#
# Copyright (c) 2012, 2013 PX4 Development Team. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name PX4 nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
#
# Framework makefile for PX4 modules
#
# This makefile is invoked by firmware.mk to build each of the modules
# that will subsequently be linked into the firmware image.
#
# Modules are built as prelinked objects with a limited set of exported
# symbols, as the global namespace is shared between all modules. Normally an
# module will just export one or more <command>_main functions.
#
# IMPORTANT NOTE:
#
# This makefile assumes it is being invoked in the module's output directory.
#
#
# Variables that can be set by the module's module.mk:
#
#
# SRCS (required)
#
# Lists the .c, cpp and .S files that should be compiled/assembled to
# produce the module.
#
# MODULE_COMMAND (optional)
# MODULE_ENTRYPOINT (optional if MODULE_COMMAND is set)
# MODULE_STACKSIZE (optional if MODULE_COMMAND is set)
# MODULE_PRIORITY (optional if MODULE_COMMAND is set)
#
# Defines a single builtin command exported by the module.
# MODULE_COMMAND must be unique for any configuration, but need not be the
# same as the module directory name.
#
# If MODULE_ENTRYPOINT is set, it names the function (which must be exported)
# that will be the entrypoint for the builtin command. It defaults to
# $(MODULE_COMMAND)_main.
#
# If MODULE_STACKSIZE is set, it is the size in bytes of the stack to be
# allocated for the builtin command. If it is not set, it defaults
# to CONFIG_PTHREAD_STACK_DEFAULT.
#
# If MODULE_PRIORITY is set, it is the thread priority for the builtin
# command. If it is not set, it defaults to SCHED_PRIORITY_DEFAULT.
#
# MODULE_COMMANDS (optional if MODULE_COMMAND is not set)
#
# Defines builtin commands exported by the module. Each word in
# the list should be formatted as:
# <command>.<priority>.<stacksize>.<entrypoint>
#
# INCLUDE_DIRS (optional, must be appended)
#
# The list of directories searched for include files. If non-standard
# includes (e.g. those from another module) are required, paths to search
# can be added here.
#
# DEFAULT_VISIBILITY (optional)
#
# If not set, global symbols defined in a module will not be visible
# outside the module. Symbols that should be globally visible must be
# marked __EXPORT.
# If set, global symbols defined in a module will be globally visible.
#
#
# Variables visible to the module's module.mk:
#
# CONFIG
# BOARD
# BOARD_FILE
# MODULE_WORK_DIR
# MODULE_OBJ
# MODULE_MK
# Anything set in setup.mk, board_$(BOARD).mk and the toolchain file.
# Anything exported from config_$(CONFIG).mk
#
################################################################################
# No user-serviceable parts below.
################################################################################
ifeq ($(MODULE_MK),)
$(error No module makefile specified)
endif
$(info %% MODULE_MK = $(MODULE_MK))
#
# Get the board/toolchain config
#
include $(BOARD_FILE)
#
# Get the module's config
#
include $(MODULE_MK)
MODULE_SRC := $(dir $(MODULE_MK))
$(info % MODULE_NAME = $(MODULE_NAME))
$(info % MODULE_SRC = $(MODULE_SRC))
$(info % MODULE_OBJ = $(MODULE_OBJ))
$(info % MODULE_WORK_DIR = $(MODULE_WORK_DIR))
#
# Things that, if they change, might affect everything
#
GLOBAL_DEPS += $(MAKEFILE_LIST)
################################################################################
# Builtin command definitions
################################################################################
ifneq ($(MODULE_COMMAND),)
MODULE_ENTRYPOINT ?= $(MODULE_COMMAND)_main
MODULE_STACKSIZE ?= CONFIG_PTHREAD_STACK_DEFAULT
MODULE_PRIORITY ?= SCHED_PRIORITY_DEFAULT
MODULE_COMMANDS += $(MODULE_COMMAND).$(MODULE_PRIORITY).$(MODULE_STACKSIZE).$(MODULE_ENTRYPOINT)
endif
ifneq ($(MODULE_COMMANDS),)
MODULE_COMMAND_FILES := $(addprefix $(WORK_DIR)/builtin_commands/COMMAND.,$(MODULE_COMMANDS))
# Create the command files
# Ensure that there is only one entry for each command
#
.PHONY: $(MODULE_COMMAND_FILES)
$(MODULE_COMMAND_FILES): command = $(word 2,$(subst ., ,$(notdir $(@))))
$(MODULE_COMMAND_FILES): exclude = $(dir $@)COMMAND.$(command).*
$(MODULE_COMMAND_FILES): $(GLOBAL_DEPS)
@$(REMOVE) -f $(exclude)
@$(MKDIR) -p $(dir $@)
@$(ECHO) "CMD: $(command)"
$(Q) $(TOUCH) $@
endif
################################################################################
# Adjust compilation flags to implement EXPORT
################################################################################
ifeq ($(DEFAULT_VISIBILITY),)
DEFAULT_VISIBILITY = hidden
else
DEFAULT_VISIBILITY = default
endif
CFLAGS += -fvisibility=$(DEFAULT_VISIBILITY) -include $(PX4_INCLUDE_DIR)visibility.h
CXXFLAGS += -fvisibility=$(DEFAULT_VISIBILITY) -include $(PX4_INCLUDE_DIR)visibility.h
################################################################################
# Build rules
################################################################################
#
# What we're going to build
#
module: $(MODULE_OBJ) $(MODULE_COMMAND_FILES)
#
# Object files we will generate from sources
#
OBJS = $(addsuffix .o,$(SRCS))
#
# Dependency files that will be auto-generated
#
DEPS = $(addsuffix .d,$(SRCS))
#
# SRCS -> OBJS rules
#
$(OBJS): $(GLOBAL_DEPS)
vpath %.c $(MODULE_SRC)
$(filter %.c.o,$(OBJS)): %.c.o: %.c $(GLOBAL_DEPS)
$(call COMPILE,$<,$@)
vpath %.cpp $(MODULE_SRC)
$(filter %.cpp.o,$(OBJS)): %.cpp.o: %.cpp $(GLOBAL_DEPS)
$(call COMPILEXX,$<,$@)
vpath %.S $(MODULE_SRC)
$(filter %.S.o,$(OBJS)): %.S.o: %.S $(GLOBAL_DEPS)
$(call ASSEMBLE,$<,$@)
#
# Built product rules
#
$(MODULE_OBJ): $(OBJS) $(GLOBAL_DEPS)
$(call PRELINK,$@,$(OBJS))
#
# Utility rules
#
clean:
$(Q) $(REMOVE) $(MODULE_PRELINK) $(OBJS)
-include $(DEPS)
