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ff10687a6c
Previously, ports that were needed for a scenario and that were not prepared or outdated, triggered one assertion each during the second build stage. The commit slots a mechanism in ahead that gathers all these ports during the first build stage and reports them in form of a list before the second build stage is entered. This list can be used directly as argument for tool/ports/prepare_port to prepare respectively update the ports. If, however, this mechanism is not available, for example because a target is build without the first build stage, the old assertion still prevents the target from running into troubles with a missing port. Fixes #1872
58 lines
2.2 KiB
PHP
58 lines
2.2 KiB
PHP
#
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# Utility for selecting files from the list of repositories
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#
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select_from_repositories = $(firstword $(foreach REP,$(REPOSITORIES),$(wildcard $(REP)/$(1))))
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#
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# Check presence of argument $1. Back out with error message $2 if not defined.
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#
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_assert = $(if $1,$1,$(error Error: $2))
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#
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# Append value $1 to variable named $2 and return value $1
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#
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# We must not specify an '=' here. Even though the make documentation states
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# that the omission of '=' should be equivalent to '=', the behaviour is not
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# the same.
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#
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define _capture
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$(eval $2 += $1)
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$1
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endef
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#
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# Lookup port directory by a given port name
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#
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# The location of the port directory is determined by the hash value stored
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# in the corresponding 'ports/<port>.hash' file. First we have to find the
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# hash file in one of the REPOSITORIES. Once we found the hash file, we use
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# its contained hash number to construct the path to the corresponding
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# subdirectory within CONTRIB_DIR. Finally, we check if the path exists.
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#
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# When reading the hash file in the '_hash_of_port' function, we feed stdin
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# to 'cat' to prevent 'cat' from blocking if the hash file is missing.
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#
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# As a side effect of calling 'select_from_ports' we log the used hash file
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# in the 'PORT_HASH_FILES' variable. This enables us incorporate the hash file
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# as dependency for all object files.
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#
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_lookup_port_hash_file = $(wildcard $(addsuffix /ports/$1.hash,$(REPOSITORIES)))
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_capture_port_hash_file = $(call _capture,$(call _lookup_port_hash_file,$1),PORT_HASH_FILES)
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_hash_of_port = $(shell echo | cat $(call _capture_port_hash_file,$1))
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_port_dir = $(wildcard $(CONTRIB_DIR)/$1-$(call _hash_of_port,$1))
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#
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# We accumulate missing ports instead of stopping only if the environment
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# explicitely states that it is aware of it. This ensures that environments
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# that are not aware can't run into troubles with missing ports.
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#
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ifeq (ACCUMULATE_MISSING_PORTS,)
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_checked_port_dir = $(call _assert,$(call _port_dir,$1),$1 is not prepared or outdated)
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else
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_port_missing = $(eval DEP_MISSING_PORTS += $1)
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_checked_port = $(if $2,$2,$(call _port_missing,$1))
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_checked_port_dir = $(call _checked_port,$1,$(call _port_dir,$1))
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endif
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select_from_ports = $(call _checked_port_dir,$1)
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