281 lines
9.4 KiB
Makefile
281 lines
9.4 KiB
Makefile
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#
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# \brief Front end to the Genode build system
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# \author Norman Feske
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# \date 2011-08-04
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#
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#
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# The operation of the build system can be tuned using the following variables,
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# which can be specified at the command line or supplied via the
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# 'etc/build.conf' file.
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#
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# BASE_DIR - this directory points to Genode's 'base' repository
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# REPOSITORIES - list of directories incorporared into the build process
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# VERBOSE - variable that controls the verboseness of the build process
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#
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# By default, compiler messages are not displayed. If you are
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# interested in these messages set this variable to nothing.
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# ('VERBOSE=')
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#
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# VERBOSE_MK - variable that controls the verboseness of make invocations
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# VERBOSE_DIR - variable that controls the verboseness of changing directories
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#
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# Using this variable, you can enable the make messages printed
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# when changing directories. To enable the messages, set the
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# variable to nothing.
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#
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# LIB_CACHE_DIR - location of the library build cache
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#
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# This variable defines the place for the library build cache.
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# Normally, the libcache is located at 'var/libcache' and
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# there is no need to change it.
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#
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##
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## Define global configuration variables
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##
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-include etc/build.conf
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PWD := $(shell pwd)
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BUILD_BASE_DIR := $(PWD)
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INSTALL_DIR := $(PWD)/bin
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export BASE_DIR ?= ../base
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export REPOSITORIES ?= $(BASE_DIR:%base=%base-linux) $(BASE_DIR)
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export VERBOSE ?= @
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export VERBOSE_DIR ?= --no-print-directory
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export VERBOSE_MK ?= @
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export LIB_CACHE_DIR ?= $(BUILD_BASE_DIR)/var/libcache
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export LIB_PROGRESS_LOG ?= $(BUILD_BASE_DIR)/progress.log
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export LIB_DEP_FILE ?= var/libdeps
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export ECHO ?= echo -e
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#
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# Convert user-defined directories to absolute directories
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#
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# The 'echo' shell command expands '~' characters to the home directory,
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# 'realpath' converts relative path names to absolute.
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#
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REPOSITORIES := $(realpath $(shell echo $(REPOSITORIES)))
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BASE_DIR := $(realpath $(shell echo $(BASE_DIR)))
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#
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# Configure shell program before executing any shell commands. On Ubuntu the
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# standard shell is dash, which breaks colored output via its built-in echo
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# command.
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#
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export SHELL := $(shell which bash)
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select_from_repositories = $(firstword $(foreach REP,$(REPOSITORIES),$(wildcard $(REP)/$(1))))
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include $(BASE_DIR)/mk/global.mk
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#
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# Some compilers do not support the compiler arguments that we use with 'gcc'
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# and, consequently, spit errors. Hence, we have to check if the compiler
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# arguments are supported and drop them in the other case. We cache the result
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# of the check in the CC_OPT_CHECKCC variable. The caching improves the build
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# performance by 5 to 10 percent.
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#
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checkcc = $(shell if $(CUSTOM_CC) $(1) -o /dev/null -xc - <<< 'int main(void){return 0;}' &> /dev/null; then echo "$(1)" ; fi ;)
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CC_OPT_CHECKCC = $(call checkcc, -static)
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CC_OPT_CHECKCC += $(call checkcc, -fno-stack-protector)
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export CC_OPT_CHECKCC
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export LIBGCC_INC_DIR = $(shell dirname `$(CUSTOM_CXX_LIB) -print-libgcc-file-name`)/include
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#
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# Find out about the target directories to build
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#
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DST_DIRS = $(filter-out all clean bin cleanall again run/%,$(MAKECMDGOALS))
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ifeq ($(MAKECMDGOALS),)
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DST_DIRS = .
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endif
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#
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# Default rule: build all directories specified as make arguments
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#
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all $(DST_DIRS): gen_deps_and_build_targets
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@true
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#
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# Helper to find targets in repositories
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# The sed command is there to replace /./ by /. This happens when DST_DIRS = .
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#
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find_src_target_mk = $(GNU_FIND) $$i/src/$(@:.visit=) -name target.mk 2>/dev/null | sed "s/\/\.\//\//g"
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find_all_src_target_mk = for i in $(REPOSITORIES); do $(find_src_target_mk); done
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-include $(call select_from_repositories,etc/specs.conf)
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-include $(BUILD_BASE_DIR)/etc/specs.conf
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export SPEC_FILES := $(foreach SPEC,$(SPECS),$(call select_from_repositories,mk/spec-$(SPEC).mk))
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include $(SPEC_FILES)
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export SPECS
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##
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## First stage: generate library dependencies
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##
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#
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# Reset library-build log and library-dependency file
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#
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# The 'progress' file contains the names of the already processed libraries
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# of the current build process. Before considering to process any library,
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# the build system checks if the library is already present in the 'progress'
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# file and, if yes, skips it.
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#
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.PHONY: init_progress_log
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init_progress_log:
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@echo "#" > $(LIB_PROGRESS_LOG)
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@echo "# Library build progress log - generated by dep_prg.mk and dep_lib.mk" >> $(LIB_PROGRESS_LOG)
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@echo "#" >> $(LIB_PROGRESS_LOG)
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.PHONY: init_libdep_file
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init_libdep_file:
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@echo "#" > $(LIB_DEP_FILE)
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@echo "# Library dependencies for build '$(DST_DIRS)'" >> $(LIB_DEP_FILE)
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@echo "#" >> $(LIB_DEP_FILE)
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@echo "" >> $(LIB_DEP_FILE)
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@echo "export SPEC_FILES := \\" >> $(LIB_DEP_FILE)
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@for i in $(SPEC_FILES); do \
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echo " $$i \\" >> $(LIB_DEP_FILE); done
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@echo "" >> $(LIB_DEP_FILE)
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@echo "LIB_CACHE_DIR = $(LIB_CACHE_DIR)" >> $(LIB_DEP_FILE)
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@echo "BASE_DIR = $(realpath $(BASE_DIR))" >> $(LIB_DEP_FILE)
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@echo "VERBOSE ?= $(VERBOSE)" >> $(LIB_DEP_FILE)
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@echo "VERBOSE_MK ?= $(VERBOSE_MK)" >> $(LIB_DEP_FILE)
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@echo "VERBOSE_DIR ?= $(VERBOSE_DIR)" >> $(LIB_DEP_FILE)
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@echo "INSTALL_DIR ?= $(INSTALL_DIR)" >> $(LIB_DEP_FILE)
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@echo "SHELL ?= $(SHELL)" >> $(LIB_DEP_FILE)
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@echo "MKDIR ?= mkdir" >> $(LIB_DEP_FILE)
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@echo "" >> $(LIB_DEP_FILE)
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@echo "all:" >> $(LIB_DEP_FILE)
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@echo " @true # prevent nothing-to-be-done message" >> $(LIB_DEP_FILE)
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@echo "" >> $(LIB_DEP_FILE)
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#
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# We check if any target.mk files exist in the specified src directory. If
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# there exist any target.mk files, we revisit each repository and create
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# corresponding rules in the library-dependency file.
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#
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# This stage is executed serially.
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#
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$(dir $(LIB_DEP_FILE)):
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@mkdir -p $@
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VISIT_DST_DIRS = $(addsuffix .visit,$(DST_DIRS))
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.PHONY: $(VISIT_DST_DIRS)
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.NOTPARALLEL: $(VISIT_DST_DIRS)
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$(VISIT_DST_DIRS): $(dir $(LIB_DEP_FILE)) init_libdep_file init_progress_log
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@echo "checking library dependencies for $(@:.visit=)..."
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@test "`$(find_all_src_target_mk)`" != "" ||\
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(echo Error: non-existing target $(@:.visit=); false)
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$(VERBOSE_MK)set -e; for i in $(REPOSITORIES); do \
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for j in `$(find_src_target_mk)`; do \
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$(MAKE) $(VERBOSE_DIR) -f $(BASE_DIR)/mk/dep_prg.mk \
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REP_DIR=$$i TARGET_MK=$$j \
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BUILD_BASE_DIR=$(BUILD_BASE_DIR) \
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SHELL=$(SHELL) \
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DARK_COL="$(DARK_COL)" DEFAULT_COL="$(DEFAULT_COL)"; done; done
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.PHONY: $(LIB_DEP_FILE)
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$(LIB_DEP_FILE): $(VISIT_DST_DIRS)
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##
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## Second stage: build targets based on the result of the first stage
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##
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$(INSTALL_DIR):
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$(VERBOSE)mkdir -p $@
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.PHONY: gen_deps_and_build_targets
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gen_deps_and_build_targets: $(INSTALL_DIR) $(LIB_DEP_FILE)
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@$(VERBOSE_MK)$(MAKE) $(VERBOSE_DIR) -f $(LIB_DEP_FILE) all
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.PHONY: again
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again: $(INSTALL_DIR)
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@$(VERBOSE_MK)$(MAKE) $(VERBOSE_DIR) -f $(LIB_DEP_FILE) all
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##
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## Rules for running automated test cases
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##
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RUN_OPT ?=
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RUN_ENV := $(call select_from_repositories,run/env)
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ifeq ($(RUN_ENV),)
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run: run_no_env
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endif
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run_no_env:
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@echo "Error: There exists no execution environment this platform"
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@false
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# helper for run/% rule
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RUN_SCRIPT = $(call select_from_repositories,run/$*.run)
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#
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# Read tools configuration to obtain the cross-compiler prefix passed
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# to the run script.
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#
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-include $(call select_from_repositories,etc/tools.conf)
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run/%: $(call select_from_repositories,run/%.run) $(RUN_ENV)
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$(VERBOSE)test -f "$(RUN_SCRIPT)" || (echo "Error: No run script for $*"; exit -1)
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$(VERBOSE)$(GENODE_DIR)/tool/run --genode-dir $(GENODE_DIR) \
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--name $* \
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--specs "$(SPECS)" \
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--repositories "$(REPOSITORIES)" \
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--cross-dev-prefix "$(CROSS_DEV_PREFIX)" \
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--qemu-args "$(QEMU_OPT)" \
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--include $(RUN_ENV) $(RUN_OPT) \
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--include $(RUN_SCRIPT)
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##
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## Clean rules
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##
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#
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# For cleaning, visit each directory for that a corresponding target.mk
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# file exists in the source tree. For each such directory, we call
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# the single_target rule.
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#
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clean_targets:
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$(VERBOSE_MK)for d in `$(GNU_FIND) -mindepth 1 -type d | $(TAC) | sed "s/^..//"`; do \
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for r in $(REPOSITORIES); do \
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test -f $$r/src/$$d/target.mk && \
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$(MAKE) $(VERBOSE_DIR) clean \
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-C $$d \
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-f $(BASE_DIR)/mk/prg.mk \
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BUILD_BASE_DIR=$(BUILD_BASE_DIR) \
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PRG_REL_DIR=$$d \
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SHELL=$(SHELL) \
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REP_DIR=$$r || \
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true; \
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done; \
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done
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clean_libcache:
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$(VERBOSE)rm -rf var/libcache
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clean_run:
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$(VERBOSE)rm -rf var/run
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clean_gen_files:
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$(VERBOSE)rm -f $(LIB_PROGRESS_LOG)
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$(VERBOSE)rm -f $(LIB_DEP_FILE)
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clean_install_dir:
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$(VERBOSE)(test -d $(INSTALL_DIR) && find $(INSTALL_DIR) -type l -not -readable -delete) || true
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clean_empty_dirs: clean_targets clean_libcache clean_run clean_gen_files clean_install_dir
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$(VERBOSE)$(GNU_FIND) . -depth -type d -empty -delete
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clean cleanall: clean_empty_dirs
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