[S] Change in coreboot[main]: build system: Exempt `make *config` from strict symbol checks

[Patrick Georgi (Code Review)]

Patrick Georgi has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/79298?usp=email )

Change subject: build system: Exempt `make *config` from strict symbol checks
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build system: Exempt `make *config` from strict symbol checks

The "config" targets exist to edit the .config file, and so they
should be more forgiving with invalid configs (that they'll convert
into valid configs on save).

The regular build process still fails if the .config looks unexpected
(for example when there's an unknown config flag).

Change-Id: If427e075766c68d493dd406609f21b6bb27d1d74
Signed-off-by: Patrick Georgi 
---
M Makefile
M util/kconfig/Makefile.inc
2 files changed, 6 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/79298/1

diff --git a/Makefile b/Makefile
index 5ed6933..8ef8d20 100644
--- a/Makefile
+++ b/Makefile
@@ -29,15 +29,17 @@
 KCONFIG_SPLITCONFIG := $(obj)/config/
 KCONFIG_TRISTATE := $(obj)/tristate.conf
 KCONFIG_NEGATIVES := 1
-KCONFIG_WERROR:= 1
-KCONFIG_WARN_UNKNOWN_SYMBOLS:= 1
+KCONFIG_WERROR := 1
+KCONFIG_WARN_UNKNOWN_SYMBOLS := 1
 KCONFIG_PACKAGE := CB.Config
 KCONFIG_MAKEFILE_REAL ?= $(objk)/Makefile.real

COREBOOT_EXPORTS += KCONFIG_CONFIG KCONFIG_AUTOHEADER KCONFIG_AUTOCONFIG
 COREBOOT_EXPORTS += KCONFIG_DEPENDENCIES KCONFIG_SPLITCONFIG KCONFIG_TRISTATE
-COREBOOT_EXPORTS += KCONFIG_NEGATIVES KCONFIG_WERROR
-COREBOOT_EXPORTS += KCONFIG_WARN_UNKNOWN_SYMBOLS
+COREBOOT_EXPORTS += KCONFIG_NEGATIVES
+ifeq ($(filter %config,$(MAKECMDGOALS)),)
+COREBOOT_EXPORTS += KCONFIG_WERROR KCONFIG_WARN_UNKNOWN_SYMBOLS
+endif
 COREBOOT_EXPORTS += KCONFIG_AUTOADS KCONFIG_PACKAGE

# Make does not offer a recursive wildcard function, so here's one:
diff --git a/util/kconfig/Makefile.inc b/util/kconfig/Makefile.inc
index 3a9f353..83fad88 100644
--- a/util/kconfig/Makefile.inc
+++ b/util/kconfig/Makefile.inc
@@ -47,8 +47,6 @@

# Fill in Linux kconfig build rules to work

-oldconfig: KCONFIG_STRICT=
-
 savedefconfig: $(objk)/conf
    cp $(DOTCONFIG) $(DEFCONFIG)
    chmod +w $(DEFCONFIG)