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# multilibs  -*- mode:Makefile -*-

#

# Copyright (C) 2007, 2011 Free Software Foundation, Inc.

#

# This file is part of GCC.

#

# GCC is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3, or (at your option)

# any later version.

#

# GCC is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with GCC; see the file COPYING3.  If not see

# .

# An awk command to extract lines from the m68k-devices.def file that

# match $1 and then print the string defined by $2.  Leading and

# trailing whitespace is removed.  $1 & $2 can make use of

# CPU -- the cpu identifier (has leading 'm'/'mcf')

# FLAGS -- the cpu capability flags

# CPU_NAME -- the cpu name (has no leading m/mcf)

# MLIB -- the multilib cpu name (no leading m/mcf)

# This is intended to be used as $(call M68K_AWK,predicate,string)

M68K_AWK = $(strip $(shell $(AWK) 'BEGIN { FS="[ \t]*[,()][ \t]*"; ORS=" " }; \

        /^M68K_DEVICE/ { CPU=$$3; FLAGS=$$8; \

        CPU_NAME=substr($$2,2,length($$2)-2); \

        MLIB=substr($$5,2,length($$5)-2); \

        if ($1) print $2 }' $(srcdir)/config/m68k/m68k-devices.def))

# Add a multilib for each distinct architecture.  M68K_MLIB_CPU, if defined,

# adds additional restrictions.

M68K_MLIB_CPUS := $(call M68K_AWK,\

        (CPU_NAME == MLIB) $(M68K_MLIB_CPU), \

        "m"MLIB)

# Make the default cpu the default multilib.

M68K_MLIB_DEFAULT := $(call M68K_AWK, CPU == "$(target_cpu_default)", MLIB)

ifeq ($(filter m$(M68K_MLIB_DEFAULT),$(M68K_MLIB_CPUS)),)

$(error Error default cpu '$(target_cpu_default)' is not in multilib set '$(M68K_MLIB_CPUS)')

endif

MULTILIB_DIRNAMES := $(filter-out m$(M68K_MLIB_DEFAULT),$(M68K_MLIB_CPUS))

MULTILIB_OPTIONS := $(shell echo $(MULTILIB_DIRNAMES:m%=mcpu=%) \

                      | sed -e 's| |/|g' )

# Add subtarget specific options & dirs.

MULTILIB_DIRNAMES += $(M68K_MLIB_DIRNAMES)

MULTILIB_OPTIONS += $(M68K_MLIB_OPTIONS)

MULTILIB_MATCHES :=

ifneq ($(M68K_ARCH),cf)

# Map -march=* options to the representative -mcpu=* option.

MULTILIB_MATCHES += mcpu?68000=march?68000 \

                    mcpu?68020=march?68020 \

                    mcpu?68030=march?68030 \

                    mcpu?68040=march?68040 \

                    mcpu?68060=march?68060 \

                    mcpu?cpu32=march?cpu32

endif

ifneq ($(M68K_ARCH),m68k)

# Map -march=* options to the representative -mcpu=* option.

MULTILIB_MATCHES += mcpu?5206e=march?isaa mcpu?5208=march?isaaplus \

                    mcpu?5407=march?isab

endif

# Match non-representative -mcpu options to their representative option.

MULTILIB_MATCHES += \

  $(call M68K_AWK, \

         (CPU_NAME != MLIB) $(M68K_MLIB_CPU), \

         ("mcpu?"MLIB"=mcpu?"CPU_NAME))

MULTILIB_EXCEPTIONS :=

ifeq ($(firstword $(M68K_MLIB_OPTIONS)),msoft-float)

# Exclude soft-float multilibs for targets that default to soft-float anyway.

MULTILIB_EXCEPTIONS += $(call M68K_AWK,\

        (CPU_NAME == MLIB) $(M68K_MLIB_CPU) \

         && (((CPU ~ "^mcf") && !match(FLAGS, "FL_CF_FPU")) \

             || CPU == "cpu32" \

             || CPU == "m68000"), \

         "mcpu="MLIB"/msoft-float*")

endif

# Remove the default CPU from the explicit exceptions.

MULTILIB_EXCEPTIONS := \

        $(patsubst mcpu=$(M68K_MLIB_DEFAULT)/%,%,$(MULTILIB_EXCEPTIONS))