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 #   have_sys_mach_dir   Is there a machine subdirectory in sys subdirectory
  31 #   posix_dir           "posix" to build libc/posix, "" otherwise
  32 #   signal_dir          "signal" to build libc/signal, "" otherwise
  33 #   syscall_dir         "syscalls" to build libc/syscalls, "" otherwise
  34 #   unix_dir            "unix" to build libc/unix, "" otherwise
  35 #   use_libtool         flag: use libtool to build newlib?
  36 #   aext                library extension - needed for libtool support
  37 #   oext                object file extension - needed for libtool support
  38 #   crt1                name of crt1 object if one is provided
  39 #   crt1_dir            directory where crt1 object is found
  40
  41 newlib_cflags=
  42 libm_machine_dir=
  43 machine_dir=
  44 sys_dir=
  45 posix_dir=
  46 signal_dir=signal
  47 syscall_dir=
  48 unix_dir=
  49 mach_add_setjmp=
  50 crt1=
  51 crt1_dir=
  52 use_libtool=no
  53 have_sys_mach_dir=no
  54 aext=a
  55 oext=o
  56
  57 case "${target_optspace}:${host}" in
  58   yes:*)
  59     newlib_cflags="${newlib_cflags} -Os"
  60     ;;
  61   :m32r-* | :d10v-* | :d30v-* | :avr-*)
  62     newlib_cflags="${newlib_cflags} -Os"
  63     ;;
  64   no:* | :*)
  65     newlib_cflags="${newlib_cflags} -O2"
  66     ;;
  67 esac
  68
  69 # Get the source directories to use for the CPU type.
  70 # machine_dir should supply CPU dependent routines, such as setjmp.
  71 # newlib_cflags is passed to gcc when compiling.
  72 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
  73
  74 case "${host_cpu}" in
  75   a29k)
  76         machine_dir=a29k
  77         ;;
  78   arc)
  79         machine_dir=
  80         ;;
  81   arm)
  82         machine_dir=arm
  83         ;;
  84   avr*)
  85         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mcall-prologues"
  86         ;;
  87
  88   d10v*)
  89         machine_dir=d10v
  90         ;;
  91   d30v*)
  92         machine_dir=d30v
  93         ;;
  94   fr30)
  95         machine_dir=fr30
  96         ;;
  97   h8300)
  98         machine_dir=h8300
  99         ;;
 100   h8500)
 101         machine_dir=h8500
 102         ;;
 103   hppa*)
 104         machine_dir=hppa
 105         ;;
 106   i960)
 107         machine_dir=i960
 108         ;;
 109   i[3456]86)
 110         # Don't use for these since they provide their own setjmp.
 111         case ${host} in
 112         *-*-go32 | *-*-sco* | *-*-cygwin*)
 113                 libm_machine_dir=i386
 114                 machine_dir=i386
 115                 ;;
 116         *)
 117                 libm_machine_dir=i386
 118                 machine_dir=i386
 119                 mach_add_setjmp=true
 120                 ;;
 121         esac
 122         ;;
 123   ia64*)
 124         ;;
 125   m32r*)
 126         machine_dir=m32r
 127         ;;
 128   m68*)
 129         machine_dir=m68k
 130         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 131         ;;
 132   m88k)
 133         machine_dir=m88k
 134         newlib_cflags="${newlib_cflags} -m88000"
 135         ;;
 136   m88110)
 137         machine_dir=m88k
 138         newlib_cflags="${newlib_cflags} -m88110"
 139         ;;
 140   mcore)
 141         ;;
 142   mips*)
 143         machine_dir=mips
 144         ;;
 145   mmix)
 146         ;;
 147   mn10200)
 148         machine_dir=mn10200
 149         ;;
 150   mn10300)
 151         machine_dir=mn10300
 152         ;;
 153   or16)
 154         ;;
 155   or32)
 156         ;;
 157   powerpc*)
 158         machine_dir=powerpc
 159         ;;
 160   sh | sh64)
 161         machine_dir=sh
 162         ;;
 163   sparc*)
 164         machine_dir=sparc
 165         # FIXME: Might wish to make MALLOC_ALIGNMENT more generic.
 166         newlib_cflags="${newlib_cflags} -DMALLOC_ALIGNMENT=8"
 167         ;;
 168   strongarm)
 169         machine_dir=arm
 170         ;;
 171   xscale)
 172         machine_dir=xscale
 173         ;;
 174   thumb)
 175         machine_dir=arm
 176         ;;
 177   tic80*)
 178         machine_dir=tic80
 179         ;;
 180   v70)
 181         ;;
 182   v810)
 183         ;;
 184   v850)
 185         machine_dir=v850
 186         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 187         ;;
 188   v850e)
 189         machine_dir=v850
 190         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 191         ;;
 192   v850ea)
 193         machine_dir=v850
 194         newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED -mv850 "
 195         ;;
 196   w65*)
 197         machine_dir=w65
 198         ;;
 199   xstormy16)
 200         machine_dir=xstormy16
 201         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"
 202         ;;
 203   z8k)
 204         machine_dir=z8k
 205         ;;
 206   *)
 207         echo '***' "Newlib does not support CPU ${host_cpu}" 1>&2
 208         exit 1
 209         ;;
 210 esac
 211
 212 # Enable multibyte support if requested.
 213
 214 if [ "${newlib_mb}" = "yes" ] ; then
 215         newlib_cflags="${newlib_cflags} -DMB_CAPABLE"
 216 fi
 217
 218 # Disable printf/scanf floating-point support if requested.
 219
 220 if [ "${newlib_io_float}" = "no" ] ; then
 221         newlib_cflags="${newlib_cflags} -DNO_FLOATING_POINT"
 222 fi
 223
 224 # Verify if shared newlib support is allowed and set appropriate variables
 225 # We don't want to use libtool for platforms that we are not going to
 226 # support shared libraries.  This is because it adds executable tests which
 227 # we don't want for most embedded platforms.
 228 case "${host}" in
 229   i[3456]86-pc-linux-*)
 230     use_libtool=yes
 231     have_sys_mach_dir=yes
 232     oext=lo
 233     aext=la ;;
 234   *) ;; #shared library not supported for ${host}
 235 esac
 236
 237 # Get the source directories to use for the host.  unix_dir is set
 238 # to unix to get some standard Unix routines.  posix_dir is set to get some
 239 # standard Posix routines.  sys_dir should supply system dependent routines
 240 # including crt0.
 241 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 242
 243 case "${host}" in
 244   *-*-cygwin*)
 245         sys_dir=cygwin
 246         posix_dir=posix
 247         ;;
 248   *-*-netware*)
 249         signal_dir=
 250         sys_dir=netware
 251         ;;
 252   *-*-rtems*)                   # generic RTEMS support
 253         sys_dir=rtems
 254         # RTEMS POSIX support is all inside RTEMS
 255         ;;
 256   a29k-*-*)
 257         sys_dir=a29khif
 258         signal_dir=
 259         ;;
 260   arc-*-*)
 261         sys_dir=arc
 262         ;;
 263   arm-*-*)
 264         sys_dir=arm
 265         ;;
 266   d10v*)
 267         sys_dir=d10v
 268         ;;
 269   d30v*)
 270         sys_dir=
 271         ;;
 272   h8300-*-hms*)
 273         sys_dir=h8300hms
 274         ;;
 275   h8300-*-elf*)
 276         sys_dir=h8300hms
 277         ;;
 278   h8300-*-xray*)
 279         sys_dir=h8300xray
 280         ;;
 281   h8500-*-hms*)
 282         sys_dir=h8500hms
 283         ;;
 284   h8500-*-elf*)
 285         sys_dir=h8500hms
 286         ;;
 287   i[3456]86-*-go32)
 288         sys_dir=go32
 289         ;;
 290   i[3456]86-*-sco*)
 291         sys_dir=sysvi386
 292         unix_dir=unix
 293         ;;
 294   i[3456]86-pc-linux-*)
 295         sys_dir=linux
 296         unix_dir=unix
 297         posix_dir=posix
 298         crt1=crt1.o
 299         crt1_dir=libc/sys/${sys_dir}
 300         gcc_dir=`gcc -print-search-dirs | awk '/^install:/{print $2}'`
 301         #newlib_cflags="${newlib_cflags} -Werror" # DEBUGGING ONLY;BREAKS BUILD
 302         newlib_cflags="${newlib_cflags} -Wall"
 303         newlib_cflags="${newlib_cflags} -D_I386MACH_ALLOW_HW_INTERRUPTS"
 304         newlib_cflags="${newlib_cflags} -D_LOOSE_KERNEL_NAMES -DHAVE_FCNTL"
 305         # --- Required when building a shared library ------------------------
 306         newlib_cflags="${newlib_cflags} -fPIC -D_I386MACH_NEED_SOTYPE_FUNCTION"
 307         # --- The three lines below are optional ------------------------------
 308         ##newlib_cflags="${newlib_cflags} -nostdinc"
 309         ##newlib_cflags="${newlib_cflags} -I`newlib-flags --kernel-dir`/include"
 310         ##newlib_cflags="${newlib_cflags} -idirafter ${gcc_dir}include"
 311         ;;
 312   m68k-sun-sunos*)
 313         unix_dir=unix
 314         ;;
 315   m8*-bug-*)
 316         sys_dir=m88kbug
 317         ;;
 318   mips*-dec-*)
 319         sys_dir=decstation
 320         ;;
 321   mmix-knuth-mmixware)
 322         sys_dir=mmixware
 323         ;;
 324   powerpcle-*-pe)
 325         sys_dir=cygwin
 326         posix_dir=posix
 327         ;;
 328   sh*-*)
 329         sys_dir=sh
 330         ;;
 331   sparc-sun-sunos*)
 332         sys_dir=sun4
 333         unix_dir=unix
 334         ;;
 335   sparc64*)
 336         sys_dir=sparc64
 337         unix_dir=unix
 338         ;;
 339   strongarm-*-*)
 340         sys_dir=arm
 341         ;;
 342   xscale-*-*)
 343         sys_dir=arm
 344         ;;
 345   thumb-*-*)
 346         sys_dir=arm
 347         ;;
 348   tic80*)
 349         sys_dir=tic80
 350         ;;
 351   v70-nec-*)
 352         sys_dir=sysvnecv70
 353         ;;
 354   v810-*-*)
 355         sys_dir=sysnec810
 356         ;;
 357   v850-*-*)
 358         sys_dir=sysnecv850
 359         ;;
 360   v850e-*-*)
 361         sys_dir=sysnecv850
 362         ;;
 363   v850ea-*-*)
 364         sys_dir=sysnecv850
 365         ;;
 366   w65-*-*)
 367         sys_dir=w65
 368         ;;
 369   z8k-*-coff)
 370         sys_dir=z8ksim
 371         ;;
 372 esac
 373
 374 # Host specific flag settings -- usually for features that are not
 375 # general enough or broad enough to be handled above.
 376 # THIS TABLE IS ALPHA SORTED.  KEEP IT THAT WAY.
 377
 378 case "${host}" in
 379   *-*-cygwin*)
 380         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DSIGNAL_PROVIDED -DWANT_IO_LONG_DBL -DWANT_PRINTF_LONG_LONG -D_COMPILING_NEWLIB -DHAVE_FCNTL"
 381 # CYGWIN provides its own malloc if --enable-malloc-debugging is set
 382         if [ "x${malloc_debugging}" = "xyes" ] ; then
 383           newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED"
 384         fi
 385         syscall_dir=syscalls
 386         ;;
 387 # RTEMS supplies its own versions of some routines:
 388 #       malloc()            (reentrant version)
 389 #       exit()              RTEMS has a "global" reent to flush
 390 #       signal()/raise()    RTEMS has its own including pthread signals
 391 #       _XYZ_r()            RTEMS has its own reentrant routines
 392 #
 393 #  NOTE: When newlib malloc uses a semaphore, RTEMS will switch to that.
 394   *-*-rtems*)
 395         newlib_cflags="${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"
 396         ;;
 397 # VxWorks supplies its own version of malloc, and the newlib one
 398 # doesn't work because VxWorks does not have sbrk.
 399   *-wrs-vxworks*)
 400         newlib_cflags="${newlib_cflags} -DMALLOC_PROVIDED -DMISSING_SYSCALL_NAMES -DHAVE_FCNTL"
 401         ;;
 402 # UDI doesn't have exec, so system() should fail the right way
 403   a29k-amd-udi)
 404         newlib_cflags="${newlib_cflags} -DNO_EXEC"
 405         syscall_dir=syscalls
 406         ;;
 407   arc-*-*)
 408         syscall_dir=syscalls
 409         ;;
 410   arm-*-pe)
 411         syscall_dir=syscalls
 412         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 413 # Don't use the debugging protocols just yet.
 414         ;;
 415   arm-*-*)
 416         syscall_dir=syscalls
 417         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 418 # Select which debug protocol is being used.
 419 # ARM_RDP_MONITOR selects the Demon monitor.
 420 # ARM_RDI_MONITOR selects the Angel monitor.
 421 # If neither are defined, then hard coded defaults will be used
 422 # to create the program's environment.
 423 # See also thumb below.
 424 #       newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 425         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 426         ;;
 427   avr*)
 428         newlib_cflags="${newlib_cflags} -DNO_EXEC -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 429         ;;
 430   d10v*)
 431         newlib_cflags="${newlib_cflags} -DSMALL_MEMORY"
 432         syscall_dir=syscalls
 433         ;;
 434   d30v*)
 435         newlib_cflags="${newlib_cflags} -DABORT_MESSAGE -DSMALL_MEMORY -DMISSING_SYSCALL_NAMES"
 436         syscall_dir=
 437         ;;
 438   fr30-*-*)
 439         newlib_cflags="${newlib_cflags}"
 440         syscall_dir=syscalls
 441         ;;
 442   h8300*-*-*)
 443         syscall_dir=syscalls
 444         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 445         ;;
 446   h8500-*-*)
 447         syscall_dir=syscalls
 448         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 449         ;;
 450   i[3456]86-*-sco*)
 451         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED -DHAVE_FCNTL"
 452         ;;
 453   i[3456]86-*-netware*)
 454         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DABORT_PROVIDED -DCLOCK_PROVIDED -DMALLOC_PROVIDED -DHAVE_FCNTL"
 455         ;;
 456   i[3456]86-*-go32)
 457         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES -DNO_EXEC -DHAVE_FCNTL"
 458         ;;
 459   m32r-*-*)
 460         # Pass -msdata=sdata so _impure_ptr goes in .sdata.
 461         # We don't generate sda relocs however for upward compatibility.
 462         # FIXME: This is necessary because the default multilib doesn't
 463         # use --print-multi-lib.
 464         newlib_cflags="${newlib_cflags} -msdata=sdata"
 465         syscall_dir=syscalls
 466         ;;
 467   mcore-*-*)
 468         newlib_cflags="${newlib_cflags}"
 469         syscall_dir=syscalls
 470         ;;
 471   mmix-*)
 472         syscall_dir=syscalls
 473         # We need every symbol 32-bit aligned, so the invalid
 474         # construct with attribute ((alias ("_ctype_b+127"))) breaks.
 475         newlib_cflags="${newlib_cflags} -DCOMPACT_CTYPE"
 476         ;;
 477   mn10?00-*-*)
 478         syscall_dir=syscalls
 479         ;;
 480   powerpc*-*-eabi* | \
 481   powerpc*-*-elf* | \
 482   powerpc*-*-linux* | \
 483   powerpc*-*-rtem* | \
 484   powerpc*-*-sysv* | \
 485   powerpc*-*-solaris*)
 486         newlib_cflags="${newlib_cflags} -mrelocatable-lib -mno-eabi -mstrict-align -DMISSING_SYSCALL_NAMES"
 487         ;;
 488   powerpcle-*-pe)
 489         newlib_cflags="${newlib_cflags} -DHAVE_OPENDIR -DHAVE_RENAME -DHAVE_FCNTL"
 490         syscall_dir=syscalls
 491         ;;
 492   sh*-*-*)
 493         newlib_cflags="${newlib_cflags} -DHAVE_GETTIMEOFDAY -DWANT_PRINTF_LONG_LONG"
 494         syscall_dir=syscalls
 495         ;;
 496   sparc-sun-sunos*)
 497         newlib_cflags="${newlib_cflags} -DSIGNAL_PROVIDED"
 498         ;;
 499   sparc64-*-*)
 500         newlib_cflags="${newlib_cflags} -DREENTRANT_SYSCALLS_PROVIDED -DHAVE_BLKSIZE -DHAVE_GETTIMEOFDAY -DHAVE_FCNTL"
 501         # This either belongs elsewhere or nowhere. But I need *something*,
 502         # so for now it's here ...
 503         case "${host_os}" in
 504           aoutv8 | *32p)
 505                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=32" ;;
 506           *)
 507                 newlib_cflags="${newlib_cflags} -DTARGET_PTR_SIZE=64" ;;
 508         esac
 509         ;;
 510   strongarm-*-*)
 511         syscall_dir=syscalls
 512         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 513         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 514         ;;
 515   xscale-*-*)
 516         syscall_dir=syscalls
 517         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 518         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 519         ;;
 520   thumb-*-pe)
 521         syscall_dir=syscalls
 522         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 523 # Don't use the debugging protocols just yet.
 524         ;;
 525   thumb-*-*)
 526         syscall_dir=syscalls
 527         newlib_cflags="${newlib_cflags} -DABORT_PROVIDED -DHAVE_GETTIMEOFDAY"
 528 # Select which debug protocol is being used.
 529 # ARM_RDP_MONITOR selects the Demon monitor.
 530 # ARM_RDI_MONITOR selects the Angel monitor.
 531 # If neither are defined, then hard coded defaults will be used
 532 # to create the program's environment.
 533 # See also arm and strongarm above.
 534 #       newlib_cflags="${newlib_cflags} -DARM_RDP_MONITOR"
 535         newlib_cflags="${newlib_cflags} -DARM_RDI_MONITOR"
 536         ;;
 537   tic80*)
 538         syscall_dir=syscalls
 539         ;;
 540   v850-*-*)
 541         syscall_dir=syscalls
 542         ;;
 543   v850e-*-*)
 544         syscall_dir=syscalls
 545         ;;
 546   v850ea-*-*)
 547         syscall_dir=syscalls
 548         ;;
 549   w65-*-*)
 550         syscall_dir=syscalls
 551         newlib_cflags="${newlib_cflags} -DSMALL_DTOA -DSMALL_MEMORY"
 552         ;;
 553   xstormy16-*-*)
 554         newlib_cflags="${newlib_cflags} -DHAVE_GETTIMEOFDAY"
 555         syscall_dir=syscalls
 556         ;;
 557   z8k-*-*)
 558         syscall_dir=syscalls
 559         ;;
 560   *)
 561         newlib_cflags="${newlib_cflags} -DMISSING_SYSCALL_NAMES"
 562         syscall_dir=
 563         ;;
 564 esac