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certs: use $< and $@ to simplify the key generation rule

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Do not repeat $(obj)/x509.genkey or $(obj)/signing_key.pem

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
This commit is contained in:
Masahiro Yamada 2021-12-14 11:53:45 +09:00
parent 4fbce81933
commit c537e4d04e
1 changed files with 2 additions and 3 deletions
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5
certs/Makefile
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@ -60,9 +60,8 @@ keytype-$(CONFIG_MODULE_SIG_KEY_TYPE_ECDSA) := -newkey ec -pkeyopt ec_paramgen_c
quiet_cmd_gen_key = GENKEY $@
cmd_gen_key = openssl req -new -nodes -utf8 -$(CONFIG_MODULE_SIG_HASH) -days 36500 \
-batch -x509 -config $(obj)/x509.genkey \
-outform PEM -out $(obj)/signing_key.pem \
-keyout $(obj)/signing_key.pem $(keytype-y) 2>&1
-batch -x509 -config $< \
-outform PEM -out $@ -keyout $@ $(keytype-y) 2>&1
$(obj)/signing_key.pem: $(obj)/x509.genkey FORCE
$(call if_changed,gen_key)