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Makefile: Make it build out-of-the-box on macOS

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This requires a few dependencies installed with Homebrew.

Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2021-11-08 13:52:59 +09:00
parent a4e922ecaf
commit 1e6c856f5f
2 changed files with 36 additions and 12 deletions
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39
Makefile
View file

@ -1,15 +1,30 @@
ARCH := aarch64-linux-gnu- ARCH ?= aarch64-linux-gnu-
ifeq ($(shell uname),Darwin)
USE_CLANG ?= 1
$(info INFO: Building on Darwin)
ifeq ($(shell uname -p),arm)
TOOLCHAIN ?= /opt/homebrew/opt/llvm/bin/
else
TOOLCHAIN ?= /usr/local/opt/llvm/bin/
endif
$(info INFO: Toolchain path: $(TOOLCHAIN))
endif
ifeq ($(USE_CLANG),1) ifeq ($(USE_CLANG),1)
CC := clang --target=$(ARCH) CC := $(TOOLCHAIN)clang --target=$(ARCH)
AS := clang --target=$(ARCH) AS := $(TOOLCHAIN)clang --target=$(ARCH)
LD := ld.lld LD := $(TOOLCHAIN)ld.lld
OBJCOPY := llvm-objcopy OBJCOPY := $(TOOLCHAIN)llvm-objcopy
CLANG_FORMAT := $(TOOLCHAIN)clang-format
EXTRA_CFLAGS ?=
else else
CC := $(ARCH)gcc CC := $(TOOLCHAIN)$(ARCH)gcc
AS := $(ARCH)gcc AS := $(TOOLCHAIN)$(ARCH)gcc
LD := $(ARCH)ld LD := $(TOOLCHAIN)$(ARCH)ld
OBJCOPY := $(ARCH)objcopy OBJCOPY := $(TOOLCHAIN)$(ARCH)objcopy
CLANG_FORMAT := clang-format
EXTRA_CFLAGS ?= -Wstack-usage=1024
endif endif
CFLAGS := -O2 -Wall -g -Wundef -Werror=strict-prototypes -fno-common -fno-PIE \ CFLAGS := -O2 -Wall -g -Wundef -Werror=strict-prototypes -fno-common -fno-PIE \
@ -18,7 +33,7 @@ CFLAGS := -O2 -Wall -g -Wundef -Werror=strict-prototypes -fno-common -fno-PIE \
-ffreestanding -fpic -ffunction-sections -fdata-sections \ -ffreestanding -fpic -ffunction-sections -fdata-sections \
-nostdinc -isystem $(shell $(CC) -print-file-name=include) -isystem sysinc \ -nostdinc -isystem $(shell $(CC) -print-file-name=include) -isystem sysinc \
-fno-stack-protector -mgeneral-regs-only -mstrict-align -march=armv8.2-a \ -fno-stack-protector -mgeneral-regs-only -mstrict-align -march=armv8.2-a \
-Wstack-usage=1024 $(EXTRA_CFLAGS)
LDFLAGS := -T m1n1.ld -EL -maarch64elf --no-undefined -X -Bsymbolic \ LDFLAGS := -T m1n1.ld -EL -maarch64elf --no-undefined -X -Bsymbolic \
-z notext --no-apply-dynamic-relocs --orphan-handling=warn \ -z notext --no-apply-dynamic-relocs --orphan-handling=warn \
@ -87,9 +102,9 @@ all: build/$(TARGET) $(DTBS)
clean: clean:
rm -rf build/* rm -rf build/*
format: format:
clang-format -i src/*.c src/*.h sysinc/*.h $(CLANG_FORMAT) -i src/*.c src/*.h sysinc/*.h
format-check: format-check:
clang-format --dry-run --Werror src/*.c src/*.h sysinc/*.h $(CLANG_FORMAT) --dry-run --Werror src/*.c src/*.h sysinc/*.h
build/dtb/%.dts: dts/%.dts build/dtb/%.dts: dts/%.dts
@echo " DTCPP $@" @echo " DTCPP $@"

9
README.md
View file

@ -17,6 +17,15 @@ The output will be in build/m1n1.macho.
To build on a native arm64 machine, use `make ARCH=`. To build on a native arm64 machine, use `make ARCH=`.
Building on ARM64 macOS is supported with clang and LLVM; you need to use Homebrew to
install the required dependencies:
```shell
$ brew install llvm imagemagick dtc
```
After that, just type `make`.
### Building using the container setup ### Building using the container setup
If you have a container runtime installed, like Podman or Docker, you can make use of the compose setup, which contains all build dependencies. If you have a container runtime installed, like Podman or Docker, you can make use of the compose setup, which contains all build dependencies.