[M] Change in coreboot[master]: util/kconfig: Move Kconfig deps back into build/config

[Martin L Roth (Code Review)]

Martin L Roth has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/69535 )

Change subject: util/kconfig: Move Kconfig deps back into build/config
......................................................................

util/kconfig: Move Kconfig deps back into build/config

The change being reverted [1] caused all the Kconfig dependency files
to be generated at the top level of coreboot's build directory.

This reverts that behavior and puts the dependencies back where we're
used to them being.

Signed-off-by: Martin Roth 
Change-Id: Ic4b48831705c3206e7c2e09f01d072d1cde9c9c4
---
A util/kconfig/patches/0014-util-kconfig-Move-Kconfig-deps-back-into-build-confi.patch
M util/kconfig/patches/series
2 files changed, 81 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/35/69535/1

diff --git a/util/kconfig/patches/0014-util-kconfig-Move-Kconfig-deps-back-into-build-confi.patch b/util/kconfig/patches/0014-util-kconfig-Move-Kconfig-deps-back-into-build-confi.patch
new file mode 100644
index 0000000..fb85035
--- /dev/null
+++ b/util/kconfig/patches/0014-util-kconfig-Move-Kconfig-deps-back-into-build-confi.patch
@@ -0,0 +1,64 @@
+From 2a44aa33d6506a29b14d9c429410ad582d1d6636 Mon Sep 17 00:00:00 2001
+From: Martin Roth 
+Date: Sun, 13 Nov 2022 15:20:57 -0700
+Subject: [PATCH] util/kconfig: Move Kconfig deps back into build/config
+
+revert commit 1b9e740a8 (kconfig: fix failing to generate auto.conf) [1]
+
+The above change caused all of the enabled kconfig options to be written
+into the top level build directory.  We don't want that, so go back to
+the old behavior for the coreboot tree.
+
+[1] https://web.archive.org/web/20220316120807/https://github.com/torvalds/linux...
+
+Signed-off-by: Martin Roth 
+Change-Id: I2904f69a5d85337ad0a6b48590ccd4b4a6e38b70
+---
+ util/kconfig/confdata.c | 20 +++++++++++---------
+ 1 file changed, 11 insertions(+), 9 deletions(-)
+
+diff --git a/util/kconfig/confdata.c b/util/kconfig/confdata.c
+index 95fb960179..3da9e8b38d 100644
+--- a/util/kconfig/confdata.c
++++ b/util/kconfig/confdata.c
+@@ -230,6 +230,13 @@ static const char *conf_get_autoheader_name(void)
+ 	return name ? name : "include/generated/autoconf.h";
+ }
+ 
++static const char *conf_get_autobase_name(void)
++{
++	char *name = getenv("KCONFIG_SPLITCONFIG");
++
++	return name ? name : "include/config/";
++}
++
+ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
+ {
+ 	char *p2;
+@@ -1024,19 +1031,14 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)
+ 
+ static int conf_touch_deps(void)
+ {
+-	const char *name, *tmp;
++	const char *name;
+ 	struct symbol *sym;
+ 	int res, i;
+ 
+-	name = conf_get_autoconfig_name();
+-	tmp = strrchr(name, '/');
+-	depfile_prefix_len = tmp ? tmp - name + 1 : 0;
+-	if (depfile_prefix_len + 1 > sizeof(depfile_path))
+-		return -1;
+-
+-	strncpy(depfile_path, name, depfile_prefix_len);
+-	depfile_path[depfile_prefix_len] = 0;
++	strcpy(depfile_path, conf_get_autobase_name());
++	depfile_prefix_len = strlen(depfile_path);
+ 
++	name = conf_get_autoconfig_name();
+ 	conf_read_simple(name, S_DEF_AUTO);
+ 	sym_calc_value(modules_sym);
+ 
+-- 
+2.30.2
+
diff --git a/util/kconfig/patches/series b/util/kconfig/patches/series
index 13b684b..655c493 100644
--- a/util/kconfig/patches/series
+++ b/util/kconfig/patches/series
@@ -9,3 +9,4 @@
 0009-util-kconfig-Allow-emitting-false-booleans-into-kconfig-output.patch
 0010-reenable-source-in-choice.patch
 0013-util-kconfig-detect-ncurses-on-FreeBSD.patch
+0014-util-kconfig-Move-Kconfig-deps-back-into-build-confi.patch