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# configure.host

# This shell script handles all host based configuration for newlib.

# It sets various shell variables based on the the host and the

# configuration options.  You can modify this shell script without

# needing to rerun autoconf.

# This shell script should be invoked as

#   . configure.host

# If it encounters an error, it will exit with a message.

# FIXME: This script is too complicated.  It does things in too many

# different ways.  This was taken from the old Cygnus configure script

# with only minor changes.  It should be cleaned up.

# FIXME: The general approach of picking and choosing which

# directories to configure, other than machine_dir and sys_dir, is

# potentially confusing.

# It uses the following shell variables:

#   host                The configuration host

#   host_cpu            The configuration host CPU

#   newlib_mb           --enable-newlib-mb ("yes", "no")

#   target_optspace     --enable-target-optspace ("yes", "no", "")

#   newlib_multithread  --enable-newlib-multithread ("yes", "no", "yes")

#   newlib_elix_level   --enable-newlib-elix-level ("1","2","3","4") ("4")

#   newlib_io_c99_formats --enable-newlib-io-c99-formats ("yes", "no", "")

#   newlib_io_long_long --enable-newlib-io-long-long ("yes", "no", "")

#   newlib_io_long_double --enable-newlib-io-long-double ("yes", "no", "")

# It sets the following shell variables:

#   newlib_cflags       Special CFLAGS to use when building

#   machine_dir         Subdirectory of libc/machine to configure

#   sys_dir             Subdirectory of libc/sys to configure

#   have_sys_mach_dir   Is there a machine subdirectory in sys subdirectory

#   posix_dir           "posix" to build libc/posix, "" otherwise

#   signal_dir          "signal" to build libc/signal, "" otherwise

#   stdio64_dir         "stdio64" to build libc/stdio64, "" otherwise

#   syscall_dir         "syscalls" to build libc/syscalls, "" otherwise

#   unix_dir            "unix" to build libc/unix, "" otherwise

#   use_libtool         flag: use libtool to build newlib?

#   aext                library extension - needed for libtool support

#   oext                object file extension - needed for libtool support

#   lpfx                library object prefix - generated when no libtool

#   crt1                name of crt1 object if one is provided

#   crt1_dir            directory where crt1 object is found

#   have_crt0           "yes"/"no" if crt0 is/isn't provided.

#                       "" if crt0 is provided when sys_dir is set

newlib_cflags=

libm_machine_dir=

machine_dir=

sys_dir=

posix_dir=

signal_dir=signal

stdio_dir=stdio

stdio64_dir=

syscall_dir=

unix_dir=

mach_add_setjmp=

crt1=

crt1_dir=

have_crt0=

use_libtool=no

have_sys_mach_dir=no

default_newlib_io_c99_formats=no

default_newlib_io_long_long=no

default_newlib_io_long_double=no

default_newlib_io_pos_args=no

default_newlib_atexit_dynamic_alloc=yes

aext=a

oext=o

lpfx="lib_a-"

case "${target_optspace}:${host}" in

  yes:*)

    newlib_cflags="${newlib_cflags} -Os"

    ;;

  :m32r-* | :d10v-* | :d30v-* | :avr-* | :m32c-* )

    newlib_cflags="${newlib_cflags} -Os"

    ;;

  no:* | :*)

    newlib_cflags="${newlib_cflags} -O2"

    ;;

esac

# Get the source directories to use for the CPU type.

# machine_dir should supply CPU dependent routines, such as setjmp.

# newlib_cflags is passed to gcc when compiling.

# THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.

case "${host_cpu}" in

  a29k)

        machine_dir=a29k

        ;;

  arc)

        machine_dir=

        ;;

  arm)

        machine_dir=arm

        ;;

  avr*)

        newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mcall-prologues"

        ;;

  bfin)

        machine_dir=bfin

        ;;

  cris | crisv32)

        machine_dir=cris

        ;;

  crx*)

        machine_dir=crx

        ;;

  d10v*)

        machine_dir=d10v

        ;;

  d30v*)

        machine_dir=d30v

        ;;

  ep9312)

        machine_dir=arm

        ;;

  fido)

        machine_dir=m68k

        newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"

        ;;

  fr30)

        machine_dir=fr30

        ;;

  frv)

        machine_dir=frv

        ;;

  h8300)

        machine_dir=h8300

        ;;

  h8500)

        machine_dir=h8500

        ;;

  hppa*)

        machine_dir=hppa

        ;;

  i960)

        machine_dir=i960

        ;;

  i[34567]86)

        # Don't use for these since they provide their own setjmp.

        case ${host} in

        *-*-sco* | *-*-cygwin*)

                libm_machine_dir=i386

                machine_dir=i386

                ;;

        *)

                libm_machine_dir=i386

                machine_dir=i386

                mach_add_setjmp=true

                ;;

        esac

        ;;

  ia64*)

        ;;

  iq2000)

        machine_dir=iq2000

        ;;

  lm32)

        machine_dir=lm32

        ;;

  m32c)

        machine_dir=m32c

        newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -DABORT_PROVIDED -DSMALL_MEMORY"

        ;;

  m32r*)

        machine_dir=m32r

        ;;

  m68hc11|m6811|m68hc12|m6812)

        machine_dir=m68hc11

        newlib_cflags="-DPREFER_SIZE_OVER_SPEED -Os -mrelax"

        CFLAGS="-g -Os"

        ;;

  m68*)

        machine_dir=m68k

        newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"

        ;;

  m88k)

        machine_dir=m88k

        newlib_cflags="${newlib_cflags} -m88000"

        ;;

  m88110)

        machine_dir=m88k

        newlib_cflags="${newlib_cflags} -m88110"

        ;;

  mcore)

        ;;

  mep)

        machine_dir=mep

        ;;

  mips*)

        machine_dir=mips

        ;;

  mmix)

        ;;

  mn10200)

        machine_dir=mn10200

        ;;

  mn10300)

        default_newlib_io_long_long="yes"

        machine_dir=mn10300

        ;;

  mt*)

        machine_dir=mt

        ;;

  or16)

        ;;

  or32)

        machine_dir=or32

        ;;

  powerpc*)

        machine_dir=powerpc

        ;;

  sh | sh64)

        machine_dir=sh

        ;;

  sparc*)

        machine_dir=sparc

        # FIXME: Might wish to make MALLOC_ALIGNMENT more generic.

        newlib_cflags="${newlib_cflags} -DMALLOC_ALIGNMENT=8"

        ;;

  strongarm)

        machine_dir=arm

        ;;

  xscale)

        machine_dir=xscale

        ;;

  thumb)

        machine_dir=arm

        ;;

  tic4x|c4x)

        machine_dir=tic4x

        ;;

  tic80*)

        machine_dir=tic80

        ;;

  v70)

        ;;

  v810)

        ;;

  v850)

        machine_dir=v850

        newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "

        ;;

  v850e)

        machine_dir=v850

        newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED "

        ;;

  w65*)

        machine_dir=w65

        ;;

  x86_64)

        machine_dir=x86_64

        ;;

  xstormy16)

        machine_dir=xstormy16

        newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"

        newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"

        ;;

  z8k)

        machine_dir=z8k

        ;;

  spu)

        stdio_dir=

        libm_machine_dir=spu

        machine_dir=spu

        newlib_cflags="${newlib_cflags} -D_POSIX_MODE"

        newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "

        ;;

  *)

        echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2

        exit 1

        ;;

esac

# Disable thread support if requested.

if [ "${newlib_multithread}" = "no" ] ; then

        newlib_cflags="${newlib_cflags} -D__SINGLE_THREAD__"

fi

# Disable syscall support if requested.

if [ "${newlib_may_supply_syscalls}" = "no" ] ; then

        newlib_cflags="${newlib_cflags} -D__NO_SYSCALLS__"

fi

# Enable multibyte support if requested or it is defaulted

# for target.

if [ "x${newlib_mb}" = "x" ]; then

        case "${host}" in

          i[34567]86-pc-linux-*|*-*-cygwin*)

                newlib_mb=yes

                ;;

        esac

fi

# Disable printf/scanf floating-point support if requested.

if [ "${newlib_io_float}" = "no" ] ; then

        newlib_cflags="${newlib_cflags} -DNO_FLOATING_POINT"

fi

# Verify if shared newlib support is allowed and set appropriate variables

# We don't want to use libtool for platforms that we are not going to

# support shared libraries.  This is because it adds executable tests which

# we don't want for most embedded platforms.

case "${host}" in

  i[34567]86-pc-linux-*)

    use_libtool=yes

    have_sys_mach_dir=yes

    stdio64_dir=stdio64

    oext=lo

    lpfx=

    aext=la ;;

  *) ;; #shared library not supported for ${host}

esac

# Get the source directories to use for the host.  unix_dir is set

# to unix to get some standard Unix routines.  posix_dir is set to get some

# standard Posix routines.  sys_dir should supply system dependent routines

# including crt0.

# THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.

case "${host}" in

  *-*-cygwin*)

        posix_dir=posix

        stdio64_dir=stdio64

        ;;

  *-*-netware*)

        signal_dir=

        sys_dir=netware

        ;;

  *-*-rtems*)                   # generic RTEMS support

        sys_dir=rtems

        posix_dir=posix

        unix_dir=unix

        ;;

  a29k-*-*)

        sys_dir=a29khif

        signal_dir=

        ;;

  arc-*-*)

        sys_dir=arc

        ;;

  arm-*-*)

        sys_dir=arm

        if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then

          have_crt0="no"

        fi

        ;;

  bfin-*-*)

        sys_dir=

        ;;

  crx*)

        sys_dir=

        ;;

  d10v*)

        sys_dir=d10v

        ;;

  d30v*)

        sys_dir=

        ;;

  ep9312-*-*)

        sys_dir=arm

        if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then

          have_crt0="no"

        fi

        ;;

  frv*)

        sys_dir=

        ;;

  h8300-*-hms*)

        sys_dir=h8300hms

        ;;

  h8300-*-elf*)

        sys_dir=h8300hms

        ;;

  h8300-*-coff*)

        sys_dir=h8300hms

        ;;

  h8300-*-xray*)

        sys_dir=h8300xray

        ;;

  h8500-*-hms*)

        sys_dir=h8500hms

        ;;

  h8500-*-elf*)

        sys_dir=h8500hms

        ;;

  i[34567]86-*-rdos*)

        sys_dir=rdos

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        ;;

  i[34567]86-*-sco*)

        sys_dir=sysvi386

        unix_dir=unix

        ;;

  i[34567]86-pc-linux-*)

        sys_dir=linux

        unix_dir=unix

        posix_dir=posix

        crt1=crt1.o

        crt1_dir=libc/sys/${sys_dir}

        gcc_dir=`gcc -print-search-dirs | awk '/^install:/{print $2}'`

        default_newlib_io_c99_formats="yes"

        default_newlib_io_long_double="yes"

        default_newlib_io_long_long="yes"

        default_newlib_io_pos_args="yes"

        #newlib_cflags="${newlib_cflags} -Werror" # DEBUGGING ONLY;BREAKS BUILD

        newlib_cflags="${newlib_cflags} -Wall"

        newlib_cflags="${newlib_cflags} -D_I386MACH_ALLOW_HW_INTERRUPTS"

        newlib_cflags="${newlib_cflags} -DHAVE_FCNTL"

        newlib_cflags="${newlib_cflags} -DHAVE_GETOPT"

        # --- Required when building a shared library ------------------------

        newlib_cflags="${newlib_cflags} -fPIC -D_I386MACH_NEED_SOTYPE_FUNCTION"

        # --- The three lines below are optional ------------------------------

        ##newlib_cflags="${newlib_cflags} -nostdinc"

        ##newlib_cflags="${newlib_cflags} -I`newlib-flags --kernel-dir`/include"

        ##newlib_cflags="${newlib_cflags} -idirafter ${gcc_dir}include"

        ;;

  m68hc11-*-*|m6811-*-*|m6812-*-*|m68hc12-*-*)

        ;;

  m68k-sun-sunos*)

        unix_dir=unix

        ;;

  m8*-bug-*)

        sys_dir=m88kbug

        ;;

  mep-*-*)

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        ;;

  mips*-dec-*)

        sys_dir=decstation

        ;;

  mmix-knuth-mmixware)

        sys_dir=mmixware

        ;;

  powerpcle-*-pe)

        posix_dir=posix

        ;;

  sh*-*)

        sys_dir=sh

        ;;

  sparc-sun-sunos*)

        sys_dir=sun4

        unix_dir=unix

        ;;

  sparc64*)

        sys_dir=sparc64

        unix_dir=unix

        ;;

  spu-*-*)

        default_newlib_io_long_long="yes"

        default_newlib_atexit_dynamic_alloc="no"

        ;;

  strongarm-*-*)

        sys_dir=arm

        if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then

          have_crt0="no"

        fi

        ;;

  thumb-*-*)

        sys_dir=arm

        if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then

          have_crt0="no"

        fi

        ;;

  tic80*)

        sys_dir=tic80

        ;;

  v70-nec-*)

        sys_dir=sysvnecv70

        ;;

  v810-*-*)

        sys_dir=sysnec810

        ;;

  v850-*-*)

        sys_dir=sysnecv850

        ;;

  v850e-*-*)

        sys_dir=sysnecv850

        ;;

  v850ea-*-*)

        sys_dir=sysnecv850

        ;;

  w65-*-*)

        sys_dir=w65

        ;;

  xscale-*-*)

        sys_dir=arm

        if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then

          have_crt0="no"

        fi

        ;;

  z8k-*-coff)

        sys_dir=z8ksim

        ;;

esac

# Host specific flag settings -- usually for features that are not

# general enough or broad enough to be handled above.

# THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.

case "${host}" in

  *-*-cygwin*)

        test -z "$cygwin_srcdir" && cygwin_srcdir=`cd ${srcdir}/../winsup/cygwin; pwd`

        export cygwin_srcdir

        default_newlib_io_c99_formats="yes"

        default_newlib_io_long_long="yes"

        default_newlib_io_long_double="yes"

        default_newlib_io_pos_args="yes"

        CC="${CC} -I${cygwin_srcdir}/include"

        newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DSIGNAL_PROVIDED -D_COMPILING_NEWLIB -DHAVE_BLKSIZE -DHAVE_FCNTL -DMALLOC_PROVIDED"

        syscall_dir=syscalls

        ;;

# RTEMS supplies its own versions of some routines:

#       malloc()            (reentrant version)

#       exit()              RTEMS has a "global" reent to flush

#       signal()/raise()    RTEMS has its own including pthread signals

#       _XYZ_r()            RTEMS has its own reentrant routines

#

#  NOTE: When newlib malloc uses a semaphore, RTEMS will switch to that.

  *-*-rtems*)

        default_newlib_io_long_long="yes"

        default_newlib_io_c99_formats="yes"

        newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DEXIT_PROVIDED -DMISSING_SYSCALL_NAMES -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_NANOSLEEP -DHAVE_FCNTL"

        # turn off unsupported items in posix directory

        newlib_cflags="${newlib_cflags} -D_NO_GETLOGIN -D_NO_GETPWENT -D_NO_GETUT -D_NO_GETPASS -D_NO_SIGSET"

        ;;

# VxWorks supplies its own version of malloc, and the newlib one

# doesn't work because VxWorks does not have sbrk.

  *-wrs-vxworks*)

        newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DMISSING_SYSCALL_NAMES -DHAVE_FCNTL"

        ;;

# UDI doesn't have exec, so system() should fail the right way

  a29k-amd-udi)

        newlib_cflags="${newlib_cflags} -DNO_EXEC"

        syscall_dir=syscalls

        ;;

  arc-*-*)

        syscall_dir=syscalls

        ;;

  arm-*-pe)

        syscall_dir=syscalls

        ;;

  arm-*-*)

        syscall_dir=syscalls

# If newlib is supplying syscalls, select which debug protocol is being used.

# ARM_RDP_MONITOR selects the Demon monitor.

# ARM_RDI_MONITOR selects the Angel monitor.

# If neither are defined, then hard coded defaults will be used

# to create the program's environment.

# If --disable-newlib-supplied-syscalls is specified, then the end-user

# may specify the protocol via gcc spec files supplied by libgloss.

# See also thumb below.

        if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then

#         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"

          newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        fi

        ;;

  arc*)

        newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"

        ;;

  avr*)

        newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"

        ;;

  bfin*)

        syscall_dir=syscalls

        ;;

  cris-*-* | crisv32-*-*)

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -DHAVE_RENAME -D_USE_WRITE -DCOMPACT_CTYPE"

        syscall_dir=syscalls

        ;;

  crx-*-*)

        newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DMISSING_SYSCALL_NAMES"

        syscall_dir=

        ;;

  d10v*)

        newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"

        syscall_dir=syscalls

        ;;

  d30v*)

        newlib_cflags="${newlib_cflags} -DABORT_MESSAGE -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"

        syscall_dir=

        ;;

  ep9312-*-*)

        syscall_dir=syscalls

        if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then

          newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        fi

        ;;

  fido-*-elf)

        newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"

        syscall_dir=

        ;;

  fr30-*-*)

        syscall_dir=syscalls

        ;;

  frv-*-*)

        syscall_dir=syscalls

        default_newlib_io_long_long="yes"

        ;;

  h8300*-*-*)

        syscall_dir=syscalls

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"

        # Simulator only extensions for H8300.

        # Uncomment the next line to enable them.

        # newlib_cflags="${newlib_cflags} -D__SIMULATOR__"

        ;;

  h8500-*-*)

        syscall_dir=syscalls

        newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"

        ;;

  i[34567]86-*-sco*)

        newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_FCNTL"

        ;;

  i[34567]86-*-netware*)

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DABORT_PROVIDED -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DHAVE_FCNTL"

        ;;

  iq2000*)

        syscall_dir=syscalls

        default_newlib_io_long_long="yes"

        ;;

  lm32-*-*)

        syscall_dir=syscalls

        ;;

  m32r-*-*)

        # Pass -msdata=sdata so _impure_ptr goes in .sdata.

        # We don't generate sda relocs however for upward compatibility.

        # FIXME: This is necessary because the default multilib doesn't

        # use --print-multi-lib.

        newlib_cflags="${newlib_cflags} -msdata=sdata"

        syscall_dir=syscalls

        ;;

  m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)

        newlib_cflags="${newlib_cflags} -DNO_EXEC -DABORT_PROVIDED -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"

        ;;

  m68k-unknown-elf)

        newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"

        syscall_dir=

        ;;

  mcore-*-*)

        syscall_dir=syscalls

        ;;

  mips64vr*-*-*)

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        ;;

  mips*-*-elf*)

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        ;;

  mmix-*)

        syscall_dir=syscalls

        # We need every symbol 32-bit aligned, so the invalid

        # construct with attribute ((alias ("_ctype_b+127"))) breaks.

        newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"

        ;;

  mn10?00-*-*)

        syscall_dir=syscalls

        ;;

  or32-*-*)

        syscall_dir=syscalls

        ;;

  powerpc*-*-eabialtivec*)

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        ;;

  powerpc*-*-eabispe*)

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        ;;

  powerpc*-*-eabi* | \

  powerpc*-*-elf* | \

  powerpc*-*-linux* | \

  powerpc*-*-rtem* | \

  powerpc*-*-sysv* | \

  powerpc*-*-solaris*)

        default_newlib_io_long_long="yes"

        newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"

        ;;

  powerpcle-*-pe)

        newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL"

        syscall_dir=syscalls

        ;;

  sh*-*-*)

        default_newlib_io_long_long="yes"

        syscall_dir=syscalls

        ;;

  sparc-sun-sunos*)

        newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"

        ;;

  sparc64-*-*)

        newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_BLKSIZE -DHAVE_FCNTL"

        # This either belongs elsewhere or nowhere. But I need *something*,

        # so for now it's here ...

        case "${host_os}" in

          aoutv8 | *32p)

                newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=32" ;;

          *)

                newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=64" ;;

        esac

        ;;

  strongarm-*-*)

        syscall_dir=syscalls

        ;;

  thumb-*-pe)

        syscall_dir=syscalls

# Don't use the debugging protocols just yet.

        ;;

  thumb-*-*)

        syscall_dir=syscalls

# If newlib is supplying syscalls, select which debug protocol is being used.

# ARM_RDP_MONITOR selects the Demon monitor.

# ARM_RDI_MONITOR selects the Angel monitor.

# If neither are defined, then hard coded defaults will be used

# to create the program's environment.

# If --disable-newlib-supplied-syscalls is specified, then the end-user

# may specify the protocol via gcc spec files supplied by libgloss.

        if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then

#         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"

          newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        fi

        ;;

  tic80*)

        syscall_dir=syscalls

        ;;

  v850-*-*)

        syscall_dir=syscalls

        ;;

  v850e-*-*)

        syscall_dir=syscalls

        ;;

  v850ea-*-*)

        syscall_dir=syscalls

        ;;

  w65-*-*)

        syscall_dir=syscalls

        newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"

        ;;

  xscale-*-*)

        syscall_dir=syscalls

        newlib_cflags="${newlib_cflags} -DHAVE_SYSTEM -DHAVE_RENAME"

        if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then

          newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        fi

        ;;

  xstormy16-*-*)

        syscall_dir=syscalls

        ;;

  z8k-*-*)

        syscall_dir=syscalls

        ;;

  *)

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        syscall_dir=

        ;;

esac

# Use defaults for certain settings if not specified by user

# Enable C99 format support in I/O routines if requested.

if [ "x${newlib_io_c99_formats}" = "x" ]; then

        if [ ${default_newlib_io_c99_formats} = "yes" ]; then

                newlib_io_c99_formats="yes";

        fi

fi

# Enable long long support in I/O routines if requested.

if [ "x${newlib_io_long_long}" = "x" ]; then

        if [ ${default_newlib_io_long_long} = "yes" ]; then

                newlib_io_long_long="yes";

        fi

fi

# Enable long double support in I/O routines if requested.

if [ "x${newlib_io_long_double}" = "x" ]; then

        if [ ${default_newlib_io_long_double} = "yes" ]; then

                newlib_io_long_double="yes";

        fi

fi

# Enable printf positional argument support if requested.

if [ "x${newlib_io_pos_args}" = "x" ]; then

        if [ ${default_newlib_io_pos_args} = "yes" ]; then

                newlib_io_pos_args="yes";

        fi

fi

# Disable atexit dynamic allocation if requested.

if [ "x${newlib_atexit_dynamic_alloc}" = "x" ]; then

        if [ ${default_newlib_atexit_dynamic_alloc} = "yes" ]; then

                newlib_atexit_dynamic_alloc="yes";

        fi

fi

if test -z "${have_crt0}" && test -n "${sys_dir}"; then

  have_crt0="yes"

fi