kern
annotate Makefile @ 65:e49fdda97607
changed the makefile to only pass "emulation" (-m32 -melf_i386) only when not
running on a i386 system. Also made that work for freebsd too
| author | John Tsiombikas <nuclear@mutantstargoat.com> |
|---|---|
| date | Wed, 05 Oct 2011 02:34:58 +0300 |
| parents | 928b0ebfff4d |
| children | 637efe95d0d1 |
| rev | line source |
|---|---|
| nuclear@65 | 1 ifneq ($(shell uname -m), i386) |
| nuclear@65 | 2 ccemu = -m32 |
| nuclear@65 | 3 |
| nuclear@65 | 4 ifeq ($(shell uname -s), FreeBSD) |
| nuclear@65 | 5 ldemu = elf_i386_fbsd |
| nuclear@65 | 6 else |
| nuclear@65 | 7 ldemu = elf_i386 |
| nuclear@65 | 8 endif |
| nuclear@65 | 9 endif |
| nuclear@65 | 10 |
| nuclear@0 | 11 # collect all of our C and assembly source files |
| nuclear@10 | 12 csrc = $(wildcard src/boot/*.c) $(wildcard src/*.c) $(wildcard src/klibc/*.c) |
| nuclear@10 | 13 asmsrc = $(wildcard src/boot/*.S) $(wildcard src/*.S) $(wildcard src/klibc/*.S) |
| nuclear@7 | 14 dep = $(asmsrc:.S=.d) $(csrc:.c=.d) |
| nuclear@0 | 15 |
| nuclear@0 | 16 # each source file will generate one object file |
| nuclear@2 | 17 obj = $(asmsrc:.S=.o) $(csrc:.c=.o) |
| nuclear@0 | 18 |
| nuclear@0 | 19 CC = gcc |
| nuclear@0 | 20 |
| nuclear@16 | 21 inc = -Isrc -Isrc/klibc -Isrc/boot |
| nuclear@16 | 22 |
| nuclear@0 | 23 # -nostdinc instructs the compiler to ignore standard include directories |
| nuclear@0 | 24 # -m32 instructs the compiler to produce 32bit code (in case we have a 64bit compiler) |
| nuclear@65 | 25 CFLAGS = $(ccemu) -Wall -g -nostdinc -fno-builtin $(inc) |
| nuclear@65 | 26 ASFLAGS = $(ccemu) -g -nostdinc -fno-builtin $(inc) |
| nuclear@0 | 27 |
| nuclear@0 | 28 bin = kernel.elf |
| nuclear@0 | 29 |
| nuclear@0 | 30 # default target: make an ELF binary by linking the object files |
| nuclear@1 | 31 # we need to specify where to assume the text section (code) is going |
| nuclear@1 | 32 # in memory, as well as the kernel entry point (kentry). |
| nuclear@0 | 33 $(bin): $(obj) |
| nuclear@65 | 34 ld $(ldemu) -o $@ -Ttext 0x100000 -e kentry $(obj) -Map link.map |
| nuclear@0 | 35 |
| nuclear@38 | 36 %.s: %.c |
| nuclear@38 | 37 $(CC) $(CFLAGS) -S -o $@ $< |
| nuclear@38 | 38 |
| nuclear@7 | 39 -include $(dep) |
| nuclear@7 | 40 |
| nuclear@7 | 41 %.d: %.c |
| nuclear@7 | 42 @$(CPP) $(CFLAGS) -MM -MT $(@:.d=.o) $< >$@ |
| nuclear@7 | 43 |
| nuclear@7 | 44 %.d: %.S |
| nuclear@7 | 45 @$(CPP) $(ASFLAGS) -MM -MT $(@:.d=.o) $< >$@ |
| nuclear@7 | 46 |
| nuclear@0 | 47 .PHONY: clean |
| nuclear@0 | 48 clean: |
| nuclear@0 | 49 rm -f $(obj) $(bin) |
| nuclear@7 | 50 |
| nuclear@7 | 51 .PHONY: cleandep |
| nuclear@7 | 52 cleandep: |
| nuclear@7 | 53 rm -f $(dep) |