gas/configure.ac

   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   Copyright (C) 2012-2015 Free Software Foundation, Inc.
   7 dnl
   8 dnl This file is free software; you can redistribute it and/or modify
   9 dnl it under the terms of the GNU General Public License as published by
  10 dnl the Free Software Foundation; either version 3 of the License, or
  11 dnl (at your option) any later version.
  12 dnl
  13 dnl This program is distributed in the hope that it will be useful,
  14 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 dnl GNU General Public License for more details.
  17 dnl
  18 dnl You should have received a copy of the GNU General Public License
  19 dnl along with this program; see the file COPYING3.  If not see
  20 dnl <http://www.gnu.org/licenses/>.
  21 dnl
  22 dnl v2.5 needed for --bindir et al
  23 AC_PREREQ(2.59)
  24 m4_include([../bfd/version.m4])
  25 AC_INIT([gas], BFD_VERSION)
  26 AC_CONFIG_SRCDIR(as.h)
  27
  28 dnl Autoconf 2.57 will find the aux dir without this.  However, unless
  29 dnl we specify this explicitly, automake-1.7 will assume that ylwrap is in
  30 dnl gas/ instead of gas/../.
  31 AC_CONFIG_AUX_DIR(..)
  32 AC_CANONICAL_TARGET
  33 AC_ISC_POSIX
  34
  35 AM_INIT_AUTOMAKE
  36
  37 AC_PROG_CC
  38 AC_GNU_SOURCE
  39 AC_USE_SYSTEM_EXTENSIONS
  40
  41 LT_INIT
  42 ACX_LARGEFILE
  43
  44 AC_ARG_ENABLE(targets,
  45 [  --enable-targets        alternative target configurations besides the primary],
  46 [case "${enableval}" in
  47   yes | "") AC_MSG_ERROR(enable-targets option must specify target names or 'all')
  48             ;;
  49   no)       enable_targets= ;;
  50   *)        enable_targets=$enableval ;;
  51 esac])dnl
  52
  53 ac_checking=yes
  54 if grep '^RELEASE=y' ${srcdir}/../bfd/Makefile.am >/dev/null 2>/dev/null ; then
  55   ac_checking=
  56 fi
  57 AC_ARG_ENABLE(checking,
  58 [  --enable-checking       enable run-time checks],
  59 [case "${enableval}" in
  60   no|none)  ac_checking= ;;
  61   *)        ac_checking=yes ;;
  62 esac])dnl
  63 if test x$ac_checking != x ; then
  64   AC_DEFINE(ENABLE_CHECKING, 1, [Define if you want run-time sanity checks.])
  65 fi
  66
  67 # PR gas/19109
  68 # Decide the default method for compressing debug sections.
  69 ac_default_compressed_debug_sections=unset
  70 # Provide a configure time option to override our default.
  71 AC_ARG_ENABLE(compressed_debug_sections,
  72               AS_HELP_STRING([--enable-compressed-debug-sections={all,gas,none}],
  73               [compress debug sections by default])],
  74 [case ,"${enableval}", in
  75   ,yes, | ,all, | *,gas,*) ac_default_compressed_debug_sections=yes ;;
  76   ,no, | ,none,)  ac_default_compressed_debug_sections=no ;;
  77   *)   ac_default_compressed_debug_sections=unset ;;
  78 esac])dnl
  79
  80 using_cgen=no
  81
  82 AM_BINUTILS_WARNINGS
  83
  84 # Generate a header file
  85 AC_CONFIG_HEADERS(config.h:config.in)
  86
  87 # PR 14072
  88 AH_VERBATIM([00_CONFIG_H_CHECK],
  89 [/* Check that config.h is #included before system headers
  90    (this works only for glibc, but that should be enough).  */
  91 #if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
  92 #  error config.h must be #included before system headers
  93 #endif
  94 #define __CONFIG_H__ 1])
  95
  96 # If we are on a DOS filesystem, we must use gdb.ini rather than
  97 # .gdbinit.
  98 case "${host}" in
  99   *-*-msdos* | *-*-go32* | *-*-mingw32* | *-*-windows*)
 100     GDBINIT="gdb.ini"
 101     AC_CONFIG_FILES(gdb.ini:gdbinit.in)
 102     ;;
 103   *)
 104     GDBINIT=".gdbinit"
 105     AC_CONFIG_FILES(.gdbinit:gdbinit.in)
 106     ;;
 107 esac
 108 AC_SUBST(GDBINIT)
 109
 110 #We need this for the host.  BOUT header is in host order.
 111 AC_C_BIGENDIAN
 112
 113 te_file=generic
 114
 115 # Makefile target for installing gas in $(tooldir)/bin.
 116 install_tooldir=install-exec-tooldir
 117
 118 canon_targets=""
 119 all_targets=no
 120 if test -n "$enable_targets" ; then
 121   for t in `echo $enable_targets | sed 's/,/ /g'`; do
 122     if test $t = "all"; then
 123       all_targets=yes
 124       continue
 125     fi
 126     result=`$ac_config_sub $t 2>/dev/null`
 127     if test -n "$result" ; then
 128       canon_targets="$canon_targets $result"
 129 #    else
 130 #      # Permit "all", etc.  We don't support it yet though.
 131 #      canon_targets="$canon_targets $t"
 132     fi
 133   done
 134   GAS_UNIQ(canon_targets)
 135 fi
 136
 137 emulations=""
 138
 139 for this_target in $target $canon_targets ; do
 140
 141     targ=${this_target}
 142     . ${srcdir}/configure.tgt
 143
 144     case ${target_cpu} in
 145       crisv32)
 146         AC_DEFINE_UNQUOTED(DEFAULT_CRIS_ARCH, $arch,
 147                            [Default CRIS architecture.])
 148         ;;
 149     esac
 150
 151     if test ${this_target} = $target ; then
 152       target_cpu_type=${cpu_type}
 153     elif test ${target_cpu_type} != ${cpu_type} ; then
 154       continue
 155     fi
 156
 157     generic_target=${cpu_type}-${target_vendor}-${target_os}
 158     case ${generic_target} in
 159       i386-*-sco3.2v5*)
 160         if test ${this_target} = $target; then
 161           AC_DEFINE(SCO_ELF, 1, [Define if defaulting to ELF on SCO 5.])
 162         fi
 163         ;;
 164
 165       i386-*-msdosdjgpp* \
 166       | i386-*-go32* \
 167       | i386-go32-rtems*)
 168         AC_DEFINE(STRICTCOFF, 1, [Using strict COFF?])
 169         ;;
 170
 171       i860-*-*)
 172         AC_MSG_WARN(GAS support for ${generic_target} is preliminary and a work in progress)
 173         ;;
 174
 175       microblaze*)
 176         ;;
 177
 178 changequote(,)dnl
 179       ppc-*-aix[5-9].*)
 180 changequote([,])dnl
 181         AC_DEFINE(AIX_WEAK_SUPPORT, 1,
 182                   [Define if using AIX 5.2 value for C_WEAKEXT.])
 183         ;;
 184       ppc-*-solaris*)
 185         if test ${this_target} = $target; then
 186           AC_DEFINE(TARGET_SOLARIS_COMMENT, 1,
 187                     [Define if default target is PowerPC Solaris.])
 188         fi
 189         if test x${endian} = xbig; then
 190           AC_MSG_ERROR(Solaris must be configured little endian)
 191         fi
 192         ;;
 193
 194       sh*-*-symbianelf*)
 195         AC_DEFINE(TARGET_SYMBIAN, 1, [Define if target is Symbian OS.])
 196         ;;
 197     esac
 198
 199     if test ${this_target} = $target ; then
 200       endian_def=
 201       if test x${endian} = xbig; then
 202         endian_def=1
 203       elif test x${endian} = xlittle; then
 204         endian_def=0
 205       fi
 206       if test x${endian_def} != x; then
 207         AC_DEFINE_UNQUOTED(TARGET_BYTES_BIG_ENDIAN, $endian_def,
 208                            [Define as 1 if big endian.])
 209       fi
 210     fi
 211
 212 # Other random stuff.
 213
 214     case ${cpu_type} in
 215       mips)
 216         # Set mips_cpu to the name of the default CPU.
 217         case ${target_cpu} in
 218           mips | mipsbe | mipseb | mipsle | mipsel | mips64 | mips64el)
 219             mips_cpu=from-abi
 220             ;;
 221           mipsisa32 | mipsisa32el)
 222             mips_cpu=mips32
 223             ;;
 224           mipsisa32r2 | mipsisa32r2el)
 225             mips_cpu=mips32r2
 226             ;;
 227           mipsisa32r3 | mipsisa32r3el)
 228             mips_cpu=mips32r3
 229             ;;
 230           mipsisa32r5 | mipsisa32r5el)
 231             mips_cpu=mips32r5
 232             ;;
 233           mipsisa32r6 | mipsisa32r6el)
 234             mips_cpu=mips32r6
 235             ;;
 236           mipsisa64 | mipsisa64el)
 237             mips_cpu=mips64
 238             ;;
 239           mipsisa64r2 | mipsisa64r2el)
 240             mips_cpu=mips64r2
 241             ;;
 242           mipsisa64r3 | mipsisa64r3el)
 243             mips_cpu=mips64r3
 244             ;;
 245           mipsisa64r5 | mipsisa64r5el)
 246             mips_cpu=mips64r5
 247             ;;
 248           mipsisa64r6 | mipsisa64r6el)
 249             mips_cpu=mips64r6
 250             ;;
 251           mipstx39 | mipstx39el)
 252             mips_cpu=r3900
 253             ;;
 254           mips64vr | mips64vrel)
 255             mips_cpu=vr4100
 256             ;;
 257           mipsisa32r2* | mipsisa64r2*)
 258 changequote(,)dnl
 259             mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..r2//' -e 's/el$//'`
 260 changequote([,])dnl
 261             ;;
 262           mipsisa32r6* | mipsisa64r6*)
 263 changequote(,)dnl
 264             mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..r6//' -e 's/el$//'`
 265 changequote([,])dnl
 266             ;;
 267           mips64* | mipsisa64* | mipsisa32*)
 268 changequote(,)dnl
 269             mips_cpu=`echo $target_cpu | sed -e 's/[a-z]*..//' -e 's/el$//'`
 270 changequote([,])dnl
 271             ;;
 272           mips*)
 273 changequote(,)dnl
 274             mips_cpu=`echo $target_cpu | sed -e 's/^mips//' -e 's/el$//'`
 275 changequote([,])dnl
 276             ;;
 277           *)
 278             AC_MSG_ERROR($target_cpu isn't a supported MIPS CPU name)
 279             ;;
 280         esac
 281         # See whether it's appropriate to set E_MIPS_ABI_O32 for o32
 282         # binaries.  It's a GNU extension that some OSes don't understand.
 283         case ${target} in
 284           *-*-irix*)
 285             use_e_mips_abi_o32=0
 286             ;;
 287           *)
 288             use_e_mips_abi_o32=1
 289             ;;
 290         esac
 291         # Decide whether to generate 32-bit or 64-bit code by default.
 292         # Used to resolve -march=from-abi when an embedded ABI is selected.
 293         case ${target} in
 294           mips64*-*-* | mipsisa64*-*-*)
 295             mips_default_64bit=1
 296             ;;
 297           *)
 298             mips_default_64bit=0
 299             ;;
 300         esac
 301         # Decide which ABI to target by default.
 302         case ${target} in
 303           mips64*-linux* | mips-sgi-irix6* | mips64*-freebsd* | mips64*-kfreebsd*-gnu)
 304             mips_default_abi=N32_ABI
 305             ;;
 306           mips*-linux* | mips*-freebsd* | mips*-kfreebsd*-gnu)
 307             mips_default_abi=O32_ABI
 308             ;;
 309           mips64*-openbsd*)
 310             mips_default_abi=N64_ABI
 311             ;;
 312           *)
 313             mips_default_abi=NO_ABI
 314             ;;
 315         esac
 316         AC_DEFINE_UNQUOTED(MIPS_CPU_STRING_DEFAULT, "$mips_cpu",
 317                            [Default CPU for MIPS targets. ])
 318         AC_DEFINE_UNQUOTED(USE_E_MIPS_ABI_O32, $use_e_mips_abi_o32,
 319                            [Allow use of E_MIPS_ABI_O32 on MIPS targets. ])
 320         AC_DEFINE_UNQUOTED(MIPS_DEFAULT_64BIT, $mips_default_64bit,
 321                            [Generate 64-bit code by default on MIPS targets. ])
 322         AC_DEFINE_UNQUOTED(MIPS_DEFAULT_ABI, $mips_default_abi,
 323                            [Choose a default ABI for MIPS targets. ])
 324         ;;
 325     esac
 326
 327     # Do we need the opcodes library?
 328     case ${cpu_type} in
 329       vax | tic30)
 330         ;;
 331
 332       *)
 333         need_opcodes=yes
 334
 335         case "${enable_shared}" in
 336         yes) shared_opcodes=true ;;
 337         *opcodes*) shared_opcodes=true ;;
 338         *) shared_opcodes=false ;;
 339         esac
 340         ;;
 341     esac
 342
 343     # Any other special object files needed ?
 344     case ${cpu_type} in
 345
 346       bfin)
 347         echo ${extra_objects} | grep -s "bfin-parse.o"
 348         if test $? -ne 0 ; then
 349           extra_objects="$extra_objects bfin-parse.o"
 350         fi
 351
 352         echo ${extra_objects} | grep -s "bfin-lex-wrapper.o"
 353         if test $? -ne 0 ; then
 354           extra_objects="$extra_objects bfin-lex-wrapper.o"
 355         fi
 356         ;;
 357
 358       epiphany | fr30 | ip2k | iq2000 | lm32 | m32r | or1k)
 359         using_cgen=yes
 360         ;;
 361
 362       m32c)
 363         using_cgen=yes
 364         ;;
 365       frv)
 366         using_cgen=yes
 367         ;;
 368       m68k)
 369         case ${extra_objects} in
 370         *m68k-parse.o*) ;;
 371         *) extra_objects="$extra_objects m68k-parse.o" ;;
 372         esac
 373         ;;
 374
 375       mep)
 376         using_cgen=yes
 377         ;;
 378
 379       mips)
 380         echo ${extra_objects} | grep -s "itbl-parse.o"
 381         if test $? -ne 0 ; then
 382           extra_objects="$extra_objects itbl-parse.o"
 383         fi
 384
 385         echo ${extra_objects} | grep -s "itbl-lex-wrapper.o"
 386         if test $? -ne 0 ; then
 387           extra_objects="$extra_objects itbl-lex-wrapper.o"
 388         fi
 389
 390         echo ${extra_objects} | grep -s "itbl-ops.o"
 391         if test $? -ne 0 ; then
 392           extra_objects="$extra_objects itbl-ops.o"
 393         fi
 394         ;;
 395
 396       mt)
 397         using_cgen=yes
 398         ;;
 399
 400       nds32)
 401         # Decide BASELINE, REDUCED_REGS, FPU_DP_EXT, FPU_SP_EXT features
 402         # based on arch_name.
 403         AC_MSG_CHECKING(for default configuration of --with-arch)
 404         if test "x${with_arch}" != x; then
 405           case ${with_arch} in
 406             v2j | v2s | v2f | v2 | v3m | v3j | v3s | v3f | v3 )
 407               AC_DEFINE_UNQUOTED(NDS32_DEFAULT_ARCH_NAME, "$with_arch",
 408                                  [Define value for nds32_arch_name])
 409               ;;
 410             *)
 411               AC_MSG_ERROR(This kind of arch name does *NOT* exist!)
 412               ;;
 413           esac
 414         fi
 415         AC_MSG_RESULT($with_arch)
 416
 417         # Decide features one by one.
 418         AC_MSG_CHECKING(for default configuration of --enable-dx-regs)
 419         if test "x${enable_dx_regs}" = xyes; then
 420           AC_DEFINE(NDS32_DEFAULT_DX_REGS, 1,
 421                     [Define value for nds32_dx_regs])
 422         else
 423           AC_DEFINE(NDS32_DEFAULT_DX_REGS, 0,
 424                     [Define default value for nds32_dx_regs])
 425         fi
 426         AC_MSG_RESULT($enable_dx_regs)
 427
 428         AC_MSG_CHECKING(for default configuration of --enable-perf-ext)
 429         if test "x${enable_perf_ext}" = xno; then
 430           AC_DEFINE(NDS32_DEFAULT_PERF_EXT, 0,
 431                     [Define value for nds32_perf_ext])
 432         else
 433           AC_DEFINE(NDS32_DEFAULT_PERF_EXT, 1,
 434                     [Define default value for nds32_perf_ext])
 435         fi
 436         AC_MSG_RESULT($enable_perf_ext)
 437
 438         AC_MSG_CHECKING(for default configuration of --enable-perf-ext2)
 439         if test "x${enable_perf_ext2}" = xno; then
 440           AC_DEFINE(NDS32_DEFAULT_PERF_EXT2, 0,
 441                     [Define value for nds32_perf_ext2])
 442         else
 443           AC_DEFINE(NDS32_DEFAULT_PERF_EXT2, 1,
 444                     [Define default value for nds32_perf_ext2])
 445         fi
 446         AC_MSG_RESULT($enable_perf_ext2)
 447
 448         AC_MSG_CHECKING(for default configuration of --enable-string-ext)
 449         if test "x${enable_string_ext}" = xno; then
 450           AC_DEFINE(NDS32_DEFAULT_STRING_EXT, 0,
 451                     [Define value for nds32_string_ext])
 452         else
 453           AC_DEFINE(NDS32_DEFAULT_STRING_EXT, 1,
 454                     [Define default value for nds32_string_ext])
 455         fi
 456         AC_MSG_RESULT($enable_string_ext)
 457
 458         AC_MSG_CHECKING(for default configuration of --enable-audio-ext)
 459         if test "x${enable_audio_ext}" = xno; then
 460           AC_DEFINE(NDS32_DEFAULT_AUDIO_EXT, 0,
 461                     [Define value for nds32_audio_ext])
 462         else
 463           AC_DEFINE(NDS32_DEFAULT_AUDIO_EXT, 1,
 464                     [Define default value for nds32_audio_ext])
 465         fi
 466         AC_MSG_RESULT($enable_audio_ext)
 467         ;;
 468
 469       i386 | s390 | sparc)
 470         if test $this_target = $target ; then
 471           AC_DEFINE_UNQUOTED(DEFAULT_ARCH, "${arch}", [Default architecture.])
 472         fi
 473         ;;
 474
 475       rl78)
 476         echo ${extra_objects} | grep -s "rl78-parse.o"
 477         if test $? -ne 0 ; then
 478           extra_objects="$extra_objects rl78-parse.o"
 479         fi
 480         ;;
 481
 482       rx)
 483         echo ${extra_objects} | grep -s "rx-parse.o"
 484         if test $? -ne 0 ; then
 485           extra_objects="$extra_objects rx-parse.o"
 486         fi
 487         ;;
 488
 489       xstormy16)
 490         using_cgen=yes
 491         ;;
 492
 493       xc16x)
 494         using_cgen=yes
 495         ;;
 496
 497       xtensa)
 498         echo ${extra_objects} | grep -s "xtensa-relax.o"
 499         if test $? -ne 0 ; then
 500           extra_objects="$extra_objects xtensa-relax.o"
 501         fi
 502         ;;
 503
 504       *)
 505         ;;
 506     esac
 507
 508     if test $using_cgen = yes ; then
 509         case "x${extra_objects}" in
 510         *cgen.o*) ;;
 511         *) extra_objects="$extra_objects cgen.o" ;;
 512         esac
 513     fi
 514
 515 # See if we really can support this configuration with the emulation code.
 516
 517     if test $this_target = $target ; then
 518       obj_format=$fmt
 519       te_file=$em
 520     fi
 521
 522    case ${te_file} in
 523       vms) extra_objects="$extra_objects te-vms.o" ;;
 524    esac
 525
 526 # From target name and format, produce a list of supported emulations.
 527
 528     case ${generic_target}-${fmt} in
 529       mips-*-*-*)       case "$endian" in
 530                         big)    emulation="mipsbelf mipslelf mipself" ;;
 531                         *)      emulation="mipslelf mipsbelf mipself" ;;
 532                         esac ;;
 533       # i386-pc-pe-coff != i386-pc-coff.
 534       i386-*-pe-coff)   ;;
 535       # Uncommenting the next line will turn on support for i386 AOUT
 536       # for the default linux configuration
 537       # i386-*-linux*-elf) emulation="i386elf i386aout" ;;
 538       #
 539       i386-*-aout)      emulation="i386aout" ;;
 540       i386-*-coff)      emulation="i386coff" ;;
 541       i386-*-elf)       emulation="i386elf" ;;
 542
 543       # Always all formats.  The first stated emulation becomes the default.
 544       cris-*-*aout*)    emulation="crisaout criself" ;;
 545       cris-*-*)         emulation="criself crisaout" ;;
 546     esac
 547
 548     emulations="$emulations $emulation"
 549
 550 done
 551
 552 if test x$ac_default_compressed_debug_sections == xyes ; then
 553   AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.])
 554 fi
 555
 556 # Turn on all targets if possible
 557 if test ${all_targets} = "yes"; then
 558   case ${target_cpu_type} in
 559   i386)
 560     case ${obj_format} in
 561     aout)
 562       emulations="$emulations i386coff i386elf"
 563       ;;
 564     coff)
 565       emulations="$emulations i386aout i386elf"
 566     ;;
 567     elf)
 568       emulations="$emulations i386aout i386coff"
 569       ;;
 570     esac
 571   ;;
 572   x86_64)
 573     case ${obj_format} in
 574     aout)
 575       emulations="$emulations i386coff i386elf"
 576       ;;
 577     coff)
 578       emulations="$emulations i386aout i386elf"
 579     ;;
 580     elf)
 581       emulations="$emulations i386aout i386coff"
 582       ;;
 583     esac
 584   ;;
 585   esac
 586 fi
 587
 588 # PE code has way too many macros tweaking behaviour
 589 case ${te_file} in
 590   pe*) emulations="" ;;
 591 esac
 592
 593 # Assign floating point type.  Most processors with FP support
 594 # IEEE FP.  On those that don't support FP at all, usually IEEE
 595 # is emulated.
 596 case ${target_cpu} in
 597   vax | pdp11 ) atof=vax ;;
 598   *)            atof=ieee ;;
 599 esac
 600
 601 case "${obj_format}" in
 602   "") AC_MSG_ERROR(GAS does not know what format to use for target ${target}) ;;
 603 esac
 604
 605 # Unfortunately the cpu in cpu-opc.h file isn't always $(TARGET_CPU).
 606 cgen_cpu_prefix=""
 607 if test $using_cgen = yes ; then
 608   case ${target_cpu} in
 609     or1knd)
 610        cgen_cpu_prefix=or1k ;;
 611     *) cgen_cpu_prefix=${target_cpu} ;;
 612   esac
 613   AC_SUBST(cgen_cpu_prefix)
 614   AC_DEFINE(USING_CGEN, 1, [Using cgen code?])
 615 fi
 616
 617 dnl
 618 dnl Make sure the desired support files exist.
 619 dnl
 620
 621 if test ! -r ${srcdir}/config/tc-${target_cpu_type}.c; then
 622   AC_MSG_ERROR(GAS does not support target CPU ${target_cpu_type})
 623 fi
 624
 625 if test ! -r ${srcdir}/config/obj-${obj_format}.c; then
 626   AC_MSG_ERROR(GAS does not have support for object file format ${obj_format})
 627 fi
 628
 629 # Some COFF configurations want these random other flags set.
 630 case ${obj_format} in
 631   coff)
 632     case ${target_cpu_type} in
 633       i386) AC_DEFINE(I386COFF, 1, [Using i386 COFF?]) ;;
 634       m68k) AC_DEFINE(M68KCOFF, 1, [Using m68k COFF?]) ;;
 635       m88k) AC_DEFINE(M88KCOFF, 1, [Using m88k COFF?]) ;;
 636       x86_64) AC_DEFINE(I386COFF, 1, [Using i386 COFF?]) ;;
 637     esac
 638     ;;
 639 esac
 640
 641 # Getting this done right is going to be a bitch.  Each configuration specified
 642 # with --enable-targets=... should be checked for environment, format, cpu
 643 # setting.
 644 #
 645 # For each configuration, the necessary object file support code must be linked
 646 # in.  This might be only one, it might be up to four.  The necessary emulation
 647 # code needs to be provided, too.
 648 #
 649 # And then there's "--enable-targets=all"....
 650 #
 651 # For now, just always do it for MIPS ELF configurations.  Sigh.
 652
 653 formats="${obj_format}"
 654 emfiles=""
 655 EMULATIONS=""
 656 GAS_UNIQ(emulations)
 657 for em in . $emulations ; do
 658   case $em in
 659     .)  continue ;;
 660     mipsbelf | mipslelf | mipself)
 661         fmt=elf   file=mipself ;;
 662     *coff)
 663         fmt=coff  file=$em ;;
 664     *aout)
 665         fmt=aout file=$em ;;
 666     *elf)
 667         fmt=elf file=$em ;;
 668   esac
 669   formats="$formats $fmt"
 670   emfiles="$emfiles e-$file.o"
 671   EMULATIONS="$EMULATIONS &$em,"
 672 done
 673 GAS_UNIQ(formats)
 674 GAS_UNIQ(emfiles)
 675 if test `set . $formats ; shift ; echo $#` -gt 1 ; then
 676   for fmt in $formats ; do
 677     case $fmt in
 678       aout)     AC_DEFINE(OBJ_MAYBE_AOUT, 1,    [a.out support?])   ;;
 679       bout)     AC_DEFINE(OBJ_MAYBE_BOUT, 1,    [b.out support?])   ;;
 680       coff)     AC_DEFINE(OBJ_MAYBE_COFF, 1,    [COFF support?])    ;;
 681       ecoff)    AC_DEFINE(OBJ_MAYBE_ECOFF, 1,   [ECOFF support?])   ;;
 682       elf)      AC_DEFINE(OBJ_MAYBE_ELF, 1,     [ELF support?])     ;;
 683       generic)  AC_DEFINE(OBJ_MAYBE_GENERIC, 1, [generic support?]) ;;
 684       som)      AC_DEFINE(OBJ_MAYBE_SOM, 1,     [SOM support?])     ;;
 685     esac
 686     extra_objects="$extra_objects obj-$fmt.o"
 687   done
 688   obj_format=multi
 689 fi
 690 if test `set . $emfiles ; shift ; echo $#` -gt 0 ; then
 691   DEFAULT_EMULATION=`set . $emulations ; echo $2`
 692   # e-mipself has more than one emulation per file, e-i386* has just one at the
 693   # moment.  If only one emulation is specified, then don't define
 694   # USE_EMULATIONS or include any of the e-files as they will only be bloat.
 695   case "${obj_format}${emfiles}" in
 696     multi* | *mipself*)
 697       extra_objects="$extra_objects $emfiles"
 698       AC_DEFINE(USE_EMULATIONS, 1, [Use emulation support?]) ;;
 699   esac
 700 fi
 701 AC_SUBST(extra_objects)
 702 AC_DEFINE_UNQUOTED(EMULATIONS, $EMULATIONS, [Supported emulations.])
 703 AC_DEFINE_UNQUOTED(DEFAULT_EMULATION, "$DEFAULT_EMULATION",
 704                    [Default emulation.])
 705
 706 reject_dev_configs=yes
 707
 708 case ${reject_dev_configs}-${dev} in
 709   yes-yes) # Oops.
 710     AC_MSG_ERROR(GAS does not support the ${generic_target} configuration.)
 711     ;;
 712 esac
 713
 714 AC_SUBST(target_cpu_type)
 715 AC_SUBST(obj_format)
 716 AC_SUBST(te_file)
 717 AC_SUBST(install_tooldir)
 718 AC_SUBST(atof)
 719 dnl AC_SUBST(emulation)
 720
 721 # do we need the opcodes library?
 722 case "${need_opcodes}" in
 723 yes)
 724   OPCODES_LIB=../opcodes/libopcodes.la
 725   ;;
 726 esac
 727
 728 AC_SUBST(OPCODES_LIB)
 729
 730 AC_DEFINE_UNQUOTED(TARGET_ALIAS,        "${target_alias}", [Target alias.])
 731 AC_DEFINE_UNQUOTED(TARGET_CANONICAL,    "${target}",       [Canonical target.])
 732 AC_DEFINE_UNQUOTED(TARGET_CPU,          "${target_cpu}",   [Target CPU.])
 733 AC_DEFINE_UNQUOTED(TARGET_VENDOR,       "${target_vendor}", [Target vendor.])
 734 AC_DEFINE_UNQUOTED(TARGET_OS,           "${target_os}",    [Target OS.])
 735
 736 AC_PROG_YACC
 737 AM_PROG_LEX
 738
 739 ALL_LINGUAS="fr tr es rw id ru fi ja"
 740 ZW_GNU_GETTEXT_SISTER_DIR
 741 AM_PO_SUBDIRS
 742
 743 AM_MAINTAINER_MODE
 744 AM_CONDITIONAL(GENINSRC_NEVER, false)
 745 AC_EXEEXT
 746
 747 AC_CHECK_HEADERS(string.h stdlib.h memory.h strings.h unistd.h errno.h sys/types.h limits.h locale.h time.h sys/stat.h)
 748 ACX_HEADER_STRING
 749
 750 # Put this here so that autoconf's "cross-compiling" message doesn't confuse
 751 # people who are not cross-compiling but are compiling cross-assemblers.
 752 AC_MSG_CHECKING(whether compiling a cross-assembler)
 753 if test "${host}" = "${target}"; then
 754   cross_gas=no
 755 else
 756   cross_gas=yes
 757   AC_DEFINE(CROSS_COMPILE, 1, [Compiling cross-assembler?])
 758 fi
 759 AC_MSG_RESULT($cross_gas)
 760
 761 dnl ansidecl.h will deal with const
 762 dnl AC_C_CONST
 763 AC_FUNC_ALLOCA
 764 AC_C_INLINE
 765
 766 # VMS doesn't have unlink.
 767 AC_CHECK_FUNCS(unlink remove, break)
 768 AC_CHECK_FUNCS(sbrk setlocale)
 769
 770 AM_LC_MESSAGES
 771
 772 # do we need the math library?
 773 case "${need_libm}" in
 774 yes)
 775   LT_LIB_M
 776   AC_SUBST(LIBM)
 777   ;;
 778 esac
 779
 780 # Some non-ANSI preprocessors botch requoting inside strings.  That's bad
 781 # enough, but on some of those systems, the assert macro relies on requoting
 782 # working properly!
 783 GAS_WORKING_ASSERT
 784
 785 # On some systems, the system header files may not declare malloc, realloc,
 786 # and free.  There are places where gas needs these functions to have been
 787 # declared -- such as when taking their addresses.
 788 gas_test_headers="
 789 #ifdef HAVE_MEMORY_H
 790 #include <memory.h>
 791 #endif
 792 #ifdef HAVE_STRING_H
 793 #include <string.h>
 794 #else
 795 #ifdef HAVE_STRINGS_H
 796 #include <strings.h>
 797 #endif
 798 #endif
 799 #ifdef HAVE_STDLIB_H
 800 #include <stdlib.h>
 801 #endif
 802 #ifdef HAVE_UNISTD_H
 803 #include <unistd.h>
 804 #endif
 805 "
 806
 807 # Does errno.h declare errno, or do we have to add a separate declaration
 808 # for it?
 809 GAS_CHECK_DECL_NEEDED(errno, f, int f, [
 810 #ifdef HAVE_ERRNO_H
 811 #include <errno.h>
 812 #endif
 813 ])
 814
 815 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
 816 AC_CACHE_VAL(gas_cv_decl_getopt_unistd_h,
 817 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],
 818 gas_cv_decl_getopt_unistd_h=yes, gas_cv_decl_getopt_unistd_h=no)])
 819 AC_MSG_RESULT($gas_cv_decl_getopt_unistd_h)
 820 if test $gas_cv_decl_getopt_unistd_h = yes; then
 821   AC_DEFINE([HAVE_DECL_GETOPT], 1,
 822             [Is the prototype for getopt in <unistd.h> in the expected format?])
 823 fi
 824
 825 GAS_CHECK_DECL_NEEDED(environ, f, char **f, $gas_test_headers)
 826 GAS_CHECK_DECL_NEEDED(ffs, f, int (*f)(int), $gas_test_headers)
 827 GAS_CHECK_DECL_NEEDED(free, f, void (*f)(), $gas_test_headers)
 828 GAS_CHECK_DECL_NEEDED(malloc, f, char *(*f)(), $gas_test_headers)
 829 GAS_CHECK_DECL_NEEDED(sbrk, f, char *(*f)(), $gas_test_headers)
 830 GAS_CHECK_DECL_NEEDED(strstr, f, char *(*f)(), $gas_test_headers)
 831
 832 AC_CHECK_DECLS([free, getenv, malloc, mempcpy, realloc, stpcpy, strstr, vsnprintf, asprintf])
 833
 834 BFD_BINARY_FOPEN
 835
 836 # Link in zlib if we can.  This allows us to write compressed debug sections.
 837 AM_ZLIB
 838
 839 # Support for VMS timestamps via cross compile
 840
 841 if test "$ac_cv_header_time_h" = yes; then
 842   GAS_HAVE_TIME_TYPE_MEMBER(struct tm, tm_gmtoff)
 843 fi
 844
 845 if test "$ac_cv_header_sys_stat_h" = yes; then
 846     GAS_HAVE_SYS_STAT_TYPE_MEMBER(struct stat, st_mtim, tv_sec)
 847     GAS_HAVE_SYS_STAT_TYPE_MEMBER(struct stat, st_mtim, tv_nsec)
 848 fi
 849
 850
 851 dnl Required for html, pdf, install-pdf and install-html targets.
 852 AC_SUBST(datarootdir)
 853 AC_SUBST(docdir)
 854 AC_SUBST(htmldir)
 855 AC_SUBST(pdfdir)
 856
 857 dnl This must come last.
 858
 859 dnl We used to make symlinks to files in the source directory, but now
 860 dnl we just use the right name for .c files, and create .h files in
 861 dnl the build directory which include the right .h file.  Make sure
 862 dnl the old symlinks don't exist, so that a reconfigure in an existing
 863 dnl directory behaves reasonably.
 864
 865 AC_CONFIG_FILES(Makefile doc/Makefile po/Makefile.in:po/Make-in)
 866 AC_CONFIG_COMMANDS([default],
 867 [rm -f targ-cpu.c targ-cpu.h obj-format.h obj-format.c targ-env.h atof-targ.c itbl-cpu.h
 868  echo '#include "tc-'"${target_cpu_type}"'.h"' > targ-cpu.h
 869  echo '#include "obj-'"${obj_format}"'.h"' > obj-format.h
 870  echo '#include "te-'"${te_file}"'.h"' > targ-env.h
 871  echo '#include "itbl-'"${target_cpu_type}"'.h"' > itbl-cpu.h
 872  if test "x$cgen_cpu_prefix" != x ; then
 873    echo '#include "opcodes/'"${cgen_cpu_prefix}"'-desc.h"' > cgen-desc.h
 874  fi],
 875 [target_cpu_type=${target_cpu_type}
 876  cgen_cpu_prefix=${cgen_cpu_prefix}
 877  obj_format=${obj_format}
 878  te_file=${te_file}])
 879
 880 AC_OUTPUT