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Switch to Clang

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Clang can cross-compile to PE and is easier to setup than MinGW.
This commit is contained in:
Lauri Kenttä
2023-11-20 16:05:52 +02:00
parent 4379f9cbeb
commit 24c7e2b316
2 changed files with 13 additions and 10 deletions
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21
Makefile
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@@ -1,9 +1,10 @@
CC = $(CC_PREFIX)-gcc
CFLAGS = -std=c11 -O2 -ffreestanding -mno-red-zone -fno-stack-protector -Wshadow -Wall -Wunused -Werror-implicit-function-declaration -Werror
CC = clang
CFLAGS = -target $(CLANG_TARGET) -ffreestanding -fshort-wchar -mno-red-zone
CFLAGS += -std=c17 -O2 -Wshadow -Wall -Wunused -Werror-implicit-function-declaration
CFLAGS += -I$(GNUEFI_INC) -I$(GNUEFI_INC)/$(GNUEFI_ARCH) -I$(GNUEFI_INC)/protocol
LDFLAGS = -nostdlib -shared -Wl,-dll -Wl,--subsystem,10 -e efi_main -s
LDFLAGS = -target $(CLANG_TARGET) -nostdlib -Wl,-entry:efi_main -Wl,-subsystem:efi_application -fuse-ld=lld
GNUEFI_INC = /usr/$(CC_PREFIX)/include/efi
GNUEFI_INC = gnu-efi/inc
FILES_C = src/main.c src/util.c src/types.c src/config.c src/sbat.c src/efi.c
FILES_H = $(wildcard src/*.h)
@@ -13,11 +14,13 @@ CFLAGS += '-DGIT_DESCRIBE_W=L"$(GIT_DESCRIBE)"' '-DGIT_DESCRIBE="$(GIT_DESCRIBE)
ZIPDIR = HackBGRT-$(GIT_DESCRIBE:v%=%)
ZIP = $(ZIPDIR).zip
EFI_ARCH_LIST = x64 ia32
.PHONY: all efi efi-signed setup zip clean
all: efi setup
efi: efi/bootx64.efi efi/bootia32.efi
efi-signed: efi-signed/bootx64.efi efi-signed/bootia32.efi
efi: $(patsubst %,efi/boot%.efi,$(EFI_ARCH_LIST))
efi-signed: $(patsubst %,efi-signed/boot%.efi,$(EFI_ARCH_LIST))
setup: setup.exe
zip: $(ZIP)
@@ -53,16 +56,16 @@ efi-signed/%.efi: efi/%.efi
efi-signed/bootx64.efi: pki
efi-signed/bootia32.efi: pki
efi/bootx64.efi: CC_PREFIX = x86_64-w64-mingw32
efi/bootx64.efi: CLANG_TARGET = x86_64-pc-windows-msvc
efi/bootx64.efi: GNUEFI_ARCH = x86_64
efi/bootx64.efi: $(FILES_C)
@mkdir -p efi
$(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@
efi/bootia32.efi: CC_PREFIX = i686-w64-mingw32
efi/bootia32.efi: CLANG_TARGET = i386-pc-windows-msvc
efi/bootia32.efi: GNUEFI_ARCH = ia32
efi/bootia32.efi: $(FILES_C)
@mkdir -p efi
@mkdir -p build
$(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@
clean:

2
README.md
View File

@@ -84,6 +84,6 @@ If something breaks and you can't boot to Windows, you need to use the Windows i
## Building
* Compiler: GCC targeting w64-mingw32
* Compiler: Clang
* Compiler flags: see Makefile
* Libraries: gnu-efi