libiberty/configure.ac

   1 dnl Process this file with autoconf to produce a configure script
   2
   3 AC_PREREQ(2.59)
   4 AC_INIT
   5 AC_CONFIG_SRCDIR([xmalloc.c])
   6
   7 # This works around the fact that libtool configuration may change LD
   8 # for this particular configuration, but some shells, instead of
   9 # keeping the changes in LD private, export them just because LD is
  10 # exported.  We don't use libtool yet, but some day we might, so...
  11 ORIGINAL_LD_FOR_MULTILIBS=$LD
  12
  13 dnl We use these options to decide which functions to include.
  14 AC_ARG_WITH(target-subdir,
  15 [  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
  16 AC_ARG_WITH(build-subdir,
  17 [  --with-build-subdir=SUBDIR       Configuring in a subdirectory for build])
  18 AC_ARG_WITH(cross-host,
  19 [  --with-cross-host=HOST           Configuring with a cross compiler])
  20 AC_ARG_WITH(newlib,
  21 [  --with-newlib                    Configuring with newlib])
  22
  23 if test "${srcdir}" = "."; then
  24   if test -n "${with_build_subdir}"; then
  25     libiberty_topdir="${srcdir}/../.."
  26     with_target_subdir=
  27   elif test -z "${with_target_subdir}"; then
  28     libiberty_topdir="${srcdir}/.."
  29   else
  30     if test "${with_target_subdir}" != "."; then
  31       libiberty_topdir="${srcdir}/${with_multisrctop}../.."
  32     else
  33       libiberty_topdir="${srcdir}/${with_multisrctop}.."
  34     fi
  35   fi
  36 else
  37   libiberty_topdir="${srcdir}/.."
  38 fi
  39 AC_SUBST(libiberty_topdir)
  40 AC_CONFIG_AUX_DIR($libiberty_topdir)
  41
  42 dnl Very limited version of automake's enable-maintainer-mode
  43
  44 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  45   dnl maintainer-mode is disabled by default
  46   AC_ARG_ENABLE(maintainer-mode,
  47 [  --enable-maintainer-mode
  48                           enable make rules and dependencies not useful
  49                           (and sometimes confusing) to the casual installer],
  50       maintainer_mode=$enableval,
  51       maintainer_mode=no)
  52
  53 AC_MSG_RESULT($maintainer_mode)
  54
  55 if test "$maintainer_mode" = "yes"; then
  56   MAINT=''
  57   NOTMAINT='#'
  58 else
  59   MAINT='#'
  60   NOTMAINT=''
  61 fi
  62 AC_SUBST(MAINT)dnl
  63 AC_SUBST(NOTMAINT)dnl
  64
  65 # Do we have a single-tree copy of texinfo?  Even if we do, we can't
  66 # rely on it - libiberty is built before texinfo.
  67 AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
  68 if test "x$MAKEINFO" = "x"; then
  69     MAKEINFO="@echo makeinfo missing; true"
  70     BUILD_INFO=
  71 else
  72     BUILD_INFO=info
  73     case "$MAKEINFO" in
  74       */missing\ makeinfo*)
  75         BUILD_INFO=
  76         AC_MSG_WARN([
  77 *** Makeinfo is missing. Info documentation will not be built.])
  78         ;;
  79       *)
  80         case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
  81           x*\ [[1-3]].* )
  82             MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
  83             BUILD_INFO=
  84             AC_MSG_WARN([
  85 *** Makeinfo is too old. Info documentation will not be built.])
  86           ;;
  87         esac
  88         ;;
  89     esac
  90 fi
  91 AC_SUBST(MAKEINFO)
  92 AC_SUBST(BUILD_INFO)
  93
  94 AC_CHECK_PROG(PERL, perl, perl, )
  95 if test x"$PERL" = x""; then
  96   HAVE_PERL='#'
  97 else
  98   HAVE_PERL=''
  99 fi
 100 AC_SUBST(HAVE_PERL)
 101
 102 AC_CANONICAL_HOST
 103
 104 dnl When we start using automake:
 105 dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
 106
 107 dnl These must be called before AM_PROG_LIBTOOL, because it may want
 108 dnl to call AC_CHECK_PROG.
 109 AC_CHECK_TOOL(AR, ar)
 110 AC_CHECK_TOOL(RANLIB, ranlib, :)
 111
 112 dnl When switching to automake, replace the following with AM_ENABLE_MULTILIB.
 113 # Add --enable-multilib to configure.
 114 # Default to --enable-multilib
 115 AC_ARG_ENABLE(multilib,
 116 [  --enable-multilib       build many library versions (default)],
 117 [case "$enableval" in
 118   yes) multilib=yes ;;
 119   no)  multilib=no ;;
 120   *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
 121  esac],
 122               [multilib=yes])
 123
 124 # Even if the default multilib is not a cross compilation,
 125 # it may be that some of the other multilibs are.
 126 if test $cross_compiling = no && test $multilib = yes \
 127    && test "x${with_multisubdir}" != x ; then
 128    cross_compiling=maybe
 129 fi
 130
 131 GCC_NO_EXECUTABLES
 132 AC_PROG_CC
 133 AC_SYS_LARGEFILE
 134 AC_PROG_CPP_WERROR
 135
 136 ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wc++-compat \
 137                           -Wstrict-prototypes], [ac_libiberty_warn_cflags])
 138 ACX_PROG_CC_WARNING_ALMOST_PEDANTIC([], [ac_libiberty_warn_cflags])
 139
 140 AC_PROG_CC_C_O
 141 # autoconf is lame and doesn't give us any substitution variable for this.
 142 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 143   NO_MINUS_C_MINUS_O=yes
 144 else
 145   OUTPUT_OPTION='-o $@'
 146 fi
 147 AC_SUBST(NO_MINUS_C_MINUS_O)
 148 AC_SUBST(OUTPUT_OPTION)
 149
 150 AC_C_CONST
 151 AC_C_INLINE
 152 AC_C_BIGENDIAN
 153
 154 dnl When we start using libtool:
 155 dnl Default to a non shared library.  This may be overridden by the
 156 dnl configure option --enable-shared.
 157 dnl AM_DISABLE_SHARED
 158
 159 dnl When we start using libtool:
 160 dnl AM_PROG_LIBTOOL
 161
 162 dnl When we start using automake:
 163 dnl AM_CONFIG_HEADER(config.h:config.in)
 164 AC_CONFIG_HEADER(config.h:config.in)
 165
 166 dnl When we start using automake:
 167 dnl AM_MAINTAINER_MODE
 168 dnl AC_EXEEXT
 169
 170 dnl When we start using automake:
 171 dnl AM_PROG_INSTALL
 172 AC_PROG_INSTALL
 173
 174 # Don't build the shared library for build.
 175 if [[ -n "${with_build_subdir}" ]]; then
 176   enable_shared=no
 177 fi
 178
 179 frag=
 180 case "${host}" in
 181   rs6000-ibm-aix3.1 | rs6000-ibm-aix)
 182                         frag=mh-aix ;;
 183   *-*-cxux7*)           frag=mh-cxux7 ;;
 184   *-*-freebsd2.1.*)     frag=mh-fbsd21 ;;
 185   *-*-freebsd2.2.[[012]])       frag=mh-fbsd21 ;;
 186   i370-*-opened*)       frag=mh-openedition ;;
 187   i[[34567]]86-*-windows*)      frag=mh-windows ;;
 188 esac
 189
 190 if [[ -n "${frag}" ]]; then
 191   frag=${libiberty_topdir}/libiberty/config/$frag
 192 fi
 193
 194 # If they didn't specify --enable-shared, don't generate shared libs.
 195 case "${enable_shared}" in
 196   yes) shared=yes ;;
 197   no) shared=no ;;
 198   "") shared=no ;;
 199   *) shared=yes ;;
 200 esac
 201 if [[ "${shared}" = "yes" ]]; then
 202   case "${host}" in
 203     *-*-cygwin*)        ;;
 204     alpha*-*-linux*)    PICFLAG=-fPIC ;;
 205     arm*-*-*)           PICFLAG=-fPIC ;;
 206     hppa*-*-*)          PICFLAG=-fPIC ;;
 207     i370-*-*)           PICFLAG=-fPIC ;;
 208     ia64-*-*)           PICFLAG=-fpic ;;
 209     i[[34567]]86-*-* | x86_64-*-*)
 210                         PICFLAG=-fpic ;;
 211     m68k-*-*)           PICFLAG=-fpic ;;
 212     mips*-*-linux*)     PICFLAG=-fPIC ;;
 213     powerpc*-*-aix*)    ;;
 214     powerpc*-*-*)       PICFLAG=-fPIC ;;
 215     sparc*-*-*)         case "${CFLAGS}" in
 216                           *-fpic* ) PICFLAG=-fpic ;;
 217                           * ) PICFLAG=-fPIC ;;
 218                         esac ;;
 219     s390*-*-*)          PICFLAG=-fpic ;;
 220   esac
 221 fi
 222 AC_SUBST(PICFLAG)
 223
 224 echo "# Warning: this fragment is automatically generated" > temp-frag
 225
 226 if [[ -n "${frag}" ]] && [[ -f "${frag}" ]]; then
 227   echo "Appending ${frag} to xhost-mkfrag"
 228   echo "# Following fragment copied from ${frag}" >> temp-frag
 229   cat ${frag} >> temp-frag
 230 fi
 231
 232 # record if we want to build shared libs.
 233 if [[ "${shared}" = "yes" ]]; then
 234   echo enable_shared = yes >> temp-frag
 235 else
 236   echo enable_shared = no >> temp-frag
 237 fi
 238
 239 frag=xhost-mkfrag
 240 ${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
 241
 242 host_makefile_frag=${frag}
 243 AC_SUBST_FILE(host_makefile_frag)
 244
 245 # It's OK to check for header files.  Although the compiler may not be
 246 # able to link anything, it had better be able to at least compile
 247 # something.
 248 AC_CHECK_HEADERS(sys/file.h sys/param.h limits.h stdlib.h malloc.h string.h unistd.h strings.h sys/time.h time.h sys/resource.h sys/stat.h sys/mman.h fcntl.h alloca.h sys/pstat.h sys/sysmp.h sys/sysinfo.h machine/hal_sysinfo.h sys/table.h sys/sysctl.h sys/systemcfg.h stdint.h stdio_ext.h)
 249 AC_HEADER_SYS_WAIT
 250 AC_HEADER_TIME
 251
 252 libiberty_AC_DECLARE_ERRNO
 253
 254 # Determine the size of an int for struct fibnode.
 255 AC_CHECK_SIZEOF([int])
 256
 257 AC_CHECK_TYPE(uintptr_t, unsigned long)
 258
 259 # Look for a 64-bit type.
 260 AC_MSG_CHECKING([for a 64-bit type])
 261 AC_CACHE_VAL(liberty_cv_uint64,
 262 [AC_TRY_COMPILE(
 263 [#ifdef HAVE_STDINT_H
 264 #include <stdint.h>
 265 #endif],
 266 [extern uint64_t foo;],
 267 liberty_cv_uint64=uint64_t,
 268 [AC_TRY_COMPILE(
 269 [#ifdef HAVE_LIMITS_H
 270 #include <limits.h>
 271 #endif
 272 #ifndef CHAR_BIT
 273 #define CHAR_BIT 8
 274 #endif],
 275 [extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
 276 liberty_cv_uint64="unsigned long",
 277 [AC_TRY_COMPILE(
 278 [#ifdef HAVE_LIMITS_H
 279 #include <limits.h>
 280 #endif
 281 #ifndef CHAR_BIT
 282 #define CHAR_BIT 8
 283 #endif],
 284 [extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
 285 liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
 286 AC_MSG_RESULT($liberty_cv_uint64)
 287 if test "$liberty_cv_uint64" != none; then
 288   AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
 289                      [Define to an unsigned 64-bit type available in the compiler.])
 290 fi
 291
 292 # Given the above check, we always have uintptr_t or a fallback
 293 # definition.  So define HAVE_UINTPTR_T in case any imported code
 294 # relies on it.
 295 AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
 296
 297 AC_TYPE_PID_T
 298
 299 # This is the list of functions which libiberty will provide if they
 300 # are not available on the host.
 301
 302 funcs="asprintf"
 303 funcs="$funcs atexit"
 304 funcs="$funcs basename"
 305 funcs="$funcs bcmp"
 306 funcs="$funcs bcopy"
 307 funcs="$funcs bsearch"
 308 funcs="$funcs bzero"
 309 funcs="$funcs calloc"
 310 funcs="$funcs clock"
 311 funcs="$funcs ffs"
 312 funcs="$funcs getcwd"
 313 funcs="$funcs getpagesize"
 314 funcs="$funcs gettimeofday"
 315 funcs="$funcs index"
 316 funcs="$funcs insque"
 317 funcs="$funcs memchr"
 318 funcs="$funcs memcmp"
 319 funcs="$funcs memcpy"
 320 funcs="$funcs memmem"
 321 funcs="$funcs memmove"
 322 funcs="$funcs mempcpy"
 323 funcs="$funcs memset"
 324 funcs="$funcs mkstemps"
 325 funcs="$funcs putenv"
 326 funcs="$funcs random"
 327 funcs="$funcs rename"
 328 funcs="$funcs rindex"
 329 funcs="$funcs setenv"
 330 funcs="$funcs snprintf"
 331 funcs="$funcs sigsetmask"
 332 funcs="$funcs stpcpy"
 333 funcs="$funcs stpncpy"
 334 funcs="$funcs strcasecmp"
 335 funcs="$funcs strchr"
 336 funcs="$funcs strdup"
 337 funcs="$funcs strncasecmp"
 338 funcs="$funcs strndup"
 339 funcs="$funcs strrchr"
 340 funcs="$funcs strstr"
 341 funcs="$funcs strtod"
 342 funcs="$funcs strtol"
 343 funcs="$funcs strtoul"
 344 funcs="$funcs strverscmp"
 345 funcs="$funcs tmpnam"
 346 funcs="$funcs vasprintf"
 347 funcs="$funcs vfprintf"
 348 funcs="$funcs vprintf"
 349 funcs="$funcs vsnprintf"
 350 funcs="$funcs vsprintf"
 351 funcs="$funcs waitpid"
 352
 353 # Also in the old function.def file: alloca, vfork, getopt.
 354
 355 vars="sys_errlist sys_nerr sys_siglist"
 356
 357 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 358 checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"
 359 checkfuncs="$checkfuncs getsysinfo table sysctl wait3 wait4 __fsetlocking"
 360
 361 # These are neither executed nor required, but they help keep
 362 # autoheader happy without adding a bunch of text to acconfig.h.
 363 if test "x" = "y"; then
 364   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock \
 365   getcwd getpagesize gettimeofday index insque mkstemps memchr memcmp memcpy \
 366   memmem memmove mempcpy memset putenv random rename rindex sigsetmask \
 367   strcasecmp setenv stpcpy stpncpy strchr strdup strncasecmp strndup strrchr strstr \
 368   strtod strtol strtoul strverscmp tmpnam vasprintf vfprintf vprintf \
 369   vsprintf waitpid getrusage on_exit psignal strerror strsignal \
 370   sysconf times sbrk gettimeofday ffs snprintf vsnprintf \
 371   pstat_getstatic pstat_getdynamic sysmp getsysinfo table sysctl wait3 wait4 \
 372   realpath canonicalize_file_name __fsetlocking)
 373   AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
 374   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
 375   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
 376   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
 377 fi
 378
 379 # For each of these functions, if the host does not provide the
 380 # function we want to put FN.o in LIBOBJS, and if the host does
 381 # provide the function, we want to define HAVE_FN in config.h.
 382
 383 setobjs=
 384 CHECK=
 385 target_header_dir=
 386 if test -n "${with_target_subdir}"; then
 387
 388   # We are being configured as a target library.  AC_REPLACE_FUNCS
 389   # may not work correctly, because the compiler may not be able to
 390   # link executables.  Note that we may still be being configured
 391   # native.
 392
 393   # If we are being configured for newlib, we know which functions
 394   # newlib provide and which ones we will be expected to provide.
 395
 396   if test "x${with_newlib}" = "xyes"; then
 397     AC_LIBOBJ([asprintf])
 398     AC_LIBOBJ([basename])
 399     AC_LIBOBJ([insque])
 400     AC_LIBOBJ([random])
 401     AC_LIBOBJ([strdup])
 402     AC_LIBOBJ([vasprintf])
 403
 404     for f in $funcs; do
 405       case "$f" in
 406         asprintf | basename | insque | random | strdup | vasprintf)
 407           ;;
 408         *)
 409           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 410           AC_DEFINE_UNQUOTED($n)
 411           ;;
 412       esac
 413     done
 414
 415     # newlib doesnt provide any of the variables in $vars, so we
 416     # dont have to check them here.
 417
 418     # Of the functions in $checkfuncs, newlib only has strerror.
 419     AC_DEFINE(HAVE_STRERROR)
 420
 421     setobjs=yes
 422
 423   fi
 424
 425   # If we are being configured for Mingw, we know which functions
 426   # Mingw provides and which ones we will be expected to provide.
 427
 428   case "${host}" in
 429   *-*-mingw*)
 430     AC_LIBOBJ([asprintf])
 431     AC_LIBOBJ([basename])
 432     AC_LIBOBJ([bcmp])
 433     AC_LIBOBJ([bcopy])
 434     AC_LIBOBJ([bzero])
 435     AC_LIBOBJ([clock])
 436     AC_LIBOBJ([ffs])
 437     AC_LIBOBJ([getpagesize])
 438     AC_LIBOBJ([index])
 439     AC_LIBOBJ([insque])
 440     AC_LIBOBJ([mempcpy])
 441     AC_LIBOBJ([mkstemps])
 442     AC_LIBOBJ([random])
 443     AC_LIBOBJ([rindex])
 444     AC_LIBOBJ([sigsetmask])
 445     AC_LIBOBJ([stpcpy])
 446     AC_LIBOBJ([stpncpy])
 447     AC_LIBOBJ([strndup])
 448     AC_LIBOBJ([strverscmp])
 449     AC_LIBOBJ([vasprintf])
 450     AC_LIBOBJ([waitpid])
 451
 452     for f in $funcs; do
 453       case "$f" in
 454         asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strverscmp | vasprintf | waitpid)
 455           ;;
 456         *)
 457           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 458           AC_DEFINE_UNQUOTED($n)
 459           ;;
 460       esac
 461     done
 462
 463     # Mingw doesnt provide any of the variables in $vars, so we
 464     # dont have to check them here.
 465
 466     # Of the functions in $checkfuncs, Mingw only has strerror.
 467     AC_DEFINE(HAVE_STRERROR)
 468
 469     setobjs=yes
 470     ;;
 471
 472   *-*-msdosdjgpp)
 473     AC_LIBOBJ([vasprintf])
 474     AC_LIBOBJ([vsnprintf])
 475     AC_LIBOBJ([snprintf])
 476     AC_LIBOBJ([asprintf])
 477
 478     for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \
 479              getcwd getpagesize getrusage gettimeofday \
 480              index insque memchr memcmp memcpy memmove memset psignal \
 481              putenv random rename rindex sbrk setenv stpcpy strcasecmp \
 482              strchr strdup strerror strncasecmp strrchr strstr strtod \
 483              strtol strtoul sysconf times tmpnam vfprintf vprintf \
 484              vsprintf waitpid
 485     do
 486       n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 487       AC_DEFINE_UNQUOTED($n)
 488     done
 489
 490
 491     setobjs=yes
 492     ;;
 493
 494   esac
 495
 496   # We may wish to install the target headers somewhere.
 497   AC_ARG_ENABLE(install-libiberty,
 498   [  --enable-install-libiberty       Install headers for end users],
 499   enable_install_libiberty=$enableval,
 500   enable_install_libiberty=no)dnl
 501
 502   # Option parsed, now set things appropriately.
 503   case x"$enable_install_libiberty" in
 504     xyes|x)
 505       target_header_dir=libiberty
 506       ;;
 507     xno)
 508       target_header_dir=
 509       ;;
 510     *)
 511       # This could be sanity-checked in various ways...
 512       target_header_dir="${enable_install_libiberty}"
 513       ;;
 514   esac
 515
 516
 517 else
 518
 519    # Not a target library, so we set things up to run the test suite.
 520    CHECK=really-check
 521
 522 fi
 523
 524 AC_SUBST(CHECK)
 525 AC_SUBST(target_header_dir)
 526
 527 case "${host}" in
 528   *-*-cygwin* | *-*-mingw*)
 529     AC_DEFINE(HAVE_SYS_ERRLIST)
 530     AC_DEFINE(HAVE_SYS_NERR)
 531     ;;
 532 esac
 533
 534 if test -z "${setobjs}"; then
 535   case "${host}" in
 536
 537   *-*-vxworks*)
 538     # Handle VxWorks configuration specially, since on VxWorks the
 539     # libraries are actually on the target board, not in the file
 540     # system.
 541     AC_LIBOBJ([basename])
 542     AC_LIBOBJ([getpagesize])
 543     AC_LIBOBJ([insque])
 544     AC_LIBOBJ([random])
 545     AC_LIBOBJ([strcasecmp])
 546     AC_LIBOBJ([strncasecmp])
 547     AC_LIBOBJ([strdup])
 548     AC_LIBOBJ([vfork])
 549     AC_LIBOBJ([waitpid])
 550     AC_LIBOBJ([vasprintf])
 551     for f in $funcs; do
 552       case "$f" in
 553         basename | getpagesize | insque | random | strcasecmp)
 554           ;;
 555         strncasecmp | strdup | vfork | waitpid | vasprintf)
 556           ;;
 557         *)
 558           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 559           AC_DEFINE_UNQUOTED($n)
 560           ;;
 561       esac
 562     done
 563
 564     # VxWorks doesn't provide any of the variables in $vars, so we
 565     # don't have to check them here.
 566
 567     # Of the functions in $checkfuncs, VxWorks only has strerror.
 568     AC_DEFINE(HAVE_STRERROR)
 569
 570     setobjs=yes
 571     ;;
 572
 573   esac
 574 fi
 575
 576 if test -z "${setobjs}"; then
 577
 578   case "${host}" in
 579
 580   *-*-mingw32*)
 581     # Under mingw32, sys_nerr and sys_errlist exist, but they are
 582     # macros, so the test below won't find them.
 583     libiberty_cv_var_sys_nerr=yes
 584     libiberty_cv_var_sys_errlist=yes
 585     ;;
 586
 587   *-*-msdosdjgpp*)
 588     # vfork and fork are stubs.
 589     ac_cv_func_vfork_works=no
 590     ;;
 591
 592   *-*-uwin*)
 593     # Under some versions of uwin, vfork is notoriously buggy and the test
 594     # can hang configure; on other versions, vfork exists just as a stub.
 595     # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 596     ac_cv_func_vfork_works=no
 597     # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
 598     # macros (actually, these are imported from a DLL, but the end effect
 599     # is the same), so the test below won't find them.
 600     libiberty_cv_var_sys_nerr=yes
 601     libiberty_cv_var_sys_errlist=yes
 602     ;;
 603
 604   *-*-*vms*)
 605     # Under VMS, vfork works very different than on Unix. The standard test
 606     # won't work, and it isn't easily adaptable. It makes more sense to
 607     # just force it.
 608     ac_cv_func_vfork_works=yes
 609     ;;
 610
 611   esac
 612
 613   # We haven't set the list of objects yet.  Use the standard autoconf
 614   # tests.  This will only work if the compiler works.
 615   AC_ISC_POSIX
 616   AC_REPLACE_FUNCS($funcs)
 617   libiberty_AC_FUNC_C_ALLOCA
 618   AC_FUNC_FORK
 619   if test $ac_cv_func_vfork_works = no; then
 620     AC_LIBOBJ([vfork])
 621   fi
 622   # We only need _doprnt if we might use it to implement v*printf.
 623   if test $ac_cv_func_vprintf != yes \
 624      || test $ac_cv_func_vfprintf != yes \
 625      || test $ac_cv_func_vsprintf != yes; then
 626     AC_REPLACE_FUNCS(_doprnt)
 627   else
 628     AC_CHECK_FUNCS(_doprnt)
 629   fi
 630
 631   for v in $vars; do
 632     AC_MSG_CHECKING([for $v])
 633     AC_CACHE_VAL(libiberty_cv_var_$v,
 634       [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
 635                       [eval "libiberty_cv_var_$v=yes"],
 636                       [eval "libiberty_cv_var_$v=no"])])
 637     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
 638       AC_MSG_RESULT(yes)
 639       n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 640       AC_DEFINE_UNQUOTED($n)
 641     else
 642       AC_MSG_RESULT(no)
 643     fi
 644   done
 645
 646   # special check for _system_configuration because AIX <4.3.2 do not
 647   # contain the `physmem' member.
 648   AC_MSG_CHECKING([for external symbol _system_configuration])
 649   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
 650                         [[double x = _system_configuration.physmem;]])],
 651     [AC_MSG_RESULT([yes])
 652     AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
 653               [Define if you have the _system_configuration variable.])],
 654     [AC_MSG_RESULT([no])])
 655
 656   AC_CHECK_FUNCS($checkfuncs)
 657   AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
 658   AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc, sbrk])
 659   AC_CHECK_DECLS([strverscmp])
 660   libiberty_NEED_DECLARATION(canonicalize_file_name)
 661 fi
 662
 663 # Figure out which version of pexecute to use.
 664 case "${host}" in
 665      *-*-mingw* | *-*-winnt*)   pexecute=./pex-win32.o  ;;
 666      *-*-msdosdjgpp*)           pexecute=./pex-djgpp.o  ;;
 667      *-*-msdos*)                pexecute=./pex-msdos.o  ;;
 668      *)                         pexecute=./pex-unix.o   ;;
 669 esac
 670 AC_SUBST(pexecute)
 671
 672 libiberty_AC_FUNC_STRNCMP
 673
 674 # Install a library built with a cross compiler in $(tooldir) rather
 675 # than $(libdir).
 676 if test -z "${with_cross_host}"; then
 677   INSTALL_DEST=libdir
 678 else
 679   INSTALL_DEST=tooldir
 680 fi
 681 AC_SUBST(INSTALL_DEST)
 682
 683 m4_pattern_allow(LIBOBJS)
 684 L=""
 685 for l in x $LIBOBJS; do
 686   case $l in
 687     x) ;;
 688     *) L="$L ./$l" ;;
 689   esac
 690 done
 691 LIBOBJS="$L"
 692
 693 dnl Required by html and install-html
 694 AC_SUBST(datarootdir)
 695 AC_SUBST(docdir)
 696 AC_SUBST(htmldir)
 697
 698 # We need multilib support, but only if configuring for the target.
 699 AC_CONFIG_FILES([Makefile testsuite/Makefile])
 700 AC_CONFIG_COMMANDS([default],
 701   [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
 702 if test -n "$CONFIG_FILES"; then
 703   if test -n "${with_target_subdir}"; then
 704     # FIXME: We shouldn't need to set ac_file
 705     ac_file=Makefile
 706     LD="${ORIGINAL_LD_FOR_MULTILIBS}"
 707     . ${libiberty_topdir}/config-ml.in
 708   fi
 709 fi]],
 710 [[srcdir=${srcdir}
 711 host=${host}
 712 target=${target}
 713 with_target_subdir=${with_target_subdir}
 714 with_multisubdir=${with_multisubdir}
 715 ac_configure_args="--enable-multilib ${ac_configure_args}"
 716 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 717 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
 718 libiberty_topdir=${libiberty_topdir}
 719 ]])
 720 AC_OUTPUT