gas/configure.in

   1 dnl Process this file with autoconf to produce a configure script.
   2 dnl
   3 dnl And be careful when changing it!  If you must add tests with square
   4 dnl brackets, be sure changequote invocations surround it.
   5 dnl
   6 dnl
   7 dnl v2.5 needed for --bindir et al
   8 AC_PREREQ(2.57)
   9 AC_INIT(as.h)
  10
  11 dnl Autoconf 2.57 will find the aux dir without this.  However, unless
  12 dnl we specify this explicitly, automake-1.7 will assume that ylwrap is in
  13 dnl gas/ instead of gas/../.
  14 AC_CONFIG_AUX_DIR(..)
  15 AC_CANONICAL_SYSTEM
  16 AC_ISC_POSIX
  17
  18 changequote(,)dnl
  19 BFD_VERSION=`sed -n -e 's/^.._INIT_AUTOMAKE.*,[         ]*\([^  ]*\)[   ]*).*/\1/p' < ${srcdir}/../bfd/configure.in`
  20 changequote([,])dnl
  21 AM_INIT_AUTOMAKE(gas, ${BFD_VERSION})
  22
  23 AM_PROG_LIBTOOL
  24
  25 AC_ARG_ENABLE(targets,
  26 [  --enable-targets        alternative target configurations besides the primary],
  27 [case "${enableval}" in
  28   yes | "") AC_ERROR(enable-targets option must specify target names or 'all')
  29             ;;
  30   no)       enable_targets= ;;
  31   *)        enable_targets=$enableval ;;
  32 esac])dnl
  33 AC_ARG_ENABLE(commonbfdlib,
  34 [  --enable-commonbfdlib   build shared BFD/opcodes/libiberty library],
  35 [case "${enableval}" in
  36   yes) commonbfdlib=true ;;
  37   no)  commonbfdlib=false ;;
  38   *)   AC_MSG_ERROR([bad value ${enableval} for BFD commonbfdlib option]) ;;
  39 esac])dnl
  40
  41 using_cgen=no
  42
  43 AM_BINUTILS_WARNINGS
  44
  45 # Generate a header file
  46 AM_CONFIG_HEADER(config.h:config.in)
  47
  48 # If we are on a DOS filesystem, we must use gdb.ini rather than
  49 # .gdbinit.
  50 case "${host}" in
  51   *-*-msdos* | *-*-go32* | *-*-mingw32* | *-*-windows*)
  52     GDBINIT="gdb.ini"
  53     AC_CONFIG_FILES(gdb.ini:gdbinit.in)
  54     ;;
  55   *)
  56     GDBINIT=".gdbinit"
  57     AC_CONFIG_FILES(.gdbinit:gdbinit.in)
  58     ;;
  59 esac
  60 AC_SUBST(GDBINIT)
  61
  62 #We need this for the host.  BOUT header is in host order.
  63 AC_C_BIGENDIAN
  64
  65 te_file=generic
  66
  67 # Makefile target for installing gas in $(tooldir)/bin.
  68 install_tooldir=install-exec-tooldir
  69
  70 canon_targets=""
  71 all_targets=no
  72 if test -n "$enable_targets" ; then
  73   for t in `echo $enable_targets | sed 's/,/ /g'`; do
  74     if test $t = "all"; then
  75       all_targets=yes
  76       continue
  77     fi
  78     result=`$ac_config_sub $t 2>/dev/null`
  79     if test -n "$result" ; then
  80       canon_targets="$canon_targets $result"
  81 #    else
  82 #      # Permit "all", etc.  We don't support it yet though.
  83 #      canon_targets="$canon_targets $t"
  84     fi
  85   done
  86   GAS_UNIQ(canon_targets)
  87 fi
  88
  89 emulations=""
  90
  91 for this_target in $target $canon_targets ; do
  92
  93     targ=${this_target}
  94     . ${srcdir}/configure.tgt
  95
  96     case ${target_cpu} in
  97       crisv32)
  98         AC_DEFINE_UNQUOTED(DEFAULT_CRIS_ARCH, $arch,
  99                            [Default CRIS architecture.])
 100         ;;
 101     esac
 102
 103     if test ${this_target} = $target ; then
 104       target_cpu_type=${cpu_type}
 105     elif test ${target_cpu_type} != ${cpu_type} ; then
 106       continue
 107     fi
 108
 109     generic_target=${cpu_type}-${target_vendor}-${target_os}
 110     case ${generic_target} in
 111       i386-*-sco3.2v5*)
 112         if test ${this_target} = $target; then
 113           AC_DEFINE(SCO_ELF, 1, [Define if defaulting to ELF on SCO 5.])
 114         fi
 115         ;;
 116
 117       i386-*-msdosdjgpp* \
 118       | i386-*-go32* \
 119       | i386-go32-rtems*)
 120         AC_DEFINE(STRICTCOFF, 1, [Using strict COFF?])
 121         ;;
 122
 123       i860-*-*)
 124         AC_MSG_WARN(GAS support for ${generic_target} is preliminary and a work in progress)
 125         ;;
 126
 127       mips-sony-bsd*)
 128         ;;
 129       mips-*-bsd*)
 130         AC_MSG_ERROR(Unknown vendor for mips-bsd configuration.)
 131         ;;
 132
 133       ppc-*-aix5.*)
 134         AC_DEFINE(AIX_WEAK_SUPPORT, 1,
 135                   [Define if using AIX 5.2 value for C_WEAKEXT.])
 136         ;;
 137       ppc-*-linux-*)
 138         case "$endian" in
 139           big)  ;;
 140           *)    AC_MSG_ERROR(GNU/Linux must be configured big endian) ;;
 141         esac
 142         ;;
 143       ppc-*-solaris*)
 144         if test ${this_target} = $target; then
 145           AC_DEFINE(TARGET_SOLARIS_COMMENT, 1,
 146                     [Define if default target is PowerPC Solaris.])
 147         fi
 148         if test x${endian} = xbig; then
 149           AC_MSG_ERROR(Solaris must be configured little endian)
 150         fi
 151         ;;
 152
 153       sh*-*-symbianelf*)
 154         AC_DEFINE(TARGET_SYMBIAN, 1, [Define if target is Symbian OS.])
 155         ;;
 156     esac
 157
 158     if test ${this_target} = $target ; then
 159       endian_def=
 160       if test x${endian} = xbig; then
 161         endian_def=1
 162       elif test x${endian} = xlittle; then
 163         endian_def=0
 164       fi
 165       if test x${endian_def} != x; then
 166         AC_DEFINE_UNQUOTED(TARGET_BYTES_BIG_ENDIAN, $endian_def,
 167                            [Define as 1 if big endian.])
 168       fi
 169     fi
 170
 171 # Other random stuff.
 172
 173     case ${cpu_type} in
 174       mips)
 175         # Set mips_cpu to the name of the default CPU.
 176         case ${target_cpu} in
 177           mips | mipsbe | mipseb | mipsle | mipsel | mips64 | mips64el)
 178             mips_cpu=from-abi
 179             ;;
 180           mipsisa32 | mipsisa32el)
 181             mips_cpu=mips32
 182             ;;
 183           mipsisa32r2 | mipsisa32r2el)
 184             mips_cpu=mips32r2
 185             ;;
 186           mipsisa64 | mipsisa64el)
 187             mips_cpu=mips64
 188             ;;
 189           mipsisa64r2 | mipsisa64r2el)
 190             mips_cpu=mips64r2
 191             ;;
 192           mipstx39 | mipstx39el)
 193             mips_cpu=r3900
 194             ;;
 195           mips64vr | mips64vrel)
 196             mips_cpu=vr4100
 197             ;;
 198           mipsisa32r2* | mipsisa64r2*)
 199 changequote(,)dnl
 200             mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..r2//' -e 's/el$//'`
 201 changequote([,])dnl
 202             ;;
 203           mips64* | mipsisa64* | mipsisa32*)
 204 changequote(,)dnl
 205             mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..//' -e 's/el$//'`
 206 changequote([,])dnl
 207             ;;
 208           *)
 209             AC_ERROR($target_cpu isn't a supported MIPS CPU name)
 210             ;;
 211         esac
 212         # See whether it's appropriate to set E_MIPS_ABI_O32 for o32
 213         # binaries.  It's a GNU extension that some OSes don't understand.
 214         # The value only matters on ELF targets.
 215         case ${target} in
 216           *-*-irix*)
 217             use_e_mips_abi_o32=0
 218             ;;
 219           *)
 220             use_e_mips_abi_o32=1
 221             ;;
 222         esac
 223         # Decide whether to generate 32-bit or 64-bit code by default.
 224         # Used to resolve -march=from-abi when an embedded ABI is selected.
 225         case ${target} in
 226           mips64*-*-* | mipsisa64*-*-*)
 227             mips_default_64bit=1
 228             ;;
 229           *)
 230             mips_default_64bit=0
 231             ;;
 232         esac
 233         # Decide which ABI to target by default.
 234         case ${target} in
 235           mips64*-linux* | mips-sgi-irix6*)
 236             mips_default_abi=N32_ABI
 237             ;;
 238           mips*-linux*)
 239             mips_default_abi=O32_ABI
 240             ;;
 241           mips64*-openbsd*)
 242             mips_default_abi=N64_ABI
 243             ;;
 244           *)
 245             mips_default_abi=NO_ABI
 246             ;;
 247         esac
 248         AC_DEFINE_UNQUOTED(MIPS_CPU_STRING_DEFAULT, "$mips_cpu",
 249                            [Default CPU for MIPS targets. ])
 250         AC_DEFINE_UNQUOTED(USE_E_MIPS_ABI_O32, $use_e_mips_abi_o32,
 251                            [Allow use of E_MIPS_ABI_O32 on MIPS targets. ])
 252         AC_DEFINE_UNQUOTED(MIPS_DEFAULT_64BIT, $mips_default_64bit,
 253                            [Generate 64-bit code by default on MIPS targets. ])
 254         AC_DEFINE_UNQUOTED(MIPS_DEFAULT_ABI, $mips_default_abi,
 255                            [Choose a default ABI for MIPS targets. ])
 256         ;;
 257     esac
 258
 259     # Do we need the opcodes library?
 260     case ${cpu_type} in
 261       vax | i386 | tic30)
 262         ;;
 263
 264       *)
 265         need_opcodes=yes
 266
 267         case "${enable_shared}" in
 268         yes) shared_opcodes=true ;;
 269         *opcodes*) shared_opcodes=true ;;
 270         *) shared_opcodes=false ;;
 271         esac
 272         ;;
 273     esac
 274
 275     # Any other special object files needed ?
 276     case ${cpu_type} in
 277
 278       bfin)
 279         echo ${extra_objects} | grep -s "bfin-parse.o"
 280         if test $? -ne 0 ; then
 281           extra_objects="$extra_objects bfin-parse.o"
 282         fi
 283
 284         echo ${extra_objects} | grep -s "bfin-lex.o"
 285         if test $? -ne 0 ; then
 286           extra_objects="$extra_objects bfin-lex.o"
 287         fi
 288         ;;
 289
 290       fr30 | ip2k | iq2000 | m32r | openrisc)
 291         using_cgen=yes
 292         ;;
 293
 294       m32c)
 295         using_cgen=yes
 296         ;;
 297       frv)
 298         using_cgen=yes
 299         ;;
 300       m68k)
 301         case ${extra_objects} in
 302         *m68k-parse.o*) ;;
 303         *) extra_objects="$extra_objects m68k-parse.o" ;;
 304         esac
 305         ;;
 306
 307       mips)
 308         echo ${extra_objects} | grep -s "itbl-parse.o"
 309         if test $? -ne 0 ; then
 310           extra_objects="$extra_objects itbl-parse.o"
 311         fi
 312
 313         echo ${extra_objects} | grep -s "itbl-lex.o"
 314         if test $? -ne 0 ; then
 315           extra_objects="$extra_objects itbl-lex.o"
 316         fi
 317
 318         echo ${extra_objects} | grep -s "itbl-ops.o"
 319         if test $? -ne 0 ; then
 320           extra_objects="$extra_objects itbl-ops.o"
 321         fi
 322         ;;
 323
 324       mt)
 325         using_cgen=yes
 326         ;;
 327
 328       i386 | s390 | sparc)
 329         if test $this_target = $target ; then
 330           AC_DEFINE_UNQUOTED(DEFAULT_ARCH, "${arch}", [Default architecture.])
 331         fi
 332         ;;
 333
 334       xstormy16)
 335         using_cgen=yes
 336         ;;
 337
 338       xc16x)
 339         using_cgen=yes
 340         ;;
 341
 342       xtensa)
 343         echo ${extra_objects} | grep -s "xtensa-relax.o"
 344         if test $? -ne 0 ; then
 345           extra_objects="$extra_objects xtensa-relax.o"
 346         fi
 347         ;;
 348
 349       *)
 350         ;;
 351     esac
 352
 353     if test $using_cgen = yes ; then
 354         case "x${extra_objects}" in
 355         *cgen.o*) ;;
 356         *) extra_objects="$extra_objects cgen.o" ;;
 357         esac
 358     fi
 359
 360 # See if we really can support this configuration with the emulation code.
 361
 362     if test $this_target = $target ; then
 363       obj_format=$fmt
 364       te_file=$em
 365     fi
 366
 367 # From target name and format, produce a list of supported emulations.
 368
 369     case ${generic_target}-${fmt} in
 370       mips-*-irix5*-*)  emulation="mipsbelf mipslelf mipself mipsbecoff mipslecoff mipsecoff" ;;
 371       mips*-*-linux*-*) case "$endian" in
 372                         big)    emulation="mipsbelf mipslelf mipself" ;;
 373                         *)      emulation="mipslelf mipsbelf mipself" ;;
 374                         esac ;;
 375       mips-*-lnews*-ecoff) ;;
 376       mips-*-*-ecoff)   case "$endian" in
 377                         big)    emulation="mipsbecoff mipslecoff mipsecoff" ;;
 378                         *)      emulation="mipslecoff mipsbecoff mipsecoff" ;;
 379                         esac ;;
 380       mips-*-*-elf)     case "$endian" in
 381                         big)    emulation="mipsbelf mipslelf mipself" ;;
 382                         *)      emulation="mipslelf mipsbelf mipself" ;;
 383                         esac ;;
 384       mips-*-sysv4*MP*-*) emulation="mipsbelf mipslelf mipself mipsbecoff mipslecoff mipsecoff" ;;
 385       # i386-pc-pe-coff != i386-pc-coff.
 386       i386-*-pe-coff)   ;;
 387       # Uncommenting the next line will turn on support for i386 AOUT
 388       # for the default linux configuration
 389       # i386-*-linux*-elf) emulation="i386elf i386aout" ;;
 390       #
 391       i386-*-aout)      emulation="i386aout" ;;
 392       i386-*-coff)      emulation="i386coff" ;;
 393       i386-*-elf)       emulation="i386elf" ;;
 394
 395       # Always all formats.  The first stated emulation becomes the default.
 396       cris-*-*aout*)    emulation="crisaout criself" ;;
 397       cris-*-*)         emulation="criself crisaout" ;;
 398     esac
 399
 400     emulations="$emulations $emulation"
 401
 402 done
 403
 404 # Turn on all targets if possible
 405 if test ${all_targets} = "yes"; then
 406   case ${target_cpu_type} in
 407   i386)
 408     case ${obj_format} in
 409     aout)
 410       emulations="$emulations i386coff i386elf"
 411       ;;
 412     coff)
 413       emulations="$emulations i386aout i386elf"
 414     ;;
 415     elf)
 416       emulations="$emulations i386aout i386coff"
 417       ;;
 418     esac
 419   ;;
 420   esac
 421 fi
 422
 423 # Assign floating point type.  Most processors with FP support
 424 # IEEE FP.  On those that don't support FP at all, usually IEEE
 425 # is emulated.
 426 case ${target_cpu} in
 427   vax | pdp11 ) atof=vax ;;
 428   *)            atof=ieee ;;
 429 esac
 430
 431 case "${obj_format}" in
 432   "") AC_MSG_ERROR(GAS does not know what format to use for target ${target}) ;;
 433 esac
 434
 435 # Unfortunately the cpu in cpu-opc.h file isn't always $(TARGET_CPU).
 436 cgen_cpu_prefix=""
 437 if test $using_cgen = yes ; then
 438   case ${target_cpu} in
 439     *) cgen_cpu_prefix=${target_cpu} ;;
 440   esac
 441   AC_SUBST(cgen_cpu_prefix)
 442   AC_DEFINE(USING_CGEN, 1, [Using cgen code?])
 443 fi
 444
 445 dnl
 446 dnl Make sure the desired support files exist.
 447 dnl
 448
 449 if test ! -r ${srcdir}/config/tc-${target_cpu_type}.c; then
 450   AC_MSG_ERROR(GAS does not support target CPU ${target_cpu_type})
 451 fi
 452
 453 if test ! -r ${srcdir}/config/obj-${obj_format}.c; then
 454   AC_MSG_ERROR(GAS does not have support for object file format ${obj_format})
 455 fi
 456
 457 # Some COFF configurations want these random other flags set.
 458 case ${obj_format} in
 459   coff)
 460     case ${target_cpu_type} in
 461       i386) AC_DEFINE(I386COFF, 1, [Using i386 COFF?]) ;;
 462       m68k) AC_DEFINE(M68KCOFF, 1, [Using m68k COFF?]) ;;
 463       m88k) AC_DEFINE(M88KCOFF, 1, [Using m88k COFF?]) ;;
 464     esac
 465     ;;
 466 esac
 467
 468 # Getting this done right is going to be a bitch.  Each configuration specified
 469 # with --enable-targets=... should be checked for environment, format, cpu
 470 # setting.
 471 #
 472 # For each configuration, the necessary object file support code must be linked
 473 # in.  This might be only one, it might be up to four.  The necessary emulation
 474 # code needs to be provided, too.
 475 #
 476 # And then there's "--enable-targets=all"....
 477 #
 478 # For now, just always do it for MIPS ELF or ECOFF configurations.  Sigh.
 479
 480 formats="${obj_format}"
 481 emfiles=""
 482 EMULATIONS=""
 483 GAS_UNIQ(emulations)
 484 for em in . $emulations ; do
 485   case $em in
 486     .)  continue ;;
 487     mipsbelf | mipslelf | mipself)
 488         fmt=elf   file=mipself ;;
 489     mipsbecoff | mipslecoff | mipsecoff)
 490         fmt=ecoff file=mipsecoff ;;
 491     *coff)
 492         fmt=coff  file=$em ;;
 493     *aout)
 494         fmt=aout file=$em ;;
 495     *elf)
 496         fmt=elf file=$em ;;
 497   esac
 498   formats="$formats $fmt"
 499   emfiles="$emfiles e-$file.o"
 500   EMULATIONS="$EMULATIONS &$em,"
 501 done
 502 GAS_UNIQ(formats)
 503 GAS_UNIQ(emfiles)
 504 if test `set . $formats ; shift ; echo $#` -gt 1 ; then
 505   for fmt in $formats ; do
 506     case $fmt in
 507       aout)     AC_DEFINE(OBJ_MAYBE_AOUT, 1,    [a.out support?])   ;;
 508       bout)     AC_DEFINE(OBJ_MAYBE_BOUT, 1,    [b.out support?])   ;;
 509       coff)     AC_DEFINE(OBJ_MAYBE_COFF, 1,    [COFF support?])    ;;
 510       ecoff)    AC_DEFINE(OBJ_MAYBE_ECOFF, 1,   [ECOFF support?])   ;;
 511       elf)      AC_DEFINE(OBJ_MAYBE_ELF, 1,     [ELF support?])     ;;
 512       generic)  AC_DEFINE(OBJ_MAYBE_GENERIC, 1, [generic support?]) ;;
 513       som)      AC_DEFINE(OBJ_MAYBE_SOM, 1,     [SOM support?])     ;;
 514     esac
 515     extra_objects="$extra_objects obj-$fmt.o"
 516   done
 517   obj_format=multi
 518 fi
 519 if test `set . $emfiles ; shift ; echo $#` -gt 0 ; then
 520   DEFAULT_EMULATION=`set . $emulations ; echo $2`
 521   # e-mips* has more than one emulation per file, e-i386* has just one at the
 522   # moment.  If only one emulation is specified, then don't define
 523   # USE_EMULATIONS or include any of the e-files as they will only be bloat.
 524   case "${obj_format}${emfiles}" in
 525     multi* | *mips*)
 526       extra_objects="$extra_objects $emfiles"
 527       AC_DEFINE(USE_EMULATIONS, 1, [Use emulation support?]) ;;
 528   esac
 529 fi
 530 AC_SUBST(extra_objects)
 531 AC_DEFINE_UNQUOTED(EMULATIONS, $EMULATIONS, [Supported emulations.])
 532 AC_DEFINE_UNQUOTED(DEFAULT_EMULATION, "$DEFAULT_EMULATION",
 533                    [Default emulation.])
 534
 535 reject_dev_configs=yes
 536
 537 case ${reject_dev_configs}-${dev} in
 538   yes-yes) # Oops.
 539     AC_MSG_ERROR(GAS does not support the ${generic_target} configuration.)
 540     ;;
 541 esac
 542
 543 AC_SUBST(target_cpu_type)
 544 AC_SUBST(obj_format)
 545 AC_SUBST(te_file)
 546 AC_SUBST(install_tooldir)
 547 AC_SUBST(atof)
 548 dnl AC_SUBST(emulation)
 549
 550 # do we need the opcodes library?
 551 case "${need_opcodes}" in
 552 yes)
 553   OPCODES_LIB=../opcodes/libopcodes.la
 554   ;;
 555 esac
 556
 557 AC_SUBST(OPCODES_LIB)
 558
 559 AC_DEFINE_UNQUOTED(TARGET_ALIAS,        "${target_alias}", [Target alias.])
 560 AC_DEFINE_UNQUOTED(TARGET_CANONICAL,    "${target}",       [Canonical target.])
 561 AC_DEFINE_UNQUOTED(TARGET_CPU,          "${target_cpu}",   [Target CPU.])
 562 AC_DEFINE_UNQUOTED(TARGET_VENDOR,       "${target_vendor}", [Target vendor.])
 563 AC_DEFINE_UNQUOTED(TARGET_OS,           "${target_os}",    [Target OS.])
 564
 565 AC_PROG_CC
 566
 567 AC_PROG_YACC
 568 AM_PROG_LEX
 569
 570 ALL_LINGUAS="fr tr es rw"
 571 ZW_GNU_GETTEXT_SISTER_DIR
 572 AM_PO_SUBDIRS
 573
 574 AM_MAINTAINER_MODE
 575 AC_EXEEXT
 576
 577 AC_CHECK_HEADERS(string.h stdlib.h memory.h strings.h unistd.h stdarg.h varargs.h errno.h sys/types.h)
 578
 579 # Put this here so that autoconf's "cross-compiling" message doesn't confuse
 580 # people who are not cross-compiling but are compiling cross-assemblers.
 581 AC_MSG_CHECKING(whether compiling a cross-assembler)
 582 if test "${host}" = "${target}"; then
 583   cross_gas=no
 584 else
 585   cross_gas=yes
 586   AC_DEFINE(CROSS_COMPILE, 1, [Compiling cross-assembler?])
 587 fi
 588 AC_MSG_RESULT($cross_gas)
 589
 590 dnl ansidecl.h will deal with const
 591 dnl AC_CONST
 592 AC_FUNC_ALLOCA
 593 AC_C_INLINE
 594
 595 # VMS doesn't have unlink.
 596 AC_CHECK_FUNCS(unlink remove, break)
 597
 598 # Some systems don't have sbrk().
 599 AC_CHECK_FUNCS(sbrk)
 600
 601 # do we need the math library?
 602 case "${need_libm}" in
 603 yes)
 604   AC_CHECK_LIBM
 605   AC_SUBST(LIBM)
 606   ;;
 607 esac
 608
 609 # Some non-ANSI preprocessors botch requoting inside strings.  That's bad
 610 # enough, but on some of those systems, the assert macro relies on requoting
 611 # working properly!
 612 GAS_WORKING_ASSERT
 613
 614 # On some systems, the system header files may not declare malloc, realloc,
 615 # and free.  There are places where gas needs these functions to have been
 616 # declared -- such as when taking their addresses.
 617 gas_test_headers="
 618 #ifdef HAVE_MEMORY_H
 619 #include <memory.h>
 620 #endif
 621 #ifdef HAVE_STRING_H
 622 #include <string.h>
 623 #else
 624 #ifdef HAVE_STRINGS_H
 625 #include <strings.h>
 626 #endif
 627 #endif
 628 #ifdef HAVE_STDLIB_H
 629 #include <stdlib.h>
 630 #endif
 631 #ifdef HAVE_UNISTD_H
 632 #include <unistd.h>
 633 #endif
 634 "
 635
 636 # Does errno.h declare errno, or do we have to add a separate declaration
 637 # for it?
 638 GAS_CHECK_DECL_NEEDED(errno, f, int f, [
 639 #ifdef HAVE_ERRNO_H
 640 #include <errno.h>
 641 #endif
 642 ])
 643
 644 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
 645 AC_CACHE_VAL(gas_cv_decl_getopt_unistd_h,
 646 [AC_TRY_COMPILE([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);],
 647 gas_cv_decl_getopt_unistd_h=yes, gas_cv_decl_getopt_unistd_h=no)])
 648 AC_MSG_RESULT($gas_cv_decl_getopt_unistd_h)
 649 if test $gas_cv_decl_getopt_unistd_h = yes; then
 650   AC_DEFINE([HAVE_DECL_GETOPT], 1,
 651             [Is the prototype for getopt in <unistd.h> in the expected format?])
 652 fi
 653
 654 GAS_CHECK_DECL_NEEDED(environ, f, char **f, $gas_test_headers)
 655 GAS_CHECK_DECL_NEEDED(ffs, f, int (*f)(int), $gas_test_headers)
 656 GAS_CHECK_DECL_NEEDED(free, f, void (*f)(), $gas_test_headers)
 657 GAS_CHECK_DECL_NEEDED(malloc, f, char *(*f)(), $gas_test_headers)
 658 GAS_CHECK_DECL_NEEDED(sbrk, f, char *(*f)(), $gas_test_headers)
 659 GAS_CHECK_DECL_NEEDED(strstr, f, char *(*f)(), $gas_test_headers)
 660
 661 AC_CHECK_DECLS([vsnprintf])
 662
 663 BFD_BINARY_FOPEN
 664
 665 dnl Required for html and install-html targets.
 666 AC_SUBST(datarootdir)
 667 AC_SUBST(docdir)
 668 AC_SUBST(htmldir)
 669
 670 dnl This must come last.
 671
 672 dnl We used to make symlinks to files in the source directory, but now
 673 dnl we just use the right name for .c files, and create .h files in
 674 dnl the build directory which include the right .h file.  Make sure
 675 dnl the old symlinks don't exist, so that a reconfigure in an existing
 676 dnl directory behaves reasonably.
 677
 678 AC_CONFIG_FILES(Makefile doc/Makefile po/Makefile.in:po/Make-in)
 679 AC_CONFIG_COMMANDS([default],
 680 [rm -f targ-cpu.c targ-cpu.h obj-format.h obj-format.c targ-env.h atof-targ.c itbl-cpu.h
 681  echo '#include "tc-'"${target_cpu_type}"'.h"' > targ-cpu.h
 682  echo '#include "obj-'"${obj_format}"'.h"' > obj-format.h
 683  echo '#include "te-'"${te_file}"'.h"' > targ-env.h
 684  echo '#include "itbl-'"${target_cpu_type}"'.h"' > itbl-cpu.h
 685  if test "x$cgen_cpu_prefix" != x ; then
 686    echo '#include "opcodes/'"${cgen_cpu_prefix}"'-desc.h"' > cgen-desc.h
 687  fi],
 688 [target_cpu_type=${target_cpu_type}
 689  cgen_cpu_prefix=${cgen_cpu_prefix}
 690  obj_format=${obj_format}
 691  te_file=${te_file}])
 692
 693 AC_OUTPUT