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-rw-r--r--Makefile21
1 files changed, 13 insertions, 8 deletions
diff --git a/Makefile b/Makefile
index b8efbfe9da94..096b1e6cd965 100644
--- a/Makefile
+++ b/Makefile
@@ -781,17 +781,22 @@ $(KCONFIG_CONFIG):
else # !may-sync-config
# External modules and some install targets need include/generated/autoconf.h
# and include/config/auto.conf but do not care if they are up-to-date.
-# Use auto.conf to trigger the test
+# Use auto.conf to show the error message
+
+checked-configs := include/generated/autoconf.h include/config/auto.conf
+missing-configs := $(filter-out $(wildcard $(checked-configs)), $(checked-configs))
+
+ifdef missing-configs
PHONY += include/config/auto.conf
include/config/auto.conf:
- @test -e include/generated/autoconf.h -a -e $@ || ( \
- echo >&2; \
- echo >&2 " ERROR: Kernel configuration is invalid."; \
- echo >&2 " include/generated/autoconf.h or $@ are missing.";\
- echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
- echo >&2 ; \
- /bin/false)
+ @echo >&2 '***'
+ @echo >&2 '*** ERROR: Kernel configuration is invalid. The following files are missing:'
+ @printf >&2 '*** - %s\n' $(missing-configs)
+ @echo >&2 '*** Run "make oldconfig && make prepare" on kernel source to fix it.'
+ @echo >&2 '***'
+ @/bin/false
+endif
endif # may-sync-config
endif # need-config