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