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dtc: Implement -d option to write out a dependency file

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This will allow callers to rebuild .dtb files when any of the /include/d
.dtsi files are modified, not just the top-level .dts file.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Stephen Warren 2012-01-10 17:27:52 -07:00 committed by Michal Marek
parent 5bb0571bfd
commit 136ec2049f
3 changed files with 25 additions and 1 deletions
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21
scripts/dtc/dtc.c
View File

@ -71,6 +71,7 @@ static void __attribute__ ((noreturn)) usage(void)
fprintf(stderr, "\t\t\tasm - assembler source\n");
fprintf(stderr, "\t-V <output version>\n");
fprintf(stderr, "\t\tBlob version to produce, defaults to %d (relevant for dtb\n\t\tand asm output only)\n", DEFAULT_FDT_VERSION);
fprintf(stderr, "\t-d <output dependency file>\n");
fprintf(stderr, "\t-R <number>\n");
fprintf(stderr, "\t\tMake space for <number> reserve map entries (relevant for \n\t\tdtb and asm output only)\n");
fprintf(stderr, "\t-S <bytes>\n");
@ -99,6 +100,7 @@ int main(int argc, char *argv[])
const char *inform = "dts";
const char *outform = "dts";
const char *outname = "-";
const char *depname = NULL;
int force = 0, check = 0, sort = 0;
const char *arg;
int opt;
@ -111,7 +113,8 @@ int main(int argc, char *argv[])
minsize = 0;
padsize = 0;
while ((opt = getopt(argc, argv, "hI:O:o:V:R:S:p:fcqb:vH:s")) != EOF) {
while ((opt = getopt(argc, argv, "hI:O:o:V:d:R:S:p:fcqb:vH:s"))
!= EOF) {
switch (opt) {
case 'I':
inform = optarg;
@ -125,6 +128,9 @@ int main(int argc, char *argv[])
case 'V':
outversion = strtol(optarg, NULL, 0);
break;
case 'd':
depname = optarg;
break;
case 'R':
reservenum = strtol(optarg, NULL, 0);
break;
@ -188,6 +194,14 @@ int main(int argc, char *argv[])
fprintf(stderr, "DTC: %s->%s on file \"%s\"\n",
inform, outform, arg);
if (depname) {
depfile = fopen(depname, "w");
if (!depfile)
die("Couldn't open dependency file %s: %s\n", depname,
strerror(errno));
fprintf(depfile, "%s:", outname);
}
if (streq(inform, "dts"))
bi = dt_from_source(arg);
else if (streq(inform, "fs"))
@ -197,6 +211,11 @@ int main(int argc, char *argv[])
else
die("Unknown input format \"%s\"\n", inform);
if (depfile) {
fputc('\n', depfile);
fclose(depfile);
}
if (cmdline_boot_cpuid != -1)
bi->boot_cpuid_phys = cmdline_boot_cpuid;

4
scripts/dtc/srcpos.c
View File

@ -40,6 +40,7 @@ static char *dirname(const char *path)
return NULL;
}
FILE *depfile; /* = NULL */
struct srcfile_state *current_srcfile; /* = NULL */
/* Detect infinite include recursion. */
@ -67,6 +68,9 @@ FILE *srcfile_relative_open(const char *fname, char **fullnamep)
strerror(errno));
}
if (depfile)
fprintf(depfile, " %s", fullname);
if (fullnamep)
*fullnamep = fullname;
else

1
scripts/dtc/srcpos.h
View File

@ -30,6 +30,7 @@ struct srcfile_state {
struct srcfile_state *prev;
};
extern FILE *depfile; /* = NULL */
extern struct srcfile_state *current_srcfile; /* = NULL */
FILE *srcfile_relative_open(const char *fname, char **fullnamep);