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 18 include $(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 22 GCCOPT := $(call gcc_ok,-std=gnu99,) 23 ifeq ($(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 += $(call gcc_ok,-incoming-stack-boundary=2,) 28 endif 29 ifeq ($(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,) 35 endif 36 GCCOPT += $(call gcc_ok,-fno-stack-protector,) 37 GCCOPT += $(call gcc_ok,-fwrapv,) 38 GCCOPT += $(call gcc_ok,-freg-struct-return,) 39 GCCOPT += -Os 40 # Note -fPIE does not work with ld on x86_64, try -fPIC instead 41 # Does BIOS build require -fPIE? 42 GCCOPT += $(call gcc_ok,-fPIC) 43 GCCOPT += $(call gcc_ok,-fno-exceptions,) 44 GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,) 45 GCCOPT += $(call gcc_ok,-fno-strict-aliasing,) 46 GCCOPT += $(call gcc_ok,-falign-functions=0,-malign-functions=0) 47 GCCOPT += $(call gcc_ok,-falign-jumps=0,-malign-jumps=0) 48 GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0) 49 GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0) 50 51 ifndef EFI_BUILD 52 GCCOPT += -mregparm=3 -DREGPARM=3 53 endif 54 55 com32 := $(topdir)/com32 56 RELOCS := $(com32)/tools/relocs 57 58 ifneq ($(NOGPL),1) 59 GPLLIB = $(com32)/gpllib/libcom32gpl.a 60 GPLINCLUDE = -I$(com32)/gplinclude 61 else 62 GPLLIB = 63 GPLINCLUDE = 64 endif 65 66 CFLAGS = $(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) 71 SFLAGS = $(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 77 COM32LD = $(com32)/lib/$(ARCH)/elf.ld 78 LDFLAGS = -m elf_$(ARCH) -shared --hash-style=gnu -T $(COM32LD) 79 LIBGCC := $(shell $(CC) $(GCCOPT) --print-libgcc) 80 81 LNXCFLAGS = -I$(com32)/libutil/include $(GCCWARN) -O -g \ 82 -D_GNU_SOURCE -D_FORTIFY_SOURCE=0 -Wno-error 83 LNXSFLAGS = -g 84 LNXLDFLAGS = -g 85 86 C_LIBS = $(GPLLIB) $(com32)/lib/libcom32.c32 $(LIBGCC) 87 C_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
