# -*- 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
HOSTCC       := $(prefix)gcc
CC           := $(prefix)$(CROSS_COMPILE)gcc
AS           := $(prefix)$(CROSS_COMPILE)as
LD           := $(prefix)$(CROSS_COMPILE)ld
AR           := $(prefix)$(CROSS_COMPILE)ar
RANLIB       := $(prefix)$(CROSS_COMPILE)ranlib
OBJCOPY      := $(prefix)$(CROSS_COMPILE)objcopy


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

# Get ARCH from the compiler if cross compiling 
ifneq ($(CROSS_COMPILE),)
  override ARCH := $(shell $(CC) -dumpmachine | cut -f1 -d-| sed s,i[3456789]86,ia32,)
endif

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

#
# Where to build the package
#
OBJDIR       := $(TOPDIR)/$(ARCH)

#
# Variables below derived from variables above
#

# 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)
  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

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

#
# Set HAVE_EFI_OBJCOPY if objcopy understands --target efi-[app|bsdrv|rtdrv],
# otherwise we need to compose the PE/COFF header using the assembler
#
ifneq ($(ARCH),aarch64)
ifneq ($(ARCH),arm)
export HAVE_EFI_OBJCOPY=y
endif
endif

ifneq ($(ARCH),arm)
export LIBGCC=$(shell $(CC) $(ARCH3264) -print-libgcc-file-name)
endif

ifeq ($(ARCH),arm)
CFLAGS += -marm
endif

# Generic compilation flags
INCDIR  += -I$(SRCDIR) -I$(TOPDIR)/inc -I$(TOPDIR)/inc/$(ARCH) \
           -I$(TOPDIR)/inc/protocol

# Only enable -fpic for non MinGW compilers (unneeded on MinGW)
GCCMACHINE := $(shell $(CC) -dumpmachine)
ifneq (mingw32,$(findstring mingw32, $(GCCMACHINE)))
  CFLAGS += -fpic
endif

ifeq (FreeBSD, $(findstring FreeBSD, $(OS)))
CFLAGS  += $(ARCH3264) -g -O2 -Wall -Wextra -Werror \
           -fshort-wchar -fno-strict-aliasing \
           -ffreestanding -fno-stack-protector
else
CFLAGS  += $(ARCH3264) -g -O2 -Wall -Wextra -Werror \
           -fshort-wchar -fno-strict-aliasing \
           -fno-merge-constants -ffreestanding -fno-stack-protector \
           -fno-stack-check
endif

ASFLAGS += $(ARCH3264)
LDFLAGS	+= -nostdlib --warn-common --no-undefined --fatal-warnings \
	   --build-id=sha1