kbuild: fix CROSS_COMPILE settings in config.mk
The syntax
CROSS_COMIPLE ?= <cross_compiler_prefix>
does not work because config.mk is parsed after
exporting CROSS_COMPILE.
Like Linux Kernel's arch/$(ARCH)/Makefile,
we must write as follows:
ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := <cross_compiler_prefix>
endif
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/arch/openrisc/config.mk b/arch/openrisc/config.mk
index 13015eb..981edff 100644
--- a/arch/openrisc/config.mk
+++ b/arch/openrisc/config.mk
@@ -5,7 +5,9 @@
# SPDX-License-Identifier: GPL-2.0+
#
-CROSS_COMPILE ?= or32-elf-
+ifeq ($(CROSS_COMPILE),)
+CROSS_COMPILE := or32-elf-
+endif
# r10 used for global object pointer, already set in OR32 GCC but just to be
# clear