# 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 supportnewlib_cflags=libm_machine_dir=machine_dir=sys_dir=posix_dir=signal_dir=signalsyscall_dir=unix_dir=mach_add_setjmp=use_libtool=noaext=aoext=ocase "${target_optspace}:${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 ${gcc_dir}include"	;;  m68k-sun-sunos*)	unix_dir=unix	;;  m8*-bug-*)	sys_dir=m88kbug	;;  mips*-dec-*)	sys_dir=decstation	;;  mmix-knuth-mmixware)	sys_dir=mmixware	;;  powerpcle-*-pe)	sys_dir=cygwin	posix_dir=posix	;;  sh*-*)	sys_dir=sh	;;  sparc-sun-sunos*)	sys_dir=sun4	unix_dir=unix	;;  sparc64*)	sys_dir=sparc64	unix_dir=unix	;;  strongarm-*-*)	sys_dir=arm 	;;  xscale-*-*)	sys_dir=arm 	;;  thumb-*-*)	sys_dir=arm 	;;  tic80*)	sys_dir=tic80	;;  v70-nec-*)	sys_dir=sysvnecv70	;;  v810-*-*)	sys_dir=sysnec810	;;  v850-*-*)	sys_dir=sysnecv850	;;  v850e-*-*)	sys_dir=sysnecv850	;;  v850ea-*-*)	sys_dir=sysnecv850	;;  *-*-visopsys*)	sys_dir=visopsys	;;  w65-*-*)	sys_dir=w65	;;  z8k-*-coff)	sys_dir=z8ksim	;;esac# Host specific flag settings -- usually for features that are not# general enough or broad enough to be handled above.# THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.case "${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