newlib/configure.host

   1 # configure.host
   2
   3 # This shell script handles all host based configuration for newlib.
   4 # It sets various shell variables based on the the host and the
   5 # configuration options.  You can modify this shell script without
   6 # needing to rerun autoconf.
   7
   8 # This shell script should be invoked as
   9 #   . configure.host
  10 # If it encounters an error, it will exit with a message.
  11
  12 # FIXME: This script is too complicated.  It does things in too many
  13 # different ways.  This was taken from the old Cygnus configure script
  14 # with only minor changes.  It should be cleaned up.
  15
  16 # FIXME: The general approach of picking and choosing which
  17 # directories to configure, other than machine_dir and sys_dir, is
  18 # potentially confusing.
  19
  20 # It uses the following shell variables:
  21 #   host                The configuration host
  22 #   host_cpu            The configuration host CPU
  23 #   newlib_mb           --enable-newlib-mb ("yes", "no")
  24 #   target_optspace     --enable-target-optspace ("yes", "no", "")
  25 #   newlib_multithread  --enable-newlib-multithread ("yes", "no", "yes")
  26 #   newlib_elix_level   --enable-newlib-elix-level ("1","2","3","4") ("4")
  27 #   newlib_io_long_long --enable-newlib-io-long-long ("yes", "no", "")
  28 #   newlib_io_long_double --enable-newlib-io-long-double ("yes", "no", "")
  29
  30 # It sets the following shell variables:
  31 #   newlib_cflags       Special CFLAGS to use when building
  32 #   machine_dir         Subdirectory of libc/machine to configure
  33 #   sys_dir             Subdirectory of libc/sys to configure
  34 #   have_sys_mach_dir   Is there a machine subdirectory in sys subdirectory
  35 #   posix_dir           "posix" to build libc/posix, "" otherwise
  36 #   signal_dir          "signal" to build libc/signal, "" otherwise
  37 #   stdio64_dir         "stdio64" to build libc/stdio64, "" otherwise
  38 #   syscall_dir         "syscalls" to build libc/syscalls, "" otherwise
  39 #   unix_dir            "unix" to build libc/unix, "" otherwise
  40 #   use_libtool         flag: use libtool to build newlib?
  41 #   aext                library extension - needed for libtool support
  42 #   oext                object file extension - needed for libtool support
  43 #   lpfx                library object prefix - generated when no libtool
  44 #   crt1                name of crt1 object if one is provided
  45 #   crt1_dir            directory where crt1 object is found
  46 #   have_crt0           "yes"/"no" if crt0 is/isn't provided.
  47 #                       "" if crt0 is provided when sys_dir is set
  48
  49 newlib_cflags=
  50 libm_machine_dir=
  51 machine_dir=
  52 sys_dir=
  53 posix_dir=
  54 signal_dir=signal
  55 stdio_dir=stdio
  56 stdio64_dir=
  57 syscall_dir=
  58 unix_dir=
  59 mach_add_setjmp=
  60 crt1=
  61 crt1_dir=
  62 have_crt0=
  63 use_libtool=no
  64 have_sys_mach_dir=no
  65 default_newlib_io_long_long=no
  66 default_newlib_io_long_double=no
  67 default_newlib_io_pos_args=no
  68 default_newlib_atexit_dynamic_alloc=yes
  69 aext=a
  70 oext=o
  71 lpfx="lib_a-"
  72
  73 case "${target_optspace}:${host}" in
  74   yes:*)
  75     newlib_cflags="${newlib_cflags} -Os"
  76     ;;
  77   :m32r-* | :d10v-* | :d30v-* | :avr-* | :m32c-* )
  78     newlib_cflags="${newlib_cflags} -Os"
  79     ;;
  80   no:* | :*)
  81     newlib_cflags="${newlib_cflags} -O2"
  82     ;;
  83 esac
  84
  85 # Get the source directories to use for the CPU type.
  86 # machine_dir should supply CPU dependent routines, such as setjmp.
  87 # newlib_cflags is passed to gcc when compiling.
  88 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
  89
  90 case "${host_cpu}" in
  91   a29k)
  92         machine_dir=a29k
  93         ;;
  94   arc)
  95         machine_dir=
  96         ;;
  97   arm)
  98         machine_dir=arm
  99         ;;
 100   avr*)
 101         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mcall-prologues"
 102         ;;
 103   bfin)
 104         machine_dir=bfin
 105         ;;
 106   cris | crisv32)
 107         machine_dir=cris
 108         ;;
 109   crx*)
 110         machine_dir=crx
 111         ;;
 112   d10v*)
 113         machine_dir=d10v
 114         ;;
 115   d30v*)
 116         machine_dir=d30v
 117         ;;
 118   ep9312)
 119         machine_dir=arm
 120         ;;
 121   fido)
 122         machine_dir=m68k
 123         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 124         ;;
 125   fr30)
 126         machine_dir=fr30
 127         ;;
 128   frv)
 129         machine_dir=frv
 130         ;;
 131   h8300)
 132         machine_dir=h8300
 133         ;;
 134   h8500)
 135         machine_dir=h8500
 136         ;;
 137   hppa*)
 138         machine_dir=hppa
 139         ;;
 140   i960)
 141         machine_dir=i960
 142         ;;
 143   i[34567]86)
 144         # Don't use for these since they provide their own setjmp.
 145         case ${host} in
 146         *-*-sco* | *-*-cygwin*)
 147                 libm_machine_dir=i386
 148                 machine_dir=i386
 149                 ;;
 150         *)
 151                 libm_machine_dir=i386
 152                 machine_dir=i386
 153                 mach_add_setjmp=true
 154                 ;;
 155         esac
 156         ;;
 157   ia64*)
 158         ;;
 159   iq2000)
 160         machine_dir=iq2000
 161         ;;
 162   m32c)
 163         machine_dir=m32c
 164         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -DABORT_PROVIDED -DSMALL_MEMORY"
 165         ;;
 166
 167   m32r*)
 168         machine_dir=m32r
 169         ;;
 170
 171   m68hc11|m6811|m68hc12|m6812)
 172         machine_dir=m68hc11
 173         newlib_cflags="-DPREFER_SIZE_OVER_SPEED -Os -mrelax"
 174         CFLAGS="-g -Os"
 175         ;;
 176
 177   m68*)
 178         machine_dir=m68k
 179         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 180         ;;
 181   m88k)
 182         machine_dir=m88k
 183         newlib_cflags="${newlib_cflags} -m88000"
 184         ;;
 185   m88110)
 186         machine_dir=m88k
 187         newlib_cflags="${newlib_cflags} -m88110"
 188         ;;
 189   mcore)
 190         ;;
 191   mips*)
 192         machine_dir=mips
 193         ;;
 194   mmix)
 195         ;;
 196   mn10200)
 197         machine_dir=mn10200
 198         ;;
 199   mn10300)
 200         default_newlib_io_long_long="yes"
 201         machine_dir=mn10300
 202         ;;
 203   mt*)
 204         machine_dir=mt
 205         ;;
 206   or16)
 207         ;;
 208   or32)
 209         ;;
 210   powerpc*)
 211         machine_dir=powerpc
 212         ;;
 213   sh | sh64)
 214         machine_dir=sh
 215         ;;
 216   sparc*)
 217         machine_dir=sparc
 218         # FIXME: Might wish to make MALLOC_ALIGNMENT more generic.
 219         newlib_cflags="${newlib_cflags} -DMALLOC_ALIGNMENT=8"
 220         ;;
 221   strongarm)
 222         machine_dir=arm
 223         ;;
 224   xscale)
 225         machine_dir=xscale
 226         ;;
 227   thumb)
 228         machine_dir=arm
 229         ;;
 230   tic4x|c4x)
 231         machine_dir=tic4x
 232         ;;
 233   tic80*)
 234         machine_dir=tic80
 235         ;;
 236   v70)
 237         ;;
 238   v810)
 239         ;;
 240   v850)
 241         machine_dir=v850
 242         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 243         ;;
 244   v850e)
 245         machine_dir=v850
 246         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED "
 247         ;;
 248   w65*)
 249         machine_dir=w65
 250         ;;
 251   xstormy16)
 252         machine_dir=xstormy16
 253         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"
 254         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"
 255         ;;
 256   z8k)
 257         machine_dir=z8k
 258         ;;
 259   spu)
 260         machine_dir=spu
 261         newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
 262         ;;
 263   *)
 264         echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2
 265         exit 1
 266         ;;
 267 esac
 268
 269 # Disable thread support if requested.
 270
 271 if [ "${newlib_multithread}" = "no" ] ; then
 272         newlib_cflags="${newlib_cflags} -D__SINGLE_THREAD__"
 273 fi
 274
 275 # Disable syscall support if requested.
 276
 277 if [ "${newlib_may_supply_syscalls}" = "no" ] ; then
 278         newlib_cflags="${newlib_cflags} -D__NO_SYSCALLS__"
 279 fi
 280
 281 # Enable multibyte support if requested or it is defaulted
 282 # for target.
 283
 284 if [ "x${newlib_mb}" = "x" ]; then
 285         case "${host}" in
 286           i[34567]86-pc-linux-*|*-*-cygwin*)
 287                 newlib_mb=yes
 288                 ;;
 289         esac
 290 fi
 291
 292 # Disable printf/scanf floating-point support if requested.
 293
 294 if [ "${newlib_io_float}" = "no" ] ; then
 295         newlib_cflags="${newlib_cflags} -DNO_FLOATING_POINT"
 296 fi
 297
 298 # Verify if shared newlib support is allowed and set appropriate variables
 299 # We don't want to use libtool for platforms that we are not going to
 300 # support shared libraries.  This is because it adds executable tests which
 301 # we don't want for most embedded platforms.
 302 case "${host}" in
 303   i[34567]86-pc-linux-*)
 304     use_libtool=yes
 305     have_sys_mach_dir=yes
 306     stdio64_dir=stdio64
 307     oext=lo
 308     lpfx=
 309     aext=la ;;
 310   *) ;; #shared library not supported for ${host}
 311 esac
 312
 313 # Get the source directories to use for the host.  unix_dir is set
 314 # to unix to get some standard Unix routines.  posix_dir is set to get some
 315 # standard Posix routines.  sys_dir should supply system dependent routines
 316 # including crt0.
 317 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 318
 319 case "${host}" in
 320   *-*-cygwin*)
 321         posix_dir=posix
 322         stdio64_dir=stdio64
 323         ;;
 324   *-*-netware*)
 325         signal_dir=
 326         sys_dir=netware
 327         ;;
 328   *-*-rtems*)                   # generic RTEMS support
 329         sys_dir=rtems
 330         # RTEMS POSIX support is all inside RTEMS
 331         ;;
 332   a29k-*-*)
 333         sys_dir=a29khif
 334         signal_dir=
 335         ;;
 336   arc-*-*)
 337         sys_dir=arc
 338         ;;
 339   arm-*-*)
 340         sys_dir=arm
 341         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 342           have_crt0="no"
 343         fi
 344         ;;
 345   bfin-*-*)
 346         sys_dir=
 347         ;;
 348   crx*)
 349         sys_dir=
 350         ;;
 351   d10v*)
 352         sys_dir=d10v
 353         ;;
 354   d30v*)
 355         sys_dir=
 356         ;;
 357   ep9312-*-*)
 358         sys_dir=arm
 359         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 360           have_crt0="no"
 361         fi
 362         ;;
 363   frv*)
 364         sys_dir=
 365         ;;
 366   h8300-*-hms*)
 367         sys_dir=h8300hms
 368         ;;
 369   h8300-*-elf*)
 370         sys_dir=h8300hms
 371         ;;
 372   h8300-*-coff*)
 373         sys_dir=h8300hms
 374         ;;
 375   h8300-*-xray*)
 376         sys_dir=h8300xray
 377         ;;
 378   h8500-*-hms*)
 379         sys_dir=h8500hms
 380         ;;
 381   h8500-*-elf*)
 382         sys_dir=h8500hms
 383         ;;
 384   i[34567]86-*-rdos*)
 385         sys_dir=rdos
 386         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 387         ;;
 388   i[34567]86-*-sco*)
 389         sys_dir=sysvi386
 390         unix_dir=unix
 391         ;;
 392   i[34567]86-pc-linux-*)
 393         sys_dir=linux
 394         unix_dir=unix
 395         posix_dir=posix
 396         crt1=crt1.o
 397         crt1_dir=libc/sys/${sys_dir}
 398         gcc_dir=`gcc -print-search-dirs | awk '/^install:/{print $2}'`
 399         default_newlib_io_long_double="yes"
 400         default_newlib_io_long_long="yes"
 401         default_newlib_io_pos_args="yes"
 402         #newlib_cflags="${newlib_cflags} -Werror" # DEBUGGING ONLY;BREAKS BUILD
 403         newlib_cflags="${newlib_cflags} -Wall"
 404         newlib_cflags="${newlib_cflags} -D_I386MACH_ALLOW_HW_INTERRUPTS"
 405         newlib_cflags="${newlib_cflags} -DHAVE_FCNTL"
 406         # --- Required when building a shared library ------------------------
 407         newlib_cflags="${newlib_cflags} -fPIC -D_I386MACH_NEED_SOTYPE_FUNCTION"
 408         # --- The three lines below are optional ------------------------------
 409         ##newlib_cflags="${newlib_cflags} -nostdinc"
 410         ##newlib_cflags="${newlib_cflags} -I`newlib-flags --kernel-dir`/include"
 411         ##newlib_cflags="${newlib_cflags} -idirafter ${gcc_dir}include"
 412         ;;
 413
 414   m68hc11-*-*|m6811-*-*|m6812-*-*|m68hc12-*-*)
 415         ;;
 416
 417   m68k-sun-sunos*)
 418         unix_dir=unix
 419         ;;
 420   m8*-bug-*)
 421         sys_dir=m88kbug
 422         ;;
 423   mips*-dec-*)
 424         sys_dir=decstation
 425         ;;
 426   mmix-knuth-mmixware)
 427         sys_dir=mmixware
 428         ;;
 429   powerpcle-*-pe)
 430         posix_dir=posix
 431         ;;
 432   sh*-*)
 433         sys_dir=sh
 434         ;;
 435   sparc-sun-sunos*)
 436         sys_dir=sun4
 437         unix_dir=unix
 438         ;;
 439   sparc64*)
 440         sys_dir=sparc64
 441         unix_dir=unix
 442         ;;
 443   spu-*-*)
 444         default_newlib_io_long_long="yes"
 445         ;;
 446   strongarm-*-*)
 447         sys_dir=arm
 448         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 449           have_crt0="no"
 450         fi
 451         ;;
 452   thumb-*-*)
 453         sys_dir=arm
 454         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 455           have_crt0="no"
 456         fi
 457         ;;
 458   tic80*)
 459         sys_dir=tic80
 460         ;;
 461   v70-nec-*)
 462         sys_dir=sysvnecv70
 463         ;;
 464   v810-*-*)
 465         sys_dir=sysnec810
 466         ;;
 467   v850-*-*)
 468         sys_dir=sysnecv850
 469         ;;
 470   v850e-*-*)
 471         sys_dir=sysnecv850
 472         ;;
 473   v850ea-*-*)
 474         sys_dir=sysnecv850
 475         ;;
 476   w65-*-*)
 477         sys_dir=w65
 478         ;;
 479   xscale-*-*)
 480         sys_dir=arm
 481         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 482           have_crt0="no"
 483         fi
 484         ;;
 485   z8k-*-coff)
 486         sys_dir=z8ksim
 487         ;;
 488 esac
 489
 490 # Host specific flag settings -- usually for features that are not
 491 # general enough or broad enough to be handled above.
 492 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 493
 494 case "${host}" in
 495   *-*-cygwin*)
 496         test -z "$cygwin_srcdir" && cygwin_srcdir=`cd ${srcdir}/../winsup/cygwin; pwd`
 497         export cygwin_srcdir
 498         default_newlib_io_long_long="yes"
 499         default_newlib_io_long_double="yes"
 500         default_newlib_io_pos_args="yes"
 501         CC="${CC} -I${cygwin_srcdir}/include"
 502         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DSIGNAL_PROVIDED -D_COMPILING_NEWLIB -DHAVE_BLKSIZE -DHAVE_FCNTL -DMALLOC_PROVIDED"
 503         syscall_dir=syscalls
 504         ;;
 505 # RTEMS supplies its own versions of some routines:
 506 #       malloc()            (reentrant version)
 507 #       exit()              RTEMS has a "global" reent to flush
 508 #       signal()/raise()    RTEMS has its own including pthread signals
 509 #       _XYZ_r()            RTEMS has its own reentrant routines
 510 #
 511 #  NOTE: When newlib malloc uses a semaphore, RTEMS will switch to that.
 512   *-*-rtems*)
 513         default_newlib_io_long_long="yes"
 514         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DEXIT_PROVIDED -DMISSING_SYSCALL_NAMES -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_OPENDIR -DNO_EXEC -DHAVE_FCNTL"
 515         ;;
 516 # VxWorks supplies its own version of malloc, and the newlib one
 517 # doesn't work because VxWorks does not have sbrk.
 518   *-wrs-vxworks*)
 519         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DMISSING_SYSCALL_NAMES -DHAVE_FCNTL"
 520         ;;
 521 # UDI doesn't have exec, so system() should fail the right way
 522   a29k-amd-udi)
 523         newlib_cflags="${newlib_cflags} -DNO_EXEC"
 524         syscall_dir=syscalls
 525         ;;
 526   arc-*-*)
 527         syscall_dir=syscalls
 528         ;;
 529   arm-*-pe)
 530         syscall_dir=syscalls
 531         ;;
 532   arm-*-*)
 533         syscall_dir=syscalls
 534 # If newlib is supplying syscalls, select which debug protocol is being used.
 535 # ARM_RDP_MONITOR selects the Demon monitor.
 536 # ARM_RDI_MONITOR selects the Angel monitor.
 537 # If neither are defined, then hard coded defaults will be used
 538 # to create the program's environment.
 539 # If --disable-newlib-supplied-syscalls is specified, then the end-user
 540 # may specify the protocol via gcc spec files supplied by libgloss.
 541 # See also thumb below.
 542         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 543 #         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 544           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 545         fi
 546         ;;
 547   arc*)
 548         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"
 549         ;;
 550   avr*)
 551         newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 552         ;;
 553   bfin*)
 554         syscall_dir=syscalls
 555         ;;
 556   cris-*-* | crisv32-*-*)
 557         default_newlib_io_long_long="yes"
 558         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -D_USE_WRITE -DCOMPACT_CTYPE"
 559         syscall_dir=syscalls
 560         ;;
 561   crx-*-*)
 562         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DMISSING_SYSCALL_NAMES"
 563         syscall_dir=
 564         ;;
 565   d10v*)
 566         newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
 567         syscall_dir=syscalls
 568         ;;
 569   d30v*)
 570         newlib_cflags="${newlib_cflags} -DABORT_MESSAGE -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 571         syscall_dir=
 572         ;;
 573   ep9312-*-*)
 574         syscall_dir=syscalls
 575         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 576           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 577         fi
 578         ;;
 579   fido-*-elf)
 580         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
 581         syscall_dir=
 582         ;;
 583   fr30-*-*)
 584         syscall_dir=syscalls
 585         ;;
 586   frv-*-*)
 587         syscall_dir=syscalls
 588         default_newlib_io_long_long="yes"
 589         ;;
 590   h8300*-*-*)
 591         syscall_dir=syscalls
 592         default_newlib_io_long_long="yes"
 593         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 594         # Simulator only extensions for H8300.
 595         # Uncomment the next line to enable them.
 596         # newlib_cflags="${newlib_cflags} -D__SIMULATOR__"
 597         ;;
 598   h8500-*-*)
 599         syscall_dir=syscalls
 600         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 601         ;;
 602   i[34567]86-*-sco*)
 603         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_FCNTL"
 604         ;;
 605   i[34567]86-*-netware*)
 606         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DABORT_PROVIDED -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DHAVE_FCNTL"
 607         ;;
 608   iq2000*)
 609         syscall_dir=syscalls
 610         default_newlib_io_long_long="yes"
 611         ;;
 612   m32r-*-*)
 613         # Pass -msdata=sdata so _impure_ptr goes in .sdata.
 614         # We don't generate sda relocs however for upward compatibility.
 615         # FIXME: This is necessary because the default multilib doesn't
 616         # use --print-multi-lib.
 617         newlib_cflags="${newlib_cflags} -msdata=sdata"
 618         syscall_dir=syscalls
 619         ;;
 620   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 621         newlib_cflags="${newlib_cflags} -DNO_EXEC -DABORT_PROVIDED -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 622         ;;
 623   m68k-unknown-elf)
 624         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
 625         syscall_dir=
 626         ;;
 627   mcore-*-*)
 628         syscall_dir=syscalls
 629         ;;
 630   mips64vr*-*-*)
 631         default_newlib_io_long_long="yes"
 632         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 633         ;;
 634   mips*-*-elf*)
 635         default_newlib_io_long_long="yes"
 636         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 637         ;;
 638   mmix-*)
 639         syscall_dir=syscalls
 640         # We need every symbol 32-bit aligned, so the invalid
 641         # construct with attribute ((alias ("_ctype_b+127"))) breaks.
 642         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 643         ;;
 644   mn10?00-*-*)
 645         syscall_dir=syscalls
 646         ;;
 647   powerpc*-*-eabialtivec*)
 648         default_newlib_io_long_long="yes"
 649         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 650         ;;
 651   powerpc*-*-eabispe*)
 652         default_newlib_io_long_long="yes"
 653         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 654         ;;
 655   powerpc*-*-eabi* | \
 656   powerpc*-*-elf* | \
 657   powerpc*-*-linux* | \
 658   powerpc*-*-rtem* | \
 659   powerpc*-*-sysv* | \
 660   powerpc*-*-solaris*)
 661         default_newlib_io_long_long="yes"
 662         newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"
 663         ;;
 664   powerpcle-*-pe)
 665         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL"
 666         syscall_dir=syscalls
 667         ;;
 668   sh*-*-*)
 669         default_newlib_io_long_long="yes"
 670         syscall_dir=syscalls
 671         ;;
 672   sparc-sun-sunos*)
 673         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"
 674         ;;
 675   sparc64-*-*)
 676         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_BLKSIZE -DHAVE_FCNTL"
 677         # This either belongs elsewhere or nowhere. But I need *something*,
 678         # so for now it's here ...
 679         case "${host_os}" in
 680           aoutv8 | *32p)
 681                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=32" ;;
 682           *)
 683                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=64" ;;
 684         esac
 685         ;;
 686   strongarm-*-*)
 687         syscall_dir=syscalls
 688         ;;
 689   thumb-*-pe)
 690         syscall_dir=syscalls
 691 # Don't use the debugging protocols just yet.
 692         ;;
 693   thumb-*-*)
 694         syscall_dir=syscalls
 695 # If newlib is supplying syscalls, select which debug protocol is being used.
 696 # ARM_RDP_MONITOR selects the Demon monitor.
 697 # ARM_RDI_MONITOR selects the Angel monitor.
 698 # If neither are defined, then hard coded defaults will be used
 699 # to create the program's environment.
 700 # If --disable-newlib-supplied-syscalls is specified, then the end-user
 701 # may specify the protocol via gcc spec files supplied by libgloss.
 702         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 703 #         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 704           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 705         fi
 706         ;;
 707   tic80*)
 708         syscall_dir=syscalls
 709         ;;
 710   v850-*-*)
 711         syscall_dir=syscalls
 712         ;;
 713   v850e-*-*)
 714         syscall_dir=syscalls
 715         ;;
 716   v850ea-*-*)
 717         syscall_dir=syscalls
 718         ;;
 719   w65-*-*)
 720         syscall_dir=syscalls
 721         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 722         ;;
 723   xscale-*-*)
 724         syscall_dir=syscalls
 725         newlib_cflags="${newlib_cflags} -DHAVE_SYSTEM -DHAVE_RENAME"
 726         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 727           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 728         fi
 729         ;;
 730   xstormy16-*-*)
 731         syscall_dir=syscalls
 732         ;;
 733   z8k-*-*)
 734         syscall_dir=syscalls
 735         ;;
 736   *)
 737         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 738         syscall_dir=
 739         ;;
 740 esac
 741
 742 # Use defaults for certain settings if not specified by user
 743
 744 # Enable long long support in I/O routines if requested.
 745 if [ "x${newlib_io_long_long}" = "x" ]; then
 746         if [ ${default_newlib_io_long_long} = "yes" ]; then
 747                 newlib_io_long_long="yes";
 748         fi
 749 fi
 750
 751 # Enable long double support in I/O routines if requested.
 752 if [ "x${newlib_io_long_double}" = "x" ]; then
 753         if [ ${default_newlib_io_long_double} = "yes" ]; then
 754                 newlib_io_long_double="yes";
 755         fi
 756 fi
 757
 758 # Enable printf positional argument support if requested.
 759 if [ "x${newlib_io_pos_args}" = "x" ]; then
 760         if [ ${default_newlib_io_pos_args} = "yes" ]; then
 761                 newlib_io_pos_args="yes";
 762         fi
 763 fi
 764
 765 # Disable atexit dynamic allocation if requested.
 766 if [ "x${newlib_atexit_dynamic_alloc}" = "x" ]; then
 767         if [ ${default_newlib_atexit_dynamic_alloc} = "yes" ]; then
 768                 newlib_atexit_dynamic_alloc="yes";
 769         fi
 770 fi
 771
 772 if test -z "${have_crt0}" && test -n "${sys_dir}"; then
 773   have_crt0="yes"
 774 fi