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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", "")

# 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

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

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

newlib_cflags=

libm_machine_dir=

machine_dir=

sys_dir=

posix_dir=

signal_dir=signal

syscall_dir=

unix_dir=

mach_add_setjmp=

use_libtool=no

aext=a

oext=o

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

  yes:*)

    newlib_cflags="${newlib_cflags} -Os"

    ;;

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

    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"

        ;;

  d10v*)

        machine_dir=d10v

        ;;

  d30v*)

        machine_dir=d30v

        ;;

  fr30)

        machine_dir=fr30

        ;;

  h8300)

        machine_dir=h8300

        ;;

  h8500)

        machine_dir=h8500

        ;;

  hppa*)

        machine_dir=hppa

        ;;

  i960)

        machine_dir=i960

        ;;

  i[3456]86)

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

        case ${host} in

        *-*-go32 | *-*-sco* | *-*-cygwin*)

                libm_machine_dir=i386

                machine_dir=i386

                ;;

        *)

                libm_machine_dir=i386

                machine_dir=i386

                mach_add_setjmp=true

                ;;

        esac

        ;;

  ia64*)

        ;;

  m32r*)

        machine_dir=m32r

        ;;

  m68*)

        machine_dir=m68k

        ;;

  m88k)

        machine_dir=m88k

        newlib_cflags="${newlib_cflags} -m88000"

        ;;

  m88110)

        machine_dir=m88k

        newlib_cflags="${newlib_cflags} -m88110"

        ;;

  mcore)

        ;;

  mips*)

        machine_dir=mips

        ;;

  mmix)

        ;;

  mn10200)

        machine_dir=mn10200

        ;;

  mn10300)

        machine_dir=mn10300

        ;;

  or16)

        ;;

  or32)

        ;;

  powerpc*)

        machine_dir=powerpc

        ;;

  sh)

        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

        ;;

  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 -mv850 "

        ;;

  v850ea)

        machine_dir=v850

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

        ;;

  w65*)

        machine_dir=w65

        ;;

  z8k)

        machine_dir=z8k

        ;;

  *)

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

        exit 1

        ;;

esac

# Enable multibyte support if requested.

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

        newlib_cflags="${newlib_cflags} -DMB_CAPABLE"

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[3456]86-pc-linux-*)

    use_libtool=yes

    oext=lo

    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*)

        sys_dir=cygwin

        posix_dir=posix

        ;;

  *-*-netware*)

        signal_dir=

        sys_dir=netware

        ;;

  *-*-rtems*)                   # generic RTEMS support

        sys_dir=rtems

        # RTEMS POSIX support is all inside RTEMS

        ;;

  a29k-*-*)

        sys_dir=a29khif

        signal_dir=

        ;;

  arc-*-*)

        sys_dir=arc

        ;;

  arm-*-*)

        sys_dir=arm

        ;;

  d10v*)

        sys_dir=d10v

        ;;

  d30v*)

        sys_dir=

        ;;

  h8300-*-hms*)

        sys_dir=h8300hms

        ;;

  h8300-*-elf*)

        sys_dir=h8300hms

        ;;

  h8300-*-xray*)

        sys_dir=h8300xray

        ;;

  h8500-*-hms*)

        sys_dir=h8500hms

        ;;

  h8500-*-elf*)

        sys_dir=h8500hms

        ;;

  i[3456]86-*-go32)

        sys_dir=go32

        ;;

  i[3456]86-*-sco*)

        sys_dir=sysvi386

        unix_dir=unix

        ;;

  i[3456]86-pc-linux-*)

        sys_dir=linux

        unix_dir=unix

        posix_dir=posix

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

        #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} -D_LOOSE_KERNEL_NAMES -DHAVE_FCNTL"

        # --- 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"

        ;;

  m68k-sun-sunos*)

        unix_dir=unix

        ;;

  m8*-bug-*)

        sys_dir=m88kbug

        ;;

  mips*-dec-*)

        sys_dir=decstation

        ;;

  mmix-knuth-mmixware)

        sys_dir=mmixware

        ;;

  powerpcle-*-pe)

        sys_dir=cygwin

        posix_dir=posix

        ;;

  sh*-*)

        sys_dir=sh

        ;;

  sparc-sun-sunos*)

        sys_dir=sun4

        unix_dir=unix

        ;;

  sparc64*)

        sys_dir=sparc64

        unix_dir=unix

        ;;

  strongarm-*-*)

        sys_dir=arm

        ;;

  xscale-*-*)

        sys_dir=arm

        ;;

  thumb-*-*)

        sys_dir=arm

        ;;

  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

        ;;

  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*)

        newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DSIGNAL_PROVIDED -DWANT_IO_LONG_DBL -DWANT_PRINTF_LONG_LONG -D_COMPILING_NEWLIB -DHAVE_FCNTL"

# CYGWIN provides its own malloc if --enable-malloc-debugging is set

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

          newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"

        fi

        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*)

        newlib_cflags="${newlib_cflags} -DHAVE_GETTIMEOFDAY -DMALLOC_PROVIDED -DEXIT_PROVIDED -DMISSING_SYSCALL_NAMES -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_OPENDIR -DNO_EXEC -DWANT_PRINTF_LONG_LONG -DHAVE_FCNTL"

        ;;

# 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

        newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"

# Don't use the debugging protocols just yet.

        ;;

  arm-*-*)

        syscall_dir=syscalls

        newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"

# 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.

# See also thumb below.

#       newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"

        newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        ;;

  avr*)

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

        ;;

  d10v*)

        newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"

        syscall_dir=syscalls

        ;;

  d30v*)

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

        syscall_dir=

        ;;

  fr30-*-*)

        newlib_cflags="${newlib_cflags}"

        syscall_dir=syscalls

        ;;

  h8300*-*-*)

        syscall_dir=syscalls

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

        ;;

  h8500-*-*)

        syscall_dir=syscalls

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

        ;;

  i[3456]86-*-sco*)

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

        ;;

  i[3456]86-*-netware*)

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

        ;;

  i[3456]86-*-go32)

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

        ;;

  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

        ;;

  mcore-*-*)

        newlib_cflags="${newlib_cflags}"

        syscall_dir=syscalls

        ;;

  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

        ;;

  powerpc*-*-eabi* | \

  powerpc*-*-elf* | \

  powerpc*-*-linux* | \

  powerpc*-*-rtem* | \

  powerpc*-*-sysv* | \

  powerpc*-*-solaris*)

        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*-*-*)

        newlib_cflags="${newlib_cflags} -DHAVE_GETTIMEOFDAY"

        syscall_dir=syscalls

        ;;

  sparc-sun-sunos*)

        newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"

        ;;

  sparc64-*-*)

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

        newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"

        newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        ;;

  xscale-*-*)

        syscall_dir=syscalls

        newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"

        newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        ;;

  thumb-*-pe)

        syscall_dir=syscalls

        newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"

# Don't use the debugging protocols just yet.

        ;;

  thumb-*-*)

        syscall_dir=syscalls

        newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"

# 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.

# See also arm and strongarm above.

#       newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"

        newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"

        ;;

  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"

        ;;

  z8k-*-*)

        syscall_dir=syscalls

        ;;

  *)

        newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"

        syscall_dir=

        ;;

esac