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Kconfig: Create dependency header files in outpur directory.

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Kconfig creates a header file per each Kconfig symbol that changes
in between configuration changes and rebuilds.

This commit creates the files in the output directory specified by the
O environment variable.

Change-Id: I01b3482e9497f70961268505865788385b41ca8f
Signed-off-by: Juan Manuel Cruz <juan.m.cruz.alcaraz@linux.intel.com>
This commit is contained in:
Juan Manuel Cruz 2015-06-16 13:14:52 -05:00 • committed by Anas Nashif
commit 1eb89a9b3a
2 changed files with 132 additions and 0 deletions
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4
scripts/kconfig/Makefile
View file

@ -33,11 +33,15 @@ oldconfig: $(obj)/conf
$< --$@ $(Kconfig)
silentoldconfig: $(obj)/conf
ifndef O
$(Q)mkdir -p include/config include/generated
endif
$< --$@ $(Kconfig)
localyesconfig localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
ifndef O
$(Q)mkdir -p include/config include/generated
endif
$(Q)perl $< --$@ $(srctree) $(Kconfig) > .tmp.config
$(Q)if [ -f .config ]; then \
cmp -s .tmp.config .config || \

128
scripts/kconfig/confdata.c
View file

@ -832,6 +832,131 @@ next:
return 0;
}
static int conf_split_config(void)
{
const char *projdir;
const char *outdir;
const char *name;
char path[PATH_MAX+1];
char *s, *d, c;
struct symbol *sym;
struct stat sb;
int res, i, fd;
name = conf_get_autoconfig_name();
conf_read_simple(name, S_DEF_AUTO);
outdir = getenv("O");
if (outdir)
if (chdir(outdir))
return 1;
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;
projdir = getenv("ZEPHYR_BASE");
if (outdir && projdir){
if (chdir(projdir))
return 1;
}
return res;
}
int conf_write_autoconf(void)
{
struct symbol *sym;
@ -847,6 +972,9 @@ int conf_write_autoconf(void)
file_write_dep(name);
if (conf_split_config())
return 1;
out = fopen(".tmpconfig", "w");
if (!out)
return 1;