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dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.13)dnl
AC_INIT(Makefile.in)

AC_PROG_CC
AC_PROG_INSTALL
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)

AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/..)
AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM
AC_PROG_CC
AC_SUBST(CFLAGS)
AC_SUBST(HDEFINES)
AR=${AR-ar}
AC_SUBST(AR)
AC_PROG_RANLIB

# Put a plausible default for CC_FOR_BUILD in Makefile.
if test "x$cross_compiling" = "xno"; then
  CC_FOR_BUILD='$(CC)'
else
  CC_FOR_BUILD=gcc
fi
AC_SUBST(CC_FOR_BUILD)

# If a cpu ever has more than one simulator to choose from, use
# --enable-sim=... to choose.
AC_ARG_ENABLE(sim,
[  --enable-sim ],
[case "${enableval}" in
yes | no) ;;
*)      AC_MSG_ERROR(bad value ${enableval} given for --enable-sim option) ;;
esac])

# Assume simulator can be built with cc.
# If the user passes --enable-sim built it regardless of $(CC).
only_if_gcc=no
only_if_enabled=no
extra_subdirs=common

# WHEN ADDING ENTRIES TO THIS MATRIX:
#  Make sure that the left side always has two dashes.  Otherwise you
#  can get spurious matches.  Even for unambiguous cases, do this as a
#  convention, else the table becomes a real mess to understand and maintain.

case "${target}" in
  arm*-*-* | thumb*-*-*)
        sim_target=arm
        extra_subdirs="${extra_subdirs} testsuite"
        ;;
  strongarm*-*-*)
        sim_target=arm
        extra_subdirs="${extra_subdirs} testsuite"
        ;;
  xscale-*-*)
        sim_target=arm
        extra_subdirs="${extra_subdirs} testsuite"
        ;;
  d10v-*-*)             sim_target=d10v ;;
  d30v-*-*)
        sim_target=d30v
        only_if_gcc=yes
        extra_subdirs="${extra_subdirs} igen"
        ;;
  fr30-*-*)             sim_target=fr30 ;;
  h8300*-*-*)           sim_target=h8300 ;;
  h8500-*-*)            sim_target=h8500 ;;
  i960-*-*)             sim_target=i960 ;;
  m32r-*-*)             sim_target=m32r ;;
  m68hc11-*-*|m6811-*-*) sim_target=m68hc11 ;;
  mcore-*-*)            sim_target=mcore ;;
  mips*-*-*)
        # The MIPS simulator can only be compiled by gcc.
        sim_target=mips
        only_if_gcc=yes
        extra_subdirs="${extra_subdirs} igen"
        ;;
  mn10300*-*-*)
        # The mn10300 simulator can only be compiled by gcc.
        sim_target=mn10300
        only_if_gcc=yes
        extra_subdirs="${extra_subdirs} igen"
        ;;
  mn10200*-*-*)
        sim_target=mn10200
        ;;
  sh*-*-*)              sim_target=sh ;;
  powerpc*-*-eabi* | powerpc*-*-solaris* | powerpc*-*-sysv4* | powerpc*-*-elf* | powerpc*-*-linux* )
        # The PowerPC simulator uses the GCC extension long long as well as
        # ANSI prototypes, so don't enable it for random host compilers
        # unless asked to.
        sim_target=ppc
        only_if_gcc=yes
        #extra_subdirs="${extra_subdirs}"
        ;;
  tic80-*-*)
        sim_target=tic80
        only_if_gcc=yes
        extra_subdirs="${extra_subdirs} igen"
        ;;
  v850-*-*)
        # The V850 simulator can only be compiled by gcc.
        sim_target=v850
        extra_subdirs="${extra_subdirs} igen"
        only_if_gcc=yes
        ;;
  v850e-*-*)
        # The V850 simulator can only be compiled by gcc.
        sim_target=v850
        extra_subdirs="${extra_subdirs} igen"
        only_if_gcc=yes
        ;;
  v850ea-*-*)
        # The V850 simulator can only be compiled by gcc.
        sim_target=v850
        extra_subdirs="${extra_subdirs} igen"
        only_if_gcc=yes
        ;;
  w65-*-*)
        sim_target=w65
        # The w65 is suffering from gradual decay.
        only_if_enabled=yes
        ;;
  z8k*-*-*)             sim_target=z8k ;;
  sparc64-*-*)
        only_if_gcc=yes
        sim_target=none # Don't build erc32 if sparc64.
        ;;
  sparclite*-*-* | sparc86x*-*-*)
        # The SPARC simulator can only be compiled by gcc.
        only_if_gcc=yes
        sim_target=erc32
        ;;
  sparc*-*-*)
        # The SPARC simulator can only be compiled by gcc.
        only_if_gcc=yes
        # Unfortunately erc32 won't build on many hosts, so only enable
        # it if the user really really wants it.
        only_if_enabled=yes
        sim_target=erc32
        ;;
  *)                    sim_target=none ;;
esac


# Is there a testsuite directory for the target?
testdir=`echo ${target} | sed -e 's/-.*-/-/'`
if test -r ${srcdir}/testsuite/${testdir}/configure ; then
  extra_subdirs="${extra_subdirs} testsuite"
fi


case "${enable_sim}" in
no)     sim_target=none ;;
yes)
        if test ${only_if_gcc} = yes ; then
                if test "${GCC}" != yes ; then
                        echo "Can't enable simulator since not compiling with GCC."
                        sim_target=none
                fi
        fi
        ;;
*)
        if test ${only_if_enabled} = yes ; then
                sim_target=none
        else
                if test ${only_if_gcc} = yes ; then
                        if test "${GCC}" != yes ; then
                                sim_target=none
                        fi
                fi
        fi
        ;;
esac

if test x"${sim_target}" != xnone ; then
        configdirs="${extra_subdirs} ${sim_target}"
        AC_CONFIG_SUBDIRS($configdirs)
fi

AC_OUTPUT(Makefile)

exit 0