108 lines
3.2 KiB
Makefile
108 lines
3.2 KiB
Makefile
## -*- makefile -*- -------------------------------------------------------
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##
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## Copyright 2008 H. Peter Anvin - All Rights Reserved
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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## Boston MA 02110-1301, USA; either version 2 of the License, or
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## (at your option) any later version; incorporated herein by reference.
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##
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## -----------------------------------------------------------------------
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##
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## ELF common configurables
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##
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include $(MAKEDIR)/syslinux.mk
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# Support IA32 and x86_64 platforms with one build
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# Set up architecture specifics; for cross compilation, set ARCH as apt
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GCCOPT := $(call gcc_ok,-std=gnu99,)
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ifeq ($(ARCH),i386)
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GCCOPT += $(call gcc_ok,-m32,)
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GCCOPT += $(call gcc_ok,-march=i386)
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GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,)
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endif
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ifeq ($(ARCH),x86_64)
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GCCOPT += $(call gcc_ok,-m64,)
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GCCOPT += $(call gcc_ok,-march=x86-64)
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#let preferred-stack-boundary be default (=4)
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endif
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GCCOPT += -Os -fomit-frame-pointer
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GCCOPT += $(call gcc_ok,-fno-stack-protector,)
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GCCOPT += $(call gcc_ok,-fwrapv,)
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GCCOPT += $(call gcc_ok,-freg-struct-return,)
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GCCOPT += $(call gcc_ok,-fno-exceptions,)
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GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,)
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# Note -fPIE does not work with ld on x86_64, try -fPIC instead
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# Does BIOS build depend on -fPIE?
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GCCOPT += $(call gcc_ok,-fPIC)
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GCCOPT += $(call gcc_ok,-falign-functions=0,-malign-functions=0)
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GCCOPT += $(call gcc_ok,-falign-jumps=0,-malign-jumps=0)
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GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0)
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GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0)
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com32 = $(topdir)/com32
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core = $(topdir)/core
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ifneq ($(NOGPL),1)
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GPLLIB = $(objdir)/com32/gpllib/libgpl.c32
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GPLINCLUDE = -I$(com32)/gplinclude
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else
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GPLLIB =
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GPLINCLUDE =
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endif
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CFLAGS = $(GCCOPT) $(GCCWARN) -W -Wall \
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-fomit-frame-pointer -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ -DDYNAMIC_MODULE \
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-nostdinc -iwithprefix include \
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-I$(com32)/libutil/include -I$(com32)/include \
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-I$(com32)/include/sys $(GPLINCLUDE) -I$(core)/include \
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-I$(objdir) -DLDLINUX=\"$(LDLINUX)\"
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ifndef EFI_BUILD
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CFLAGS += -mregparm=3 -DREGPARM=3
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endif
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SFLAGS = $(GCCOPT) -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__
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LDFLAGS = -m elf_$(ARCH) -shared --hash-style=gnu -T $(com32)/lib/$(ARCH)/elf.ld --as-needed
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LIBGCC := $(shell $(CC) $(GCCOPT) --print-libgcc)
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LNXCFLAGS = -I$(com32)/libutil/include -W -Wall -O -g -D_GNU_SOURCE
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LNXSFLAGS = -g
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LNXLDFLAGS = -g
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C_LIBS += $(objdir)/com32/libutil/libutil.c32 $(GPLLIB) \
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$(objdir)/com32/lib/libcom32.c32
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C_LNXLIBS = $(objdir)/com32/libutil/libutil_lnx.a \
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$(objdir)/com32/elflink/ldlinux/ldlinux_lnx.a
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.SUFFIXES: .lss .c .o
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.PRECIOUS: %.o
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%.o: %.S
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$(CC) $(SFLAGS) -c -o $@ $<
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.PRECIOUS: %.o
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%.o: %.c
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$(CC) $(CFLAGS) -c -o $@ $<
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.PRECIOUS: %.lo
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%.lo: %.S
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$(CC) $(LNXSFLAGS) -c -o $@ $<
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.PRECIOUS: %.lo
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%.lo: %.c
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$(CC) $(LNXCFLAGS) -c -o $@ $<
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.PRECIOUS: %.lnx
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%.lnx: %.lo $(LNXLIBS) $(C_LNXLIBS)
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$(CC) $(LNXCFLAGS) -o $@ $^
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.PRECIOUS: %.elf
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%.elf: %.o $(C_LIBS)
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$(LD) $(LDFLAGS) -o $@ $^
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%.c32: %.elf
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$(OBJCOPY) --strip-debug --strip-unneeded $< $@
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