| 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 ) |
|---|
