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_c99_formats --enable-newlib-io-c99-formats ("yes", "no", "")
  28 #   newlib_io_long_long --enable-newlib-io-long-long ("yes", "no", "")
  29 #   newlib_io_long_double --enable-newlib-io-long-double ("yes", "no", "")
  30
  31 # It sets the following shell variables:
  32 #   newlib_cflags       Special CFLAGS to use when building
  33 #   machine_dir         Subdirectory of libc/machine to configure
  34 #   sys_dir             Subdirectory of libc/sys to configure
  35 #   have_sys_mach_dir   Is there a machine subdirectory in sys subdirectory
  36 #   posix_dir           "posix" to build libc/posix, "" otherwise
  37 #   signal_dir          "signal" to build libc/signal, "" otherwise
  38 #   stdio64_dir         "stdio64" to build libc/stdio64, "" otherwise
  39 #   syscall_dir         "syscalls" to build libc/syscalls, "" otherwise
  40 #   unix_dir            "unix" to build libc/unix, "" otherwise
  41 #   use_libtool         flag: use libtool to build newlib?
  42 #   aext                library extension - needed for libtool support
  43 #   oext                object file extension - needed for libtool support
  44 #   lpfx                library object prefix - generated when no libtool
  45 #   crt1                name of crt1 object if one is provided
  46 #   crt1_dir            directory where crt1 object is found
  47 #   have_crt0           "yes"/"no" if crt0 is/isn't provided.
  48 #                       "" if crt0 is provided when sys_dir is set
  49
  50 newlib_cflags=
  51 libm_machine_dir=
  52 machine_dir=
  53 sys_dir=
  54 posix_dir=
  55 signal_dir=signal
  56 stdio_dir=stdio
  57 stdio64_dir=
  58 syscall_dir=
  59 unix_dir=
  60 mach_add_setjmp=
  61 crt1=
  62 crt1_dir=
  63 have_crt0=
  64 use_libtool=no
  65 have_sys_mach_dir=no
  66 default_newlib_io_c99_formats=no
  67 default_newlib_io_long_long=no
  68 default_newlib_io_long_double=no
  69 default_newlib_io_pos_args=no
  70 default_newlib_atexit_dynamic_alloc=yes
  71 aext=a
  72 oext=o
  73 lpfx="lib_a-"
  74
  75 case "${target_optspace}:${host}" in
  76   yes:*)
  77     newlib_cflags="${newlib_cflags} -Os"
  78     ;;
  79   :m32r-* | :d10v-* | :d30v-* | :avr-* | :m32c-* )
  80     newlib_cflags="${newlib_cflags} -Os"
  81     ;;
  82   no:* | :*)
  83     newlib_cflags="${newlib_cflags} -O2"
  84     ;;
  85 esac
  86
  87 # Get the source directories to use for the CPU type.
  88 # machine_dir should supply CPU dependent routines, such as setjmp.
  89 # newlib_cflags is passed to gcc when compiling.
  90 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
  91
  92 case "${host_cpu}" in
  93   a29k)
  94         machine_dir=a29k
  95         ;;
  96   arc)
  97         machine_dir=
  98         ;;
  99   arm)
 100         machine_dir=arm
 101         ;;
 102   avr*)
 103         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mcall-prologues"
 104         ;;
 105   bfin)
 106         machine_dir=bfin
 107         ;;
 108   cris | crisv32)
 109         machine_dir=cris
 110         ;;
 111   crx*)
 112         machine_dir=crx
 113         ;;
 114   d10v*)
 115         machine_dir=d10v
 116         ;;
 117   d30v*)
 118         machine_dir=d30v
 119         ;;
 120   ep9312)
 121         machine_dir=arm
 122         ;;
 123   fido)
 124         machine_dir=m68k
 125         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 126         ;;
 127   fr30)
 128         machine_dir=fr30
 129         ;;
 130   frv)
 131         machine_dir=frv
 132         ;;
 133   h8300)
 134         machine_dir=h8300
 135         ;;
 136   h8500)
 137         machine_dir=h8500
 138         ;;
 139   hppa*)
 140         machine_dir=hppa
 141         ;;
 142   i960)
 143         machine_dir=i960
 144         ;;
 145   i[34567]86)
 146         # Don't use for these since they provide their own setjmp.
 147         case ${host} in
 148         *-*-sco* | *-*-cygwin*)
 149                 libm_machine_dir=i386
 150                 machine_dir=i386
 151                 ;;
 152         *)
 153                 libm_machine_dir=i386
 154                 machine_dir=i386
 155                 mach_add_setjmp=true
 156                 ;;
 157         esac
 158         ;;
 159   ia64*)
 160         ;;
 161   iq2000)
 162         machine_dir=iq2000
 163         ;;
 164   m32c)
 165         machine_dir=m32c
 166         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -DABORT_PROVIDED -DSMALL_MEMORY"
 167         ;;
 168
 169   m32r*)
 170         machine_dir=m32r
 171         ;;
 172
 173   m68hc11|m6811|m68hc12|m6812)
 174         machine_dir=m68hc11
 175         newlib_cflags="-DPREFER_SIZE_OVER_SPEED -Os -mrelax"
 176         CFLAGS="-g -Os"
 177         ;;
 178
 179   m68*)
 180         machine_dir=m68k
 181         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 182         ;;
 183   m88k)
 184         machine_dir=m88k
 185         newlib_cflags="${newlib_cflags} -m88000"
 186         ;;
 187   m88110)
 188         machine_dir=m88k
 189         newlib_cflags="${newlib_cflags} -m88110"
 190         ;;
 191   mcore)
 192         ;;
 193   mep)
 194         machine_dir=mep
 195         ;;
 196   mips*)
 197         machine_dir=mips
 198         ;;
 199   mmix)
 200         ;;
 201   mn10200)
 202         machine_dir=mn10200
 203         ;;
 204   mn10300)
 205         default_newlib_io_long_long="yes"
 206         machine_dir=mn10300
 207         ;;
 208   mt*)
 209         machine_dir=mt
 210         ;;
 211   or16)
 212         ;;
 213   or32)
 214         ;;
 215   powerpc*)
 216         machine_dir=powerpc
 217         ;;
 218   sh | sh64)
 219         machine_dir=sh
 220         ;;
 221   sparc*)
 222         machine_dir=sparc
 223         # FIXME: Might wish to make MALLOC_ALIGNMENT more generic.
 224         newlib_cflags="${newlib_cflags} -DMALLOC_ALIGNMENT=8"
 225         ;;
 226   strongarm)
 227         machine_dir=arm
 228         ;;
 229   xscale)
 230         machine_dir=xscale
 231         ;;
 232   thumb)
 233         machine_dir=arm
 234         ;;
 235   tic4x|c4x)
 236         machine_dir=tic4x
 237         ;;
 238   tic80*)
 239         machine_dir=tic80
 240         ;;
 241   v70)
 242         ;;
 243   v810)
 244         ;;
 245   v850)
 246         machine_dir=v850
 247         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 248         ;;
 249   v850e)
 250         machine_dir=v850
 251         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED "
 252         ;;
 253   w65*)
 254         machine_dir=w65
 255         ;;
 256   x86_64)
 257         machine_dir=x86_64
 258         ;;
 259   xstormy16)
 260         machine_dir=xstormy16
 261         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"
 262         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"
 263         ;;
 264   z8k)
 265         machine_dir=z8k
 266         ;;
 267   spu)
 268         stdio_dir=
 269         libm_machine_dir=spu
 270         machine_dir=spu
 271         newlib_cflags="${newlib_cflags} -D_POSIX_MODE"
 272         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"
 273         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 274         newlib_cflags="${newlib_cflags} -ffunction-sections -fdata-sections "
 275         ;;
 276   *)
 277         echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2
 278         exit 1
 279         ;;
 280 esac
 281
 282 # Disable thread support if requested.
 283
 284 if [ "${newlib_multithread}" = "no" ] ; then
 285         newlib_cflags="${newlib_cflags} -D__SINGLE_THREAD__"
 286 fi
 287
 288 # Disable syscall support if requested.
 289
 290 if [ "${newlib_may_supply_syscalls}" = "no" ] ; then
 291         newlib_cflags="${newlib_cflags} -D__NO_SYSCALLS__"
 292 fi
 293
 294 # Enable multibyte support if requested or it is defaulted
 295 # for target.
 296
 297 if [ "x${newlib_mb}" = "x" ]; then
 298         case "${host}" in
 299           i[34567]86-pc-linux-*|*-*-cygwin*)
 300                 newlib_mb=yes
 301                 ;;
 302         esac
 303 fi
 304
 305 # Disable printf/scanf floating-point support if requested.
 306
 307 if [ "${newlib_io_float}" = "no" ] ; then
 308         newlib_cflags="${newlib_cflags} -DNO_FLOATING_POINT"
 309 fi
 310
 311 # Verify if shared newlib support is allowed and set appropriate variables
 312 # We don't want to use libtool for platforms that we are not going to
 313 # support shared libraries.  This is because it adds executable tests which
 314 # we don't want for most embedded platforms.
 315 case "${host}" in
 316   i[34567]86-pc-linux-*)
 317     use_libtool=yes
 318     have_sys_mach_dir=yes
 319     stdio64_dir=stdio64
 320     oext=lo
 321     lpfx=
 322     aext=la ;;
 323   *) ;; #shared library not supported for ${host}
 324 esac
 325
 326 # Get the source directories to use for the host.  unix_dir is set
 327 # to unix to get some standard Unix routines.  posix_dir is set to get some
 328 # standard Posix routines.  sys_dir should supply system dependent routines
 329 # including crt0.
 330 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 331
 332 case "${host}" in
 333   *-*-cygwin*)
 334         posix_dir=posix
 335         stdio64_dir=stdio64
 336         ;;
 337   *-*-netware*)
 338         signal_dir=
 339         sys_dir=netware
 340         ;;
 341   *-*-rtems*)                   # generic RTEMS support
 342         sys_dir=rtems
 343         posix_dir=posix
 344         unix_dir=unix
 345         ;;
 346   a29k-*-*)
 347         sys_dir=a29khif
 348         signal_dir=
 349         ;;
 350   arc-*-*)
 351         sys_dir=arc
 352         ;;
 353   arm-*-*)
 354         sys_dir=arm
 355         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 356           have_crt0="no"
 357         fi
 358         ;;
 359   bfin-*-*)
 360         sys_dir=
 361         ;;
 362   crx*)
 363         sys_dir=
 364         ;;
 365   d10v*)
 366         sys_dir=d10v
 367         ;;
 368   d30v*)
 369         sys_dir=
 370         ;;
 371   ep9312-*-*)
 372         sys_dir=arm
 373         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 374           have_crt0="no"
 375         fi
 376         ;;
 377   frv*)
 378         sys_dir=
 379         ;;
 380   h8300-*-hms*)
 381         sys_dir=h8300hms
 382         ;;
 383   h8300-*-elf*)
 384         sys_dir=h8300hms
 385         ;;
 386   h8300-*-coff*)
 387         sys_dir=h8300hms
 388         ;;
 389   h8300-*-xray*)
 390         sys_dir=h8300xray
 391         ;;
 392   h8500-*-hms*)
 393         sys_dir=h8500hms
 394         ;;
 395   h8500-*-elf*)
 396         sys_dir=h8500hms
 397         ;;
 398   i[34567]86-*-rdos*)
 399         sys_dir=rdos
 400         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 401         ;;
 402   i[34567]86-*-sco*)
 403         sys_dir=sysvi386
 404         unix_dir=unix
 405         ;;
 406   i[34567]86-pc-linux-*)
 407         sys_dir=linux
 408         unix_dir=unix
 409         posix_dir=posix
 410         crt1=crt1.o
 411         crt1_dir=libc/sys/${sys_dir}
 412         gcc_dir=`gcc -print-search-dirs | awk '/^install:/{print $2}'`
 413         default_newlib_io_c99_formats="yes"
 414         default_newlib_io_long_double="yes"
 415         default_newlib_io_long_long="yes"
 416         default_newlib_io_pos_args="yes"
 417         #newlib_cflags="${newlib_cflags} -Werror" # DEBUGGING ONLY;BREAKS BUILD
 418         newlib_cflags="${newlib_cflags} -Wall"
 419         newlib_cflags="${newlib_cflags} -D_I386MACH_ALLOW_HW_INTERRUPTS"
 420         newlib_cflags="${newlib_cflags} -DHAVE_FCNTL"
 421         newlib_cflags="${newlib_cflags} -DHAVE_GETOPT"
 422         # --- Required when building a shared library ------------------------
 423         newlib_cflags="${newlib_cflags} -fPIC -D_I386MACH_NEED_SOTYPE_FUNCTION"
 424         # --- The three lines below are optional ------------------------------
 425         ##newlib_cflags="${newlib_cflags} -nostdinc"
 426         ##newlib_cflags="${newlib_cflags} -I`newlib-flags --kernel-dir`/include"
 427         ##newlib_cflags="${newlib_cflags} -idirafter ${gcc_dir}include"
 428         ;;
 429
 430   m68hc11-*-*|m6811-*-*|m6812-*-*|m68hc12-*-*)
 431         ;;
 432
 433   m68k-sun-sunos*)
 434         unix_dir=unix
 435         ;;
 436   m8*-bug-*)
 437         sys_dir=m88kbug
 438         ;;
 439   mep-*-*)
 440         default_newlib_io_long_long="yes"
 441         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 442         ;;
 443   mips*-dec-*)
 444         sys_dir=decstation
 445         ;;
 446   mmix-knuth-mmixware)
 447         sys_dir=mmixware
 448         ;;
 449   powerpcle-*-pe)
 450         posix_dir=posix
 451         ;;
 452   sh*-*)
 453         sys_dir=sh
 454         ;;
 455   sparc-sun-sunos*)
 456         sys_dir=sun4
 457         unix_dir=unix
 458         ;;
 459   sparc64*)
 460         sys_dir=sparc64
 461         unix_dir=unix
 462         ;;
 463   spu-*-*)
 464         default_newlib_io_long_long="yes"
 465         default_newlib_atexit_dynamic_alloc="no"
 466         ;;
 467   strongarm-*-*)
 468         sys_dir=arm
 469         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 470           have_crt0="no"
 471         fi
 472         ;;
 473   thumb-*-*)
 474         sys_dir=arm
 475         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 476           have_crt0="no"
 477         fi
 478         ;;
 479   tic80*)
 480         sys_dir=tic80
 481         ;;
 482   v70-nec-*)
 483         sys_dir=sysvnecv70
 484         ;;
 485   v810-*-*)
 486         sys_dir=sysnec810
 487         ;;
 488   v850-*-*)
 489         sys_dir=sysnecv850
 490         ;;
 491   v850e-*-*)
 492         sys_dir=sysnecv850
 493         ;;
 494   v850ea-*-*)
 495         sys_dir=sysnecv850
 496         ;;
 497   w65-*-*)
 498         sys_dir=w65
 499         ;;
 500   xscale-*-*)
 501         sys_dir=arm
 502         if [ "x${newlib_may_supply_syscalls}" = "xno" ] ; then
 503           have_crt0="no"
 504         fi
 505         ;;
 506   z8k-*-coff)
 507         sys_dir=z8ksim
 508         ;;
 509 esac
 510
 511 # Host specific flag settings -- usually for features that are not
 512 # general enough or broad enough to be handled above.
 513 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 514
 515 case "${host}" in
 516   *-*-cygwin*)
 517         test -z "$cygwin_srcdir" && cygwin_srcdir=`cd ${srcdir}/../winsup/cygwin; pwd`
 518         export cygwin_srcdir
 519         default_newlib_io_c99_formats="yes"
 520         default_newlib_io_long_long="yes"
 521         default_newlib_io_long_double="yes"
 522         default_newlib_io_pos_args="yes"
 523         CC="${CC} -I${cygwin_srcdir}/include"
 524         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DSIGNAL_PROVIDED -D_COMPILING_NEWLIB -DHAVE_BLKSIZE -DHAVE_FCNTL -DMALLOC_PROVIDED"
 525         syscall_dir=syscalls
 526         ;;
 527 # RTEMS supplies its own versions of some routines:
 528 #       malloc()            (reentrant version)
 529 #       exit()              RTEMS has a "global" reent to flush
 530 #       signal()/raise()    RTEMS has its own including pthread signals
 531 #       _XYZ_r()            RTEMS has its own reentrant routines
 532 #
 533 #  NOTE: When newlib malloc uses a semaphore, RTEMS will switch to that.
 534   *-*-rtems*)
 535         default_newlib_io_long_long="yes"
 536         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DEXIT_PROVIDED -DMISSING_SYSCALL_NAMES -DSIGNAL_PROVIDED -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_NANOSLEEP -DHAVE_FCNTL"
 537         # turn off unsupported items in posix directory
 538         newlib_cflags="${newlib_cflags} -D_NO_GETLOGIN -D_NO_GETPWENT -D_NO_GETUT -D_NO_GETPASS -D_NO_SIGSET"
 539         ;;
 540 # VxWorks supplies its own version of malloc, and the newlib one
 541 # doesn't work because VxWorks does not have sbrk.
 542   *-wrs-vxworks*)
 543         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DMISSING_SYSCALL_NAMES -DHAVE_FCNTL"
 544         ;;
 545 # UDI doesn't have exec, so system() should fail the right way
 546   a29k-amd-udi)
 547         newlib_cflags="${newlib_cflags} -DNO_EXEC"
 548         syscall_dir=syscalls
 549         ;;
 550   arc-*-*)
 551         syscall_dir=syscalls
 552         ;;
 553   arm-*-pe)
 554         syscall_dir=syscalls
 555         ;;
 556   arm-*-*)
 557         syscall_dir=syscalls
 558 # If newlib is supplying syscalls, select which debug protocol is being used.
 559 # ARM_RDP_MONITOR selects the Demon monitor.
 560 # ARM_RDI_MONITOR selects the Angel monitor.
 561 # If neither are defined, then hard coded defaults will be used
 562 # to create the program's environment.
 563 # If --disable-newlib-supplied-syscalls is specified, then the end-user
 564 # may specify the protocol via gcc spec files supplied by libgloss.
 565 # See also thumb below.
 566         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 567 #         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 568           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 569         fi
 570         ;;
 571   arc*)
 572         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED"
 573         ;;
 574   avr*)
 575         newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 576         ;;
 577   bfin*)
 578         syscall_dir=syscalls
 579         ;;
 580   cris-*-* | crisv32-*-*)
 581         default_newlib_io_long_long="yes"
 582         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -D_USE_WRITE -DCOMPACT_CTYPE"
 583         syscall_dir=syscalls
 584         ;;
 585   crx-*-*)
 586         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DMISSING_SYSCALL_NAMES"
 587         syscall_dir=
 588         ;;
 589   d10v*)
 590         newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
 591         syscall_dir=syscalls
 592         ;;
 593   d30v*)
 594         newlib_cflags="${newlib_cflags} -DABORT_MESSAGE -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 595         syscall_dir=
 596         ;;
 597   ep9312-*-*)
 598         syscall_dir=syscalls
 599         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 600           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 601         fi
 602         ;;
 603   fido-*-elf)
 604         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
 605         syscall_dir=
 606         ;;
 607   fr30-*-*)
 608         syscall_dir=syscalls
 609         ;;
 610   frv-*-*)
 611         syscall_dir=syscalls
 612         default_newlib_io_long_long="yes"
 613         ;;
 614   h8300*-*-*)
 615         syscall_dir=syscalls
 616         default_newlib_io_long_long="yes"
 617         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 618         # Simulator only extensions for H8300.
 619         # Uncomment the next line to enable them.
 620         # newlib_cflags="${newlib_cflags} -D__SIMULATOR__"
 621         ;;
 622   h8500-*-*)
 623         syscall_dir=syscalls
 624         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 625         ;;
 626   i[34567]86-*-sco*)
 627         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_FCNTL"
 628         ;;
 629   i[34567]86-*-netware*)
 630         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DABORT_PROVIDED -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DHAVE_FCNTL"
 631         ;;
 632   iq2000*)
 633         syscall_dir=syscalls
 634         default_newlib_io_long_long="yes"
 635         ;;
 636   m32r-*-*)
 637         # Pass -msdata=sdata so _impure_ptr goes in .sdata.
 638         # We don't generate sda relocs however for upward compatibility.
 639         # FIXME: This is necessary because the default multilib doesn't
 640         # use --print-multi-lib.
 641         newlib_cflags="${newlib_cflags} -msdata=sdata"
 642         syscall_dir=syscalls
 643         ;;
 644   m68hc11-*-*|m6811-*-*|m68hc12-*-*|m6812-*-*)
 645         newlib_cflags="${newlib_cflags} -DNO_EXEC -DABORT_PROVIDED -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 646         ;;
 647   m68k-unknown-elf)
 648         newlib_cflags="${newlib_cflags} -DHAVE_RENAME -DHAVE_SYSTEM -DMISSING_SYSCALL_NAMES"
 649         syscall_dir=
 650         ;;
 651   mcore-*-*)
 652         syscall_dir=syscalls
 653         ;;
 654   mips64vr*-*-*)
 655         default_newlib_io_long_long="yes"
 656         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 657         ;;
 658   mips*-*-elf*)
 659         default_newlib_io_long_long="yes"
 660         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 661         ;;
 662   mmix-*)
 663         syscall_dir=syscalls
 664         # We need every symbol 32-bit aligned, so the invalid
 665         # construct with attribute ((alias ("_ctype_b+127"))) breaks.
 666         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 667         ;;
 668   mn10?00-*-*)
 669         syscall_dir=syscalls
 670         ;;
 671   powerpc*-*-eabialtivec*)
 672         default_newlib_io_long_long="yes"
 673         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 674         ;;
 675   powerpc*-*-eabispe*)
 676         default_newlib_io_long_long="yes"
 677         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 678         ;;
 679   powerpc*-*-eabi* | \
 680   powerpc*-*-elf* | \
 681   powerpc*-*-linux* | \
 682   powerpc*-*-rtem* | \
 683   powerpc*-*-sysv* | \
 684   powerpc*-*-solaris*)
 685         default_newlib_io_long_long="yes"
 686         newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"
 687         ;;
 688   powerpcle-*-pe)
 689         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL"
 690         syscall_dir=syscalls
 691         ;;
 692   sh*-*-*)
 693         default_newlib_io_long_long="yes"
 694         syscall_dir=syscalls
 695         ;;
 696   sparc-sun-sunos*)
 697         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"
 698         ;;
 699   sparc64-*-*)
 700         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_BLKSIZE -DHAVE_FCNTL"
 701         # This either belongs elsewhere or nowhere. But I need *something*,
 702         # so for now it's here ...
 703         case "${host_os}" in
 704           aoutv8 | *32p)
 705                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=32" ;;
 706           *)
 707                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=64" ;;
 708         esac
 709         ;;
 710   strongarm-*-*)
 711         syscall_dir=syscalls
 712         ;;
 713   thumb-*-pe)
 714         syscall_dir=syscalls
 715 # Don't use the debugging protocols just yet.
 716         ;;
 717   thumb-*-*)
 718         syscall_dir=syscalls
 719 # If newlib is supplying syscalls, select which debug protocol is being used.
 720 # ARM_RDP_MONITOR selects the Demon monitor.
 721 # ARM_RDI_MONITOR selects the Angel monitor.
 722 # If neither are defined, then hard coded defaults will be used
 723 # to create the program's environment.
 724 # If --disable-newlib-supplied-syscalls is specified, then the end-user
 725 # may specify the protocol via gcc spec files supplied by libgloss.
 726         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 727 #         newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 728           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 729         fi
 730         ;;
 731   tic80*)
 732         syscall_dir=syscalls
 733         ;;
 734   v850-*-*)
 735         syscall_dir=syscalls
 736         ;;
 737   v850e-*-*)
 738         syscall_dir=syscalls
 739         ;;
 740   v850ea-*-*)
 741         syscall_dir=syscalls
 742         ;;
 743   w65-*-*)
 744         syscall_dir=syscalls
 745         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 746         ;;
 747   xscale-*-*)
 748         syscall_dir=syscalls
 749         newlib_cflags="${newlib_cflags} -DHAVE_SYSTEM -DHAVE_RENAME"
 750         if [ "x${newlib_may_supply_syscalls}" = "xyes" ] ; then
 751           newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 752         fi
 753         ;;
 754   xstormy16-*-*)
 755         syscall_dir=syscalls
 756         ;;
 757   z8k-*-*)
 758         syscall_dir=syscalls
 759         ;;
 760   *)
 761         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 762         syscall_dir=
 763         ;;
 764 esac
 765
 766 # Use defaults for certain settings if not specified by user
 767
 768 # Enable C99 format support in I/O routines if requested.
 769 if [ "x${newlib_io_c99_formats}" = "x" ]; then
 770         if [ ${default_newlib_io_c99_formats} = "yes" ]; then
 771                 newlib_io_c99_formats="yes";
 772         fi
 773 fi
 774
 775 # Enable long long support in I/O routines if requested.
 776 if [ "x${newlib_io_long_long}" = "x" ]; then
 777         if [ ${default_newlib_io_long_long} = "yes" ]; then
 778                 newlib_io_long_long="yes";
 779         fi
 780 fi
 781
 782 # Enable long double support in I/O routines if requested.
 783 if [ "x${newlib_io_long_double}" = "x" ]; then
 784         if [ ${default_newlib_io_long_double} = "yes" ]; then
 785                 newlib_io_long_double="yes";
 786         fi
 787 fi
 788
 789 # Enable printf positional argument support if requested.
 790 if [ "x${newlib_io_pos_args}" = "x" ]; then
 791         if [ ${default_newlib_io_pos_args} = "yes" ]; then
 792                 newlib_io_pos_args="yes";
 793         fi
 794 fi
 795
 796 # Disable atexit dynamic allocation if requested.
 797 if [ "x${newlib_atexit_dynamic_alloc}" = "x" ]; then
 798         if [ ${default_newlib_atexit_dynamic_alloc} = "yes" ]; then
 799                 newlib_atexit_dynamic_alloc="yes";
 800         fi
 801 fi
 802
 803 if test -z "${have_crt0}" && test -n "${sys_dir}"; then
 804   have_crt0="yes"
 805 fi