source: bootcd/isolinux/syslinux-6.03/gnu-efi/gnu-efi-3.0/Make.defaults

# -*- makefile -*-
# Copyright (c) 1999-2007 Hewlett-Packard Development Company, L.P.
#       Contributed by David Mosberger <davidm@hpl.hp.com>
#       Contributed by Stephane Eranian <eranian@hpl.hp.com>
#
#    All rights reserved.
#
#    Redistribution and use in source and binary forms, with or without
#    modification, are permitted provided that the following conditions
#    are met:
#
#    * Redistributions of source code must retain the above copyright
#      notice, this list of conditions and the following disclaimer.
#    * Redistributions in binary form must reproduce the above
#      copyright notice, this list of conditions and the following
#      disclaimer in the documentation and/or other materials
#      provided with the distribution.
#    * Neither the name of Hewlett-Packard Co. nor the names of its
#      contributors may be used to endorse or promote products derived
#      from this software without specific prior written permission.
#
#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
#    CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
#    INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#    MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
#    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
#    BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
#    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
#    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
#    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
#    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
#    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#    SUCH DAMAGE.
#

TOPDIR := $(shell if [ "$$PWD" != "" ]; then echo $$PWD; else pwd; fi)

#
# Variables below overridable from command-line:
#   make VARNAME=value ...
#

#
# Where to install the package. GNU-EFI will create and access
# lib and include under the root
#
INSTALLROOT  := /
PREFIX       := /usr/local
LIBDIR       := $(PREFIX)/lib
INSTALL      := install

# Compilation tools
prefix       := /usr/bin/
CC           := $(prefix)gcc
AS           := $(prefix)as
LD           := $(prefix)ld
AR           := $(prefix)ar
RANLIB       := $(prefix)ranlib
OBJCOPY      := $(prefix)objcopy


# Host/target identification
OS           := $(shell uname -s)
HOSTARCH     := $(shell $(CC) -dumpmachine | cut -f1 -d- | sed s,i[3456789]86,ia32,)
ARCH         := $(shell uname -m | sed s,i[3456789]86,ia32,)

# FreeBSD (and possibly others) reports amd64 instead of x86_64
ifeq ($(ARCH),amd64)
  override ARCH := x86_64
endif

#
# Variables below derived from variables above
#

GCCVERSION   := $(shell $(CC) -dumpversion | cut -f1 -d.)
GCCMINOR     := $(shell $(CC) -dumpversion | cut -f2 -d.)

# Rely on GCC MS ABI support?
GCCNEWENOUGH := $(shell ( [ $(GCCVERSION) -gt "4" ]           \
                          || ( [ $(GCCVERSION) -eq "4" ]      \
                               && [ $(GCCMINOR) -ge "7" ] ) ) \
                        && echo 1)
ifeq ($(GCCNEWENOUGH),1)
  CPPFLAGS += -DGNU_EFI_USE_MS_ABI -maccumulate-outgoing-args --std=c11
endif

# Arch-specific compilation flags
CPPFLAGS += -DCONFIG_$(ARCH)

ifeq ($(ARCH),ia64)
  CFLAGS += -mfixed-range=f32-f127
endif

ifeq ($(ARCH),ia32)
  CFLAGS += -mno-mmx -mno-sse
  ifeq ($(HOSTARCH),x86_64)
    ARCH3264 = -m32
  endif
endif

ifeq ($(ARCH),x86_64)
  CFLAGS += -mno-red-zone -mno-mmx -mno-sse
  ifeq ($(HOSTARCH),ia32)
    ARCH3264 = -m64
  endif
endif

# Generic compilation flags
INCDIR  += -I$(SRCDIR) -I$(TOPDIR)/inc -I$(TOPDIR)/inc/$(ARCH) \
           -I$(TOPDIR)/inc/protocol
CFLAGS  += $(ARCH3264) -O2 -fpic -Wall -fshort-wchar -fno-strict-aliasing \
           -fno-merge-constants -ffreestanding -fno-stack-protector       \
           -fno-stack-check
ASFLAGS += $(ARCH3264)
LDFLAGS += -nostdlib --warn-common --no-undefined --fatal-warnings