[PATCH v2 08/14] selftests/nolibc: string the core targets

[Zhangjin Wu]

To avoid run targets one by one manually and boringly, let's string them
with IMAGE and .config, the MAKE command will trigger the dependencies
for us.

Note, to allow do menuconfig before extconfig manually, only trigger
defconfig while the .config is not there, it means only trigger
defconfig for the first run or after a mrproper.

Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx>
---
 tools/testing/selftests/nolibc/Makefile | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index 83cb4b017bef..541f3565e584 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -150,6 +150,7 @@ all: run
 
 sysroot: sysroot/$(ARCH)/include
 
+PHONY = sysroot/$(ARCH)/include
 sysroot/$(ARCH)/include:
 	$(Q)rm -rf sysroot/$(ARCH) sysroot/sysroot
 	$(QUIET_MKDIR)mkdir -p sysroot
@@ -205,21 +206,28 @@ mrproper:
 defconfig:
 	$(Q)$(MAKE_KERNEL) $(DEFCONFIG) prepare
 
-menuconfig:
+PHONY += $(KERNEL_CONFIG)
+$(KERNEL_CONFIG):
+	$(Q)if [ ! -f "$(KERNEL_CONFIG)" ]; then $(MAKE) --no-print-directory defconfig; fi
+
+menuconfig: $(KERNEL_CONFIG)
 	$(Q)$(MAKE_KERNEL) menuconfig
 
-extconfig:
+extconfig: $(KERNEL_CONFIG)
 	$(Q)$(srctree)/scripts/kconfig/merge_config.sh -O "$(objtree)" -m "$(KERNEL_CONFIG)" $(foreach c,$(EXTCONFIG),$(wildcard $(CURDIR)/configs/$c))
 	$(Q)$(MAKE_KERNEL) KCONFIG_ALLCONFIG="$(KERNEL_CONFIG)" allnoconfig
 
-kernel: initramfs
+kernel: extconfig
+	$(Q)$(MAKE) --no-print-directory initramfs
 	$(Q)$(MAKE_KERNEL) $(IMAGE_NAME) CONFIG_INITRAMFS_SOURCE=$(CURDIR)/initramfs
 
 # common macros for qemu run/rerun targets
 QEMU_SYSTEM_RUN = qemu-system-$(QEMU_ARCH) -display none -no-reboot -kernel "$(KERNEL_IMAGE)" -serial stdio $(QEMU_ARGS)
 
 # run the tests after building the kernel
-run: kernel
+PHONY += $(KERNEL_IMAGE)
+$(KERNEL_IMAGE): kernel
+run: $(KERNEL_IMAGE)
 	$(Q)$(QEMU_SYSTEM_RUN) $(LOG_OUT)
 	$(Q)$(REPORT_RUN_OUT)
 
@@ -244,4 +252,4 @@ clean:
 	$(call QUIET_CLEAN, run.out)
 	$(Q)rm -rf run.out
 
-.PHONY: sysroot/$(ARCH)/include
+.PHONY: $(PHONY)
-- 
2.25.1