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| author | Trammell hudson <hudson@trmm.net> | 2020-03-13 15:13:58 +0100 |
|---|---|---|
| committer | Trammell hudson <hudson@trmm.net> | 2020-03-13 15:17:48 +0100 |
| commit | 53d75d1d68be75afd87c58e0d7cb145f801a9182 (patch) | |
| tree | bbd8b48e40d1acf543e0d34e1007a210ea8d7cdb | |
| parent | bb7e95989e998bba3e5a58fb97dfb0c41eef23f9 (diff) | |
| download | qboot-53d75d1d68be75afd87c58e0d7cb145f801a9182.zip qboot-53d75d1d68be75afd87c58e0d7cb145f801a9182.tar.gz qboot-53d75d1d68be75afd87c58e0d7cb145f801a9182.tar.bz2 | |
makefile: add dependency tracking and output directory
Signed-off-by: Trammell hudson <hudson@trmm.net>
| -rw-r--r-- | Makefile | 58 |
1 files changed, 38 insertions, 20 deletions
@@ -1,8 +1,14 @@ CC ?= $(CROSS)gcc AS ?= $(CROSS)gcc OBJCOPY ?= $(CROSS)objcopy +O ?= build -CFLAGS := \ +all: $O/bios.bin +ROMSIZE = 65536 + +$O: ; mkdir -p $@ + +CFLAGS = \ -W \ -Wall \ -m32 \ @@ -15,30 +21,19 @@ CFLAGS := \ -minline-all-stringops \ -fno-pic \ -Iinclude \ + -MT $@ \ + -MMD -MP \ + -MF $O/$*.d \ -ASFLAGS := $(CFLAGS) +ASFLAGS = $(CFLAGS) -LDFLAGS := \ +LDFLAGS = \ -nostdlib \ -m32 \ -Wl,--build-id=none \ -Wl,-Tflat.lds \ -all: bios.bin - -%.bin: %.elf - $(OBJCOPY) \ - -O binary \ - -j .text \ - -j .data \ - -j .rodata \ - -j .bss \ - -j .data \ - -j .init \ - $< \ - $@ - -OBJS := \ +OBJS = \ code16.o \ code32seg.o \ cstart.o \ @@ -55,8 +50,31 @@ OBJS := \ smbios.o \ tables.o \ -bios.elf: $(OBJS) +$O/bios.elf: $(addprefix $O/,$(OBJS)) $(CC) $(LDFLAGS) -o $@ $^ +$O/%.bin: $O/%.elf + $(OBJCOPY) \ + -O binary \ + -j .text \ + -j .rodata \ + -j .data \ + -j .bss \ + -j .init \ + $< \ + "$@.tmp" + @if [ `stat -c '%s' "$@.tmp"` != $(ROMSIZE) ]; then \ + echo >&2 '$@ != $(ROMSIZE) bytes!' ; \ + exit 1 ; \ + fi + mv "$@.tmp" "$@" + +$O/%.o: %.c | $O + $(CC) $(CFLAGS) -c -o $@ $< +$O/%.o: %.S | $O + $(CC) $(ASFLAGS) -c -o $@ $< + clean: - $(RM) *.o bios.bin bios.bin.elf .*.d + $(RM) $O/*.o $O/bios.bin $O/bios.bin.elf $O/*.d + +-include $O/*.d |