kern
annotate Makefile @ 38:e6f75f91e606
- added makefile pattern to produce assembly output from c source files.
- removed a commented out previous version of the gmtime_r function in klibc/time.c
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Fri, 10 Jun 2011 23:19:25 +0300 |
| parents | 2cbc2b922e49 |
| children | 928b0ebfff4d |
| rev | line source |
|---|---|
| nuclear@0 | 1 # collect all of our C and assembly source files |
| nuclear@10 | 2 csrc = $(wildcard src/boot/*.c) $(wildcard src/*.c) $(wildcard src/klibc/*.c) |
| nuclear@10 | 3 asmsrc = $(wildcard src/boot/*.S) $(wildcard src/*.S) $(wildcard src/klibc/*.S) |
| nuclear@7 | 4 dep = $(asmsrc:.S=.d) $(csrc:.c=.d) |
| nuclear@0 | 5 |
| nuclear@0 | 6 # each source file will generate one object file |
| nuclear@2 | 7 obj = $(asmsrc:.S=.o) $(csrc:.c=.o) |
| nuclear@0 | 8 |
| nuclear@0 | 9 CC = gcc |
| nuclear@0 | 10 |
| nuclear@16 | 11 inc = -Isrc -Isrc/klibc -Isrc/boot |
| nuclear@16 | 12 |
| nuclear@0 | 13 # -nostdinc instructs the compiler to ignore standard include directories |
| nuclear@0 | 14 # -m32 instructs the compiler to produce 32bit code (in case we have a 64bit compiler) |
| nuclear@38 | 15 CFLAGS = -O0 -m32 -Wall -g -nostdinc -fno-builtin $(inc) |
| nuclear@16 | 16 ASFLAGS = -m32 -g -nostdinc -fno-builtin $(inc) |
| nuclear@0 | 17 |
| nuclear@0 | 18 bin = kernel.elf |
| nuclear@0 | 19 |
| nuclear@0 | 20 # default target: make an ELF binary by linking the object files |
| nuclear@1 | 21 # we need to specify where to assume the text section (code) is going |
| nuclear@1 | 22 # in memory, as well as the kernel entry point (kentry). |
| nuclear@0 | 23 $(bin): $(obj) |
| nuclear@10 | 24 ld -melf_i386 -o $@ -Ttext 0x100000 -e kentry $(obj) -Map link.map |
| nuclear@0 | 25 |
| nuclear@38 | 26 %.s: %.c |
| nuclear@38 | 27 $(CC) $(CFLAGS) -S -o $@ $< |
| nuclear@38 | 28 |
| nuclear@7 | 29 -include $(dep) |
| nuclear@7 | 30 |
| nuclear@7 | 31 %.d: %.c |
| nuclear@7 | 32 @$(CPP) $(CFLAGS) -MM -MT $(@:.d=.o) $< >$@ |
| nuclear@7 | 33 |
| nuclear@7 | 34 %.d: %.S |
| nuclear@7 | 35 @$(CPP) $(ASFLAGS) -MM -MT $(@:.d=.o) $< >$@ |
| nuclear@7 | 36 |
| nuclear@0 | 37 .PHONY: clean |
| nuclear@0 | 38 clean: |
| nuclear@0 | 39 rm -f $(obj) $(bin) |
| nuclear@7 | 40 |
| nuclear@7 | 41 .PHONY: cleandep |
| nuclear@7 | 42 cleandep: |
| nuclear@7 | 43 rm -f $(dep) |