limine/stage2/Makefile

CC = i386-elf-gcc
LD = i386-elf-gcc
OBJCOPY = i386-elf-objcopy

WERROR = -Werror
CFLAGS = -flto -Os -pipe -Wall -Wextra $(WERROR)

INTERNAL_CFLAGS = \
	-std=gnu11 \
	-fplan9-extensions \
	-ffreestanding \
	-fno-stack-protector \
	-fno-pic \
	-fomit-frame-pointer \
	-Wno-address-of-packed-member \
	-masm=intel \
	-mno-80387 \
	-mno-mmx \
	-mno-3dnow \
	-mno-sse \
	-mno-sse2 \
	-MMD \
	-I. \
	-I..

LDFLAGS = -flto -Os

INTERNAL_LDFLAGS = \
	-lgcc \
	-static-libgcc \
	-nostdlib \
	-no-pie \
	-z max-page-size=0x1000 \
	-static \
	-Tlinker.ld

.PHONY: all clean

C_FILES := $(shell find ./ -type f -name '*.c' | sort)
ASM_FILES := $(shell find ./ -type f -name '*.asm' | sort)
OBJ := $(ASM_FILES:.asm=.o) $(C_FILES:.c=.o)
HEADER_DEPS := $(C_FILES:.c=.d)

all: stage2.bin

stage2.bin: $(OBJ)
	$(LD) $(OBJ) $(LDFLAGS) $(INTERNAL_LDFLAGS) -o stage2.elf
	$(OBJCOPY) -O binary stage2.elf stage2.bin

-include $(HEADER_DEPS)

%.o: %.c
	$(CC) $(CFLAGS) $(INTERNAL_CFLAGS) -c $< -o $@

%.o: %.asm
	nasm $< -f elf32 -o $@

clean:
	rm -f stage2.bin stage2.elf $(OBJ) $(HEADER_DEPS)
Build gzip and nasm as part of the toolchain to ensure reproducibility 2020-09-18 21:38:59 +02:00			`CC = i386-elf-gcc`
			`LD = i386-elf-gcc`
			`OBJCOPY = i386-elf-objcopy`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00
Add BIOS drive indexing 2020-10-18 06:23:39 +02:00			`WERROR = -Werror`
			`CFLAGS = -flto -Os -pipe -Wall -Wextra $(WERROR)`
Switch back to GCC 2020-09-13 14:36:18 +02:00
Fix issue with int 13h DAP potentially not fitting within a single real mode segment; load stage 2 at 0x8000 and disable LTO as it is broken for some unknown reasons now 2020-09-25 22:36:26 +02:00			`INTERNAL_CFLAGS = \`
Implement acpi_get_table() 2020-09-17 14:37:22 +02:00			`-std=gnu11 \`
			`-fplan9-extensions \`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00			`-ffreestanding \`
Switch back to GCC 2020-09-13 14:36:18 +02:00			`-fno-stack-protector \`
			`-fno-pic \`
Reorganise source tree 2020-09-14 19:32:11 +02:00			`-fomit-frame-pointer \`
Add header dependencies to Makefiles 2020-09-21 12:46:42 +02:00			`-Wno-address-of-packed-member \`
Revert to -masm=intel for inline assembly 2020-09-16 17:22:05 +02:00			`-masm=intel \`
Fix up compile flags 2020-08-24 23:35:06 +02:00			`-mno-80387 \`
			`-mno-mmx \`
Reorganise source tree 2020-09-14 19:32:11 +02:00			`-mno-3dnow \`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00			`-mno-sse \`
			`-mno-sse2 \`
Add header dependencies to Makefiles 2020-09-21 12:46:42 +02:00			`-MMD \`
Resolve most GCC warnings 2020-04-29 16:53:05 +02:00			`-I. \`
Add header dependencies to Makefiles 2020-09-21 12:46:42 +02:00			`-I..`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00
Fix bugs related to handling real mode switch in inline assembly sections; reenable LTO as that fixes it 2020-09-25 22:57:57 +02:00			`LDFLAGS = -flto -Os`
Switch back to GCC 2020-09-13 14:36:18 +02:00
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00			`INTERNAL_LDFLAGS = \`
Switch back to GCC 2020-09-13 14:36:18 +02:00			`-lgcc \`
			`-static-libgcc \`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00			`-nostdlib \`
Switch back to GCC 2020-09-13 14:36:18 +02:00			`-no-pie \`
Fix issue with int 13h DAP potentially not fitting within a single real mode segment; load stage 2 at 0x8000 and disable LTO as it is broken for some unknown reasons now 2020-09-25 22:36:26 +02:00			`-z max-page-size=0x1000 \`
Switch back to GCC 2020-09-13 14:36:18 +02:00			`-static \`
			`-Tlinker.ld`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00
			`.PHONY: all clean`

Reorganise source tree 2020-09-14 19:32:11 +02:00			`C_FILES := $(shell find ./ -type f -name '*.c' \| sort)`
			`ASM_FILES := $(shell find ./ -type f -name '*.asm' \| sort)`
Switch back to GCC 2020-09-13 14:36:18 +02:00			`OBJ := $(ASM_FILES:.asm=.o) $(C_FILES:.c=.o)`
Add header dependencies to Makefiles 2020-09-21 12:46:42 +02:00			`HEADER_DEPS := $(C_FILES:.c=.d)`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00
Add header dependencies to Makefiles 2020-09-21 12:46:42 +02:00			`all: stage2.bin`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00
Add header dependencies to Makefiles 2020-09-21 12:46:42 +02:00			`stage2.bin: $(OBJ)`
Switch back to GCC 2020-09-13 14:36:18 +02:00			`$(LD) $(OBJ) $(LDFLAGS) $(INTERNAL_LDFLAGS) -o stage2.elf`
Ship reproducible prebuilt bootloader and make 'make all' only build limine-install 2020-09-13 15:20:53 +02:00			`$(OBJCOPY) -O binary stage2.elf stage2.bin`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00
Add header dependencies to Makefiles 2020-09-21 12:46:42 +02:00			`-include $(HEADER_DEPS)`

Switch back to GCC 2020-09-13 14:36:18 +02:00			`%.o: %.c`
			`$(CC) $(CFLAGS) $(INTERNAL_CFLAGS) -c $< -o $@`
Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00
Enable lto and move naked assembly functions to own files 2020-09-04 01:37:24 +02:00			`%.o: %.asm`
			`nasm $< -f elf32 -o $@`

Add make toolchain script and reorganise source tree 2020-01-21 23:45:13 +01:00			`clean:`
Fix up make clean 2020-10-04 00:01:05 +02:00			`rm -f stage2.bin stage2.elf $(OBJ) $(HEADER_DEPS)`