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_PROG_CPP_WERROR
 134
 135 # Warn C++ incompatibilities if supported.
 136 AC_CACHE_CHECK(
 137   [whether ${CC} accepts -Wc++-compat],
 138   [ac_cv_prog_cc_w_cxx_compat],
 139   [save_CFLAGS="$CFLAGS"
 140   CFLAGS="-Wc++-compat"
 141   AC_COMPILE_IFELSE([AC_LANG_SOURCE([[]])],
 142                     [ac_cv_prog_cc_w_cxx_compat=yes],
 143                     [ac_cv_prog_cc_w_cxx_compat=no])
 144   CFLAGS="$save_CFLAGS"
 145   ])
 146
 147
 148 if test x$GCC = xyes; then
 149   ac_libiberty_warn_cflags='-W -Wall -pedantic -Wwrite-strings -Wstrict-prototypes'
 150 fi
 151 if test $ac_cv_prog_cc_w_cxx_compat = yes ; then
 152   ac_libiberty_warn_cflags="${ac_libiberty_warn_cflags} -Wc++-compat"
 153 fi
 154 AC_SUBST(ac_libiberty_warn_cflags)
 155
 156 AC_PROG_CC_C_O
 157 # autoconf is lame and doesn't give us any substitution variable for this.
 158 if eval "test \"`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`\" = no"; then
 159   NO_MINUS_C_MINUS_O=yes
 160 else
 161   OUTPUT_OPTION='-o $@'
 162 fi
 163 AC_SUBST(NO_MINUS_C_MINUS_O)
 164 AC_SUBST(OUTPUT_OPTION)
 165
 166 AC_C_CONST
 167 AC_C_INLINE
 168 AC_C_BIGENDIAN
 169
 170 dnl When we start using libtool:
 171 dnl Default to a non shared library.  This may be overridden by the
 172 dnl configure option --enable-shared.
 173 dnl AM_DISABLE_SHARED
 174
 175 dnl When we start using libtool:
 176 dnl AM_PROG_LIBTOOL
 177
 178 dnl When we start using automake:
 179 dnl AM_CONFIG_HEADER(config.h:config.in)
 180 AC_CONFIG_HEADER(config.h:config.in)
 181
 182 dnl When we start using automake:
 183 dnl AM_MAINTAINER_MODE
 184 dnl AC_EXEEXT
 185
 186 dnl When we start using automake:
 187 dnl AM_PROG_INSTALL
 188 AC_PROG_INSTALL
 189
 190 # Don't build the shared library for build.
 191 if [[ -n "${with_build_subdir}" ]]; then
 192   enable_shared=no
 193 fi
 194
 195 frag=
 196 case "${host}" in
 197   rs6000-ibm-aix3.1 | rs6000-ibm-aix)
 198                         frag=mh-aix ;;
 199   *-*-cxux7*)           frag=mh-cxux7 ;;
 200   *-*-freebsd2.1.*)     frag=mh-fbsd21 ;;
 201   *-*-freebsd2.2.[[012]])       frag=mh-fbsd21 ;;
 202   i370-*-opened*)       frag=mh-openedition ;;
 203   i[[34567]]86-*-windows*)      frag=mh-windows ;;
 204 esac
 205
 206 if [[ -n "${frag}" ]]; then
 207   frags=${libiberty_topdir}/libiberty/config/$frag
 208 else
 209   frags=
 210 fi
 211
 212 # If they didn't specify --enable-shared, don't generate shared libs.
 213 case "${enable_shared}" in
 214   yes) shared=yes ;;
 215   no) shared=no ;;
 216   "") shared=no ;;
 217   *) shared=yes ;;
 218 esac
 219 if [[ "${shared}" = "yes" ]]; then
 220   frag=
 221   case "${host}" in
 222     *-*-cygwin*)        ;;
 223     alpha*-*-linux*)    frag=mh-elfalphapic ;;
 224     arm*-*-*)           frag=mh-armpic ;;
 225     hppa*-*-*)          frag=mh-papic ;;
 226     i[[34567]]86-*-* | x86_64-*-*)
 227                         frag=mh-x86pic ;;
 228     powerpc*-*-aix*)    ;;
 229     powerpc*-*-*)       frag=mh-ppcpic ;;
 230     sparc*-*-*)         frag=mh-sparcpic ;;
 231     s390*-*-*)          frag=mh-s390pic ;;
 232     *)                  frag=mh-${host_cpu}pic ;;
 233   esac
 234   if [[ -n "${frag}" ]]; then
 235     frags="${frags} ${libiberty_topdir}/config/${frag}"
 236   fi
 237 fi
 238
 239 echo "# Warning: this fragment is automatically generated" > temp-frag
 240
 241 for frag in ${frags}; do
 242   if [[ -f ${frag} ]]; then
 243     echo "Appending ${frag} to xhost-mkfrag"
 244     echo "# Following fragment copied from ${frag}" >> temp-frag
 245     cat ${frag} >> temp-frag
 246   fi
 247 done
 248
 249 # record if we want to build shared libs.
 250 if [[ "${shared}" = "yes" ]]; then
 251   echo enable_shared = yes >> temp-frag
 252 else
 253   echo enable_shared = no >> temp-frag
 254 fi
 255
 256 frag=xhost-mkfrag
 257 ${CONFIG_SHELL-/bin/sh} ${libiberty_topdir}/move-if-change temp-frag xhost-mkfrag
 258
 259 host_makefile_frag=${frag}
 260 AC_SUBST_FILE(host_makefile_frag)
 261
 262 # It's OK to check for header files.  Although the compiler may not be
 263 # able to link anything, it had better be able to at least compile
 264 # something.
 265 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)
 266 AC_HEADER_SYS_WAIT
 267 AC_HEADER_TIME
 268
 269 libiberty_AC_DECLARE_ERRNO
 270
 271 # Determine the size of an int for struct fibnode.
 272 AC_CHECK_SIZEOF([int])
 273
 274 AC_CHECK_TYPE(uintptr_t, unsigned long)
 275
 276 # Look for a 64-bit type.
 277 AC_MSG_CHECKING([for a 64-bit type])
 278 AC_CACHE_VAL(liberty_cv_uint64,
 279 [AC_TRY_COMPILE(
 280 [#ifdef HAVE_STDINT_H
 281 #include <stdint.h>
 282 #endif],
 283 [extern uint64_t foo;],
 284 liberty_cv_uint64=uint64_t,
 285 [AC_TRY_COMPILE(
 286 [#ifdef HAVE_LIMITS_H
 287 #include <limits.h>
 288 #endif
 289 #ifndef CHAR_BIT
 290 #define CHAR_BIT 8
 291 #endif],
 292 [extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
 293 liberty_cv_uint64="unsigned long",
 294 [AC_TRY_COMPILE(
 295 [#ifdef HAVE_LIMITS_H
 296 #include <limits.h>
 297 #endif
 298 #ifndef CHAR_BIT
 299 #define CHAR_BIT 8
 300 #endif],
 301 [extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
 302 liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
 303 AC_MSG_RESULT($liberty_cv_uint64)
 304 if test "$liberty_cv_uint64" != none; then
 305   AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
 306                      [Define to an unsigned 64-bit type available in the compiler.])
 307 fi
 308
 309 # Given the above check, we always have uintptr_t or a fallback
 310 # definition.  So define HAVE_UINTPTR_T in case any imported code
 311 # relies on it.
 312 AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
 313
 314 AC_TYPE_PID_T
 315
 316 # This is the list of functions which libiberty will provide if they
 317 # are not available on the host.
 318
 319 funcs="asprintf"
 320 funcs="$funcs atexit"
 321 funcs="$funcs basename"
 322 funcs="$funcs bcmp"
 323 funcs="$funcs bcopy"
 324 funcs="$funcs bsearch"
 325 funcs="$funcs bzero"
 326 funcs="$funcs calloc"
 327 funcs="$funcs clock"
 328 funcs="$funcs ffs"
 329 funcs="$funcs getcwd"
 330 funcs="$funcs getpagesize"
 331 funcs="$funcs gettimeofday"
 332 funcs="$funcs index"
 333 funcs="$funcs insque"
 334 funcs="$funcs memchr"
 335 funcs="$funcs memcmp"
 336 funcs="$funcs memcpy"
 337 funcs="$funcs memmove"
 338 funcs="$funcs mempcpy"
 339 funcs="$funcs memset"
 340 funcs="$funcs mkstemps"
 341 funcs="$funcs putenv"
 342 funcs="$funcs random"
 343 funcs="$funcs rename"
 344 funcs="$funcs rindex"
 345 funcs="$funcs setenv"
 346 funcs="$funcs snprintf"
 347 funcs="$funcs sigsetmask"
 348 funcs="$funcs stpcpy"
 349 funcs="$funcs stpncpy"
 350 funcs="$funcs strcasecmp"
 351 funcs="$funcs strchr"
 352 funcs="$funcs strdup"
 353 funcs="$funcs strncasecmp"
 354 funcs="$funcs strndup"
 355 funcs="$funcs strrchr"
 356 funcs="$funcs strstr"
 357 funcs="$funcs strtod"
 358 funcs="$funcs strtol"
 359 funcs="$funcs strtoul"
 360 funcs="$funcs strverscmp"
 361 funcs="$funcs tmpnam"
 362 funcs="$funcs vasprintf"
 363 funcs="$funcs vfprintf"
 364 funcs="$funcs vprintf"
 365 funcs="$funcs vsnprintf"
 366 funcs="$funcs vsprintf"
 367 funcs="$funcs waitpid"
 368
 369 # Also in the old function.def file: alloca, vfork, getopt.
 370
 371 vars="sys_errlist sys_nerr sys_siglist"
 372
 373 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 374 checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"
 375 checkfuncs="$checkfuncs getsysinfo table sysctl wait3 wait4 __fsetlocking"
 376
 377 # These are neither executed nor required, but they help keep
 378 # autoheader happy without adding a bunch of text to acconfig.h.
 379 if test "x" = "y"; then
 380   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock \
 381   getcwd getpagesize gettimeofday index insque mkstemps memchr memcmp memcpy \
 382   memmove mempcpy memset putenv random rename rindex sigsetmask \
 383   strcasecmp setenv stpcpy stpncpy strchr strdup strncasecmp strndup strrchr strstr \
 384   strtod strtol strtoul strverscmp tmpnam vasprintf vfprintf vprintf \
 385   vsprintf waitpid getrusage on_exit psignal strerror strsignal \
 386   sysconf times sbrk gettimeofday ffs snprintf vsnprintf \
 387   pstat_getstatic pstat_getdynamic sysmp getsysinfo table sysctl wait3 wait4 \
 388   realpath canonicalize_file_name __fsetlocking)
 389   AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
 390   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
 391   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
 392   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
 393 fi
 394
 395 # For each of these functions, if the host does not provide the
 396 # function we want to put FN.o in LIBOBJS, and if the host does
 397 # provide the function, we want to define HAVE_FN in config.h.
 398
 399 setobjs=
 400 CHECK=
 401 target_header_dir=
 402 if test -n "${with_target_subdir}"; then
 403
 404   # We are being configured as a target library.  AC_REPLACE_FUNCS
 405   # may not work correctly, because the compiler may not be able to
 406   # link executables.  Note that we may still be being configured
 407   # native.
 408
 409   # If we are being configured for newlib, we know which functions
 410   # newlib provide and which ones we will be expected to provide.
 411
 412   if test "x${with_newlib}" = "xyes"; then
 413     AC_LIBOBJ([asprintf])
 414     AC_LIBOBJ([basename])
 415     AC_LIBOBJ([insque])
 416     AC_LIBOBJ([random])
 417     AC_LIBOBJ([strdup])
 418     AC_LIBOBJ([vasprintf])
 419
 420     for f in $funcs; do
 421       case "$f" in
 422         asprintf | basename | insque | random | strdup | vasprintf)
 423           ;;
 424         *)
 425           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 426           AC_DEFINE_UNQUOTED($n)
 427           ;;
 428       esac
 429     done
 430
 431     # newlib doesnt provide any of the variables in $vars, so we
 432     # dont have to check them here.
 433
 434     # Of the functions in $checkfuncs, newlib only has strerror.
 435     AC_DEFINE(HAVE_STRERROR)
 436
 437     setobjs=yes
 438
 439   fi
 440
 441   # If we are being configured for Mingw, we know which functions
 442   # Mingw provides and which ones we will be expected to provide.
 443
 444   case "${host}" in
 445   *-*-mingw*)
 446     AC_LIBOBJ([asprintf])
 447     AC_LIBOBJ([basename])
 448     AC_LIBOBJ([bcmp])
 449     AC_LIBOBJ([bcopy])
 450     AC_LIBOBJ([bzero])
 451     AC_LIBOBJ([clock])
 452     AC_LIBOBJ([ffs])
 453     AC_LIBOBJ([getpagesize])
 454     AC_LIBOBJ([index])
 455     AC_LIBOBJ([insque])
 456     AC_LIBOBJ([mempcpy])
 457     AC_LIBOBJ([mkstemps])
 458     AC_LIBOBJ([random])
 459     AC_LIBOBJ([rindex])
 460     AC_LIBOBJ([sigsetmask])
 461     AC_LIBOBJ([stpcpy])
 462     AC_LIBOBJ([stpncpy])
 463     AC_LIBOBJ([strndup])
 464     AC_LIBOBJ([strverscmp])
 465     AC_LIBOBJ([vasprintf])
 466     AC_LIBOBJ([waitpid])
 467
 468     for f in $funcs; do
 469       case "$f" in
 470         asprintf | basename | bcmp | bcopy | bzero | clock | ffs | getpagesize | index | insque | mempcpy | mkstemps | random | rindex | sigsetmask | stpcpy | stpncpy | strdup | strndup | strverscmp | vasprintf | waitpid)
 471           ;;
 472         *)
 473           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 474           AC_DEFINE_UNQUOTED($n)
 475           ;;
 476       esac
 477     done
 478
 479     # Mingw doesnt provide any of the variables in $vars, so we
 480     # dont have to check them here.
 481
 482     # Of the functions in $checkfuncs, Mingw only has strerror.
 483     AC_DEFINE(HAVE_STRERROR)
 484
 485     setobjs=yes
 486     ;;
 487
 488   esac
 489
 490   # We may wish to install the target headers somewhere.
 491   AC_ARG_ENABLE(install-libiberty,
 492   [  --enable-install-libiberty       Install headers for end users],
 493   enable_install_libiberty=$enableval,
 494   enable_install_libiberty=no)dnl
 495
 496   # Option parsed, now set things appropriately.
 497   case x"$enable_install_libiberty" in
 498     xyes|x)
 499       target_header_dir=libiberty
 500       ;;
 501     xno)
 502       target_header_dir=
 503       ;;
 504     *)
 505       # This could be sanity-checked in various ways...
 506       target_header_dir="${enable_install_libiberty}"
 507       ;;
 508   esac
 509
 510
 511 else
 512
 513    # Not a target library, so we set things up to run the test suite.
 514    CHECK=really-check
 515
 516 fi
 517
 518 AC_SUBST(CHECK)
 519 AC_SUBST(target_header_dir)
 520
 521 case "${host}" in
 522   *-*-cygwin* | *-*-mingw*)
 523     AC_DEFINE(HAVE_SYS_ERRLIST)
 524     AC_DEFINE(HAVE_SYS_NERR)
 525     ;;
 526 esac
 527
 528 if test -z "${setobjs}"; then
 529   case "${host}" in
 530
 531   *-*-vxworks*)
 532     # Handle VxWorks configuration specially, since on VxWorks the
 533     # libraries are actually on the target board, not in the file
 534     # system.
 535     AC_LIBOBJ([basename])
 536     AC_LIBOBJ([getpagesize])
 537     AC_LIBOBJ([insque])
 538     AC_LIBOBJ([random])
 539     AC_LIBOBJ([strcasecmp])
 540     AC_LIBOBJ([strncasecmp])
 541     AC_LIBOBJ([strdup])
 542     AC_LIBOBJ([vfork])
 543     AC_LIBOBJ([waitpid])
 544     AC_LIBOBJ([vasprintf])
 545     for f in $funcs; do
 546       case "$f" in
 547         basename | getpagesize | insque | random | strcasecmp)
 548           ;;
 549         strncasecmp | strdup | vfork | waitpid | vasprintf)
 550           ;;
 551         *)
 552           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 553           AC_DEFINE_UNQUOTED($n)
 554           ;;
 555       esac
 556     done
 557
 558     # VxWorks doesn't provide any of the variables in $vars, so we
 559     # don't have to check them here.
 560
 561     # Of the functions in $checkfuncs, VxWorks only has strerror.
 562     AC_DEFINE(HAVE_STRERROR)
 563
 564     setobjs=yes
 565     ;;
 566
 567   *-*-msdosdjgpp)
 568     for f in atexit basename bcmp bcopy bsearch bzero calloc clock ffs \
 569              getcwd getpagesize getrusage gettimeofday gettimeofday \
 570              index insque memchr memcmp memcpy memmove memset psignal \
 571              putenv random rename rindex sbrk setenv stpcpy strcasecmp \
 572              strchr strdup strerror strncasecmp strrchr strstr strtod \
 573              strtol strtoul sysconf times tmpnam vfprintf vprintf \
 574              vsprintf waitpid
 575     do
 576       n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 577       AC_DEFINE_UNQUOTED($n)
 578     done
 579
 580
 581     setobjs=yes
 582     ;;
 583
 584   esac
 585 fi
 586
 587 if test -z "${setobjs}"; then
 588
 589   case "${host}" in
 590
 591   *-*-cygwin*)
 592     # The Cygwin library actually uses a couple of files from
 593     # libiberty when it is built.  If we are building a native
 594     # Cygwin, and we run the tests, we will appear to have these
 595     # files.  However, when we go on to build winsup, we will wind up
 596     # with a library which does not have the files, since they should
 597     # have come from libiberty.
 598
 599     # We handle this by removing the functions the winsup library
 600     # provides from our shell variables, so that they appear to be
 601     # missing.
 602
 603     # DJ - only if we're *building* cygwin, not just building *with* cygwin
 604
 605     if test -n "${with_target_subdir}"
 606     then
 607       funcs="`echo $funcs | sed -e 's/random//'`"
 608       AC_LIBOBJ([random])
 609       vars="`echo $vars | sed -e 's/sys_siglist//'`"
 610       checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
 611     fi
 612     ;;
 613
 614   *-*-mingw32*)
 615     # Under mingw32, sys_nerr and sys_errlist exist, but they are
 616     # macros, so the test below won't find them.
 617     libiberty_cv_var_sys_nerr=yes
 618     libiberty_cv_var_sys_errlist=yes
 619     ;;
 620
 621   *-*-msdosdjgpp*)
 622     # vfork and fork are stubs.
 623     ac_cv_func_vfork_works=no
 624     ;;
 625
 626   *-*-uwin*)
 627     # Under some versions of uwin, vfork is notoriously buggy and the test
 628     # can hang configure; on other versions, vfork exists just as a stub.
 629     # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 630     ac_cv_func_vfork_works=no
 631     # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
 632     # macros (actually, these are imported from a DLL, but the end effect
 633     # is the same), so the test below won't find them.
 634     libiberty_cv_var_sys_nerr=yes
 635     libiberty_cv_var_sys_errlist=yes
 636     ;;
 637
 638   *-*-*vms*)
 639     # Under VMS, vfork works very different than on Unix. The standard test
 640     # won't work, and it isn't easily adaptable. It makes more sense to
 641     # just force it.
 642     ac_cv_func_vfork_works=yes
 643     ;;
 644
 645   esac
 646
 647   # We haven't set the list of objects yet.  Use the standard autoconf
 648   # tests.  This will only work if the compiler works.
 649   AC_ISC_POSIX
 650   AC_REPLACE_FUNCS($funcs)
 651   libiberty_AC_FUNC_C_ALLOCA
 652   AC_FUNC_FORK
 653   if test $ac_cv_func_vfork_works = no; then
 654     AC_LIBOBJ([vfork])
 655   fi
 656   # We only need _doprnt if we might use it to implement v*printf.
 657   if test $ac_cv_func_vprintf != yes \
 658      || test $ac_cv_func_vfprintf != yes \
 659      || test $ac_cv_func_vsprintf != yes; then
 660     AC_REPLACE_FUNCS(_doprnt)
 661   else
 662     AC_CHECK_FUNCS(_doprnt)
 663   fi
 664
 665   for v in $vars; do
 666     AC_MSG_CHECKING([for $v])
 667     AC_CACHE_VAL(libiberty_cv_var_$v,
 668       [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
 669                       [eval "libiberty_cv_var_$v=yes"],
 670                       [eval "libiberty_cv_var_$v=no"])])
 671     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
 672       AC_MSG_RESULT(yes)
 673       n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 674       AC_DEFINE_UNQUOTED($n)
 675     else
 676       AC_MSG_RESULT(no)
 677     fi
 678   done
 679
 680   # special check for _system_configuration because AIX <4.3.2 do not
 681   # contain the `physmem' member.
 682   AC_MSG_CHECKING([for external symbol _system_configuration])
 683   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
 684                         [[double x = _system_configuration.physmem;]])],
 685     [AC_MSG_RESULT([yes])
 686     AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
 687               [Define if you have the _system_configuration variable.])],
 688     [AC_MSG_RESULT([no])])
 689
 690   AC_CHECK_FUNCS($checkfuncs)
 691   AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf])
 692   AC_CHECK_DECLS([calloc, getenv, getopt, malloc, realloc, sbrk])
 693   AC_CHECK_DECLS([strverscmp])
 694   libiberty_NEED_DECLARATION(canonicalize_file_name)
 695 fi
 696
 697 # Figure out which version of pexecute to use.
 698 case "${host}" in
 699      *-*-mingw* | *-*-winnt*)   pexecute=./pex-win32.o  ;;
 700      *-*-msdosdjgpp*)           pexecute=./pex-djgpp.o  ;;
 701      *-*-msdos*)                pexecute=./pex-msdos.o  ;;
 702      *)                         pexecute=./pex-unix.o   ;;
 703 esac
 704 AC_SUBST(pexecute)
 705
 706 libiberty_AC_FUNC_STRNCMP
 707
 708 # Install a library built with a cross compiler in $(tooldir) rather
 709 # than $(libdir).
 710 if test -z "${with_cross_host}"; then
 711   INSTALL_DEST=libdir
 712 else
 713   INSTALL_DEST=tooldir
 714 fi
 715 AC_SUBST(INSTALL_DEST)
 716
 717 m4_pattern_allow(LIBOBJS)
 718 L=""
 719 for l in x $LIBOBJS; do
 720   case $l in
 721     x) ;;
 722     *) L="$L ./$l" ;;
 723   esac
 724 done
 725 LIBOBJS="$L"
 726
 727 dnl Required by html and install-html
 728 AC_SUBST(datarootdir)
 729 AC_SUBST(docdir)
 730 AC_SUBST(htmldir)
 731
 732 # We need multilib support, but only if configuring for the target.
 733 AC_CONFIG_FILES([Makefile testsuite/Makefile])
 734 AC_CONFIG_COMMANDS([default],
 735   [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
 736 if test -n "$CONFIG_FILES"; then
 737   if test -n "${with_target_subdir}"; then
 738     # FIXME: We shouldn't need to set ac_file
 739     ac_file=Makefile
 740     LD="${ORIGINAL_LD_FOR_MULTILIBS}"
 741     . ${libiberty_topdir}/config-ml.in
 742   fi
 743 fi]],
 744 [[srcdir=${srcdir}
 745 host=${host}
 746 target=${target}
 747 with_target_subdir=${with_target_subdir}
 748 with_multisubdir=${with_multisubdir}
 749 ac_configure_args="--enable-multilib ${ac_configure_args}"
 750 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 751 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
 752 libiberty_topdir=${libiberty_topdir}
 753 ]])
 754 AC_OUTPUT