58 lines
2.2 KiB
PHP
58 lines
2.2 KiB
PHP
#
|
|
# Utility for selecting files from the list of repositories
|
|
#
|
|
select_from_repositories = $(firstword $(foreach REP,$(REPOSITORIES),$(wildcard $(REP)/$(1))))
|
|
|
|
#
|
|
# Check presence of argument $1. Back out with error message $2 if not defined.
|
|
#
|
|
_assert = $(if $1,$1,$(error Error: $2))
|
|
|
|
#
|
|
# Append value $1 to variable named $2 and return value $1
|
|
#
|
|
# We must not specify an '=' here. Even though the make documentation states
|
|
# that the omission of '=' should be equivalent to '=', the behaviour is not
|
|
# the same.
|
|
#
|
|
define _capture
|
|
$(eval $2 += $1)
|
|
$1
|
|
endef
|
|
|
|
#
|
|
# Lookup port directory by a given port name
|
|
#
|
|
# The location of the port directory is determined by the hash value stored
|
|
# in the corresponding 'ports/<port>.hash' file. First we have to find the
|
|
# hash file in one of the REPOSITORIES. Once we found the hash file, we use
|
|
# its contained hash number to construct the path to the corresponding
|
|
# subdirectory within CONTRIB_DIR. Finally, we check if the path exists.
|
|
#
|
|
# When reading the hash file in the '_hash_of_port' function, we feed stdin
|
|
# to 'cat' to prevent 'cat' from blocking if the hash file is missing.
|
|
#
|
|
# As a side effect of calling 'select_from_ports' we log the used hash file
|
|
# in the 'PORT_HASH_FILES' variable. This enables us incorporate the hash file
|
|
# as dependency for all object files.
|
|
#
|
|
_lookup_port_hash_file = $(wildcard $(addsuffix /ports/$1.hash,$(REPOSITORIES)))
|
|
_capture_port_hash_file = $(call _capture,$(call _lookup_port_hash_file,$1),PORT_HASH_FILES)
|
|
_hash_of_port = $(shell echo | cat $(call _capture_port_hash_file,$1))
|
|
_port_dir = $(wildcard $(CONTRIB_DIR)/$1-$(call _hash_of_port,$1))
|
|
|
|
#
|
|
# We accumulate missing ports instead of stopping only if the environment
|
|
# explicitely states that it is aware of it. This ensures that environments
|
|
# that are not aware can't run into troubles with missing ports.
|
|
#
|
|
ifeq (ACCUMULATE_MISSING_PORTS,)
|
|
_checked_port_dir = $(call _assert,$(call _port_dir,$1),$1 is not prepared or outdated)
|
|
else
|
|
_port_missing = $(eval DEP_MISSING_PORTS += $1)
|
|
_checked_port = $(if $2,$2,$(call _port_missing,$1))
|
|
_checked_port_dir = $(call _checked_port,$1,$(call _port_dir,$1))
|
|
endif
|
|
|
|
select_from_ports = $(call _checked_port_dir,$1)
|