182184567e
This change adds two options (Debug/Release) for optimization level. Debug enables -O0, release enables -Os and adds -DNDEBUG (which removes all assert() statements). Debugging symbols are kept in both cases, although we may add an option to strip output file if necessary. Also we used to define all common compiler flags in CPPFLAGS, and then appended them to CFLAGS/CXXFLAGS. It makes it impossible to add preprocessor macros to CPPFLAGS at component level (one has to use CFLAGS/CXXFLAGS instead). Some third party libraries are not compatible with this approach. Changed to the more common way of using these variables.
111 lines
4.8 KiB
Makefile
111 lines
4.8 KiB
Makefile
# Component common makefile
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#
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# This Makefile gets included in the Makefile of all the components to set the correct include paths etc.
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# PWD is the build directory of the component and the top Makefile is the one in the
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# component source dir.
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#
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# The way the Makefile differentiates between those two is by looking at the environment
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# variable PROJECT_PATH. If this is set (to the basepath of the project), we're building a
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# component and its Makefile has included this makefile. If not, we're building the entire project.
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#
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#
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# This Makefile requires the environment variable IDF_PATH to be set
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# to the top-level directory where ESP-IDF is located (the directory
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# containing this 'make' directory).
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#
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ifeq ("$(PROJECT_PATH)","")
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$(error Make was invoked from $(CURDIR). However please do not run make from the sdk or a component directory; invoke make from the project directory. See the ESP-IDF README for details.)
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endif
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# Find the path to the component
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COMPONENT_PATH := $(abspath $(dir $(firstword $(MAKEFILE_LIST))))
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export COMPONENT_PATH
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include $(IDF_PATH)/make/common.mk
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#Some of these options are overridable by the component's component.mk Makefile
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#Name of the component
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COMPONENT_NAME ?= $(lastword $(subst /, ,$(realpath $(COMPONENT_PATH))))
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#Absolute path of the .a file
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COMPONENT_LIBRARY := lib$(COMPONENT_NAME).a
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#Source dirs a component has. Default to root directory of component.
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COMPONENT_SRCDIRS ?= .
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#Object files which need to be linked into the library
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#By default we take all .c/.S files in the component directory.
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ifeq ("$(COMPONENT_OBJS)", "")
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#Find all source files in all COMPONENT_SRCDIRS
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COMPONENT_OBJS := $(foreach compsrcdir,$(COMPONENT_SRCDIRS),$(patsubst %.c,%.o,$(wildcard $(COMPONENT_PATH)/$(compsrcdir)/*.c)))
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COMPONENT_OBJS += $(foreach compsrcdir,$(COMPONENT_SRCDIRS),$(patsubst %.cpp,%.o,$(wildcard $(COMPONENT_PATH)/$(compsrcdir)/*.cpp)))
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COMPONENT_OBJS += $(foreach compsrcdir,$(COMPONENT_SRCDIRS),$(patsubst %.S,%.o,$(wildcard $(COMPONENT_PATH)/$(compsrcdir)/*.S)))
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#Make relative by removing COMPONENT_PATH from all found object paths
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COMPONENT_OBJS := $(patsubst $(COMPONENT_PATH)/%,%,$(COMPONENT_OBJS))
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endif
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#By default, include only the include/ dir.
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COMPONENT_ADD_INCLUDEDIRS ?= include
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COMPONENT_ADD_LDFLAGS ?= -l$(COMPONENT_NAME)
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#If we're called to compile something, we'll get passed the COMPONENT_INCLUDES
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#variable with all the include dirs from all the components in random order. This
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#means we can accidentally grab a header from another component before grabbing our own.
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#To make sure that does not happen, re-order the includes so ours come first.
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OWN_INCLUDES:=$(abspath $(addprefix $(COMPONENT_PATH)/,$(COMPONENT_ADD_INCLUDEDIRS) $(COMPONENT_PRIV_INCLUDEDIRS)))
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COMPONENT_INCLUDES := $(OWN_INCLUDES) $(filter-out $(OWN_INCLUDES),$(COMPONENT_INCLUDES))
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#This target is used to collect variable values from inside project.mk
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# see project.mk GetVariable macro for details.
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get_variable:
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@echo "$(GET_VARIABLE)=$(call $(GET_VARIABLE)) "
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#Targets for build/clean. Use builtin recipe if component Makefile
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#hasn't defined its own.
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ifeq ("$(COMPONENT_OWNBUILDTARGET)", "")
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build: $(COMPONENT_LIBRARY)
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@mkdir -p $(COMPONENT_SRCDIRS)
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#Build the archive. We remove the archive first, otherwise ar will get confused if we update
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#an archive when multiple filenames have the same name (src1/test.o and src2/test.o)
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$(COMPONENT_LIBRARY): $(COMPONENT_OBJS)
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$(summary) AR $@
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$(Q) rm -f $@
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$(Q) $(AR) cru $@ $(COMPONENT_OBJS)
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endif
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ifeq ("$(COMPONENT_OWNCLEANTARGET)", "")
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clean:
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$(summary) RM $(COMPONENT_LIBRARY) $(COMPONENT_OBJS) $(COMPONENT_OBJS:.o=.d) $(COMPONENT_EXTRA_CLEAN)
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$(Q) rm -f $(COMPONENT_LIBRARY) $(COMPONENT_OBJS) $(COMPONENT_OBJS:.o=.d) $(COMPONENT_EXTRA_CLEAN)
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endif
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#Include all dependency files already generated
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-include $(COMPONENT_OBJS:.o=.d)
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#This pattern is generated for each COMPONENT_SRCDIR to compile the files in it.
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define GenerateCompileTargets
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# $(1) - directory containing source files, relative to $(COMPONENT_PATH)
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$(1)/%.o: $$(COMPONENT_PATH)/$(1)/%.c | $(1)
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$$(summary) CC $$@
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$$(Q) $$(CC) $$(CFLAGS) $(CPPFLAGS) $$(addprefix -I ,$$(COMPONENT_INCLUDES)) $$(addprefix -I ,$$(COMPONENT_EXTRA_INCLUDES)) -I$(1) -c $$< -o $$@
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$(1)/%.o: $$(COMPONENT_PATH)/$(1)/%.cpp | $(1)
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$$(summary) CXX $$@
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$$(Q) $$(CXX) $$(CXXFLAGS) $(CPPFLAGS) $$(addprefix -I,$$(COMPONENT_INCLUDES)) $$(addprefix -I,$$(COMPONENT_EXTRA_INCLUDES)) -I$(1) -c $$< -o $$@
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$(1)/%.o: $$(COMPONENT_PATH)/$(1)/%.S | $(1)
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$$(summary) AS $$@
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$$(Q) $$(CC) $$(CFLAGS) $(CPPFLAGS) $$(addprefix -I ,$$(COMPONENT_INCLUDES)) $$(addprefix -I ,$$(COMPONENT_EXTRA_INCLUDES)) -I$(1) -c $$< -o $$@
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# CWD is build dir, create the build subdirectory if it doesn't exist
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$(1):
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@mkdir -p $(1)
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endef
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#Generate all the compile target recipes
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$(foreach srcdir,$(COMPONENT_SRCDIRS), $(eval $(call GenerateCompileTargets,$(srcdir))))
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