mirror of https://github.com/ipxe/ipxe.git
121 lines
3.0 KiB
Makefile
121 lines
3.0 KiB
Makefile
# Force i386-only instructions
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#
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CFLAGS += -march=i386
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# Code size reduction.
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#
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CFLAGS += -fomit-frame-pointer
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# Code size reduction.
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#
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ifeq ($(CCTYPE),gcc)
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CFLAGS += -fstrength-reduce
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endif
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# Code size reduction. gcc3 needs a different syntax to gcc2 if you
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# want to avoid spurious warnings.
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#
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ifeq ($(CCTYPE),gcc)
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GCC_VERSION := $(subst ., ,$(shell $(CC) -dumpversion))
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GCC_MAJOR := $(firstword $(GCC_VERSION))
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ifeq ($(GCC_MAJOR),2)
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CFLAGS += -malign-jumps=1 -malign-loops=1 -malign-functions=1
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else
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CFLAGS += -falign-jumps=1 -falign-loops=1 -falign-functions=1
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endif # gcc2
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endif # gcc
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# Code size reduction. This is almost always a win. The kernel uses
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# it, too.
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#
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ifeq ($(CCTYPE),gcc)
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CFLAGS += -mpreferred-stack-boundary=2
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endif
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# Code size reduction. Use regparm for all functions - C functions
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# called from assembly (or vice versa) need __asmcall now
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#
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CFLAGS += -mregparm=3
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# Code size reduction. Use -mrtd (same __asmcall requirements as above)
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ifeq ($(CCTYPE),gcc)
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CFLAGS += -mrtd
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endif
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# Code size reduction. This is the logical complement to -mregparm=3.
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# It doesn't currently buy us anything, but if anything ever tries to
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# return small structures, let's be prepared
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#
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CFLAGS += -freg-struct-return
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# Force 32-bit code even on an x86-64 machine
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#
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CFLAGS += -m32
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ASFLAGS += --32
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ifeq ($(HOST_OS),FreeBSD)
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LDFLAGS += -m elf_i386_fbsd
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else
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LDFLAGS += -m elf_i386
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endif
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# EFI requires -fshort-wchar, and nothing else currently uses wchar_t
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#
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CFLAGS += -fshort-wchar
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# We need to undefine the default macro "i386" when compiling .S
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# files, otherwise ".arch i386" translates to ".arch 1"...
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#
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CFLAGS += -Ui386
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# Locations of utilities
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#
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ISOLINUX_BIN = /usr/lib/syslinux/isolinux.bin
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# i386-specific directories containing source files
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#
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SRCDIRS += arch/i386/core arch/i386/transitions arch/i386/prefix
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SRCDIRS += arch/i386/firmware/pcbios
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SRCDIRS += arch/i386/image
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SRCDIRS += arch/i386/drivers
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SRCDIRS += arch/i386/drivers/net
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SRCDIRS += arch/i386/interface/pcbios
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SRCDIRS += arch/i386/interface/pxe
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SRCDIRS += arch/i386/interface/syslinux
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# The various xxx_loader.c files are #included into core/loader.c and
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# should not be compiled directly.
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#
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NON_AUTO_SRCS += arch/i386/core/aout_loader.c
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NON_AUTO_SRCS += arch/i386/core/freebsd_loader.c
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NON_AUTO_SRCS += arch/i386/core/wince_loader.c
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# unnrv2b.S is used to generate a 16-bit as well as a 32-bit object.
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#
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OBJS_unnrv2b = unnrv2b unnrv2b16
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CFLAGS_unnrv2b16 = -DCODE16
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# Include common x86 Makefile
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#
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MAKEDEPS += arch/x86/Makefile
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include arch/x86/Makefile
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# Include platform-specific Makefile
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#
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MAKEDEPS += arch/i386/Makefile.$(PLATFORM)
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include arch/i386/Makefile.$(PLATFORM)
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# Some suffixes (e.g. %.fd0) are generated directly from other
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# finished files (e.g. %.dsk), rather than having their own prefix.
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# rule to write disk images to /dev/fd0
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NON_AUTO_MEDIA += fd0
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%fd0 : %dsk
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$(QM)$(ECHO) " [DD] $@"
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$(Q)dd if=$< bs=512 conv=sync of=/dev/fd0
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$(Q)sync
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# Add NON_AUTO_MEDIA to the media list, so that they show up in the
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# output of "make"
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#
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MEDIA += $(NON_AUTO_MEDIA)
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