1## -*- makefile -*- ------------------------------------------------------- 2## 3## Copyright 2008-2009 H. Peter Anvin - All Rights Reserved 4## Copyright 2009 Intel Corporation; author: H. Peter Anvin 5## 6## This program is free software; you can redistribute it and/or modify 7## it under the terms of the GNU General Public License as published by 8## the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 9## Boston MA 02110-1301, USA; either version 2 of the License, or 10## (at your option) any later version; incorporated herein by reference. 11## 12## ----------------------------------------------------------------------- 13 14## 15## COM32 common configurables 16## 17 18include $(MAKEDIR)/syslinux.mk 19 20# Support IA32 and x86_64 platforms with one build 21# Set up architecture specifics; for cross compilation, set ARCH as apt 22GCCOPT := $(call gcc_ok,-std=gnu99,) 23ifeq ($(strip $(ARCH)),i386) 24 GCCOPT += $(call gcc_ok,-m32,) 25 GCCOPT += $(call gcc_ok,-march=i386) 26 GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,) 27 GCCOPT += $(call gcc_ok,-incoming-stack-boundary=2,) 28endif 29ifeq ($(strip $(ARCH)),x86_64) 30 GCCOPT += $(call gcc_ok,-m64,) 31 GCCOPT += $(call gcc_ok,-march=x86-64) 32 #let the stack-boundary default to whatever it is on 64bit 33 #GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=8,) 34 #GCCOPT += $(call gcc_ok,-incoming-stack-boundary=8,) 35endif 36GCCOPT += $(call gcc_ok,-fno-stack-protector,) 37GCCOPT += $(call gcc_ok,-fwrapv,) 38GCCOPT += $(call gcc_ok,-freg-struct-return,) 39GCCOPT += -Os 40# Note -fPIE does not work with ld on x86_64, try -fPIC instead 41# Does BIOS build require -fPIE? 42GCCOPT += $(call gcc_ok,-fPIC) 43GCCOPT += $(call gcc_ok,-fno-exceptions,) 44GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,) 45GCCOPT += $(call gcc_ok,-fno-strict-aliasing,) 46GCCOPT += $(call gcc_ok,-falign-functions=0,-malign-functions=0) 47GCCOPT += $(call gcc_ok,-falign-jumps=0,-malign-jumps=0) 48GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0) 49GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0) 50 51ifndef EFI_BUILD 52GCCOPT += -mregparm=3 -DREGPARM=3 53endif 54 55com32 := $(topdir)/com32 56RELOCS := $(com32)/tools/relocs 57 58ifneq ($(NOGPL),1) 59GPLLIB = $(com32)/gpllib/libcom32gpl.a 60GPLINCLUDE = -I$(com32)/gplinclude 61else 62GPLLIB = 63GPLINCLUDE = 64endif 65 66CFLAGS = $(GCCOPT) $(GCCWARN) \ 67 -fomit-frame-pointer -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ \ 68 -nostdinc -iwithprefix include \ 69 -I$(com32)/libutil/include -I$(com32)/include \ 70 -I$(com32)/include/sys $(GPLINCLUDE) 71SFLAGS = $(GCCOPT) $(GCCWARN) \ 72 -fomit-frame-pointer -D__COM32__ -D__FIRMWARE_$(FIRMWARE)__ \ 73 -nostdinc -iwithprefix include \ 74 -I$(com32)/libutil/include -I$(com32)/include \ 75 -I$(com32)/include/sys $(GPLINCLUDE) 76 77COM32LD = $(com32)/lib/$(ARCH)/elf.ld 78LDFLAGS = -m elf_$(ARCH) -shared --hash-style=gnu -T $(COM32LD) 79LIBGCC := $(shell $(CC) $(GCCOPT) --print-libgcc) 80 81LNXCFLAGS = -I$(com32)/libutil/include $(GCCWARN) -O -g \ 82 -D_GNU_SOURCE -D_FORTIFY_SOURCE=0 -Wno-error 83LNXSFLAGS = -g 84LNXLDFLAGS = -g 85 86C_LIBS = $(GPLLIB) $(com32)/lib/libcom32.c32 $(LIBGCC) 87C_LNXLIBS = $(com32)/libutil/libutil_lnx.a 88 89.SUFFIXES: .lss .c .lo .o .elf .c32 .lnx 90 91.PRECIOUS: %.o 92%.o: %.S 93 $(CC) $(MAKEDEPS) $(SFLAGS) -c -o $@ $< 94 95.PRECIOUS: %.o 96%.o: %.c 97 $(CC) $(MAKEDEPS) $(CFLAGS) -c -o $@ $< 98 99.PRECIOUS: %.elf 100%.elf: %.o $(LIBS) $(C_LIBS) $(COM32LD) 101 $(LD) $(LDFLAGS) -o $@ $(filter-out $(COM32LD),$^) 102 103.PRECIOUS: %.lo 104%.lo: %.S 105 $(CC) $(MAKEDEPS) $(LNXSFLAGS) -c -o $@ $< 106 107.PRECIOUS: %.lo 108%.lo: %.c 109 $(CC) $(MAKEDEPS) $(LNXCFLAGS) -c -o $@ $< 110 111.PRECIOUS: %.lnx 112%.lnx: %.lo $(LNXLIBS) $(C_LNXLIBS) 113 $(CC) $(LNXCFLAGS) -o $@ $^ 114 115%.c32: %.elf 116 $(OBJCOPY) --strip-debug --strip-unneeded $< $@ 117 ##$(OBJCOPY) -O binary $< $@ 118 ##$(RELOCS) $< >> $@ || ( rm -f $@ ; false ) 119