genode/tool/ports/mk/prepare_single_port.mk

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#
# \brief Tool for downloading and patching 3rd-party source code
# \author Norman Feske
# \date 2014-05-07
#
#
# Determine Genode base directory based on the known location of the
# 'create_builddir' tool within the Genode source tree
#
export GENODE_DIR := $(realpath $(dir $(MAKEFILE_LIST))/../../..)
export GENODE_CONTRIB_CACHE ?= $(GENODE_DIR)/contrib/cache
include $(GENODE_DIR)/tool/ports/mk/front_end.inc
include $(GENODE_DIR)/tool/ports/mk/check_port_arg.inc
ifeq ($(HASH),)
$(TARGET): nonexisting_hash
nonexisting_hash:
@$(ECHO) "Error: Port $(PORT_NAME) lacks a valid hash"; false
endif
#
# Default rule that triggers the actual preparation steps
#
$(TARGET): _check_integrity
_check_integrity : _install_in_port_dir
ifneq ($(CHECK_HASH),no)
$(VERBOSE)diff $(PORT_HASH_FILE) $(HASH_FILE) > /dev/null ||\
($(ECHO) "Error: $(_REL_HASH_FILE) is out of date, expected" `cat $(PORT_HASH_FILE)` ""; false)
endif
#
# During the preparatio steps, the port directory is renamed. We use the suffix
# ".incomplete" to mark this transient state of the port directory.
#
_install_in_port_dir: $(PORT_DIR)
@#\
# if the transient directory already exists, reuse it as it may contain\
# finished steps such as downloads. By reusing it, we avoid downloading\
# the same files again and again while working on a port. However, in this\
# case, we already have created an empty port directory via the $(PORT_DIR)\
# rule below. To avoid having both the port directory and the transient\
# port directory present, remove the just-created port directory.\
#
$(VERBOSE)(test -d $(PORT_DIR).incomplete && rmdir $(PORT_DIR)) || true
@#\
# If no transient directory exists, rename the port directory accordingly.\
#
$(VERBOSE)test -d $(PORT_DIR).incomplete || mv --force $(PORT_DIR) $(PORT_DIR).incomplete
$(VERBOSE)$(MAKE) --no-print-directory \
-f $(GENODE_DIR)/tool/ports/mk/install.mk \
-C $(PORT_DIR).incomplete \
PORT=$(PORT) VERBOSE=$(VERBOSE)
@#\
# The preparation finished successfully. So we can rename the transient\
# directory to the real one.\
#
$(VERBOSE)mv $(PORT_DIR).incomplete $(PORT_DIR)
$(PORT_DIR):
$(VERBOSE)mkdir -p $@