| 1 | ## -*- makefile -*- ------------------------------------------------------ |
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| 2 | ## |
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| 3 | ## Copyright 2001-2008 H. Peter Anvin - All Rights Reserved |
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| 4 | ## |
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| 5 | ## This program is free software; you can redistribute it and/or modify |
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| 6 | ## it under the terms of the GNU General Public License as published by |
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| 7 | ## the Free Software Foundation, Inc., 53 Temple Place Ste 330, |
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| 8 | ## Boston MA 02111-1307, USA; either version 2 of the License, or |
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| 9 | ## (at your option) any later version; incorporated herein by reference. |
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| 10 | ## |
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| 11 | ## ----------------------------------------------------------------------- |
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| 12 | |
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| 13 | ## |
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| 14 | ## Make configuration for embedded directories |
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| 15 | ## |
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| 16 | |
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| 17 | include $(MAKEDIR)/syslinux.mk |
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| 18 | |
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| 19 | # Support IA32 and x86_64 platforms with one build |
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| 20 | # Set up architecture specifics; for cross compilation, set ARCH as apt |
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| 21 | # Initialize GCCOPT to null to begin with. Without this, make generates |
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| 22 | # recursive error for GCCOPT |
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| 23 | GCCOPT := |
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| 24 | ifeq ($(ARCH),i386) |
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| 25 | GCCOPT := $(call gcc_ok,-m32) |
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| 26 | GCCOPT += $(call gcc_ok,-march=i386) |
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| 27 | GCCOPT += $(call gcc_ok,-mpreferred-stack-boundary=2,) |
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| 28 | GCCOPT += $(call gcc_ok,-mincoming-stack-boundary=2,) |
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| 29 | endif |
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| 30 | ifeq ($(ARCH),x86_64) |
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| 31 | GCCOPT := $(call gcc_ok,-m64) |
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| 32 | GCCOPT += $(call gcc_ok,-march=x86-64) |
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| 33 | #let preferred-stack-boundary and incoming-stack-boundary be default(=4) |
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| 34 | # Somewhere down the line ld barfs requiring -fPIC |
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| 35 | GCCOPT += $(call gcc_ok,-fPIC) |
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| 36 | endif |
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| 37 | GCCOPT += $(call gcc_ok,-ffreestanding,) |
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| 38 | GCCOPT += $(call gcc_ok,-fno-stack-protector,) |
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| 39 | GCCOPT += $(call gcc_ok,-fwrapv,) |
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| 40 | GCCOPT += $(call gcc_ok,-freg-struct-return,) |
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| 41 | ifdef EFI_BUILD |
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| 42 | GCCOPT += -Os -fomit-frame-pointer -msoft-float |
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| 43 | else |
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| 44 | GCCOPT += -Os -fomit-frame-pointer -mregparm=3 -DREGPARM=3 \ |
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| 45 | -msoft-float |
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| 46 | endif |
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| 47 | GCCOPT += $(call gcc_ok,-fno-exceptions,) |
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| 48 | GCCOPT += $(call gcc_ok,-fno-asynchronous-unwind-tables,) |
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| 49 | GCCOPT += $(call gcc_ok,-fno-strict-aliasing,) |
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| 50 | GCCOPT += $(call gcc_ok,-falign-functions=0,-malign-functions=0) |
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| 51 | GCCOPT += $(call gcc_ok,-falign-jumps=0,-malign-jumps=0) |
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| 52 | GCCOPT += $(call gcc_ok,-falign-labels=0,-malign-labels=0) |
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| 53 | GCCOPT += $(call gcc_ok,-falign-loops=0,-malign-loops=0) |
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| 54 | GCCOPT += $(call gcc_ok,-fvisibility=hidden) |
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| 55 | |
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| 56 | LIBGCC := $(shell $(CC) $(GCCOPT) --print-libgcc) |
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| 57 | |
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| 58 | LD += -m elf_$(ARCH) |
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| 59 | |
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| 60 | # Note: use += for CFLAGS and SFLAGS in case something is set in MCONFIG.local |
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| 61 | CFLAGS += $(GCCOPT) -g $(GCCWARN) -Wno-sign-compare $(OPTFLAGS) $(INCLUDES) |
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| 62 | SFLAGS += $(CFLAGS) -D__ASSEMBLY__ |
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| 63 | |
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| 64 | .SUFFIXES: .c .o .S .s .i .elf .com .bin .asm .lst .c32 .lss |
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| 65 | |
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| 66 | %.o: %.c |
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| 67 | $(CC) $(MAKEDEPS) $(CFLAGS) -c -o $@ $< |
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| 68 | %.i: %.c |
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| 69 | $(CC) $(MAKEDEPS) $(CFLAGS) -E -o $@ $< |
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| 70 | %.s: %.c |
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| 71 | $(CC) $(MAKEDEPS) $(CFLAGS) -S -o $@ $< |
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| 72 | %.o: %.S |
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| 73 | $(CC) $(MAKEDEPS) $(SFLAGS) -Wa,-a=$*.lst -c -o $@ $< |
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| 74 | %.s: %.S |
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| 75 | $(CC) $(MAKEDEPS) $(SFLAGS) -E -o $@ $< |
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