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8b9b41fd50
Implement __EXPORT and such for modules, as well as symbol visibility. Don't use UNZIP to point to unzip, as it looks there for arguments.
225 lines
7.1 KiB
Makefile
225 lines
7.1 KiB
Makefile
#
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# Copyright (C) 2012 PX4 Development Team. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name PX4 nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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#
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# Framework makefile for PX4 modules
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#
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# This makefile is invoked by firmware.mk to build each of the modules
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# that will subsequently be linked into the firmware image.
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#
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# Applications are built as prelinked objects with a limited set of exported
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# symbols, as the global namespace is shared between all modules. Normally an
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# module will just export one or more <command>_main functions.
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#
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#
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# Variables that can be set by the module's module.mk:
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#
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#
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# SRCS (required)
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#
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# Lists the .c, cpp and .S files that should be compiled/assembled to
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# produce the module.
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#
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# MODULE_COMMAND (optional)
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# MODULE_ENTRYPOINT (optional if MODULE_COMMAND is set)
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# MODULE_STACKSIZE (optional if MODULE_COMMAND is set)
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# MODULE_PRIORITY (optional if MODULE_COMMAND is set)
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#
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# Defines a single builtin command exported by the module.
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# MODULE_COMMAND must be unique for any configuration, but need not be the
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# same as the module directory name.
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#
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# If MODULE_ENTRYPOINT is set, it names the function (which must be exported)
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# that will be the entrypoint for the builtin command. It defaults to
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# $(MODULE_COMMAND)_main.
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#
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# If MODULE_STACKSIZE is set, it is the size in bytes of the stack to be
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# allocated for the builtin command. If it is not set, it defaults
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# to CONFIG_PTHREAD_STACK_DEFAULT.
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#
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# If MODULE_PRIORITY is set, it is the thread priority for the builtin
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# command. If it is not set, it defaults to SCHED_PRIORITY_DEFAULT.
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#
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# MODULE_COMMANDS (optional if MODULE_COMMAND is not set)
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#
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# Defines builtin commands exported by the module. Each word in
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# the list should be formatted as:
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# <command>.<priority>.<stacksize>.<entrypoint>
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#
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# DEFAULT_VISIBILITY (optional)
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#
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# If not set, global symbols defined in a module will not be visible
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# outside the module. Symbols that should be globally visible must be
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# marked __EXPORT.
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# If set, global symbols defined in a module will be globally visible.
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#
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#
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# Variables visible to the module's module.mk:
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#
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# CONFIG
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# BOARD
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# MODULE_WORK_DIR
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# MODULE_OBJ
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# MODULE_MK
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# Anything set in setup.mk, board_$(BOARD).mk and the toolchain file.
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# Anything exported from config_$(CONFIG).mk
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#
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################################################################################
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# No user-serviceable parts below.
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################################################################################
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ifeq ($(MODULE_MK),)
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$(error No module makefile specified)
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endif
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$(info % MODULE_MK = $(MODULE_MK))
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#
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# Get the board/toolchain config
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#
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include $(PX4_MK_DIR)/board_$(BOARD).mk
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#
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# Get the module's config
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#
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include $(MODULE_MK)
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MODULE_SRC := $(dir $(MODULE_MK))
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$(info % MODULE_NAME = $(MODULE_NAME))
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$(info % MODULE_SRC = $(MODULE_SRC))
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$(info % MODULE_OBJ = $(MODULE_OBJ))
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$(info % MODULE_WORK_DIR = $(MODULE_WORK_DIR))
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#
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# Things that, if they change, might affect everything
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#
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GLOBAL_DEPS += $(MAKEFILE_LIST)
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################################################################################
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# Builtin command definitions
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################################################################################
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ifneq ($(MODULE_COMMAND),)
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MODULE_ENTRYPOINT ?= $(MODULE_COMMAND)_main
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MODULE_STACKSIZE ?= CONFIG_PTHREAD_STACK_DEFAULT
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MODULE_PRIORITY ?= SCHED_PRIORITY_DEFAULT
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MODULE_COMMANDS += $(MODULE_COMMAND).$(MODULE_PRIORITY).$(MODULE_STACKSIZE).$(MODULE_ENTRYPOINT)
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endif
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ifneq ($(MODULE_COMMANDS),)
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MODULE_COMMAND_FILES := $(addprefix $(WORK_DIR)/builtin_commands/COMMAND.,$(MODULE_COMMANDS))
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# Create the command files
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# Ensure that there is only one entry for each command
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#
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.PHONY: $(MODULE_COMMAND_FILES)
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$(MODULE_COMMAND_FILES): command = $(word 2,$(subst ., ,$(notdir $(@))))
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$(MODULE_COMMAND_FILES): exclude = $(dir $@)COMMAND.$(command).*
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$(MODULE_COMMAND_FILES): $(GLOBAL_DEPS)
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@$(ECHO) COMMAND: $(command)
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@$(REMOVE) -f $(exclude)
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@$(MKDIR) -p $(dir $@)
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$(Q) $(TOUCH) $@
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endif
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################################################################################
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# Adjust compilation flags to implement EXPORT
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################################################################################
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ifeq ($(DEFAULT_VISIBILITY),)
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DEFAULT_VISIBILITY = hidden
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else
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DEFAULT_VISIBILITY = default
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endif
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CFLAGS += -fvisibility=$(DEFAULT_VISIBILITY) -include $(PX4_INCLUDE_DIR)visibility.h
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CXXFLAGS += -fvisibility=$(DEFAULT_VISIBILITY) -include $(PX4_INCLUDE_DIR)visibility.h
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################################################################################
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# Build rules
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################################################################################
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#
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# What we're going to build
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#
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module: $(MODULE_OBJ) $(MODULE_COMMAND_FILES)
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#
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# Locate sources (allows relative source paths in module.mk)
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#
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define SRC_SEARCH
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$(abspath $(firstword $(wildcard $(MODULE_SRC)/$1) MISSING_$1))
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endef
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ABS_SRCS := $(foreach src,$(SRCS),$(call SRC_SEARCH,$(src)))
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MISSING_SRCS := $(subst MISSING_,,$(filter MISSING_%,$(ABS_SRCS)))
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ifneq ($(MISSING_SRCS),)
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$(error $(MODULE_MK): missing in SRCS: $(MISSING_SRCS))
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endif
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ifeq ($(ABS_SRCS),)
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$(error $(MODULE_MK): nothing to compile in SRCS)
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endif
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#
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# Object files we will generate from sources
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#
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OBJS := $(foreach src,$(ABS_SRCS),$(MODULE_WORK_DIR)$(src).o)
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#
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# SRCS -> OBJS rules
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#
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$(OBJS): $(GLOBAL_DEPS)
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$(filter %.c.o,$(OBJS)): $(MODULE_WORK_DIR)%.c.o: %.c $(GLOBAL_DEPS)
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$(call COMPILE,$<,$@)
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$(filter %.cpp.o,$(OBJS)): $(MODULE_WORK_DIR)%.cpp.o: %.cpp $(GLOBAL_DEPS)
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$(call COMPILEXX,$<,$@)
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$(filter %.S.o,$(OBJS)): $(MODULE_WORK_DIR)%.S.o: %.S $(GLOBAL_DEPS)
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$(call ASSEMBLE,$<,$@)
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#
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# Built product rules
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#
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$(MODULE_OBJ): $(OBJS) $(GLOBAL_DEPS)
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$(call PRELINK,$@,$(OBJS))
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#
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# Utility rules
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#
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clean:
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$(Q) $(REMOVE) $(MODULE_PRELINK) $(OBJS)
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