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c450ddcb3d
This patch removes possible ambiguities with respect to the naming of kernel-dependent binaries and libraries. It also removes the use of kernel-specific global side effects from the build system. The reach of kernel-specific peculiarities has thereby become limited to the actual users of the respective 'syscall-<kernel>' libraries. Kernel-specific build artifacts are no longer generated at magic places within the build directory (like okl4's includes, or the L4 build directories of L4/Fiasco and Fiasco.OC, or the build directories of various kernels). Instead, such artifacts have been largely moved to the libcache. E.g., the former '<build-dir>/l4/' build directory for the L4 build system resides at '<build-dir>/var/libcache/syscall-foc/build/'. This way, the location is unique to the kernel. Note that various tools are still generated somewhat arbitrarily under '<build-dir>/tool/' as there is no proper formalism for building host tools yet. As the result of this work, it has become possible to use a joint Genode build directory that is usable with all kernels of a given hardware platform. E.g., on x86_32, one can now seamlessly switch between linux, nova, sel4, okl4, fiasco, foc, and pistachio without rebuilding any components except for core, the kernel, the dynamic linker, and the timer driver. At the current stage, such a build directory must still be created manually. A change of the 'create_builddir' tool will follow to make this feature easily available. This patch also simplifies various 'run/boot_dir' plugins by removing the option for an externally hosted kernel. This option remained unused for many years now. Issue #2190
360 lines
11 KiB
Makefile
360 lines
11 KiB
Makefile
#
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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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# CONTRIB_DIR - location of ported 3rd-party source codes
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#
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# REQUIRED_GCC_VERSION - GCC version required for building Genode
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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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BUILD_BASE_DIR := $(CURDIR)
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INSTALL_DIR := $(CURDIR)/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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export CONTRIB_DIR
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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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#
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# Fetch SPECS configuration from all source repositories and the build directory
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#
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SPECS :=
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-include $(foreach REP,$(REPOSITORIES),$(wildcard $(REP)/etc/specs.conf))
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-include $(BUILD_BASE_DIR)/etc/specs.conf
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#
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# \deprecated We include the repository-specific 'specs.conf' once again as the
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# build-dir-local etc/specs.conf (as created by create_builddir)
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# reassigns the 'SPECS' variable instead of appending it.
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# We sort the 'SPECS' to remove duplicates. We should remove this
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# once the old 'create_builddir' arguments are gone.
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#
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-include $(foreach REP,$(REPOSITORIES),$(wildcard $(REP)/etc/specs.conf))
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SPECS := $(sort $(SPECS))
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select_from_repositories = $(firstword $(foreach REP,$(REPOSITORIES),$(wildcard $(REP)/$(1))))
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#
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# Determine the spec files to incorporate into the build configuration from the
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# repositories. Always consider the spec files present in BASE_DIR. This is
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# needed when the build system is invoked from the package-build tool where the
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# repos/base is not present in the list of REPOSITORIES.
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#
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export SPEC_FILES := \
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$(sort $(foreach SPEC,$(SPECS),$(call select_from_repositories,mk/spec/$(SPEC).mk)) \
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$(wildcard $(foreach SPEC,$(SPECS),$(BASE_DIR)/mk/spec/$(SPEC).mk)))
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include $(SPEC_FILES)
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export SPECS
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include $(BASE_DIR)/mk/global.mk
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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 := $(filter-out clean cleanall again run/%,$(MAKECMDGOALS))
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ifeq ($(MAKECMDGOALS),)
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DST_DIRS := *
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endif
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#
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# Tool chain version check
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#
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# Empty DST_DIRS is interpreted as a tool-chain agnostic target, e.g., clean.
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#
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ifneq ($(DST_DIRS),)
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REQUIRED_GCC_VERSION ?= 4.9.2
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GCC_VERSION := $(filter $(REQUIRED_GCC_VERSION) ,$(shell $(CUSTOM_CXX) --version))
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ifneq ($(GCC_VERSION), $(REQUIRED_GCC_VERSION))
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$(error "$(CUSTOM_CXX) version $(REQUIRED_GCC_VERSION) is required")
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endif
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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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## 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: $(dir $(LIB_DEP_FILE))
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@echo "checking library dependencies..."
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@(echo "#"; \
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echo "# Library dependencies for build '$(DST_DIRS)'"; \
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echo "#"; \
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echo ""; \
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echo "export SPEC_FILES := \\"; \
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for i in $(SPEC_FILES); do \
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echo " $$i \\"; done; \
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echo ""; \
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echo "LIB_CACHE_DIR = $(LIB_CACHE_DIR)"; \
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echo "BASE_DIR = $(realpath $(BASE_DIR))"; \
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echo "VERBOSE ?= $(VERBOSE)"; \
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echo "VERBOSE_MK ?= $(VERBOSE_MK)"; \
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echo "VERBOSE_DIR ?= $(VERBOSE_DIR)"; \
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echo "INSTALL_DIR ?= $(INSTALL_DIR)"; \
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echo "SHELL ?= $(SHELL)"; \
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echo "MKDIR ?= mkdir"; \
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echo ""; \
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echo "all:"; \
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echo " @true # prevent nothing-to-be-done message"; \
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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 directories within
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# any of the repositories listed in the 'REPOSITORIES' variable.
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#
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$(dir $(LIB_DEP_FILE)):
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@mkdir -p $@
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#
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# Find all 'target.mk' files located within any of the specified subdirectories
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# ('DST_DIRS') and any repository. The 'sort' is used to remove duplicates.
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#
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TARGETS_TO_VISIT := $(shell find $(wildcard $(REPOSITORIES:=/src)) -false \
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$(foreach DST,$(DST_DIRS), \
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-or -path "*/src/$(DST)/**target.mk" \
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-printf " %P "))
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TARGETS_TO_VISIT := $(sort $(TARGETS_TO_VISIT))
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#
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# Perform sanity check for non-existing targets being specified at the command
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# line.
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#
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MISSING_TARGETS := $(strip \
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$(foreach DST,$(DST_DIRS),\
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$(if $(filter $(DST)/%,$(TARGETS_TO_VISIT)),,$(DST))))
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ifneq ($(MAKECMDGOALS),)
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ifneq ($(MISSING_TARGETS),)
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init_libdep_file: error_missing_targets
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error_missing_targets:
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@for target in $(MISSING_TARGETS); do \
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echo "Error: target '$$target' does not exist"; done
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@false;
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endif
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endif
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#
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# The procedure of collecting library dependencies is realized as a single
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# rule to gain maximum performance. If we invoked a rule for each target,
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# we would need to spawn one additional shell per target, which would take
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# 10-20 percent more time.
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#
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traverse_target_dependencies: $(dir $(LIB_DEP_FILE)) init_libdep_file init_progress_log
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$(VERBOSE_MK) \
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for target in $(TARGETS_TO_VISIT); do \
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for rep in $(REPOSITORIES); do \
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test -f $$rep/src/$$target || continue; \
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$(MAKE) $(VERBOSE_DIR) -f $(BASE_DIR)/mk/dep_prg.mk \
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REP_DIR=$$rep TARGET_MK=$$rep/src/$$target \
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BUILD_BASE_DIR=$(BUILD_BASE_DIR) \
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SHELL=$(SHELL) \
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DARK_COL="$(DARK_COL)" DEFAULT_COL="$(DEFAULT_COL)" || result=false; \
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break; \
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done; \
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done; $$result;
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#
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# Generate content of libdep file if manually building a single library
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# specified via the 'LIB' argument.
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#
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traverse_lib_dependencies: $(dir $(LIB_DEP_FILE)) init_libdep_file init_progress_log
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$(VERBOSE_MK) \
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$(MAKE) $(VERBOSE_DIR) -f $(BASE_DIR)/mk/dep_lib.mk \
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REP_DIR=$$rep LIB=$(LIB) \
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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)"; \
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echo "all: $(LIB).lib" >> $(LIB_DEP_FILE); \
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.PHONY: $(LIB_DEP_FILE)
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#
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# Depending on whether the top-level target is a list of targets or a
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# single library, we populate the LIB_DEP_FILE differently.
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#
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ifeq ($(LIB),)
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$(LIB_DEP_FILE): traverse_target_dependencies
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else
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$(LIB_DEP_FILE): traverse_lib_dependencies
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endif
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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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@(echo ""; \
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echo "ifneq (\$$(MISSING_PORTS),)"; \
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echo "check_ports:"; \
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echo " @echo \"\""; \
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echo " @echo \"Error: Ports not prepared or outdated:\""; \
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echo " @echo \" \$$(sort \$$(MISSING_PORTS))\""; \
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echo " @echo \"\""; \
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echo " @echo \"You can prepare respectively update them as follows:\""; \
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echo " @echo \" $(GENODE_DIR)/tool/ports/prepare_port \$$(sort \$$(MISSING_PORTS))\""; \
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echo " @echo \"\""; \
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echo " @false"; \
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echo "else"; \
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echo "check_ports:"; \
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echo "endif"; \
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echo "") >> $(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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# 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/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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$(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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$(VERBOSE)rm -rf config-00-00-00-00-00-00
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clean_gen_files:
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$(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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