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authorMasahiro Yamada <masahiroy@kernel.org>2021-12-14 11:53:51 +0900
committerMasahiro Yamada <masahiroy@kernel.org>2022-01-08 17:46:35 +0900
commitb8c96a6b466ca3b91530a4ec7f7404f40f8f4d0b (patch)
treebb7e15b3b66cb491a569700b7054bee9f5424ba5 /certs
parent4db9c2e3d055cc11e64b5c9bbaa70b5a552adf0f (diff)
downloadlinux-b8c96a6b466ca3b91530a4ec7f7404f40f8f4d0b.tar.gz
certs: simplify $(srctree)/ handling and remove config_filename macro
The complex macro, config_filename, was introduced to do:

 [1] drop double-quotes from the string value
 [2] add $(srctree)/ prefix in case the file is not found in $(objtree)
 [3] escape spaces and more

[1] will be more generally handled by Kconfig later.

As for [2], Kbuild uses VPATH to search for files in $(objtree),
$(srctree) in this order. GNU Make can natively handle it.

As for [3], converting $(space) to $(space_escape) back and forth looks
questionable to me. It is well-known that GNU Make cannot handle file
paths with spaces in the first place.

Instead of using the complex macro, use $< so it will be expanded to
the file path of the key.

Remove config_filename, finally.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'certs')
-rw-r--r--certs/Makefile32
1 files changed, 13 insertions, 19 deletions
diff --git a/certs/Makefile b/certs/Makefile
index c3c8da03b04b..69c1404152ef 100644
--- a/certs/Makefile
+++ b/certs/Makefile
@@ -15,15 +15,12 @@ endif
 quiet_cmd_extract_certs  = CERT    $@
       cmd_extract_certs  = scripts/extract-cert $(2) $@
 
-ifeq ($(CONFIG_SYSTEM_TRUSTED_KEYRING),y)
-
-$(eval $(call config_filename,SYSTEM_TRUSTED_KEYS))
-
 $(obj)/system_certificates.o: $(obj)/x509_certificate_list
 
-$(obj)/x509_certificate_list: scripts/extract-cert $(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(SYSTEM_TRUSTED_KEYS_FILENAME) FORCE
-	$(call if_changed,extract_certs,$(SYSTEM_TRUSTED_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_TRUSTED_KEYS))
-endif # CONFIG_SYSTEM_TRUSTED_KEYRING
+CONFIG_SYSTEM_TRUSTED_KEYS := $(CONFIG_SYSTEM_TRUSTED_KEYS:"%"=%)
+
+$(obj)/x509_certificate_list: $(CONFIG_SYSTEM_TRUSTED_KEYS) scripts/extract-cert FORCE
+	$(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_TRUSTED_KEYS),$<,""))
 
 targets += x509_certificate_list
 
@@ -72,29 +69,26 @@ $(obj)/x509.genkey:
 
 endif # CONFIG_MODULE_SIG_KEY
 
-$(eval $(call config_filename,MODULE_SIG_KEY))
+CONFIG_MODULE_SIG_KEY := $(CONFIG_MODULE_SIG_KEY:"%"=%)
 
 # If CONFIG_MODULE_SIG_KEY isn't a PKCS#11 URI, depend on it
-ifeq ($(patsubst pkcs11:%,%,$(firstword $(MODULE_SIG_KEY_FILENAME))),$(firstword $(MODULE_SIG_KEY_FILENAME)))
-X509_DEP := $(MODULE_SIG_KEY_SRCPREFIX)$(MODULE_SIG_KEY_FILENAME)
+ifneq ($(filter-out pkcs11:%, %(CONFIG_MODULE_SIG_KEY)),)
+X509_DEP := $(CONFIG_MODULE_SIG_KEY)
 endif
 
 $(obj)/system_certificates.o: $(obj)/signing_key.x509
 
-$(obj)/signing_key.x509: scripts/extract-cert $(X509_DEP) FORCE
-	$(call if_changed,extract_certs,$(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY))
+$(obj)/signing_key.x509: $(X509_DEP) scripts/extract-cert FORCE
+	$(call if_changed,extract_certs,$(if $(X509_DEP),$<,$(CONFIG_MODULE_SIG_KEY)))
 endif # CONFIG_MODULE_SIG
 
 targets += signing_key.x509
 
-ifeq ($(CONFIG_SYSTEM_REVOCATION_LIST),y)
-
-$(eval $(call config_filename,SYSTEM_REVOCATION_KEYS))
-
 $(obj)/revocation_certificates.o: $(obj)/x509_revocation_list
 
-$(obj)/x509_revocation_list: scripts/extract-cert $(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(SYSTEM_REVOCATION_KEYS_FILENAME) FORCE
-	$(call if_changed,extract_certs,$(SYSTEM_REVOCATION_KEYS_SRCPREFIX)$(CONFIG_SYSTEM_REVOCATION_KEYS))
-endif
+CONFIG_SYSTEM_REVOCATION_KEYS := $(CONFIG_SYSTEM_REVOCATION_KEYS:"%"=%)
+
+$(obj)/x509_revocation_list: $(CONFIG_SYSTEM_REVOCATION_KEYS) scripts/extract-cert FORCE
+	$(call if_changed,extract_certs,$(if $(CONFIG_SYSTEM_REVOCATION_KEYS),$<,""))
 
 targets += x509_revocation_list