/*
|
/*
|
* Originally by Linus Torvalds.
|
* Originally by Linus Torvalds.
|
* Smart CONFIG_* processing by Werner Almesberger, Michael Chastain.
|
* Smart CONFIG_* processing by Werner Almesberger, Michael Chastain.
|
*
|
*
|
* Usage: mkdep cflags -- file ...
|
* Usage: mkdep cflags -- file ...
|
*
|
*
|
* Read source files and output makefile dependency lines for them.
|
* Read source files and output makefile dependency lines for them.
|
* I make simple dependency lines for #include <*.h> and #include "*.h".
|
* I make simple dependency lines for #include <*.h> and #include "*.h".
|
* I also find instances of CONFIG_FOO and generate dependencies
|
* I also find instances of CONFIG_FOO and generate dependencies
|
* like include/config/foo.h.
|
* like include/config/foo.h.
|
*
|
*
|
* 1 August 1999, Michael Elizabeth Chastain, <mec@shout.net>
|
* 1 August 1999, Michael Elizabeth Chastain, <mec@shout.net>
|
* - Keith Owens reported a bug in smart config processing. There used
|
* - Keith Owens reported a bug in smart config processing. There used
|
* to be an optimization for "#define CONFIG_FOO ... #ifdef CONFIG_FOO",
|
* to be an optimization for "#define CONFIG_FOO ... #ifdef CONFIG_FOO",
|
* so that the file would not depend on CONFIG_FOO because the file defines
|
* so that the file would not depend on CONFIG_FOO because the file defines
|
* this symbol itself. But this optimization is bogus! Consider this code:
|
* this symbol itself. But this optimization is bogus! Consider this code:
|
* "#if 0 \n #define CONFIG_FOO \n #endif ... #ifdef CONFIG_FOO". Here
|
* "#if 0 \n #define CONFIG_FOO \n #endif ... #ifdef CONFIG_FOO". Here
|
* the definition is inactivated, but I still used it. It turns out this
|
* the definition is inactivated, but I still used it. It turns out this
|
* actually happens a few times in the kernel source. The simple way to
|
* actually happens a few times in the kernel source. The simple way to
|
* fix this problem is to remove this particular optimization.
|
* fix this problem is to remove this particular optimization.
|
*
|
*
|
* 2.3.99-pre1, Andrew Morton <andrewm@uow.edu.au>
|
* 2.3.99-pre1, Andrew Morton <andrewm@uow.edu.au>
|
* - Changed so that 'filename.o' depends upon 'filename.[cS]'. This is so that
|
* - Changed so that 'filename.o' depends upon 'filename.[cS]'. This is so that
|
* missing source files are noticed, rather than silently ignored.
|
* missing source files are noticed, rather than silently ignored.
|
*
|
*
|
* 2.4.2-pre3, Keith Owens <kaos@ocs.com.au>
|
* 2.4.2-pre3, Keith Owens <kaos@ocs.com.au>
|
* - Accept cflags followed by '--' followed by filenames. mkdep extracts -I
|
* - Accept cflags followed by '--' followed by filenames. mkdep extracts -I
|
* options from cflags and looks in the specified directories as well as the
|
* options from cflags and looks in the specified directories as well as the
|
* defaults. Only -I is supported, no attempt is made to handle -idirafter,
|
* defaults. Only -I is supported, no attempt is made to handle -idirafter,
|
* -isystem, -I- etc.
|
* -isystem, -I- etc.
|
*/
|
*/
|
|
|
#include <ctype.h>
|
#include <ctype.h>
|
#include <fcntl.h>
|
#include <fcntl.h>
|
#include <limits.h>
|
#include <limits.h>
|
#include <stdio.h>
|
#include <stdio.h>
|
#include <stdlib.h>
|
#include <stdlib.h>
|
#include <string.h>
|
#include <string.h>
|
#include <unistd.h>
|
#include <unistd.h>
|
|
|
#include <sys/fcntl.h>
|
#include <sys/fcntl.h>
|
#include <sys/mman.h>
|
#include <sys/mman.h>
|
#include <sys/stat.h>
|
#include <sys/stat.h>
|
#include <sys/types.h>
|
#include <sys/types.h>
|
|
|
|
|
|
|
char __depname[512] = "\n\t@touch ";
|
char __depname[512] = "\n\t@touch ";
|
#define depname (__depname+9)
|
#define depname (__depname+9)
|
int hasdep;
|
int hasdep;
|
|
|
struct path_struct {
|
struct path_struct {
|
int len;
|
int len;
|
char *buffer;
|
char *buffer;
|
};
|
};
|
struct path_struct *path_array;
|
struct path_struct *path_array;
|
int paths;
|
int paths;
|
|
|
|
|
/* Current input file */
|
/* Current input file */
|
static const char *g_filename;
|
static const char *g_filename;
|
|
|
/*
|
/*
|
* This records all the configuration options seen.
|
* This records all the configuration options seen.
|
* In perl this would be a hash, but here it's a long string
|
* In perl this would be a hash, but here it's a long string
|
* of values separated by newlines. This is simple and
|
* of values separated by newlines. This is simple and
|
* extremely fast.
|
* extremely fast.
|
*/
|
*/
|
char * str_config = NULL;
|
char * str_config = NULL;
|
int size_config = 0;
|
int size_config = 0;
|
int len_config = 0;
|
int len_config = 0;
|
|
|
static void
|
static void
|
do_depname(void)
|
do_depname(void)
|
{
|
{
|
if (!hasdep) {
|
if (!hasdep) {
|
hasdep = 1;
|
hasdep = 1;
|
printf("%s:", depname);
|
printf("%s:", depname);
|
if (g_filename)
|
if (g_filename)
|
printf(" %s", g_filename);
|
printf(" %s", g_filename);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* Grow the configuration string to a desired length.
|
* Grow the configuration string to a desired length.
|
* Usually the first growth is plenty.
|
* Usually the first growth is plenty.
|
*/
|
*/
|
void grow_config(int len)
|
void grow_config(int len)
|
{
|
{
|
while (len_config + len > size_config) {
|
while (len_config + len > size_config) {
|
if (size_config == 0)
|
if (size_config == 0)
|
size_config = 2048;
|
size_config = 2048;
|
str_config = realloc(str_config, size_config *= 2);
|
str_config = realloc(str_config, size_config *= 2);
|
if (str_config == NULL)
|
if (str_config == NULL)
|
{ perror("malloc config"); exit(1); }
|
{ perror("malloc config"); exit(1); }
|
}
|
}
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Lookup a value in the configuration string.
|
* Lookup a value in the configuration string.
|
*/
|
*/
|
int is_defined_config(const char * name, int len)
|
int is_defined_config(const char * name, int len)
|
{
|
{
|
const char * pconfig;
|
const char * pconfig;
|
const char * plast = str_config + len_config - len;
|
const char * plast = str_config + len_config - len;
|
for ( pconfig = str_config + 1; pconfig < plast; pconfig++ ) {
|
for ( pconfig = str_config + 1; pconfig < plast; pconfig++ ) {
|
if (pconfig[ -1] == '\n'
|
if (pconfig[ -1] == '\n'
|
&& pconfig[len] == '\n'
|
&& pconfig[len] == '\n'
|
&& !memcmp(pconfig, name, len))
|
&& !memcmp(pconfig, name, len))
|
return 1;
|
return 1;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Add a new value to the configuration string.
|
* Add a new value to the configuration string.
|
*/
|
*/
|
void define_config(const char * name, int len)
|
void define_config(const char * name, int len)
|
{
|
{
|
grow_config(len + 1);
|
grow_config(len + 1);
|
|
|
memcpy(str_config+len_config, name, len);
|
memcpy(str_config+len_config, name, len);
|
len_config += len;
|
len_config += len;
|
str_config[len_config++] = '\n';
|
str_config[len_config++] = '\n';
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Clear the set of configuration strings.
|
* Clear the set of configuration strings.
|
*/
|
*/
|
void clear_config(void)
|
void clear_config(void)
|
{
|
{
|
len_config = 0;
|
len_config = 0;
|
define_config("", 0);
|
define_config("", 0);
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* This records all the precious .h filenames. No need for a hash,
|
* This records all the precious .h filenames. No need for a hash,
|
* it's a long string of values enclosed in tab and newline.
|
* it's a long string of values enclosed in tab and newline.
|
*/
|
*/
|
char * str_precious = NULL;
|
char * str_precious = NULL;
|
int size_precious = 0;
|
int size_precious = 0;
|
int len_precious = 0;
|
int len_precious = 0;
|
|
|
|
|
|
|
/*
|
/*
|
* Grow the precious string to a desired length.
|
* Grow the precious string to a desired length.
|
* Usually the first growth is plenty.
|
* Usually the first growth is plenty.
|
*/
|
*/
|
void grow_precious(int len)
|
void grow_precious(int len)
|
{
|
{
|
while (len_precious + len > size_precious) {
|
while (len_precious + len > size_precious) {
|
if (size_precious == 0)
|
if (size_precious == 0)
|
size_precious = 2048;
|
size_precious = 2048;
|
str_precious = realloc(str_precious, size_precious *= 2);
|
str_precious = realloc(str_precious, size_precious *= 2);
|
if (str_precious == NULL)
|
if (str_precious == NULL)
|
{ perror("malloc"); exit(1); }
|
{ perror("malloc"); exit(1); }
|
}
|
}
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Add a new value to the precious string.
|
* Add a new value to the precious string.
|
*/
|
*/
|
void define_precious(const char * filename)
|
void define_precious(const char * filename)
|
{
|
{
|
int len = strlen(filename);
|
int len = strlen(filename);
|
grow_precious(len + 4);
|
grow_precious(len + 4);
|
*(str_precious+len_precious++) = '\t';
|
*(str_precious+len_precious++) = '\t';
|
memcpy(str_precious+len_precious, filename, len);
|
memcpy(str_precious+len_precious, filename, len);
|
len_precious += len;
|
len_precious += len;
|
memcpy(str_precious+len_precious, " \\\n", 3);
|
memcpy(str_precious+len_precious, " \\\n", 3);
|
len_precious += 3;
|
len_precious += 3;
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Handle an #include line.
|
* Handle an #include line.
|
*/
|
*/
|
void handle_include(int start, const char * name, int len)
|
void handle_include(int start, const char * name, int len)
|
{
|
{
|
struct path_struct *path;
|
struct path_struct *path;
|
int i;
|
int i;
|
|
|
if (len == 14 && !memcmp(name, "linux/config.h", len))
|
if (len == 14 && !memcmp(name, "linux/config.h", len))
|
return;
|
return;
|
|
|
if (len >= 7 && !memcmp(name, "config/", 7))
|
if (len >= 7 && !memcmp(name, "config/", 7))
|
define_config(name+7, len-7-2);
|
define_config(name+7, len-7-2);
|
|
|
for (i = start, path = path_array+start; i < paths; ++i, ++path) {
|
for (i = start, path = path_array+start; i < paths; ++i, ++path) {
|
memcpy(path->buffer+path->len, name, len);
|
memcpy(path->buffer+path->len, name, len);
|
path->buffer[path->len+len] = '\0';
|
path->buffer[path->len+len] = '\0';
|
if (access(path->buffer, F_OK) == 0) {
|
if (access(path->buffer, F_OK) == 0) {
|
do_depname();
|
do_depname();
|
printf(" \\\n %s", path->buffer);
|
printf(" \\\n %s", path->buffer);
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Add a path to the list of include paths.
|
* Add a path to the list of include paths.
|
*/
|
*/
|
void add_path(const char * name)
|
void add_path(const char * name)
|
{
|
{
|
struct path_struct *path;
|
struct path_struct *path;
|
char resolved_path[PATH_MAX+1];
|
char resolved_path[PATH_MAX+1];
|
const char *name2;
|
const char *name2;
|
|
|
if (strcmp(name, ".")) {
|
if (strcmp(name, ".")) {
|
name2 = realpath(name, resolved_path);
|
name2 = realpath(name, resolved_path);
|
if (!name2) {
|
if (!name2) {
|
fprintf(stderr, "realpath(%s) failed, %m\n", name);
|
fprintf(stderr, "realpath(%s) failed, %m\n", name);
|
exit(1);
|
exit(1);
|
}
|
}
|
}
|
}
|
else {
|
else {
|
name2 = "";
|
name2 = "";
|
}
|
}
|
|
|
path_array = realloc(path_array, (++paths)*sizeof(*path_array));
|
path_array = realloc(path_array, (++paths)*sizeof(*path_array));
|
if (!path_array) {
|
if (!path_array) {
|
fprintf(stderr, "cannot expand path_arry\n");
|
fprintf(stderr, "cannot expand path_arry\n");
|
exit(1);
|
exit(1);
|
}
|
}
|
|
|
path = path_array+paths-1;
|
path = path_array+paths-1;
|
path->len = strlen(name2);
|
path->len = strlen(name2);
|
path->buffer = malloc(path->len+1+256+1);
|
path->buffer = malloc(path->len+1+256+1);
|
if (!path->buffer) {
|
if (!path->buffer) {
|
fprintf(stderr, "cannot allocate path buffer\n");
|
fprintf(stderr, "cannot allocate path buffer\n");
|
exit(1);
|
exit(1);
|
}
|
}
|
strcpy(path->buffer, name2);
|
strcpy(path->buffer, name2);
|
if (path->len && *(path->buffer+path->len-1) != '/') {
|
if (path->len && *(path->buffer+path->len-1) != '/') {
|
*(path->buffer+path->len) = '/';
|
*(path->buffer+path->len) = '/';
|
*(path->buffer+(++(path->len))) = '\0';
|
*(path->buffer+(++(path->len))) = '\0';
|
}
|
}
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Record the use of a CONFIG_* word.
|
* Record the use of a CONFIG_* word.
|
*/
|
*/
|
void use_config(const char * name, int len)
|
void use_config(const char * name, int len)
|
{
|
{
|
char *pc;
|
char *pc;
|
int i;
|
int i;
|
|
|
pc = path_array[paths-1].buffer + path_array[paths-1].len;
|
pc = path_array[paths-1].buffer + path_array[paths-1].len;
|
memcpy(pc, "config/", 7);
|
memcpy(pc, "config/", 7);
|
pc += 7;
|
pc += 7;
|
|
|
for (i = 0; i < len; i++) {
|
for (i = 0; i < len; i++) {
|
char c = name[i];
|
char c = name[i];
|
if (isupper((int)c)) c = tolower((int)c);
|
if (isupper((int)c)) c = tolower((int)c);
|
if (c == '_') c = '/';
|
if (c == '_') c = '/';
|
pc[i] = c;
|
pc[i] = c;
|
}
|
}
|
pc[len] = '\0';
|
pc[len] = '\0';
|
|
|
if (is_defined_config(pc, len))
|
if (is_defined_config(pc, len))
|
return;
|
return;
|
|
|
define_config(pc, len);
|
define_config(pc, len);
|
|
|
do_depname();
|
do_depname();
|
printf(" \\\n $(wildcard %s.h)", path_array[paths-1].buffer);
|
printf(" \\\n $(wildcard %s.h)", path_array[paths-1].buffer);
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Macros for stunningly fast map-based character access.
|
* Macros for stunningly fast map-based character access.
|
* __buf is a register which holds the current word of the input.
|
* __buf is a register which holds the current word of the input.
|
* Thus, there is one memory access per sizeof(unsigned long) characters.
|
* Thus, there is one memory access per sizeof(unsigned long) characters.
|
*/
|
*/
|
|
|
#if defined(__alpha__) || defined(__i386__) || defined(__ia64__) || defined(__x86_64__) || defined(__MIPSEL__) \
|
#if defined(__alpha__) || defined(__i386__) || defined(__ia64__) || defined(__x86_64__) || defined(__MIPSEL__) \
|
|| defined(__arm__)
|
|| defined(__arm__)
|
#define LE_MACHINE
|
#define LE_MACHINE
|
#endif
|
#endif
|
|
|
#ifdef LE_MACHINE
|
#ifdef LE_MACHINE
|
#define next_byte(x) (x >>= 8)
|
#define next_byte(x) (x >>= 8)
|
#define current ((unsigned char) __buf)
|
#define current ((unsigned char) __buf)
|
#else
|
#else
|
#define next_byte(x) (x <<= 8)
|
#define next_byte(x) (x <<= 8)
|
#define current (__buf >> 8*(sizeof(unsigned long)-1))
|
#define current (__buf >> 8*(sizeof(unsigned long)-1))
|
#endif
|
#endif
|
|
|
#define GETNEXT { \
|
#define GETNEXT { \
|
next_byte(__buf); \
|
next_byte(__buf); \
|
if ((unsigned long) next % sizeof(unsigned long) == 0) { \
|
if ((unsigned long) next % sizeof(unsigned long) == 0) { \
|
if (next >= end) \
|
if (next >= end) \
|
break; \
|
break; \
|
__buf = * (unsigned long *) next; \
|
__buf = * (unsigned long *) next; \
|
} \
|
} \
|
next++; \
|
next++; \
|
}
|
}
|
|
|
/*
|
/*
|
* State machine macros.
|
* State machine macros.
|
*/
|
*/
|
#define CASE(c,label) if (current == c) goto label
|
#define CASE(c,label) if (current == c) goto label
|
#define NOTCASE(c,label) if (current != c) goto label
|
#define NOTCASE(c,label) if (current != c) goto label
|
|
|
/*
|
/*
|
* Yet another state machine speedup.
|
* Yet another state machine speedup.
|
*/
|
*/
|
#define MAX2(a,b) ((a)>(b)?(a):(b))
|
#define MAX2(a,b) ((a)>(b)?(a):(b))
|
#define MIN2(a,b) ((a)<(b)?(a):(b))
|
#define MIN2(a,b) ((a)<(b)?(a):(b))
|
#define MAX5(a,b,c,d,e) (MAX2(a,MAX2(b,MAX2(c,MAX2(d,e)))))
|
#define MAX5(a,b,c,d,e) (MAX2(a,MAX2(b,MAX2(c,MAX2(d,e)))))
|
#define MIN5(a,b,c,d,e) (MIN2(a,MIN2(b,MIN2(c,MIN2(d,e)))))
|
#define MIN5(a,b,c,d,e) (MIN2(a,MIN2(b,MIN2(c,MIN2(d,e)))))
|
|
|
|
|
|
|
/*
|
/*
|
* The state machine looks for (approximately) these Perl regular expressions:
|
* The state machine looks for (approximately) these Perl regular expressions:
|
*
|
*
|
* m|\/\*.*?\*\/|
|
* m|\/\*.*?\*\/|
|
* m|\/\/.*|
|
* m|\/\/.*|
|
* m|'.*?'|
|
* m|'.*?'|
|
* m|".*?"|
|
* m|".*?"|
|
* m|#\s*include\s*"(.*?)"|
|
* m|#\s*include\s*"(.*?)"|
|
* m|#\s*include\s*<(.*?>"|
|
* m|#\s*include\s*<(.*?>"|
|
* m|#\s*(?define|undef)\s*CONFIG_(\w*)|
|
* m|#\s*(?define|undef)\s*CONFIG_(\w*)|
|
* m|(?!\w)CONFIG_|
|
* m|(?!\w)CONFIG_|
|
*
|
*
|
* About 98% of the CPU time is spent here, and most of that is in
|
* About 98% of the CPU time is spent here, and most of that is in
|
* the 'start' paragraph. Because the current characters are
|
* the 'start' paragraph. Because the current characters are
|
* in a register, the start loop usually eats 4 or 8 characters
|
* in a register, the start loop usually eats 4 or 8 characters
|
* per memory read. The MAX5 and MIN5 tests dispose of most
|
* per memory read. The MAX5 and MIN5 tests dispose of most
|
* input characters with 1 or 2 comparisons.
|
* input characters with 1 or 2 comparisons.
|
*/
|
*/
|
void state_machine(const char * map, const char * end)
|
void state_machine(const char * map, const char * end)
|
{
|
{
|
const char * next = map;
|
const char * next = map;
|
const char * map_dot;
|
const char * map_dot;
|
unsigned long __buf = 0;
|
unsigned long __buf = 0;
|
|
|
for (;;) {
|
for (;;) {
|
start:
|
start:
|
GETNEXT
|
GETNEXT
|
__start:
|
__start:
|
if (current > MAX5('/','\'','"','#','C')) goto start;
|
if (current > MAX5('/','\'','"','#','C')) goto start;
|
if (current < MIN5('/','\'','"','#','C')) goto start;
|
if (current < MIN5('/','\'','"','#','C')) goto start;
|
CASE('/', slash);
|
CASE('/', slash);
|
CASE('\'', squote);
|
CASE('\'', squote);
|
CASE('"', dquote);
|
CASE('"', dquote);
|
CASE('#', pound);
|
CASE('#', pound);
|
CASE('C', cee);
|
CASE('C', cee);
|
goto start;
|
goto start;
|
|
|
/* // */
|
/* // */
|
slash_slash:
|
slash_slash:
|
GETNEXT
|
GETNEXT
|
CASE('\n', start);
|
CASE('\n', start);
|
NOTCASE('\\', slash_slash);
|
NOTCASE('\\', slash_slash);
|
GETNEXT
|
GETNEXT
|
goto slash_slash;
|
goto slash_slash;
|
|
|
/* / */
|
/* / */
|
slash:
|
slash:
|
GETNEXT
|
GETNEXT
|
CASE('/', slash_slash);
|
CASE('/', slash_slash);
|
NOTCASE('*', __start);
|
NOTCASE('*', __start);
|
slash_star_dot_star:
|
slash_star_dot_star:
|
GETNEXT
|
GETNEXT
|
__slash_star_dot_star:
|
__slash_star_dot_star:
|
NOTCASE('*', slash_star_dot_star);
|
NOTCASE('*', slash_star_dot_star);
|
GETNEXT
|
GETNEXT
|
NOTCASE('/', __slash_star_dot_star);
|
NOTCASE('/', __slash_star_dot_star);
|
goto start;
|
goto start;
|
|
|
/* '.*?' */
|
/* '.*?' */
|
squote:
|
squote:
|
GETNEXT
|
GETNEXT
|
CASE('\'', start);
|
CASE('\'', start);
|
NOTCASE('\\', squote);
|
NOTCASE('\\', squote);
|
GETNEXT
|
GETNEXT
|
goto squote;
|
goto squote;
|
|
|
/* ".*?" */
|
/* ".*?" */
|
dquote:
|
dquote:
|
GETNEXT
|
GETNEXT
|
CASE('"', start);
|
CASE('"', start);
|
NOTCASE('\\', dquote);
|
NOTCASE('\\', dquote);
|
GETNEXT
|
GETNEXT
|
goto dquote;
|
goto dquote;
|
|
|
/* #\s* */
|
/* #\s* */
|
pound:
|
pound:
|
GETNEXT
|
GETNEXT
|
CASE(' ', pound);
|
CASE(' ', pound);
|
CASE('\t', pound);
|
CASE('\t', pound);
|
CASE('i', pound_i);
|
CASE('i', pound_i);
|
CASE('d', pound_d);
|
CASE('d', pound_d);
|
CASE('u', pound_u);
|
CASE('u', pound_u);
|
goto __start;
|
goto __start;
|
|
|
/* #\s*i */
|
/* #\s*i */
|
pound_i:
|
pound_i:
|
GETNEXT NOTCASE('n', __start);
|
GETNEXT NOTCASE('n', __start);
|
GETNEXT NOTCASE('c', __start);
|
GETNEXT NOTCASE('c', __start);
|
GETNEXT NOTCASE('l', __start);
|
GETNEXT NOTCASE('l', __start);
|
GETNEXT NOTCASE('u', __start);
|
GETNEXT NOTCASE('u', __start);
|
GETNEXT NOTCASE('d', __start);
|
GETNEXT NOTCASE('d', __start);
|
GETNEXT NOTCASE('e', __start);
|
GETNEXT NOTCASE('e', __start);
|
goto pound_include;
|
goto pound_include;
|
|
|
/* #\s*include\s* */
|
/* #\s*include\s* */
|
pound_include:
|
pound_include:
|
GETNEXT
|
GETNEXT
|
CASE(' ', pound_include);
|
CASE(' ', pound_include);
|
CASE('\t', pound_include);
|
CASE('\t', pound_include);
|
map_dot = next;
|
map_dot = next;
|
CASE('"', pound_include_dquote);
|
CASE('"', pound_include_dquote);
|
CASE('<', pound_include_langle);
|
CASE('<', pound_include_langle);
|
goto __start;
|
goto __start;
|
|
|
/* #\s*include\s*"(.*)" */
|
/* #\s*include\s*"(.*)" */
|
pound_include_dquote:
|
pound_include_dquote:
|
GETNEXT
|
GETNEXT
|
CASE('\n', start);
|
CASE('\n', start);
|
NOTCASE('"', pound_include_dquote);
|
NOTCASE('"', pound_include_dquote);
|
handle_include(0, map_dot, next - map_dot - 1);
|
handle_include(0, map_dot, next - map_dot - 1);
|
goto start;
|
goto start;
|
|
|
/* #\s*include\s*<(.*)> */
|
/* #\s*include\s*<(.*)> */
|
pound_include_langle:
|
pound_include_langle:
|
GETNEXT
|
GETNEXT
|
CASE('\n', start);
|
CASE('\n', start);
|
NOTCASE('>', pound_include_langle);
|
NOTCASE('>', pound_include_langle);
|
handle_include(1, map_dot, next - map_dot - 1);
|
handle_include(1, map_dot, next - map_dot - 1);
|
goto start;
|
goto start;
|
|
|
/* #\s*d */
|
/* #\s*d */
|
pound_d:
|
pound_d:
|
GETNEXT NOTCASE('e', __start);
|
GETNEXT NOTCASE('e', __start);
|
GETNEXT NOTCASE('f', __start);
|
GETNEXT NOTCASE('f', __start);
|
GETNEXT NOTCASE('i', __start);
|
GETNEXT NOTCASE('i', __start);
|
GETNEXT NOTCASE('n', __start);
|
GETNEXT NOTCASE('n', __start);
|
GETNEXT NOTCASE('e', __start);
|
GETNEXT NOTCASE('e', __start);
|
goto pound_define_undef;
|
goto pound_define_undef;
|
|
|
/* #\s*u */
|
/* #\s*u */
|
pound_u:
|
pound_u:
|
GETNEXT NOTCASE('n', __start);
|
GETNEXT NOTCASE('n', __start);
|
GETNEXT NOTCASE('d', __start);
|
GETNEXT NOTCASE('d', __start);
|
GETNEXT NOTCASE('e', __start);
|
GETNEXT NOTCASE('e', __start);
|
GETNEXT NOTCASE('f', __start);
|
GETNEXT NOTCASE('f', __start);
|
goto pound_define_undef;
|
goto pound_define_undef;
|
|
|
/*
|
/*
|
* #\s*(define|undef)\s*CONFIG_(\w*)
|
* #\s*(define|undef)\s*CONFIG_(\w*)
|
*
|
*
|
* this does not define the word, because it could be inside another
|
* this does not define the word, because it could be inside another
|
* conditional (#if 0). But I do parse the word so that this instance
|
* conditional (#if 0). But I do parse the word so that this instance
|
* does not count as a use. -- mec
|
* does not count as a use. -- mec
|
*/
|
*/
|
pound_define_undef:
|
pound_define_undef:
|
GETNEXT
|
GETNEXT
|
CASE(' ', pound_define_undef);
|
CASE(' ', pound_define_undef);
|
CASE('\t', pound_define_undef);
|
CASE('\t', pound_define_undef);
|
|
|
NOTCASE('C', __start);
|
NOTCASE('C', __start);
|
GETNEXT NOTCASE('O', __start);
|
GETNEXT NOTCASE('O', __start);
|
GETNEXT NOTCASE('N', __start);
|
GETNEXT NOTCASE('N', __start);
|
GETNEXT NOTCASE('F', __start);
|
GETNEXT NOTCASE('F', __start);
|
GETNEXT NOTCASE('I', __start);
|
GETNEXT NOTCASE('I', __start);
|
GETNEXT NOTCASE('G', __start);
|
GETNEXT NOTCASE('G', __start);
|
GETNEXT NOTCASE('_', __start);
|
GETNEXT NOTCASE('_', __start);
|
|
|
map_dot = next;
|
map_dot = next;
|
pound_define_undef_CONFIG_word:
|
pound_define_undef_CONFIG_word:
|
GETNEXT
|
GETNEXT
|
if (isalnum(current) || current == '_')
|
if (isalnum(current) || current == '_')
|
goto pound_define_undef_CONFIG_word;
|
goto pound_define_undef_CONFIG_word;
|
goto __start;
|
goto __start;
|
|
|
/* \<CONFIG_(\w*) */
|
/* \<CONFIG_(\w*) */
|
cee:
|
cee:
|
if (next >= map+2 && (isalnum((int)next[-2]) || next[-2] == '_'))
|
if (next >= map+2 && (isalnum((int)next[-2]) || next[-2] == '_'))
|
goto start;
|
goto start;
|
GETNEXT NOTCASE('O', __start);
|
GETNEXT NOTCASE('O', __start);
|
GETNEXT NOTCASE('N', __start);
|
GETNEXT NOTCASE('N', __start);
|
GETNEXT NOTCASE('F', __start);
|
GETNEXT NOTCASE('F', __start);
|
GETNEXT NOTCASE('I', __start);
|
GETNEXT NOTCASE('I', __start);
|
GETNEXT NOTCASE('G', __start);
|
GETNEXT NOTCASE('G', __start);
|
GETNEXT NOTCASE('_', __start);
|
GETNEXT NOTCASE('_', __start);
|
|
|
map_dot = next;
|
map_dot = next;
|
cee_CONFIG_word:
|
cee_CONFIG_word:
|
GETNEXT
|
GETNEXT
|
if (isalnum(current) || current == '_')
|
if (isalnum(current) || current == '_')
|
goto cee_CONFIG_word;
|
goto cee_CONFIG_word;
|
use_config(map_dot, next - map_dot - 1);
|
use_config(map_dot, next - map_dot - 1);
|
goto __start;
|
goto __start;
|
}
|
}
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Generate dependencies for one file.
|
* Generate dependencies for one file.
|
*/
|
*/
|
void do_depend(const char * filename, const char * command)
|
void do_depend(const char * filename, const char * command)
|
{
|
{
|
int mapsize;
|
int mapsize;
|
int pagesizem1 = getpagesize()-1;
|
int pagesizem1 = getpagesize()-1;
|
int fd;
|
int fd;
|
struct stat st;
|
struct stat st;
|
char * map;
|
char * map;
|
|
|
fd = open(filename, O_RDONLY);
|
fd = open(filename, O_RDONLY);
|
if (fd < 0) {
|
if (fd < 0) {
|
perror(filename);
|
perror(filename);
|
return;
|
return;
|
}
|
}
|
|
|
fstat(fd, &st);
|
fstat(fd, &st);
|
if (st.st_size == 0) {
|
if (st.st_size == 0) {
|
fprintf(stderr,"%s is empty\n",filename);
|
fprintf(stderr,"%s is empty\n",filename);
|
close(fd);
|
close(fd);
|
return;
|
return;
|
}
|
}
|
|
|
mapsize = st.st_size;
|
mapsize = st.st_size;
|
mapsize = (mapsize+pagesizem1) & ~pagesizem1;
|
mapsize = (mapsize+pagesizem1) & ~pagesizem1;
|
map = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, fd, 0);
|
map = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, fd, 0);
|
if ((long) map == -1) {
|
if ((long) map == -1) {
|
perror("mkdep: mmap");
|
perror("mkdep: mmap");
|
close(fd);
|
close(fd);
|
return;
|
return;
|
}
|
}
|
if ((unsigned long) map % sizeof(unsigned long) != 0)
|
if ((unsigned long) map % sizeof(unsigned long) != 0)
|
{
|
{
|
fprintf(stderr, "do_depend: map not aligned\n");
|
fprintf(stderr, "do_depend: map not aligned\n");
|
exit(1);
|
exit(1);
|
}
|
}
|
|
|
hasdep = 0;
|
hasdep = 0;
|
clear_config();
|
clear_config();
|
state_machine(map, map+st.st_size);
|
state_machine(map, map+st.st_size);
|
if (hasdep) {
|
if (hasdep) {
|
puts(command);
|
puts(command);
|
if (*command)
|
if (*command)
|
define_precious(filename);
|
define_precious(filename);
|
}
|
}
|
|
|
munmap(map, mapsize);
|
munmap(map, mapsize);
|
close(fd);
|
close(fd);
|
}
|
}
|
|
|
|
|
|
|
/*
|
/*
|
* Generate dependencies for all files.
|
* Generate dependencies for all files.
|
*/
|
*/
|
int main(int argc, char **argv)
|
int main(int argc, char **argv)
|
{
|
{
|
int len;
|
int len;
|
const char *hpath;
|
const char *hpath;
|
|
|
hpath = getenv("HPATH");
|
hpath = getenv("HPATH");
|
if (!hpath) {
|
if (!hpath) {
|
fputs("mkdep: HPATH not set in environment. "
|
fputs("mkdep: HPATH not set in environment. "
|
"Don't bypass the top level Makefile.\n", stderr);
|
"Don't bypass the top level Makefile.\n", stderr);
|
return 1;
|
return 1;
|
}
|
}
|
|
|
add_path("."); /* for #include "..." */
|
add_path("."); /* for #include "..." */
|
|
|
while (++argv, --argc > 0) {
|
while (++argv, --argc > 0) {
|
if (strncmp(*argv, "-I", 2) == 0) {
|
if (strncmp(*argv, "-I", 2) == 0) {
|
if (*((*argv)+2)) {
|
if (*((*argv)+2)) {
|
add_path((*argv)+2);
|
add_path((*argv)+2);
|
}
|
}
|
else {
|
else {
|
++argv;
|
++argv;
|
--argc;
|
--argc;
|
add_path(*argv);
|
add_path(*argv);
|
}
|
}
|
}
|
}
|
else if (strcmp(*argv, "--") == 0) {
|
else if (strcmp(*argv, "--") == 0) {
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
add_path(hpath); /* must be last entry, for config files */
|
add_path(hpath); /* must be last entry, for config files */
|
|
|
while (--argc > 0) {
|
while (--argc > 0) {
|
const char * filename = *++argv;
|
const char * filename = *++argv;
|
const char * command = __depname;
|
const char * command = __depname;
|
g_filename = 0;
|
g_filename = 0;
|
len = strlen(filename);
|
len = strlen(filename);
|
memcpy(depname, filename, len+1);
|
memcpy(depname, filename, len+1);
|
if (len > 2 && filename[len-2] == '.') {
|
if (len > 2 && filename[len-2] == '.') {
|
if (filename[len-1] == 'c' || filename[len-1] == 'S') {
|
if (filename[len-1] == 'c' || filename[len-1] == 'S') {
|
depname[len-1] = 'o';
|
depname[len-1] = 'o';
|
g_filename = filename;
|
g_filename = filename;
|
command = "";
|
command = "";
|
}
|
}
|
}
|
}
|
do_depend(filename, command);
|
do_depend(filename, command);
|
}
|
}
|
if (len_precious) {
|
if (len_precious) {
|
*(str_precious+len_precious) = '\0';
|
*(str_precious+len_precious) = '\0';
|
printf(".PRECIOUS:%s\n", str_precious);
|
printf(".PRECIOUS:%s\n", str_precious);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
