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Makefile
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# Versioning information
#
VERSION := v2.8.0
SBAT_GENERATION := 1
# Abstract target-independent objects
#
OBJECTS := prefix.o startup.o callback.o main.o vsprintf.o string.o peloader.o
OBJECTS += int13.o vdisk.o cpio.o stdio.o lznt1.o xca.o die.o efi.o efimain.o
OBJECTS += efiguid.o efifile.o efipath.o efiboot.o efiblock.o cmdline.o
OBJECTS += wimpatch.o huffman.o lzx.o wim.o wimfile.o pause.o sha1.o cookie.o
OBJECTS += paging.o memmap.o
# Target-dependent objects
#
OBJECTS_i386 := $(patsubst %.o,%.i386.o,$(OBJECTS))
OBJECTS_x86_64 := $(patsubst %.o,%.x86_64.o,$(OBJECTS))
OBJECTS_i386_x86_64 := $(patsubst %.o,%.i386.x86_64.o,$(OBJECTS))
OBJECTS_arm64 := $(patsubst %.o,%.arm64.o,$(OBJECTS))
# Header files
#
HEADERS := $(wildcard *.h)
# Common build tools
#
ECHO ?= echo
CP ?= cp
RM ?= rm
GCAB ?= gcab
PESIGN ?= pesign
DIFF ?= diff
GREP ?= grep
XARGS ?= xargs
CUT ?= cut
CC ?= cc
AS ?= as
LD ?= ld
AR ?= ar
OBJCOPY ?= objcopy
# Build tools for host binaries
#
HOST_CC := $(CC)
# Get list of default compiler definitions
#
CCDEFS := $(shell $(CC) -E -x c -c /dev/null -dM | $(CUT) -d" " -f2)
# Detect compiler type
#
ifeq ($(filter __clang__,$(CCDEFS)),__clang__)
CC_i386 ?= $(CC) -target i386
CC_x86_64 ?= $(CC) -target x86_64
CC_arm64 ?= $(CC) -target aarch64
CFLAGS += -Wno-unused-command-line-argument
else ifeq ($(filter __GNUC__,$(CCDEFS)),__GNUC__)
CC := gcc
endif
# Guess appropriate cross-compilation prefixes
#
ifneq ($(filter __x86_64__,$(CCDEFS)),__x86_64__)
CROSS_x86_64 ?= x86_64-linux-gnu-
endif
ifneq ($(filter __aarch64__,$(CCDEFS)),__aarch64__)
CROSS_arm64 ?= aarch64-linux-gnu-
endif
CROSS_i386 ?= $(CROSS_x86_64)
# Build tools for i386 target
#
CC_i386 ?= $(CROSS_i386)$(CC)
AS_i386 ?= $(CROSS_i386)$(AS)
LD_i386 ?= $(CROSS_i386)$(LD)
AR_i386 ?= $(CROSS_i386)$(AR)
OBJCOPY_i386 ?= $(CROSS_i386)$(OBJCOPY)
# Build tools for x86_64 target
#
CC_x86_64 ?= $(CROSS_x86_64)$(CC)
AS_x86_64 ?= $(CROSS_x86_64)$(AS)
LD_x86_64 ?= $(CROSS_x86_64)$(LD)
AR_x86_64 ?= $(CROSS_x86_64)$(AR)
OBJCOPY_x86_64 ?= $(CROSS_x86_64)$(OBJCOPY)
# Build tools for arm64 target
#
CC_arm64 ?= $(CROSS_arm64)$(CC)
AS_arm64 ?= $(CROSS_arm64)$(AS)
LD_arm64 ?= $(CROSS_arm64)$(LD)
AR_arm64 ?= $(CROSS_arm64)$(AR)
OBJCOPY_arm64 ?= $(CROSS_arm64)$(OBJCOPY)
# Build flags for host binaries
#
HOST_CFLAGS += -Wall -W -Werror
# Build flags for all targets
#
CFLAGS += -Os -ffreestanding -Wall -W -Werror
CFLAGS += -nostdinc -I. -fshort-wchar
CFLAGS += -DVERSION="\"$(VERSION)\""
CFLAGS += -DSBAT_GENERATION="\"$(SBAT_GENERATION)\""
CFLAGS += -include compiler.h
ifneq ($(DEBUG),)
CFLAGS += -DDEBUG=$(DEBUG)
endif
CFLAGS += $(EXTRA_CFLAGS)
LDFLAGS += --no-relax
# Build flags for i386 target
#
CFLAGS_i386 := -m32 -march=i386 -malign-double -fno-pic
ASFLAGS_i386 := --32
LDFLAGS_i386 := -m elf_i386
# Build flags for x86_64 target
#
CFLAGS_x86_64 := -m64 -mno-red-zone -fpie
ASFLAGS_x86_64 := --64
LDFLAGS_x86_64 := -m elf_x86_64
# Build flags for arm64 target
#
CFLAGS_arm64 := -mlittle-endian -mcmodel=small -fno-pic
ASFLAGS_arm64 := -mabi=lp64 -EL
# Run a test compilation and discard any output
#
CC_TEST = $(CC_$(1)) $(CFLAGS) $(CFLAGS_$(1)) \
-x c -c - -o /dev/null >/dev/null 2>&1
# Test for supported compiler flags
#
CFLAGS_TEST = $(shell $(CC_TEST) $(2) </dev/null && $(ECHO) '$(2)')
# Enable stack protection if available
#
CFLAGS_SPG = $(call CFLAGS_TEST,$(1),-fstack-protector-strong \
-mstack-protector-guard=global)
# Inhibit unwanted debugging information
#
CFLAGS_CFI = $(call CFLAGS_TEST,$(1),-fno-dwarf2-cfi-asm \
-fno-exceptions \
-fno-unwind-tables \
-fno-asynchronous-unwind-tables)
# Inhibit warnings from taking address of packed struct members
#
CFLAGS_WNAPM = $(call CFLAGS_TEST,$(1),-Wno-address-of-packed-member)
# Inhibit spurious warnings from array bounds checking
#
CFLAGS_WNAB = $(call CFLAGS_TEST,$(1),-Wno-array-bounds)
# Inhibit LTO
#
CFLAGS_NLTO = $(call CFLAGS_TEST,$(1),-fno-lto)
# Inhibit address-significance table
#
CFLAGS_NAS = $(call CFLAGS_TEST,$(1),-fno-addrsig)
# Add -maccumulate-outgoing-args if required
#
MS_ABI_TEST_CODE := extern void __attribute__ (( ms_abi )) ms_abi(); \
void sysv_abi ( void ) { ms_abi(); }
define CFLAGS_MS_ABI
$(shell $(CC_TEST) -maccumulate-outgoing-args </dev/null && \
( $(ECHO) '$(MS_ABI_TEST_CODE)' | \
$(CC_TEST) -mno-accumulate-outgoing-args || \
$(ECHO) '-maccumulate-outgoing-args' ))
endef
# Conditional build flags
#
CFLAGS_COND = $(CFLAGS_SPG) $(CFLAGS_CFI) $(CFLAGS_WNAPM) $(CFLAGS_WNAB) \
$(CFLAGS_NLTO) $(CFLAGS_NAS) $(CFLAGS_MS_ABI)
CFLAGS_i386 += $(call CFLAGS_COND,i386)
CFLAGS_x86_64 += $(call CFLAGS_COND,x86_64)
CFLAGS_arm64 += $(call CFLAGS_COND,arm64)
###############################################################################
#
# Final targets
all : wimboot wimboot.i386 wimboot.x86_64 wimboot.arm64 wimboot.cab
wimboot : wimboot.x86_64 Makefile
$(CP) $< $@
$(CP) $@ ../$@
wimboot.%.elf : lib.%.a script.lds Makefile
$(LD_$*) $(LDFLAGS) $(LDFLAGS_$*) -T script.lds -o $@ -q \
-Map wimboot.$*.map prefix.$*.o lib.$*.a
wimboot.i386.unsigned : \
wimboot.%.unsigned : wimboot.%.elf elf2efi32 Makefile
./elf2efi32 --hybrid $< $@
wimboot.x86_64.unsigned wimboot.arm64.unsigned : \
wimboot.%.unsigned : wimboot.%.elf elf2efi64 Makefile
./elf2efi64 --hybrid $< $@
wimboot.%.unsigned.hash : wimboot.%.unsigned Makefile
$(PESIGN) -h -i $< | $(XARGS) -n 1 $(ECHO) | $(GREP) -x '[0-9a-f]*' > $@
wimboot.%.efi : wimboot.%.unsigned Makefile
$(CP) $< $@
wimboot.%.efi.hash : wimboot.%.efi Makefile
$(PESIGN) -h -i $< | $(XARGS) -n 1 $(ECHO) | $(GREP) -x '[0-9a-f]*' > $@
wimboot.% : wimboot.%.efi wimboot.%.efi.hash wimboot.%.unsigned.hash Makefile
$(DIFF) wimboot.$*.efi.hash wimboot.$*.unsigned.hash
$(CP) $< $@
wimboot.cab : wimboot.i386.efi wimboot.x86_64.efi wimboot.arm64.efi Makefile
$(GCAB) -n -c $@ wimboot.i386.efi wimboot.x86_64.efi wimboot.arm64.efi
###############################################################################
#
# i386 objects
%.i386.s : %.S $(HEADERS) Makefile
$(CC_i386) $(CFLAGS) $(CFLAGS_i386) -DASSEMBLY -Ui386 -E $< -o $@
%.i386.s : %.c $(HEADERS) Makefile
$(CC_i386) $(CFLAGS) $(CFLAGS_i386) -S $< -o $@
%.i386.o : %.i386.s i386.i Makefile
$(AS_i386) $(ASFLAGS) $(ASFLAGS_i386) i386.i $< -o $@
lib.i386.a : $(OBJECTS_i386) Makefile
$(RM) -f $@
$(AR_i386) -r -s $@ $(OBJECTS_i386)
###############################################################################
#
# i386 objects to be linked into an x86_64 binary
%.i386.x86_64.raw.o : %.i386.s i386.i Makefile
$(AS_x86_64) $(ASFLAGS) $(ASFLAGS_x86_64) i386.i $< -o $@
%.i386.x86_64.o : %.i386.x86_64.raw.o Makefile
$(OBJCOPY_x86_64) --prefix-symbols=__i386_ $< $@
###############################################################################
#
# x86_64 objects
%.x86_64.s : %.S $(HEADERS) Makefile
$(CC_x86_64) $(CFLAGS) $(CFLAGS_x86_64) -DASSEMBLY -Ui386 -E $< -o $@
%.x86_64.s : %.c $(HEADERS) Makefile
$(CC_x86_64) $(CFLAGS) $(CFLAGS_x86_64) -S $< -o $@
%.x86_64.o : %.x86_64.s x86_64.i Makefile
$(AS_x86_64) $(ASFLAGS) $(ASFLAGS_x86_64) x86_64.i $< -o $@
lib.x86_64.a : $(OBJECTS_x86_64) $(OBJECTS_i386_x86_64) Makefile
$(RM) -f $@
$(AR_x86_64) -r -s $@ $(OBJECTS_x86_64) $(OBJECTS_i386_x86_64)
###############################################################################
#
# arm64 objects
%.arm64.s : %.S $(HEADERS) Makefile
$(CC_arm64) $(CFLAGS) $(CFLAGS_arm64) -DASSEMBLY -E $< -o $@
%.arm64.s : %.c $(HEADERS) Makefile
$(CC_arm64) $(CFLAGS) $(CFLAGS_arm64) -S $< -o $@
%.arm64.o : %.arm64.s Makefile
$(AS_arm64) $(ASFLAGS) $(ASFLAGS_arm64) $< -o $@
lib.arm64.a : $(OBJECTS_arm64) Makefile
$(RM) -f $@
$(AR_arm64) -r -s $@ $(OBJECTS_arm64)
###############################################################################
#
# EFI relocator
elf2efi32 : elf2efi.c Makefile
$(HOST_CC) $(HOST_CFLAGS) -idirafter . -DEFI_TARGET32 $< -o $@
elf2efi64 : elf2efi.c Makefile
$(HOST_CC) $(HOST_CFLAGS) -idirafter . -DEFI_TARGET64 $< -o $@
###############################################################################
#
# Cleanup
clean :
$(RM) -f *.s *.o *.a *.elf *.map
$(RM) -f elf2efi32 elf2efi64
$(RM) -f wimboot.i386 wimboot.i386.*
$(RM) -f wimboot.x86_64 wimboot.x86_64.*
$(RM) -f wimboot.arm64 wimboot.arm64.*
$(RM) -f wimboot wimboot.cab
.DELETE_ON_ERROR :