forked from Archive/PX4-Autopilot
170 lines
4.6 KiB
Makefile
170 lines
4.6 KiB
Makefile
#
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# Copyright (c) 2013 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 libraries
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#
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# This makefile is invoked by firmware.mk to build each of the linraries
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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 standard ar archives. Unlike modules,
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# all public symbols in library objects are visible across the entire
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# firmware stack.
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#
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# In general, modules should be preferred to libraries when possible.
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# Libraries may also be pre-built.
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#
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# IMPORTANT NOTE:
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#
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# This makefile assumes it is being invoked in the library's output directory.
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#
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#
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# Variables that can be set by the library's library.mk:
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#
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#
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# SRCS (optional)
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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 library.
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#
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# PREBUILT_LIB (optional)
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#
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# Names the prebuilt library in the source directory that should be
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# linked into the firmware.
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#
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# INCLUDE_DIRS (optional, must be appended, ignored if SRCS not set)
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#
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# The list of directories searched for include files. If non-standard
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# includes (e.g. those from another module) are required, paths to search
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# can be added here.
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#
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#
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#
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# Variables visible to the library's library.mk:
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#
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# CONFIG
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# BOARD
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# LIBRARY_WORK_DIR
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# LIBRARY_LIB
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# LIBRARY_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 ($(LIBRARY_MK),)
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$(error No library makefile specified)
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endif
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$(info %% LIBRARY_MK = $(LIBRARY_MK))
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#
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# Get the board/toolchain config
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#
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include $(PX4_MK_DIR)/$(PX4_TARGET_OS)/board_$(BOARD).mk
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#
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# Get the library's config
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#
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include $(LIBRARY_MK)
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LIBRARY_SRC := $(dir $(LIBRARY_MK))
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$(info % LIBRARY_NAME = $(LIBRARY_NAME))
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$(info % LIBRARY_SRC = $(LIBRARY_SRC))
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$(info % LIBRARY_LIB = $(LIBRARY_LIB))
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$(info % LIBRARY_WORK_DIR = $(LIBRARY_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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# 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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library: $(LIBRARY_LIB)
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ifneq ($(PREBUILT_LIB),)
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VPATH = $(LIBRARY_SRC)
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$(LIBRARY_LIB): $(PREBUILT_LIB) $(GLOBAL_DEPS)
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@$(ECHO) "PREBUILT: $(PREBUILT_LIB)"
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$(Q) $(COPY) $< $@
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else
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##
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## Object files we will generate from sources
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##
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OBJS = $(addsuffix .o,$(SRCS))
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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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vpath %.c $(LIBRARY_SRC)
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$(filter %.c.o,$(OBJS)): %.c.o: %.c $(GLOBAL_DEPS)
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$(call COMPILE,$<,$@)
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vpath %.cpp $(LIBRARY_SRC)
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$(filter %.cpp.o,$(OBJS)): %.cpp.o: %.cpp $(GLOBAL_DEPS)
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$(call COMPILEXX,$<,$@)
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vpath %.S $(LIBRARY_SRC)
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$(filter %.S.o,$(OBJS)): %.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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$(LIBRARY_LIB): $(OBJS) $(GLOBAL_DEPS)
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$(call ARCHIVE,$@,$(OBJS))
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endif
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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) $(LIBRARY_LIB) $(OBJS)
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