76 lines
2.7 KiB
Makefile
76 lines
2.7 KiB
Makefile
## -*- makefile -*- ------------------------------------------------------
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##
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## Copyright 2001-2008 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., 53 Temple Place Ste 330,
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## Boston MA 02111-1307, 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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## Make configuration for embedded directories
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##
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include $(MAKEDIR)/syslinux.mk
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# Support IA32 and x86_64 platforms with one build
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# Set up architecture specifics; for cross compilation, set ARCH as apt
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# Initialize GCCOPT to null to begin with. Without this, make generates
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# recursive error for GCCOPT
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GCCOPT :=
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ifeq ($(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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GCCOPT += $(call gcc_ok,-mincoming-stack-boundary=2,)
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endif
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ifeq ($(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 and incoming-stack-boundary be default(=4)
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# Somewhere down the line ld barfs requiring -fPIC
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GCCOPT += $(call gcc_ok,-fPIC)
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endif
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GCCOPT += $(call gcc_ok,-ffreestanding,)
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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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ifdef EFI_BUILD
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GCCOPT += -Os -fomit-frame-pointer -msoft-float
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else
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GCCOPT += -Os -fomit-frame-pointer -mregparm=3 -DREGPARM=3 \
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-msoft-float
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endif
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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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GCCOPT += $(call gcc_ok,-fno-strict-aliasing,)
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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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GCCOPT += $(call gcc_ok,-fvisibility=hidden)
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LIBGCC := $(shell $(CC) $(GCCOPT) --print-libgcc)
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LD += -m elf_$(ARCH)
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# Note: use += for CFLAGS and SFLAGS in case something is set in MCONFIG.local
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CFLAGS += $(GCCOPT) -g $(GCCWARN) -Wno-sign-compare $(OPTFLAGS) $(INCLUDES)
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SFLAGS += $(CFLAGS) -D__ASSEMBLY__
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.SUFFIXES: .c .o .S .s .i .elf .com .bin .asm .lst .c32 .lss
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%.o: %.c
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$(CC) $(MAKEDEPS) $(CFLAGS) -c -o $@ $<
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%.i: %.c
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$(CC) $(MAKEDEPS) $(CFLAGS) -E -o $@ $<
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%.s: %.c
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$(CC) $(MAKEDEPS) $(CFLAGS) -S -o $@ $<
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%.o: %.S
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$(CC) $(MAKEDEPS) $(SFLAGS) -Wa,-a=$*.lst -c -o $@ $<
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%.s: %.S
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$(CC) $(MAKEDEPS) $(SFLAGS) -E -o $@ $<
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