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Subject[PATCH 13/17] selftests/nolibc: add a "kernel" target to build the kernel with the initramfs
Date
The "kernel" target rebuilds the kernel with the current config for the
selected arch, with an initramfs containing the nolibc-test utility.

Since image names depend on the architecture, the currently supported
ones are referenced and resolved based on the architecture.

Signed-off-by: Willy Tarreau <w@1wt.eu>
---
tools/testing/selftests/nolibc/Makefile | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index fd0a67082334..4a2ab0e73ce2 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -12,6 +12,16 @@ include $(srctree)/scripts/subarch.include
ARCH = $(SUBARCH)
endif

+# kernel image names by architecture
+IMAGE_i386 = arch/x86/boot/bzImage
+IMAGE_x86 = arch/x86/boot/bzImage
+IMAGE_arm64 = arch/arm64/boot/Image
+IMAGE_arm = arch/arm/boot/zImage
+IMAGE_mips = vmlinuz
+IMAGE_riscv = arch/riscv/boot/Image
+IMAGE = $(IMAGE_$(ARCH))
+IMAGE_NAME = $(notdir $(IMAGE))
+
# OUTPUT is only set when run from the main makefile, otherwise
# it defaults to this nolibc directory.
OUTPUT ?= $(CURDIR)/
@@ -36,6 +46,9 @@ initramfs: nolibc-test
$(call QUIET_INSTALL, initramfs/init)
$(Q)cp nolibc-test initramfs/init

+kernel: initramfs
+ $(Q)$(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs
+
clean:
$(call QUIET_CLEAN, nolibc-test)
$(Q)rm -f nolibc-test
--
2.17.5
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