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
  26 # It sets the following shell variables:
  27 #   newlib_cflags       Special CFLAGS to use when building
  28 #   machine_dir         Subdirectory of libc/machine to configure
  29 #   sys_dir             Subdirectory of libc/sys to configure
  30 #   posix_dir           "posix" to build libc/posix, "" otherwise
  31 #   signal_dir          "signal" to build libc/signal, "" otherwise
  32 #   syscall_dir         "syscalls" to build libc/syscalls, "" otherwise
  33 #   unix_dir            "unix" to build libc/unix, "" otherwise
  34 #   use_libtool         flag: use libtool to build newlib?
  35 #   aext                library extension - needed for libtool support
  36 #   oext                object file extension - needed for libtool support
  37
  38 newlib_cflags=
  39 libm_machine_dir=
  40 machine_dir=
  41 sys_dir=
  42 posix_dir=
  43 signal_dir=signal
  44 syscall_dir=
  45 unix_dir=
  46 mach_add_setjmp=
  47 use_libtool=no
  48 aext=a
  49 oext=o
  50
  51 case "${target_optspace}:${host}" in
  52   yes:*)
  53     newlib_cflags="${newlib_cflags} -Os"
  54     ;;
  55   :m32r-* | :d10v-* | :d30v-* | :avr-*)
  56     newlib_cflags="${newlib_cflags} -Os"
  57     ;;
  58   no:* | :*)
  59     newlib_cflags="${newlib_cflags} -O2"
  60     ;;
  61 esac
  62
  63 # Get the source directories to use for the CPU type.
  64 # machine_dir should supply CPU dependent routines, such as setjmp.
  65 # newlib_cflags is passed to gcc when compiling.
  66 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
  67
  68 case "${host_cpu}" in
  69   a29k)
  70         machine_dir=a29k
  71         ;;
  72   arc)
  73         machine_dir=
  74         ;;
  75   arm)
  76         machine_dir=arm
  77         ;;
  78   avr*)
  79         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mcall-prologues"
  80         ;;
  81
  82   d10v*)
  83         machine_dir=d10v
  84         ;;
  85   d30v*)
  86         machine_dir=d30v
  87         ;;
  88   fr30)
  89         machine_dir=fr30
  90         ;;
  91   h8300)
  92         machine_dir=h8300
  93         ;;
  94   h8500)
  95         machine_dir=h8500
  96         ;;
  97   hppa*)
  98         machine_dir=hppa
  99         ;;
 100   i960)
 101         machine_dir=i960
 102         ;;
 103   i[3456]86)
 104         # Don't use for these since they provide their own setjmp.
 105         case ${host} in
 106         *-*-go32 | *-*-sco* | *-*-cygwin*)
 107                 libm_machine_dir=i386
 108                 machine_dir=i386
 109                 ;;
 110         *)
 111                 libm_machine_dir=i386
 112                 machine_dir=i386
 113                 mach_add_setjmp=true
 114                 ;;
 115         esac
 116         ;;
 117   ia64*)
 118         ;;
 119   m32r*)
 120         machine_dir=m32r
 121         ;;
 122   m68*)
 123         machine_dir=m68k
 124         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 125         ;;
 126   m88k)
 127         machine_dir=m88k
 128         newlib_cflags="${newlib_cflags} -m88000"
 129         ;;
 130   m88110)
 131         machine_dir=m88k
 132         newlib_cflags="${newlib_cflags} -m88110"
 133         ;;
 134   mcore)
 135         ;;
 136   mips*)
 137         machine_dir=mips
 138         ;;
 139   mmix)
 140         ;;
 141   mn10200)
 142         machine_dir=mn10200
 143         ;;
 144   mn10300)
 145         machine_dir=mn10300
 146         ;;
 147   or16)
 148         ;;
 149   or32)
 150         ;;
 151   powerpc*)
 152         machine_dir=powerpc
 153         ;;
 154   sh | sh64)
 155         machine_dir=sh
 156         ;;
 157   sparc*)
 158         machine_dir=sparc
 159         # FIXME: Might wish to make MALLOC_ALIGNMENT more generic.
 160         newlib_cflags="${newlib_cflags} -DMALLOC_ALIGNMENT=8"
 161         ;;
 162   strongarm)
 163         machine_dir=arm
 164         ;;
 165   xscale)
 166         machine_dir=xscale
 167         ;;
 168   thumb)
 169         machine_dir=arm
 170         ;;
 171   tic80*)
 172         machine_dir=tic80
 173         ;;
 174   v70)
 175         ;;
 176   v810)
 177         ;;
 178   v850)
 179         machine_dir=v850
 180         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 181         ;;
 182   v850e)
 183         machine_dir=v850
 184         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 185         ;;
 186   v850ea)
 187         machine_dir=v850
 188         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 189         ;;
 190   w65*)
 191         machine_dir=w65
 192         ;;
 193   xstormy16)
 194         machine_dir=xstormy16
 195         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"
 196         ;;
 197   z8k)
 198         machine_dir=z8k
 199         ;;
 200   *)
 201         echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2
 202         exit 1
 203         ;;
 204 esac
 205
 206 # Enable multibyte support if requested.
 207
 208 if [ "${newlib_mb}" = "yes" ] ; then
 209         newlib_cflags="${newlib_cflags} -DMB_CAPABLE"
 210 fi
 211
 212 # Verify if shared newlib support is allowed and set appropriate variables
 213 # We don't want to use libtool for platforms that we are not going to
 214 # support shared libraries.  This is because it adds executable tests which
 215 # we don't want for most embedded platforms.
 216 case "${host}" in
 217   i[3456]86-pc-linux-*)
 218     use_libtool=yes
 219     oext=lo
 220     aext=la ;;
 221   *) ;; #shared library not supported for ${host}
 222 esac
 223
 224 # Get the source directories to use for the host.  unix_dir is set
 225 # to unix to get some standard Unix routines.  posix_dir is set to get some
 226 # standard Posix routines.  sys_dir should supply system dependent routines
 227 # including crt0.
 228 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 229
 230 case "${host}" in
 231   *-*-cygwin*)
 232         sys_dir=cygwin
 233         posix_dir=posix
 234         ;;
 235   *-*-netware*)
 236         signal_dir=
 237         sys_dir=netware
 238         ;;
 239   *-*-rtems*)                   # generic RTEMS support
 240         sys_dir=rtems
 241         # RTEMS POSIX support is all inside RTEMS
 242         ;;
 243   a29k-*-*)
 244         sys_dir=a29khif
 245         signal_dir=
 246         ;;
 247   arc-*-*)
 248         sys_dir=arc
 249         ;;
 250   arm-*-*)
 251         sys_dir=arm
 252         ;;
 253   d10v*)
 254         sys_dir=d10v
 255         ;;
 256   d30v*)
 257         sys_dir=
 258         ;;
 259   h8300-*-hms*)
 260         sys_dir=h8300hms
 261         ;;
 262   h8300-*-elf*)
 263         sys_dir=h8300hms
 264         ;;
 265   h8300-*-xray*)
 266         sys_dir=h8300xray
 267         ;;
 268   h8500-*-hms*)
 269         sys_dir=h8500hms
 270         ;;
 271   h8500-*-elf*)
 272         sys_dir=h8500hms
 273         ;;
 274   i[3456]86-*-go32)
 275         sys_dir=go32
 276         ;;
 277   i[3456]86-*-sco*)
 278         sys_dir=sysvi386
 279         unix_dir=unix
 280         ;;
 281   i[3456]86-pc-linux-*)
 282         sys_dir=linux
 283         unix_dir=unix
 284         posix_dir=posix
 285         gcc_dir=`gcc -print-search-dirs | awk '/^install:/{print $2}'`
 286         #newlib_cflags="${newlib_cflags} -Werror" # DEBUGGING ONLY;BREAKS BUILD
 287         newlib_cflags="${newlib_cflags} -Wall"
 288         newlib_cflags="${newlib_cflags} -D_I386MACH_ALLOW_HW_INTERRUPTS"
 289         newlib_cflags="${newlib_cflags} -D_LOOSE_KERNEL_NAMES -DHAVE_FCNTL"
 290         # --- Required when building a shared library ------------------------
 291         newlib_cflags="${newlib_cflags} -fPIC -D_I386MACH_NEED_SOTYPE_FUNCTION"
 292         # --- The three lines below are optional ------------------------------
 293         ##newlib_cflags="${newlib_cflags} -nostdinc"
 294         ##newlib_cflags="${newlib_cflags} -I`newlib-flags --kernel-dir`/include"
 295         ##newlib_cflags="${newlib_cflags} -idirafter ${gcc_dir}include"
 296         ;;
 297   m68k-sun-sunos*)
 298         unix_dir=unix
 299         ;;
 300   m8*-bug-*)
 301         sys_dir=m88kbug
 302         ;;
 303   mips*-dec-*)
 304         sys_dir=decstation
 305         ;;
 306   mmix-knuth-mmixware)
 307         sys_dir=mmixware
 308         ;;
 309   powerpcle-*-pe)
 310         sys_dir=cygwin
 311         posix_dir=posix
 312         ;;
 313   sh*-*)
 314         sys_dir=sh
 315         ;;
 316   sparc-sun-sunos*)
 317         sys_dir=sun4
 318         unix_dir=unix
 319         ;;
 320   sparc64*)
 321         sys_dir=sparc64
 322         unix_dir=unix
 323         ;;
 324   strongarm-*-*)
 325         sys_dir=arm
 326         ;;
 327   xscale-*-*)
 328         sys_dir=arm
 329         ;;
 330   thumb-*-*)
 331         sys_dir=arm
 332         ;;
 333   tic80*)
 334         sys_dir=tic80
 335         ;;
 336   v70-nec-*)
 337         sys_dir=sysvnecv70
 338         ;;
 339   v810-*-*)
 340         sys_dir=sysnec810
 341         ;;
 342   v850-*-*)
 343         sys_dir=sysnecv850
 344         ;;
 345   v850e-*-*)
 346         sys_dir=sysnecv850
 347         ;;
 348   v850ea-*-*)
 349         sys_dir=sysnecv850
 350         ;;
 351   w65-*-*)
 352         sys_dir=w65
 353         ;;
 354   z8k-*-coff)
 355         sys_dir=z8ksim
 356         ;;
 357 esac
 358
 359 # Host specific flag settings -- usually for features that are not
 360 # general enough or broad enough to be handled above.
 361 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 362
 363 case "${host}" in
 364   *-*-cygwin*)
 365         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DSIGNAL_PROVIDED -DWANT_IO_LONG_DBL -DWANT_PRINTF_LONG_LONG -D_COMPILING_NEWLIB -DHAVE_FCNTL"
 366 # CYGWIN provides its own malloc if --enable-malloc-debugging is set
 367         if [ "x${malloc_debugging}" = "xyes" ] ; then
 368           newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"
 369         fi
 370         syscall_dir=syscalls
 371         ;;
 372 # RTEMS supplies its own versions of some routines:
 373 #       malloc()            (reentrant version)
 374 #       exit()              RTEMS has a "global" reent to flush
 375 #       signal()/raise()    RTEMS has its own including pthread signals
 376 #       _XYZ_r()            RTEMS has its own reentrant routines
 377 #
 378 #  NOTE: When newlib malloc uses a semaphore, RTEMS will switch to that.
 379   *-*-rtems*)
 380         newlib_cflags="${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"
 381         ;;
 382 # VxWorks supplies its own version of malloc, and the newlib one
 383 # doesn't work because VxWorks does not have sbrk.
 384   *-wrs-vxworks*)
 385         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DMISSING_SYSCALL_NAMES -DHAVE_FCNTL"
 386         ;;
 387 # UDI doesn't have exec, so system() should fail the right way
 388   a29k-amd-udi)
 389         newlib_cflags="${newlib_cflags} -DNO_EXEC"
 390         syscall_dir=syscalls
 391         ;;
 392   arc-*-*)
 393         syscall_dir=syscalls
 394         ;;
 395   arm-*-pe)
 396         syscall_dir=syscalls
 397         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 398 # Don't use the debugging protocols just yet.
 399         ;;
 400   arm-*-*)
 401         syscall_dir=syscalls
 402         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 403 # Select which debug protocol is being used.
 404 # ARM_RDP_MONITOR selects the Demon monitor.
 405 # ARM_RDI_MONITOR selects the Angel monitor.
 406 # If neither are defined, then hard coded defaults will be used
 407 # to create the program's environment.
 408 # See also thumb below.
 409 #       newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 410         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 411         ;;
 412   avr*)
 413         newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 414         ;;
 415   d10v*)
 416         newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
 417         syscall_dir=syscalls
 418         ;;
 419   d30v*)
 420         newlib_cflags="${newlib_cflags} -DABORT_MESSAGE -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 421         syscall_dir=
 422         ;;
 423   fr30-*-*)
 424         newlib_cflags="${newlib_cflags}"
 425         syscall_dir=syscalls
 426         ;;
 427   h8300*-*-*)
 428         syscall_dir=syscalls
 429         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 430         ;;
 431   h8500-*-*)
 432         syscall_dir=syscalls
 433         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 434         ;;
 435   i[3456]86-*-sco*)
 436         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_FCNTL"
 437         ;;
 438   i[3456]86-*-netware*)
 439         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DABORT_PROVIDED -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DHAVE_FCNTL"
 440         ;;
 441   i[3456]86-*-go32)
 442         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DHAVE_FCNTL"
 443         ;;
 444   m32r-*-*)
 445         # Pass -msdata=sdata so _impure_ptr goes in .sdata.
 446         # We don't generate sda relocs however for upward compatibility.
 447         # FIXME: This is necessary because the default multilib doesn't
 448         # use --print-multi-lib.
 449         newlib_cflags="${newlib_cflags} -msdata=sdata"
 450         syscall_dir=syscalls
 451         ;;
 452   mcore-*-*)
 453         newlib_cflags="${newlib_cflags}"
 454         syscall_dir=syscalls
 455         ;;
 456   mmix-*)
 457         syscall_dir=syscalls
 458         # We need every symbol 32-bit aligned, so the invalid
 459         # construct with attribute ((alias ("_ctype_b+127"))) breaks.
 460         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 461         ;;
 462   mn10?00-*-*)
 463         syscall_dir=syscalls
 464         ;;
 465   powerpc*-*-eabi* | \
 466   powerpc*-*-elf* | \
 467   powerpc*-*-linux* | \
 468   powerpc*-*-rtem* | \
 469   powerpc*-*-sysv* | \
 470   powerpc*-*-solaris*)
 471         newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"
 472         ;;
 473   powerpcle-*-pe)
 474         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL"
 475         syscall_dir=syscalls
 476         ;;
 477   sh*-*-*)
 478         newlib_cflags="${newlib_cflags} -DHAVE_GETTIMEOFDAY -DWANT_PRINTF_LONG_LONG"
 479         syscall_dir=syscalls
 480         ;;
 481   sparc-sun-sunos*)
 482         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"
 483         ;;
 484   sparc64-*-*)
 485         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_BLKSIZE -DHAVE_GETTIMEOFDAY -DHAVE_FCNTL"
 486         # This either belongs elsewhere or nowhere. But I need *something*,
 487         # so for now it's here ...
 488         case "${host_os}" in
 489           aoutv8 | *32p)
 490                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=32" ;;
 491           *)
 492                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=64" ;;
 493         esac
 494         ;;
 495   strongarm-*-*)
 496         syscall_dir=syscalls
 497         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 498         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 499         ;;
 500   xscale-*-*)
 501         syscall_dir=syscalls
 502         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 503         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 504         ;;
 505   thumb-*-pe)
 506         syscall_dir=syscalls
 507         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 508 # Don't use the debugging protocols just yet.
 509         ;;
 510   thumb-*-*)
 511         syscall_dir=syscalls
 512         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 513 # Select which debug protocol is being used.
 514 # ARM_RDP_MONITOR selects the Demon monitor.
 515 # ARM_RDI_MONITOR selects the Angel monitor.
 516 # If neither are defined, then hard coded defaults will be used
 517 # to create the program's environment.
 518 # See also arm and strongarm above.
 519 #       newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 520         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 521         ;;
 522   tic80*)
 523         syscall_dir=syscalls
 524         ;;
 525   v850-*-*)
 526         syscall_dir=syscalls
 527         ;;
 528   v850e-*-*)
 529         syscall_dir=syscalls
 530         ;;
 531   v850ea-*-*)
 532         syscall_dir=syscalls
 533         ;;
 534   w65-*-*)
 535         syscall_dir=syscalls
 536         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 537         ;;
 538   xstormy16-*-*)
 539         newlib_cflags="${newlib_cflags} -DHAVE_GETTIMEOFDAY"
 540         syscall_dir=syscalls
 541         ;;
 542   z8k-*-*)
 543         syscall_dir=syscalls
 544         ;;
 545   *)
 546         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 547         syscall_dir=
 548         ;;
 549 esac