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authorJoel Challis <git@zvecr.com>2022-01-25 00:50:35 +0000
committerGitHub <noreply@github.com>2022-01-25 11:50:35 +1100
commit7df371750f297480ba5e78559ad3314b2d580888 (patch)
tree618281768d39f31c4764126f93af1db287e40f68 /Makefile
parent5f233458869bc5fd2d91b24f59c8519d5f99c9a6 (diff)
Workaround in Makefile for recursive rule matching (#15988)
* Bodge for recursive rule matching * Bodge for recursive rule matching - force python3 * Tidy up
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile51
1 files changed, 9 insertions, 42 deletions
diff --git a/Makefile b/Makefile
index b435837d30..22c79880a3 100644
--- a/Makefile
+++ b/Makefile
@@ -87,53 +87,20 @@ endef
# a function that returns the value
COMPARE_AND_REMOVE_FROM_RULE = $(eval $(call COMPARE_AND_REMOVE_FROM_RULE_HELPER,$1))$(RULE_FOUND)
-
-# Recursively try to find a match for the start of the rule to be checked
-# $1 The list to be checked
-# If a match is found, then RULE_FOUND is set to true
-# and MATCHED_ITEM to the item that was matched
-define TRY_TO_MATCH_RULE_FROM_LIST_HELPER3
- ifneq ($1,)
- ifeq ($$(call COMPARE_AND_REMOVE_FROM_RULE,$$(firstword $1)),true)
- MATCHED_ITEM := $$(firstword $1)
- else
- $$(eval $$(call TRY_TO_MATCH_RULE_FROM_LIST_HELPER3,$$(wordlist 2,9999,$1)))
- endif
- endif
-endef
-
-# A recursive helper function for finding the longest match
-# $1 The list to be checked
-# It works by always removing the currently matched item from the list
-define TRY_TO_MATCH_RULE_FROM_LIST_HELPER2
- # Stop the recursion when the list is empty
- ifneq ($1,)
- RULE_BEFORE := $$(RULE)
- $$(eval $$(call TRY_TO_MATCH_RULE_FROM_LIST_HELPER3,$1))
- # If a match is found in the current list, otherwise just return what we had before
- ifeq ($$(RULE_FOUND),true)
- # Save the best match so far and call itself recursively
- BEST_MATCH := $$(MATCHED_ITEM)
- BEST_MATCH_RULE := $$(RULE)
- RULE_FOUND := false
- RULE := $$(RULE_BEFORE)
- $$(eval $$(call TRY_TO_MATCH_RULE_FROM_LIST_HELPER2,$$(filter-out $$(MATCHED_ITEM),$1)))
- endif
- endif
-endef
-
-
-# Recursively try to find the longest match for the start of the rule to be checked
+# Try to find a match for the start of the rule to be checked
# $1 The list to be checked
# If a match is found, then RULE_FOUND is set to true
# and MATCHED_ITEM to the item that was matched
define TRY_TO_MATCH_RULE_FROM_LIST_HELPER
- BEST_MATCH :=
- $$(eval $$(call TRY_TO_MATCH_RULE_FROM_LIST_HELPER2,$1))
- ifneq ($$(BEST_MATCH),)
+ # Split on ":", padding with empty strings to avoid indexing issues
+ TOKEN1:=$$(shell python3 -c "import sys; print((sys.argv[1].split(':',1)+[''])[0])" $$(RULE))
+ TOKENr:=$$(shell python3 -c "import sys; print((sys.argv[1].split(':',1)+[''])[1])" $$(RULE))
+
+ FOUNDx:=$$(shell echo $1 | tr " " "\n" | grep -Fx $$(TOKEN1))
+ ifneq ($$(FOUNDx),)
+ RULE := $$(TOKENr)
RULE_FOUND := true
- RULE := $$(BEST_MATCH_RULE)
- MATCHED_ITEM := $$(BEST_MATCH)
+ MATCHED_ITEM := $$(TOKEN1)
else
RULE_FOUND := false
MATCHED_ITEM :=