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build system: check for ENABLE_, USE_ and SKIP_ (not only for CONFIG_)

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This commit is contained in:
Denis Vlasenko 2006-10-19 22:14:58 +00:00
parent b560577cb2
commit 9fa9950784
2 changed files with 23 additions and 14 deletions
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3
include/bb_config.h
View File

@ -2,6 +2,9 @@
* which depend on other symbols, which themself are off.
* Provide them here by hand. Need a better idea. */
/* This is especially bad because it forces rebuild of
* everything whenever any of these options change */
#ifndef ENABLE_FEATURE_GUNZIP_UNCOMPRESS
#define ENABLE_FEATURE_GUNZIP_UNCOMPRESS 0
#define USE_FEATURE_GUNZIP_UNCOMPRESS(...)

34
scripts/basic/fixdep.c
View File

@ -114,10 +114,12 @@
#include <ctype.h>
#include <arpa/inet.h>
/* bbox: not needed
#define INT_CONF ntohl(0x434f4e46)
#define INT_ONFI ntohl(0x4f4e4649)
#define INT_NFIG ntohl(0x4e464947)
#define INT_FIG_ ntohl(0x4649475f)
*/
char *target;
char *depfile;
@ -222,30 +224,32 @@ void use_config(char *m, int slen)
void parse_config_file(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;
char *p, *q;
/* modified for bbox */
char *end = map + len;
char *p = map;
char *q;
int off;
for (; m < end; m++) {
if (*m == INT_CONF) { p = (char *) m ; goto conf; }
if (*m == INT_ONFI) { p = (char *) m-1; goto conf; }
if (*m == INT_NFIG) { p = (char *) m-2; goto conf; }
if (*m == INT_FIG_) { p = (char *) m-3; goto conf; }
for (; p < end; p++) {
if (!memcmp(p, "CONFIG_", 7)) goto conf7;
if (!memcmp(p, "ENABLE_", 7)) goto conf7;
if (!memcmp(p, "USE_", 4)) goto conf4;
if (!memcmp(p, "SKIP_", 5)) goto conf5;
continue;
conf4: off = 4; goto conf;
conf5: off = 5; goto conf;
conf7: off = 7;
conf:
if (p > map + len - 7)
if (p > map + len - off)
continue;
if (memcmp(p, "CONFIG_", 7))
continue;
for (q = p + 7; q < map + len; q++) {
for (q = p + off; q < map + len; q++) {
if (!(isalnum(*q) || *q == '_'))
goto found;
}
continue;
found:
use_config(p+7, q-p-7);
use_config(p+off, q-p-off);
}
}
@ -366,6 +370,7 @@ void print_deps(void)
void traps(void)
{
/* bbox: not needed
static char test[] __attribute__((aligned(sizeof(int)))) = "CONF";
if (*(int *)test != INT_CONF) {
@ -373,6 +378,7 @@ void traps(void)
*(int *)test);
exit(2);
}
*/
}
int main(int argc, char *argv[])