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b7bce8a6cf
GNU make has a very interesting quirk: If you set a variable on the command line, any changes to that variable in the Makefile are ignored unless marked with the "override" keyword. Use CFLAGS only for optimization and warning options, and use CPPFLAGS for the dependency and other preprocessor related options. That way packagers can specify their own CFLAGS without breaking the build. As a side benefit, the ich_descriptors_tool Makefile now behaves exactly the same whether called standalone or as part of the main Makefile. Corresponding to flashrom svn r1574. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
63 lines
1.7 KiB
Makefile
63 lines
1.7 KiB
Makefile
#
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# This file is part of the flashrom project.
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#
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# This Makefile works standalone, but it is usually called from the main
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# Makefile in the flashrom directory.
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PROGRAM=ich_descriptors_tool
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EXTRAINCDIRS = ../../ .
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DEPPATH = .dep
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OBJATH = .obj
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SHAREDSRC = ich_descriptors.c
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SHAREDSRCDIR = ../..
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# If your compiler spits out excessive warnings, run make WARNERROR=no
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# You shouldn't have to change this flag.
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WARNERROR ?= yes
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SRC = $(wildcard *.c)
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CC ?= gcc
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# If the user has specified custom CFLAGS, all CFLAGS settings below will be
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# completely ignored by gnumake.
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CFLAGS ?= -Os -Wall -Wshadow
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ifeq ($(TARGET_OS), DOS)
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# DJGPP has odd uint*_t definitions which cause lots of format string warnings.
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CFLAGS += -Wno-format
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endif
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ifeq ($(WARNERROR), yes)
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CFLAGS += -Werror
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endif
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CPPFLAGS += -MMD -MP -MF $(DEPPATH)/$(@F).d
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# enables functions that populate the descriptor structs from plain binary dumps
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CPPFLAGS += -D ICH_DESCRIPTORS_FROM_DUMP
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CPPFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))
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OBJ = $(OBJATH)/$(SRC:%.c=%.o)
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SHAREDOBJ = $(OBJATH)/$(notdir $(SHAREDSRC:%.c=%.o))
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all:$(PROGRAM)$(EXEC_SUFFIX)
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$(OBJ): $(OBJATH)/%.o : %.c
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$(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $<
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# this enables us to share source files without simultaneously sharing .o files
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# with flashrom, which would lead to unexpected results (w/o running make clean)
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$(SHAREDOBJ): $(OBJATH)/%.o : $(SHAREDSRCDIR)/%.c
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$(CC) $(CFLAGS) $(CPPFLAGS) -o $@ -c $<
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$(PROGRAM)$(EXEC_SUFFIX): $(OBJ) $(SHAREDOBJ)
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$(CC) -o $(PROGRAM)$(EXEC_SUFFIX) $(OBJ) $(SHAREDOBJ)
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clean:
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rm -f $(PROGRAM) $(PROGRAM).exe
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rm -rf $(DEPPATH) $(OBJATH)
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# Include the dependency files.
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-include $(shell mkdir -p $(DEPPATH) $(OBJATH) 2>/dev/null) $(wildcard $(DEPPATH)/*)
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.PHONY: all clean
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