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