ while (*s && !isspace(*s)) s++;
+ *s = '\0';
+ internalfunctions(line+2);
+ break;
+ case 'D':
+ while (*s && !isspace(*s)) s++;
+ *s = '\0';
+ symbolsonly(line+2);
+ break;
+ case 'F':
+ /* filename */
+ while (*s && !isspace(*s)) s++;
+ *s++ = '\0';
+ /* function names */
+ while (isspace(*s))
+ s++;
+ singlefunctions(line +2, s);
+ break;
+ default:
+ defaultline(line);
+ }
+ }
+ else {
+ defaultline(line);
+ }
+ }
+ fflush(stdout);
+}
+
+
+int main(int argc, char *argv[])
+{
+ FILE * infile;
+ if (argc != 3) {
+ usage();
+ exit(1);
+ }
+ /* Open file, exit on error */
+ infile = fopen(argv[2], "r");
+ if (infile == NULL) {
+ fprintf(stderr, "docproc: ");
+ perror(argv[2]);
+ exit(2);
+ }
+
+ if (strcmp("doc", argv[1]) == 0)
+ {
+ /* Need to do this in two passes.
+ * First pass is used to collect all symbols exported
+ * in the various files.
+ * Second pass generate the documentation.
+ * This is required because function are declared
+ * and exported in different files :-((
+ */
+ /* Collect symbols */
+ defaultline = noaction;
+ internalfunctions = find_export_symbols;
+ externalfunctions = find_export_symbols;
+ symbolsonly = find_export_symbols;
+ singlefunctions = noaction2;
+ parse_file(infile);
+
+ /* Rewind to start from beginning of file again */
+ fseek(infile, 0, SEEK_SET);
+ defaultline = printline;
+ internalfunctions = intfunc;
+ externalfunctions = extfunc;
+ symbolsonly = printline;
+ singlefunctions = singfunc;
+
+ parse_file(infile);
+ }
+ else if (strcmp("depend", argv[1]) == 0)
+ {
+ /* Create first part of dependency chain
+ * file.tmpl */
+ printf("%s\t", argv[2]);
+ defaultline = noaction;
+ internalfunctions = adddep;
+ externalfunctions = adddep;
+ symbolsonly = adddep;
+ singlefunctions = adddep2;
+ parse_file(infile);
+ printf("\n");
+ }
+ else
+ {
+ fprintf(stderr, "Unknown option: %s\n", argv[1]);
+ exit(1);
+ }
+ fclose(infile);
+ fflush(stdout);
+ return exitstatus;
+}
+
diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
new file mode 100644
index 000000000000..7f42c5d8a5a2
--- /dev/null
+++ b/scripts/basic/fixdep.c
@@ -0,0 +1,390 @@
+/*
+ * "Optimize" a list of dependencies as spit out by gcc -MD
+ * for the kernel build
+ * ===========================================================================
+ *
+ * Author Kai Germaschewski
+ * Copyright 2002 by Kai Germaschewski <kai.germaschewski@gmx.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ *
+ * Introduction:
+ *
+ * gcc produces a very nice and correct list of dependencies which
+ * tells make when to remake a file.
+ *
+ * To use this list as-is however has the drawback that virtually
+ * every file in the kernel includes <linux/config.h> which then again
+ * includes <linux/autoconf.h>
+ *
+ * If the user re-runs make *config, linux/autoconf.h will be
+ * regenerated. make notices that and will rebuild every file which
+ * includes autoconf.h, i.e. basically all files. This is extremely
+ * annoying if the user just changed CONFIG_HIS_DRIVER from n to m.
+ *
+ * So we play the same trick that "mkdep" played before. We replace
+ * the dependency on linux/autoconf.h by a dependency on every config
+ * option which is mentioned in any of the listed prequisites.
+ *
+ * To be exact, split-include populates a tree in include/config/,
+ * e.g. include/config/his/driver.h, which contains the #define/#undef
+ * for the CONFIG_HIS_DRIVER option.
+ *
+ * So if the user changes his CONFIG_HIS_DRIVER option, only the objects
+ * which depend on "include/linux/config/his/driver.h" will be rebuilt,
+ * so most likely only his driver ;-)
+ *
+ * The idea above dates, by the way, back to Michael E Chastain, AFAIK.
+ *
+ * So to get dependencies right, there are two issues:
+ * o if any of the files the compiler read changed, we need to rebuild
+ * o if the command line given to the compile the file changed, we
+ * better rebuild as well.
+ *
+ * The former is handled by using the -MD output, the later by saving
+ * the command line used to compile the old object and comparing it
+ * to the one we would now use.
+ *
+ * Again, also this idea is pretty old and has been discussed on
+ * kbuild-devel a long time ago. I don't have a sensibly working
+ * internet connection right now, so I rather don't mention names
+ * without double checking.
+ *
+ * This code here has been based partially based on mkdep.c, which
+ * says the following about its history:
+ *
+ * Copyright abandoned, Michael Chastain, <mailto:mec@shout.net>.
+ * This is a C version of syncdep.pl by Werner Almesberger.
+ *
+ *
+ * It is invoked as
+ *
+ * fixdep <depfile> <target> <cmdline>
+ *
+ * and will read the dependency file <depfile>
+ *
+ * The transformed dependency snipped is written to stdout.
+ *
+ * It first generates a line
+ *
+ * cmd_<target> = <cmdline>
+ *
+ * and then basically copies the .<target>.d file to stdout, in the
+ * process filtering out the dependency on linux/autoconf.h and adding
+ * dependencies on include/config/my/option.h for every
+ * CONFIG_MY_OPTION encountered in any of the prequisites.
+ *
+ * It will also filter out all the dependencies on *.ver. We need
+ * to make sure that the generated version checksum are globally up
+ * to date before even starting the recursive build, so it's too late
+ * at this point anyway.
+ *
+ * The algorithm to grep for "CONFIG_..." is bit unusual, but should
+ * be fast ;-) We don't even try to really parse the header files, but
+ * merely grep, i.e. if CONFIG_FOO is mentioned in a comment, it will
+ * be picked up as well. It's not a problem with respect to
+ * correctness, since that can only give too many dependencies, thus
+ * we cannot miss a rebuild. Since people tend to not mention totally
+ * unrelated CONFIG_ options all over the place, it's not an
+ * efficiency problem either.
+ *
+ * (Note: it'd be easy to port over the complete mkdep state machine,
+ * but I don't think the added complexity is worth it)
+ */
+/*
+ * Note 2: if somebody writes HELLO_CONFIG_BOOM in a file, it will depend onto
+ * CONFIG_BOOM. This could seem a bug (not too hard to fix), but please do not
+ * fix it! Some UserModeLinux files (look at arch/um/) call CONFIG_BOOM as
+ * UML_CONFIG_BOOM, to avoid conflicts with /usr/include/linux/autoconf.h,
+ * through arch/um/include/uml-config.h; this fixdep "bug" makes sure that
+ * those files will have correct dependencies.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <limits.h>
+#include <ctype.h>
+#include <arpa/inet.h>
+
+#define INT_CONF ntohl(0x434f4e46)
+#define INT_ONFI ntohl(0x4f4e4649)
+#define INT_NFIG ntohl(0x4e464947)
+#define INT_FIG_ ntohl(0x4649475f)
+
+char *target;
+char *depfile;
+char *cmdline;
+
+void usage(void)
+
+{
+ fprintf(stderr, "Usage: fixdep <depfile> <target> <cmdline>\n");
+ exit(1);
+}
+
+void print_cmdline(void)
+{
+ printf("cmd_%s := %s\n\n", target, cmdline);
+}
+
+char * str_config = NULL;
+int size_config = 0;
+int len_config = 0;
+
+/*
+ * Grow the configuration string to a desired length.
+ * Usually the first growth is plenty.
+ */
+void grow_config(int len)
+{
+ while (len_config + len > size_config) {
+ if (size_config == 0)
+ size_config = 2048;
+ str_config = realloc(str_config, size_config *= 2);
+ if (str_config == NULL)
+ { perror("fixdep:malloc"); exit(1); }
+ }
+}
+
+
+
+/*
+ * Lookup a value in the configuration string.
+ */
+int is_defined_config(const char * name, int len)
+{
+ const char * pconfig;
+ const char * plast = str_config + len_config - len;
+ for ( pconfig = str_config + 1; pconfig < plast; pconfig++ ) {
+ if (pconfig[ -1] == '\n'
+ && pconfig[len] == '\n'
+ && !memcmp(pconfig, name, len))
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * Add a new value to the configuration string.
+ */
+void define_config(const char * name, int len)
+{
+ grow_config(len + 1);
+
+ memcpy(str_config+len_config, name, len);
+ len_config += len;
+ str_config[len_config++] = '\n';
+}
+
+/*
+ * Clear the set of configuration strings.
+ */
+void clear_config(void)
+{
+ len_config = 0;
+ define_config("", 0);
+}
+
+/*
+ * Record the use of a CONFIG_* word.
+ */
+void use_config(char *m, int slen)
+{
+ char s[PATH_MAX];
+ char *p;
+
+ if (is_defined_config(m, slen))
+ return;
+
+ define_config(m, slen);
+
+ memcpy(s, m, slen); s[slen] = 0;
+
+ for (p = s; p < s + slen; p++) {
+ if (*p == '_')
+ *p = '/';
+ else
+ *p = tolower((unsigned char)*p);
+ }
+ printf(" $(wildcard include/config/%s.h) \\\n", s);
+}
+
+void parse_config_file(signed char *map, size_t len)
+{
+ int *end = (int *) (map + len);
+ /* start at +1, so that p can never be < map */
+ int *m = (int *) map + 1;
+ signed char *p, *q;
+
+ for (; m < end; m++) {
+ if (*m == INT_CONF) { p = (signed char *) m ; goto conf; }
+ if (*m == INT_ONFI) { p = (signed char *) m-1; goto conf; }
+ if (*m == INT_NFIG) { p = (signed char *) m-2; goto conf; }
+ if (*m == INT_FIG_) { p = (signed char *) m-3; goto conf; }
+ continue;
+ conf:
+ if (p > map + len - 7)
+ continue;
+ if (memcmp(p, "CONFIG_", 7))
+ continue;
+ for (q = p + 7; q < map + len; q++) {
+ if (!(isalnum(*q) || *q == '_'))
+ goto found;
+ }
+ continue;
+
+ found:
+ use_config(p+7, q-p-7);
+ }
+}
+
+/* test is s ends in sub */
+int strrcmp(char *s, char *sub)
+{
+ int slen = strlen(s);
+ int sublen = strlen(sub);
+
+ if (sublen > slen)
+ return 1;
+
+ return memcmp(s + slen - sublen, sub, sublen);
+}
+
+void do_config_file(char *filename)
+{
+ struct stat st;
+ int fd;
+ void *map;
+
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "fixdep: ");
+ perror(filename);
+ exit(2);
+ }
+ fstat(fd, &st);
+ if (st.st_size == 0) {
+ close(fd);
+ return;
+ }
+ map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ if ((long) map == -1) {
+ perror("fixdep: mmap");
+ close(fd);
+ return;
+ }
+
+ parse_config_file(map, st.st_size);
+
+ munmap(map, st.st_size);
+
+ close(fd);
+}
+
+void parse_dep_file(void *map, size_t len)
+{
+ signed char *m = map;
+ signed char *end = m + len;
+ signed char *p;
+ char s[PATH_MAX];
+
+ p = strchr(m, ':');
+ if (!p) {
+ fprintf(stderr, "fixdep: parse error\n");
+ exit(1);
+ }
+ memcpy(s, m, p-m); s[p-m] = 0;
+ printf("deps_%s := \\\n", target);
+ m = p+1;
+
+ clear_config();
+
+ while (m < end) {
+ while (m < end && (*m == ' ' || *m == '\\' || *m == '\n'))
+ m++;
+ p = m;
+ while (p < end && *p != ' ') p++;
+ if (p == end) {
+ do p--; while (!isalnum(*p));
+ p++;
+ }
+ memcpy(s, m, p-m); s[p-m] = 0;
+ if (strrcmp(s, "include/linux/autoconf.h") &&
+ strrcmp(s, "arch/um/include/uml-config.h") &&
+ strrcmp(s, ".ver")) {
+ printf(" %s \\\n", s);
+ do_config_file(s);
+ }
+ m = p + 1;
+ }
+ printf("\n%s: $(deps_%s)\n\n", target, target);
+ printf("$(deps_%s):\n", target);
+}
+
+void print_deps(void)
+{
+ struct stat st;
+ int fd;
+ void *map;
+
+ fd = open(depfile, O_RDONLY);
+ if (fd < 0) {
+ fprintf(stderr, "fixdep: ");
+ perror(depfile);
+ exit(2);
+ }
+ fstat(fd, &st);
+ if (st.st_size == 0) {
+ fprintf(stderr,"fixdep: %s is empty\n",depfile);
+ close(fd);
+ return;
+ }
+ map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ if ((long) map == -1) {
+ perror("fixdep: mmap");
+ close(fd);
+ return;
+ }
+
+ parse_dep_file(map, st.st_size);
+
+ munmap(map, st.st_size);
+
+ close(fd);
+}
+
+void traps(void)
+{
+ static char test[] __attribute__((aligned(sizeof(int)))) = "CONF";
+
+ if (*(int *)test != INT_CONF) {
+ fprintf(stderr, "fixdep: sizeof(int) != 4 or wrong endianess? %#x\n",
+ *(int *)test);
+ exit(2);
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ traps();
+
+ if (argc != 4)
+ usage();
+
+ depfile = argv[1];
+ target = argv[2];
+ cmdline = argv[3];
+
+ print_cmdline();
+ print_deps();
+
+ return 0;
+}
diff --git a/scripts/basic/split-include.c b/scripts/basic/split-include.c
new file mode 100644
index 000000000000..60fc4d8ebaa9
--- /dev/null
+++ b/scripts/basic/split-include.c
@@ -0,0 +1,226 @@
+/*
+ * 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 signed 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;
+}