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         stdio_dir=
 261         libm_machine_dir=spu
 262         machine_dir=spu
 263         newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
 264         ;;
 265   *)
 266         echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2
 267         exit 1
 268         ;;
 269 esac
 270
 271 # Disable thread support if requested.
 272
 273 if [ "${newlib_multithread}" = "no" ] ; then
 274         newlib_cflags="${newlib_cflags} -D__SINGLE_THREAD__"
 275 fi
 276
 277 # Disable syscall support if requested.
 278
 279 if [ "${newlib_may_supply_syscalls}" = "no" ] ; then
 280         newlib_cflags="${newlib_cflags} -D__NO_SYSCALLS__"
 281 fi
 282
 283 # Enable multibyte support if requested or it is defaulted
 284 # for target.
 285
 286 if [ "x${newlib_mb}" = "x" ]; then
 287         case "${host}" in
 288           i[34567]86-pc-linux-*|*-*-cygwin*)
 289                 newlib_mb=yes
 290                 ;;
 291         esac
 292 fi
 293
 294 # Disable printf/scanf floating-point support if requested.
 295
 296 if [ "${newlib_io_float}" = "no" ] ; then
 297         newlib_cflags="${newlib_cflags} -DNO_FLOATING_POINT"
 298 fi
 299
 300 # Verify if shared newlib support is allowed and set appropriate variables
 301 # We don't want to use libtool for platforms that we are not going to
 302 # support shared libraries.  This is because it adds executable tests which
 303 # we don't want for most embedded platforms.
 304 case "${host}" in
 305   i[34567]86-pc-linux-*)
 306     use_libtool=yes
 307     have_sys_mach_dir=yes
 308     stdio64_dir=stdio64
 309     oext=lo
 310     lpfx=
 311     aext=la ;;
 312   *) ;; #shared library not supported for ${host}
 313 esac
 314
 315 # Get the source directories to use for the host.  unix_dir is set
 316 # to unix to get some standard Unix routines.  posix_dir is set to get some
 317 # standard Posix routines.  sys_dir should supply system dependent routines
 318 # including crt0.
 319 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 320
 321 case "${host}" in
 322   *-*-cygwin*)
 323         posix_dir=posix
 324         stdio64_dir=stdio64
 325         ;;
 326   *-*-netware*)
 327         signal_dir=
 328         sys_dir=netware
 329         ;;
 330   *-*-rtems*)                   # generic RTEMS support
 331         sys_dir=rtems
 332         # RTEMS POSIX support is all inside RTEMS
 333         ;;
 334   a29k-*-*)
 335         sys_dir=a29khif
 336         signal_dir=
 337         ;;
 338   arc-*-*)
 339         sys_dir=arc
 340         ;;
 341   arm-*-*)
 342         sys_dir=arm
 343         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 344           have_crt0="no"
 345         fi
 346         ;;
 347   bfin-*-*)
 348         sys_dir=
 349         ;;
 350   crx*)
 351         sys_dir=
 352         ;;
 353   d10v*)
 354         sys_dir=d10v
 355         ;;
 356   d30v*)
 357         sys_dir=
 358         ;;
 359   ep9312-*-*)
 360         sys_dir=arm
 361         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 362           have_crt0="no"
 363         fi
 364         ;;
 365   frv*)
 366         sys_dir=
 367         ;;
 368   h8300-*-hms*)
 369         sys_dir=h8300hms
 370         ;;
 371   h8300-*-elf*)
 372         sys_dir=h8300hms
 373         ;;
 374   h8300-*-coff*)
 375         sys_dir=h8300hms
 376         ;;
 377   h8300-*-xray*)
 378         sys_dir=h8300xray
 379         ;;
 380   h8500-*-hms*)
 381         sys_dir=h8500hms
 382         ;;
 383   h8500-*-elf*)
 384         sys_dir=h8500hms
 385         ;;
 386   i[34567]86-*-rdos*)
 387         sys_dir=rdos
 388         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 389         ;;
 390   i[34567]86-*-sco*)
 391         sys_dir=sysvi386
 392         unix_dir=unix
 393         ;;
 394   i[34567]86-pc-linux-*)
 395         sys_dir=linux
 396         unix_dir=unix
 397         posix_dir=posix
 398         crt1=crt1.o
 399         crt1_dir=libc/sys/${sys_dir}
 400         gcc_dir=`gcc -print-search-dirs | awk '/^install:/{print $2}'`
 401         default_newlib_io_long_double="yes"
 402         default_newlib_io_long_long="yes"
 403         default_newlib_io_pos_args="yes"
 404         #newlib_cflags="${newlib_cflags} -Werror" # DEBUGGING ONLY;BREAKS BUILD
 405         newlib_cflags="${newlib_cflags} -Wall"
 406         newlib_cflags="${newlib_cflags} -D_I386MACH_ALLOW_HW_INTERRUPTS"
 407         newlib_cflags="${newlib_cflags} -DHAVE_FCNTL"
 408         # --- Required when building a shared library ------------------------
 409         newlib_cflags="${newlib_cflags} -fPIC -D_I386MACH_NEED_SOTYPE_FUNCTION"
 410         # --- The three lines below are optional ------------------------------
 411         ##newlib_cflags="${newlib_cflags} -nostdinc"
 412         ##newlib_cflags="${newlib_cflags} -I`newlib-flags --kernel-dir`/include"
 413         ##newlib_cflags="${newlib_cflags} -idirafter ${gcc_dir}include"
 414         ;;
 415
 416   m68hc11-*-*|m6811-*-*|m6812-*-*|m68hc12-*-*)
 417         ;;
 418
 419   m68k-sun-sunos*)
 420         unix_dir=unix
 421         ;;
 422   m8*-bug-*)
 423         sys_dir=m88kbug
 424         ;;
 425   mips*-dec-*)
 426         sys_dir=decstation
 427         ;;
 428   mmix-knuth-mmixware)
 429         sys_dir=mmixware
 430         ;;
 431   powerpcle-*-pe)
 432         posix_dir=posix
 433         ;;
 434   sh*-*)
 435         sys_dir=sh
 436         ;;
 437   sparc-sun-sunos*)
 438         sys_dir=sun4
 439         unix_dir=unix
 440         ;;
 441   sparc64*)
 442         sys_dir=sparc64
 443         unix_dir=unix
 444         ;;
 445   spu-*-*)
 446         default_newlib_io_long_long="yes"
 447         default_newlib_atexit_dynamic_alloc="no"
 448         ;;
 449   strongarm-*-*)
 450         sys_dir=arm
 451         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 452           have_crt0="no"
 453         fi
 454         ;;
 455   thumb-*-*)
 456         sys_dir=arm
 457         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 458           have_crt0="no"
 459         fi
 460         ;;
 461   tic80*)
 462         sys_dir=tic80
 463         ;;
 464   v70-nec-*)
 465         sys_dir=sysvnecv70
 466         ;;
 467   v810-*-*)
 468         sys_dir=sysnec810
 469         ;;
 470   v850-*-*)
 471         sys_dir=sysnecv850
 472         ;;
 473   v850e-*-*)
 474         sys_dir=sysnecv850
 475         ;;
 476   v850ea-*-*)
 477         sys_dir=sysnecv850
 478         ;;
 479   w65-*-*)
 480         sys_dir=w65
 481         ;;
 482   xscale-*-*)
 483         sys_dir=arm
 484         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 485           have_crt0="no"
 486         fi
 487         ;;
 488   z8k-*-coff)
 489         sys_dir=z8ksim
 490         ;;
 491 esac
 492
 493 # Host specific flag settings -- usually for features that are not
 494 # general enough or broad enough to be handled above.
 495 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 496
 497 case "${host}" in
 498   *-*-cygwin*)
 499         test -z "$cygwin_srcdir" && cygwin_srcdir=`cd ${srcdir}/../winsup/cygwin; pwd`
 500         export cygwin_srcdir
 501         default_newlib_io_long_long="yes"
 502         default_newlib_io_long_double="yes"
 503         default_newlib_io_pos_args="yes"
 504         CC="${CC} -I${cygwin_srcdir}/include"
 505         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DSIGNAL_PROVIDED -D_COMPILING_NEWLIB -DHAVE_BLKSIZE -DHAVE_FCNTL -DMALLOC_PROVIDED"
 506         syscall_dir=syscalls
 507         ;;
 508 # RTEMS supplies its own versions of some routines:
 509 #       malloc()            (reentrant version)
 510 #       exit()              RTEMS has a "global" reent to flush
 511 #       signal()/raise()    RTEMS has its own including pthread signals
 512 #       _XYZ_r()            RTEMS has its own reentrant routines
 513 #
 514 #  NOTE: When newlib malloc uses a semaphore, RTEMS will switch to that.
 515   *-*-rtems*)
 516         default_newlib_io_long_long="yes"
 517         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DEXIT_PROVIDED -DMISSING_SYSCALL_NAMES -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_OPENDIR -DNO_EXEC -DHAVE_FCNTL"
 518         ;;
 519 # VxWorks supplies its own version of malloc, and the newlib one
 520 # doesn't work because VxWorks does not have sbrk.
 521   *-wrs-vxworks*)
 522         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DMISSING_SYSCALL_NAMES -DHAVE_FCNTL"
 523         ;;
 524 # UDI doesn't have exec, so system() should fail the right way
 525   a29k-amd-udi)
 526         newlib_cflags="${newlib_cflags} -DNO_EXEC"
 527         syscall_dir=syscalls
 528         ;;
 529   arc-*-*)
 530         syscall_dir=syscalls
 531         ;;
 532   arm-*-pe)
 533         syscall_dir=syscalls
 534         ;;
 535   arm-*-*)
 536         syscall_dir=syscalls
 537 # If newlib is supplying syscalls, select which debug protocol is being used.
 538 # ARM_RDP_MONITOR selects the Demon monitor.
 539 # ARM_RDI_MONITOR selects the Angel monitor.
 540 # If neither are defined, then hard coded defaults will be used
 541 # to create the program's environment.
 542 # If --disable-newlib-supplied-syscalls is specified, then the end-user
 543 # may specify the protocol via gcc spec files supplied by libgloss.
 544 # See also thumb below.
 545         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 546 #         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 547           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 548         fi
 549         ;;
 550   arc*)
 551         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"
 552         ;;
 553   avr*)
 554         newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 555         ;;
 556   bfin*)
 557         syscall_dir=syscalls
 558         ;;
 559   cris-*-* | crisv32-*-*)
 560         default_newlib_io_long_long="yes"
 561         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -D_USE_WRITE -DCOMPACT_CTYPE"
 562         syscall_dir=syscalls
 563         ;;
 564   crx-*-*)
 565         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DMISSING_SYSCALL_NAMES"
 566         syscall_dir=
 567         ;;
 568   d10v*)
 569         newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
 570         syscall_dir=syscalls
 571         ;;
 572   d30v*)
 573         newlib_cflags="${newlib_cflags} -DABORT_MESSAGE -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 574         syscall_dir=
 575         ;;
 576   ep9312-*-*)
 577         syscall_dir=syscalls
 578         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 579           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 580         fi
 581         ;;
 582   fido-*-elf)
 583         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
 584         syscall_dir=
 585         ;;
 586   fr30-*-*)
 587         syscall_dir=syscalls
 588         ;;
 589   frv-*-*)
 590         syscall_dir=syscalls
 591         default_newlib_io_long_long="yes"
 592         ;;
 593   h8300*-*-*)
 594         syscall_dir=syscalls
 595         default_newlib_io_long_long="yes"
 596         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 597         # Simulator only extensions for H8300.
 598         # Uncomment the next line to enable them.
 599         # newlib_cflags="${newlib_cflags} -D__SIMULATOR__"
 600         ;;
 601   h8500-*-*)
 602         syscall_dir=syscalls
 603         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 604         ;;
 605   i[34567]86-*-sco*)
 606         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_FCNTL"
 607         ;;
 608   i[34567]86-*-netware*)
 609         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DABORT_PROVIDED -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DHAVE_FCNTL"
 610         ;;
 611   iq2000*)
 612         syscall_dir=syscalls
 613         default_newlib_io_long_long="yes"
 614         ;;
 615   m32r-*-*)
 616         # Pass -msdata=sdata so _impure_ptr goes in .sdata.
 617         # We don't generate sda relocs however for upward compatibility.
 618         # FIXME: This is necessary because the default multilib doesn't
 619         # use --print-multi-lib.
 620         newlib_cflags="${newlib_cflags} -msdata=sdata"
 621         syscall_dir=syscalls
 622         ;;
 623   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 624         newlib_cflags="${newlib_cflags} -DNO_EXEC -DABORT_PROVIDED -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 625         ;;
 626   m68k-unknown-elf)
 627         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
 628         syscall_dir=
 629         ;;
 630   mcore-*-*)
 631         syscall_dir=syscalls
 632         ;;
 633   mips64vr*-*-*)
 634         default_newlib_io_long_long="yes"
 635         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 636         ;;
 637   mips*-*-elf*)
 638         default_newlib_io_long_long="yes"
 639         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 640         ;;
 641   mmix-*)
 642         syscall_dir=syscalls
 643         # We need every symbol 32-bit aligned, so the invalid
 644         # construct with attribute ((alias ("_ctype_b+127"))) breaks.
 645         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 646         ;;
 647   mn10?00-*-*)
 648         syscall_dir=syscalls
 649         ;;
 650   powerpc*-*-eabialtivec*)
 651         default_newlib_io_long_long="yes"
 652         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 653         ;;
 654   powerpc*-*-eabispe*)
 655         default_newlib_io_long_long="yes"
 656         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 657         ;;
 658   powerpc*-*-eabi* | \
 659   powerpc*-*-elf* | \
 660   powerpc*-*-linux* | \
 661   powerpc*-*-rtem* | \
 662   powerpc*-*-sysv* | \
 663   powerpc*-*-solaris*)
 664         default_newlib_io_long_long="yes"
 665         newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"
 666         ;;
 667   powerpcle-*-pe)
 668         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL"
 669         syscall_dir=syscalls
 670         ;;
 671   sh*-*-*)
 672         default_newlib_io_long_long="yes"
 673         syscall_dir=syscalls
 674         ;;
 675   sparc-sun-sunos*)
 676         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"
 677         ;;
 678   sparc64-*-*)
 679         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_BLKSIZE -DHAVE_FCNTL"
 680         # This either belongs elsewhere or nowhere. But I need *something*,
 681         # so for now it's here ...
 682         case "${host_os}" in
 683           aoutv8 | *32p)
 684                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=32" ;;
 685           *)
 686                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=64" ;;
 687         esac
 688         ;;
 689   strongarm-*-*)
 690         syscall_dir=syscalls
 691         ;;
 692   thumb-*-pe)
 693         syscall_dir=syscalls
 694 # Don't use the debugging protocols just yet.
 695         ;;
 696   thumb-*-*)
 697         syscall_dir=syscalls
 698 # If newlib is supplying syscalls, select which debug protocol is being used.
 699 # ARM_RDP_MONITOR selects the Demon monitor.
 700 # ARM_RDI_MONITOR selects the Angel monitor.
 701 # If neither are defined, then hard coded defaults will be used
 702 # to create the program's environment.
 703 # If --disable-newlib-supplied-syscalls is specified, then the end-user
 704 # may specify the protocol via gcc spec files supplied by libgloss.
 705         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 706 #         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 707           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 708         fi
 709         ;;
 710   tic80*)
 711         syscall_dir=syscalls
 712         ;;
 713   v850-*-*)
 714         syscall_dir=syscalls
 715         ;;
 716   v850e-*-*)
 717         syscall_dir=syscalls
 718         ;;
 719   v850ea-*-*)
 720         syscall_dir=syscalls
 721         ;;
 722   w65-*-*)
 723         syscall_dir=syscalls
 724         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 725         ;;
 726   xscale-*-*)
 727         syscall_dir=syscalls
 728         newlib_cflags="${newlib_cflags} -DHAVE_SYSTEM -DHAVE_RENAME"
 729         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 730           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 731         fi
 732         ;;
 733   xstormy16-*-*)
 734         syscall_dir=syscalls
 735         ;;
 736   z8k-*-*)
 737         syscall_dir=syscalls
 738         ;;
 739   *)
 740         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 741         syscall_dir=
 742         ;;
 743 esac
 744
 745 # Use defaults for certain settings if not specified by user
 746
 747 # Enable long long support in I/O routines if requested.
 748 if [ "x${newlib_io_long_long}" = "x" ]; then
 749         if [ ${default_newlib_io_long_long} = "yes" ]; then
 750                 newlib_io_long_long="yes";
 751         fi
 752 fi
 753
 754 # Enable long double support in I/O routines if requested.
 755 if [ "x${newlib_io_long_double}" = "x" ]; then
 756         if [ ${default_newlib_io_long_double} = "yes" ]; then
 757                 newlib_io_long_double="yes";
 758         fi
 759 fi
 760
 761 # Enable printf positional argument support if requested.
 762 if [ "x${newlib_io_pos_args}" = "x" ]; then
 763         if [ ${default_newlib_io_pos_args} = "yes" ]; then
 764                 newlib_io_pos_args="yes";
 765         fi
 766 fi
 767
 768 # Disable atexit dynamic allocation if requested.
 769 if [ "x${newlib_atexit_dynamic_alloc}" = "x" ]; then
 770         if [ ${default_newlib_atexit_dynamic_alloc} = "yes" ]; then
 771                 newlib_atexit_dynamic_alloc="yes";
 772         fi
 773 fi
 774
 775 if test -z "${have_crt0}" && test -n "${sys_dir}"; then
 776   have_crt0="yes"
 777 fi