| 1 | #
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| 2 | # Copyright (c) 2006 Martin Decky
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| 3 | # All rights reserved.
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| 4 | #
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| 5 | # Redistribution and use in source and binary forms, with or without
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| 6 | # modification, are permitted provided that the following conditions
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| 7 | # are met:
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| 8 | #
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| 9 | # - Redistributions of source code must retain the above copyright
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| 10 | # notice, this list of conditions and the following disclaimer.
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| 11 | # - Redistributions in binary form must reproduce the above copyright
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| 12 | # notice, this list of conditions and the following disclaimer in the
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| 13 | # documentation and/or other materials provided with the distribution.
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| 14 | # - The name of the author may not be used to endorse or promote products
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| 15 | # derived from this software without specific prior written permission.
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| 16 | #
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| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | #
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| 28 |
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| 29 | .PHONY: all clean depend
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| 30 |
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| 31 | include Makefile.common
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| 32 |
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| 33 | INCLUDES = -Igeneric/include -Iarch/$(KARCH)/include -Igenarch/include -I$(ROOT_PATH)/abi/arch/$(KARCH)/include -I$(ROOT_PATH)/abi/include
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| 34 | OPTIMIZATION = 3
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| 35 |
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| 36 | DEFS = -DBOOT -DRELEASE=$(RELEASE) "-DCOPYRIGHT=$(COPYRIGHT)" "-DNAME=$(NAME)" -D__$(BITS)_BITS__ -D__$(ENDIANESS)__
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| 37 |
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| 38 | AFLAGS = --fatal-warnings
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| 39 | LDFLAGS = -Wl,--fatal-warnings,--warn-common
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| 40 |
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| 41 | COMMON_CFLAGS = $(INCLUDES) -O$(OPTIMIZATION) -imacros $(CONFIG_HEADER) \
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| 42 | -ffreestanding -nostdlib \
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| 43 | -fexec-charset=UTF-8 -finput-charset=UTF-8 -fno-common \
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| 44 | -fdebug-prefix-map=$(realpath $(ROOT_PATH))=.
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| 45 |
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| 46 | GCC_CFLAGS = -Wall -Wextra -Wno-unused-parameter -Wmissing-prototypes \
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| 47 | -std=gnu99 -Werror-implicit-function-declaration -Wwrite-strings \
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| 48 | -pipe
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| 49 |
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| 50 | CLANG_CFLAGS = -Wall -Wextra -Wno-unused-parameter -Wmissing-prototypes \
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| 51 | -Werror-implicit-function-declaration -Wwrite-strings \
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| 52 | -pipe -fno-stack-protector -fno-PIC
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| 53 |
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| 54 | ifeq ($(CONFIG_DEBUG),y)
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| 55 | COMMON_CFLAGS += -Werror
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| 56 | endif
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| 57 |
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| 58 | ifeq ($(CONFIG_LINE_DEBUG),y)
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| 59 | COMMON_CFLAGS += -g
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| 60 | endif
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| 61 |
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| 62 | ifeq ($(COMPILER),clang)
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| 63 | CFLAGS = $(COMMON_CFLAGS) $(CLANG_CFLAGS) $(EXTRA_CFLAGS)
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| 64 | else
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| 65 | CFLAGS = $(COMMON_CFLAGS) $(GCC_CFLAGS) $(EXTRA_CFLAGS)
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| 66 | endif
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| 67 |
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| 68 | OBJECTS := $(addsuffix .o,$(basename $(SOURCES)))
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| 69 | DEPENDS := $(addsuffix .d,$(basename $(SOURCES)))
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| 70 |
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| 71 | ifeq ($(CONFIG_COMPRESSED_INIT),y)
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| 72 | COMPONENTS := $(addsuffix .gz, $(COMPONENTS))
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| 73 | endif
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| 74 |
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| 75 | all: $(VERSION_DEF) $(COMMON_MAKEFILE) $(COMMON_HEADER) $(CONFIG_MAKEFILE) $(CONFIG_HEADER) $(BOOT_OUTPUT)
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| 76 |
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| 77 | clean:
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| 78 | rm -f $(RAW) $(MAP)
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| 79 |
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| 80 | -include $(DEPENDS)
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| 81 |
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| 82 | AS_CFLAGS := $(addprefix -Xassembler ,$(AFLAGS))
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| 83 |
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| 84 | $(BOOT_OUTPUT): $(RAW)
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| 85 | $(OBJCOPY) -O $(BFD_OUTPUT) $< $@
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| 86 |
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| 87 | $(RAW): $(OBJECTS) $(LINK)
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| 88 | $(CC) $(CFLAGS) -Wl,-n $(LDFLAGS) -T $(LINK) -Wl,-M,-Map,$(MAP) -o $@ $(OBJECTS)
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| 89 |
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| 90 | $(LINK): | depend
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| 91 | $(CC) $(DEFS) $(CFLAGS) -D__ASSEMBLER__ -D__LINKER__ -E -x c $(LINK).in | grep -v "^\#" > $(LINK)
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| 92 |
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| 93 | %.o: %.s | depend
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| 94 | $(CC_JOB) -c -MD -MP $(DEFS) $(CFLAGS) $(AS_CFLAGS)
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| 95 |
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| 96 | %.o: %.S | depend
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| 97 | $(CC_JOB) -c -MD -MP $(DEFS) $(CFLAGS) $(AS_CFLAGS)
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| 98 |
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| 99 | %.o: %.c | depend
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| 100 | $(CC_JOB) -c -MD -MP $(DEFS) $(CFLAGS)
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| 101 |
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| 102 | depend: $(PRE_DEPEND)
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| 103 |
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| 104 | %.gz: %
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| 105 | gzip -n -k -f $<
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| 106 |
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| 107 | $(COMPS).tar: $(COMPONENTS)
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| 108 | tar --mtime='2032-01-01 00:00:00' --group=0 --owner=0 --no-acls --no-selinux --no-xattrs --format=ustar --transform 's/.*\///g' -cvf $@ $^
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| 109 |
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| 110 | $(COMPS).o: $(COMPS).tar
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| 111 | # Create empty object file.
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| 112 | $(CC) -x c -c -o $@.new $(DEFS) $(CFLAGS) - </dev/null
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| 113 | # Add .payload section to it.
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| 114 | $(OBJCOPY) --add-section '.payload'=$< $@.new $@
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| 115 |
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| 116 | include Makefile.initrd
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