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[v2,3/7] selftests/nolibc: add extra configs customize support

Message ID 06d7db26484ca13e583ddad43af1bc0e4a99674f.1690373704.git.falcon@tinylab.org
State New
Headers show
Series tools/nolibc: add 32/64-bit powerpc support | expand

Commit Message

Zhangjin Wu July 26, 2023, 2:52 p.m. UTC 
The default DEFCONFIG_<ARCH> may not always work for all architectures,
some architectures require to add extra kernel config options, this
allows to add extra options in the defconfig target.

It allows to customize extra kernel config options via the common
common.config and the architecture specific <ARCH>.config, at last
trigger 'allnoconfig' to let them take effect with missing config
options as disabled.

The scripts/kconfig/merge_config.sh tool is used to merge the extra
config files.

Suggested-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/lkml/67eb70d4-c9ff-4afc-bac7-7f36cc2c81bc@t-8ch.de/
Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
---
 tools/testing/selftests/nolibc/Makefile | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index f42adef87e12..9576f1a0a98d 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -39,6 +39,9 @@  DEFCONFIG_s390       = defconfig
 DEFCONFIG_loongarch  = defconfig
 DEFCONFIG            = $(DEFCONFIG_$(ARCH))
 
+# extra kernel config files under configs/, include common + architecture specific
+EXTCONFIG            = common.config $(ARCH).config
+
 # optional tests to run (default = all)
 TEST =
 
@@ -161,6 +164,8 @@  initramfs: nolibc-test
 
 defconfig:
 	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) mrproper $(DEFCONFIG) prepare
+	$(Q)$(srctree)/scripts/kconfig/merge_config.sh -O "$(srctree)" -m "$(srctree)/.config" $(foreach c,$(EXTCONFIG),$(wildcard $(CURDIR)/configs/$c))
+	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) KCONFIG_ALLCONFIG="$(srctree)/.config" allnoconfig
 
 kernel: initramfs
 	$(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs