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Subject[PATCH v2 10/14] selftests/nolibc: allow customize CROSS_COMPILE by architecture
Date
Some cross compilers may not just be prefixed with ARCH or XARCH,
customize them by architecture may easier the test a lot, especially,
when iterate with XARCH or ARCH.

After customizing this for every architecture, the minimal test argument
will be architecture itself, no CROSS_COMPILE will be passed.

If the installed cross compiler is not the same as the one customized,
we can also pass CROSS_COMPILE from command line as before, no
regression.

Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
---
tools/testing/selftests/nolibc/Makefile | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index a03fab020ebe..3c2be27747ea 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -42,6 +42,12 @@ IMAGE_loongarch = arch/loongarch/boot/vmlinuz.efi
IMAGE = $(IMAGE_$(XARCH))
IMAGE_NAME = $(notdir $(IMAGE))

+# CROSS_COMPILE: cross toolchain prefix by architecture
+CROSS_COMPILE ?= $(CROSS_COMPILE_$(XARCH))
+
+# make sure CC is prefixed with CROSS_COMPILE
+$(call allow-override,CC,$(CROSS_COMPILE)gcc)
+
# default kernel configurations that appear to be usable
DEFCONFIG_i386 = defconfig
DEFCONFIG_x86_64 = defconfig
--
2.25.1

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