| 1 | #
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| 2 | # Copyright (C) 2005 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 | ## Make some default assumptions
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| 30 | #
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| 31 |
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| 32 | ifndef ARCH
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| 33 | ARCH = ia32
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| 34 | endif
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| 35 |
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| 36 | ## Common compiler flags
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| 37 | #
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| 38 |
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| 39 | DEFS = -DARCH=$(ARCH)
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| 40 | CFLAGS = -fno-builtin -fomit-frame-pointer -Werror-implicit-function-declaration -Wmissing-prototypes -Werror -O3 -nostdlib -nostdinc -Ilibc/include
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| 41 | LFLAGS = -M
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| 42 | AFLAGS =
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| 43 |
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| 44 | ## Setup platform configuration
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| 45 | #
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| 46 |
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| 47 | include libc/arch/$(ARCH)/Makefile.inc
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| 48 |
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| 49 | ## Toolchain configuration
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| 50 | #
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| 51 |
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| 52 | ifeq ($(COMPILER),native)
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| 53 | CC = gcc
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| 54 | AS = as
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| 55 | LD = ld
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| 56 | OBJCOPY = objcopy
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| 57 | OBJDUMP = objdump
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| 58 | else
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| 59 | CC = $(TOOLCHAIN_DIR)/$(TARGET)-gcc
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| 60 | AS = $(TOOLCHAIN_DIR)/$(TARGET)-as
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| 61 | LD = $(TOOLCHAIN_DIR)/$(TARGET)-ld
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| 62 | OBJCOPY = $(TOOLCHAIN_DIR)/$(TARGET)-objcopy
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| 63 | OBJDUMP = $(TOOLCHAIN_DIR)/$(TARGET)-objdump
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| 64 | endif
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| 65 |
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| 66 | .PHONY: all clean
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| 67 |
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| 68 | all: init
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| 69 |
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| 70 | clean:
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| 71 | -rm -f init init.map _link.ld *.o
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| 72 | $(MAKE) -C libc clean
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| 73 |
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| 74 | libc/libc.a:
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| 75 | $(MAKE) -C libc all
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| 76 |
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| 77 | _link.ld: _link.ld.in
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| 78 | $(CC) $(DEFS) $(CFLAGS) -E -x c $< | grep -v "^\#" > $@
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| 79 |
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| 80 | init: init.o libc/libc.a _link.ld
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| 81 | $(LD) -T _link.ld $(LFLAGS) init.o libc/libc.a -o $@ -Map init.map
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| 82 |
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| 83 | %.o: %.S
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| 84 | $(CC) $(DEFS) $(AFLAGS) $(CFLAGS) -D__ASM__ -c $< -o $@
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| 85 |
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| 86 | %.o: %.s
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| 87 | $(AS) $(AFLAGS) $< -o $@
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| 88 |
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| 89 | %.o: %.c
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| 90 | $(CC) $(DEFS) $(CFLAGS) -c $< -o $@
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