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 # FIXME: libiberty doesn't support --disable-static
   8 enable_static=yes
   9
  10 # This works around the fact that libtool configuration may change LD
  11 # for this particular configuration, but some shells, instead of
  12 # keeping the changes in LD private, export them just because LD is
  13 # exported.  We don't use libtool yet, but some day we might, so...
  14 ORIGINAL_LD_FOR_MULTILIBS=$LD
  15
  16 dnl We use these options to decide which functions to include.
  17 AC_ARG_WITH(target-subdir,
  18 [  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
  19 AC_ARG_WITH(build-subdir,
  20 [  --with-build-subdir=SUBDIR       Configuring in a subdirectory for build])
  21 AC_ARG_WITH(cross-host,
  22 [  --with-cross-host=HOST           Configuring with a cross compiler])
  23 AC_ARG_WITH(newlib,
  24 [  --with-newlib                    Configuring with newlib])
  25
  26 if test "${srcdir}" = "."; then
  27   if test -n "${with_build_subdir}"; then
  28     libiberty_topdir="${srcdir}/../.."
  29     with_target_subdir=
  30   elif test -z "${with_target_subdir}"; then
  31     libiberty_topdir="${srcdir}/.."
  32   else
  33     if test "${with_target_subdir}" != "."; then
  34       libiberty_topdir="${srcdir}/${with_multisrctop}../.."
  35     else
  36       libiberty_topdir="${srcdir}/${with_multisrctop}.."
  37     fi
  38   fi
  39 else
  40   libiberty_topdir="${srcdir}/.."
  41 fi
  42 AC_SUBST(libiberty_topdir)
  43 AC_CONFIG_AUX_DIR($libiberty_topdir)
  44
  45 dnl Very limited version of automake's enable-maintainer-mode
  46
  47 AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
  48   dnl maintainer-mode is disabled by default
  49   AC_ARG_ENABLE(maintainer-mode,
  50 [  --enable-maintainer-mode
  51                           enable make rules and dependencies not useful
  52                           (and sometimes confusing) to the casual installer],
  53       maintainer_mode=$enableval,
  54       maintainer_mode=no)
  55
  56 AC_MSG_RESULT($maintainer_mode)
  57
  58 if test "$maintainer_mode" = "yes"; then
  59   MAINT=''
  60   NOTMAINT='#'
  61 else
  62   MAINT='#'
  63   NOTMAINT=''
  64 fi
  65 AC_SUBST(MAINT)dnl
  66 AC_SUBST(NOTMAINT)dnl
  67
  68 # Do we have a single-tree copy of texinfo?  Even if we do, we can't
  69 # rely on it - libiberty is built before texinfo.
  70 AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
  71 if test "x$MAKEINFO" = "x"; then
  72     MAKEINFO="@echo makeinfo missing; true"
  73     BUILD_INFO=
  74 else
  75     BUILD_INFO=info
  76     case "$MAKEINFO" in
  77       */missing\ makeinfo*)
  78         BUILD_INFO=
  79         AC_MSG_WARN([
  80 *** Makeinfo is missing. Info documentation will not be built.])
  81         ;;
  82       *)
  83         case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
  84           x*\ [[1-3]].* )
  85             MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required; true"
  86             BUILD_INFO=
  87             AC_MSG_WARN([
  88 *** Makeinfo is too old. Info documentation will not be built.])
  89           ;;
  90         esac
  91         ;;
  92     esac
  93 fi
  94 AC_SUBST(MAKEINFO)
  95 AC_SUBST(BUILD_INFO)
  96
  97 AC_CHECK_PROG(PERL, perl, perl, )
  98 if test x"$PERL" = x""; then
  99   HAVE_PERL='#'
 100 else
 101   HAVE_PERL=''
 102 fi
 103 AC_SUBST(HAVE_PERL)
 104
 105 AC_CANONICAL_HOST
 106
 107 dnl When we start using automake:
 108 dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
 109
 110 dnl These must be called before AM_PROG_LIBTOOL, because it may want
 111 dnl to call AC_CHECK_PROG.
 112 AC_CHECK_TOOL(AR, ar)
 113 AC_CHECK_TOOL(RANLIB, ranlib, :)
 114
 115 GCC_NO_EXECUTABLES
 116 AC_PROG_CC
 117 AC_PROG_CPP_WERROR
 118
 119 if test x$GCC = xyes; then
 120   ac_libiberty_warn_cflags='-W -Wall -Wtraditional -pedantic'
 121 fi
 122 AC_SUBST(ac_libiberty_warn_cflags)
 123
 124 AC_C_CONST
 125 AC_C_INLINE
 126 AC_C_BIGENDIAN_CROSS
 127
 128 dnl Default to a non shared library.  This may be overridden by the
 129 dnl configure option --enable-shared.
 130 AM_DISABLE_SHARED
 131
 132 AM_PROG_LIBTOOL
 133
 134 dnl When we start using automake:
 135 dnl AM_CONFIG_HEADER(config.h:config.in)
 136 AC_CONFIG_HEADER(config.h:config.in)
 137
 138 dnl When we start using automake:
 139 dnl AM_MAINTAINER_MODE
 140 dnl AC_EXEEXT
 141
 142 dnl When we start using automake:
 143 dnl AM_PROG_INSTALL
 144 AC_PROG_INSTALL
 145
 146 . ${srcdir}/config.table
 147 host_makefile_frag=${frag}
 148 AC_SUBST_FILE(host_makefile_frag)
 149
 150 # It's OK to check for header files.  Although the compiler may not be
 151 # able to link anything, it had better be able to at least compile
 152 # something.
 153 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)
 154 AC_HEADER_SYS_WAIT
 155 AC_HEADER_TIME
 156
 157 libiberty_AC_DECLARE_ERRNO
 158
 159 # Determine the size of an int for struct fibnode.
 160 AC_CHECK_SIZEOF([int])
 161
 162 AC_CHECK_TYPE(uintptr_t, unsigned long)
 163
 164 # Look for a 64-bit type.
 165 AC_MSG_CHECKING([for a 64-bit type])
 166 AC_CACHE_VAL(liberty_cv_uint64,
 167 [AC_TRY_COMPILE(
 168 [#ifdef HAVE_STDINT_H
 169 #include <stdint.h>
 170 #endif],
 171 [extern uint64_t foo;],
 172 liberty_cv_uint64=uint64_t,
 173 [AC_TRY_COMPILE(
 174 [#ifdef HAVE_LIMITS_H
 175 #include <limits.h>
 176 #endif
 177 #ifndef CHAR_BIT
 178 #define CHAR_BIT 8
 179 #endif],
 180 [extern char foo[sizeof(long) * CHAR_BIT >= 64 ? 1 : -1];],
 181 liberty_cv_uint64="unsigned long",
 182 [AC_TRY_COMPILE(
 183 [#ifdef HAVE_LIMITS_H
 184 #include <limits.h>
 185 #endif
 186 #ifndef CHAR_BIT
 187 #define CHAR_BIT 8
 188 #endif],
 189 [extern char foo[sizeof(long long) * CHAR_BIT >= 64 ? 1 : -1];],
 190 liberty_cv_uint64="unsigned long long", liberty_cv_uint64=none)])])])
 191 AC_MSG_RESULT($liberty_cv_uint64)
 192 if test "$liberty_cv_uint64" != none; then
 193   AC_DEFINE_UNQUOTED(UNSIGNED_64BIT_TYPE, $liberty_cv_uint64,
 194                      [Define to an unsigned 64-bit type available in the compiler.])
 195 fi
 196
 197 # Given the above check, we always have uintptr_t or a fallback
 198 # definition.  So define HAVE_UINTPTR_T in case any imported code
 199 # relies on it.
 200 AC_DEFINE(HAVE_UINTPTR_T, 1, [Define if you have the \`uintptr_t' type.])
 201
 202 AC_TYPE_PID_T
 203
 204 # This is the list of functions which libiberty will provide if they
 205 # are not available on the host.
 206
 207 funcs="asprintf"
 208 funcs="$funcs atexit"
 209 funcs="$funcs basename"
 210 funcs="$funcs bcmp"
 211 funcs="$funcs bcopy"
 212 funcs="$funcs bsearch"
 213 funcs="$funcs bzero"
 214 funcs="$funcs calloc"
 215 funcs="$funcs clock"
 216 funcs="$funcs ffs"
 217 funcs="$funcs getcwd"
 218 funcs="$funcs getpagesize"
 219 funcs="$funcs index"
 220 funcs="$funcs insque"
 221 funcs="$funcs memchr"
 222 funcs="$funcs memcmp"
 223 funcs="$funcs memcpy"
 224 funcs="$funcs memmove"
 225 funcs="$funcs mempcpy"
 226 funcs="$funcs memset"
 227 funcs="$funcs mkstemps"
 228 funcs="$funcs putenv"
 229 funcs="$funcs random"
 230 funcs="$funcs rename"
 231 funcs="$funcs rindex"
 232 funcs="$funcs setenv"
 233 funcs="$funcs snprintf"
 234 funcs="$funcs sigsetmask"
 235 funcs="$funcs stpcpy"
 236 funcs="$funcs stpncpy"
 237 funcs="$funcs strcasecmp"
 238 funcs="$funcs strchr"
 239 funcs="$funcs strdup"
 240 funcs="$funcs strncasecmp"
 241 funcs="$funcs strrchr"
 242 funcs="$funcs strstr"
 243 funcs="$funcs strtod"
 244 funcs="$funcs strtol"
 245 funcs="$funcs strtoul"
 246 funcs="$funcs tmpnam"
 247 funcs="$funcs vasprintf"
 248 funcs="$funcs vfprintf"
 249 funcs="$funcs vprintf"
 250 funcs="$funcs vsnprintf"
 251 funcs="$funcs vsprintf"
 252 funcs="$funcs waitpid"
 253
 254 # Also in the old function.def file: alloca, vfork, getopt.
 255
 256 vars="sys_errlist sys_nerr sys_siglist"
 257
 258 checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times sbrk gettimeofday"
 259 checkfuncs="$checkfuncs realpath canonicalize_file_name pstat_getstatic pstat_getdynamic sysmp"
 260 checkfuncs="$checkfuncs getsysinfo table sysctl"
 261
 262 # These are neither executed nor required, but they help keep
 263 # autoheader happy without adding a bunch of text to acconfig.h.
 264 if test "x" = "y"; then
 265   AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bsearch bzero calloc clock \
 266   getcwd getpagesize index insque mkstemps memchr memcmp memcpy \
 267   memmove mempcpy memset putenv random rename rindex sigsetmask \
 268   strcasecmp setenv stpcpy stpncpy strchr strdup strncasecmp strrchr strstr \
 269   strtod strtol strtoul tmpnam vasprintf vfprintf vprintf \
 270   vsprintf waitpid getrusage on_exit psignal strerror strsignal \
 271   sysconf times sbrk gettimeofday ffs snprintf vsnprintf \
 272   pstat_getstatic pstat_getdynamic sysmp getsysinfo table sysctl \
 273   realpath canonicalize_file_name)
 274   AC_DEFINE(HAVE_SYS_ERRLIST, 1, [Define if you have the sys_errlist variable.])
 275   AC_DEFINE(HAVE_SYS_NERR,    1, [Define if you have the sys_nerr variable.])
 276   AC_DEFINE(HAVE_SYS_SIGLIST, 1, [Define if you have the sys_siglist variable.])
 277 fi
 278
 279 # For each of these functions, if the host does not provide the
 280 # function we want to put FN.o in LIBOBJS, and if the host does
 281 # provide the function, we want to define HAVE_FN in config.h.
 282
 283 setobjs=
 284 CHECK=
 285 target_header_dir=
 286 if test -n "${with_target_subdir}"; then
 287
 288   # We are being configured as a target library.  AC_REPLACE_FUNCS
 289   # may not work correctly, because the compiler may not be able to
 290   # link executables.  Note that we may still be being configured
 291   # native.
 292
 293   # If we are being configured for newlib, we know which functions
 294   # newlib provide and which ones we will be expected to provide.
 295
 296   if test "x${with_newlib}" = "xyes"; then
 297     AC_LIBOBJ([asprintf])
 298     AC_LIBOBJ([basename])
 299     AC_LIBOBJ([insque])
 300     AC_LIBOBJ([random])
 301     AC_LIBOBJ([strdup])
 302     AC_LIBOBJ([vasprintf])
 303
 304     for f in $funcs; do
 305       case "$f" in
 306         asprintf | basename | insque | random | strdup | vasprintf)
 307           ;;
 308         *)
 309           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 310           AC_DEFINE_UNQUOTED($n)
 311           ;;
 312       esac
 313     done
 314
 315     # newlib doesnt provide any of the variables in $vars, so we
 316     # dont have to check them here.
 317
 318     # Of the functions in $checkfuncs, newlib only has strerror.
 319     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 320
 321     setobjs=yes
 322
 323   fi
 324
 325   # We may wish to install the target headers somewhere.
 326   AC_ARG_ENABLE(install-libiberty,
 327   [  --enable-install-libiberty       Install headers for end users],
 328   enable_install_libiberty=$enableval,
 329   enable_install_libiberty=no)dnl
 330
 331   # Option parsed, now set things appropriately.
 332   case x"$enable_install_libiberty" in
 333     xyes|x)
 334       target_header_dir=libiberty
 335       ;;
 336     xno)
 337       target_header_dir=
 338       ;;
 339     *)
 340       # This could be sanity-checked in various ways...
 341       target_header_dir="${enable_install_libiberty}"
 342       ;;
 343   esac
 344
 345
 346 else
 347
 348    # Not a target library, so we set things up to run the test suite.
 349    CHECK=check-cplus-dem
 350
 351 fi
 352
 353 AC_SUBST(CHECK)
 354 AC_SUBST(target_header_dir)
 355
 356 case "${host}" in
 357   *-*-cygwin* | *-*-mingw*)
 358     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_ERRLIST)
 359     AC_DEFINE_NOAUTOHEADER(HAVE_SYS_NERR)
 360     ;;
 361 esac
 362
 363 if test -z "${setobjs}"; then
 364   case "${host}" in
 365
 366   *-*-vxworks*)
 367     # Handle VxWorks configuration specially, since on VxWorks the
 368     # libraries are actually on the target board, not in the file
 369     # system.
 370     AC_LIBOBJ([basename])
 371     AC_LIBOBJ([getpagesize])
 372     AC_LIBOBJ([insque])
 373     AC_LIBOBJ([random])
 374     AC_LIBOBJ([strcasecmp])
 375     AC_LIBOBJ([strncasecmp])
 376     AC_LIBOBJ([strdup])
 377     AC_LIBOBJ([vfork])
 378     AC_LIBOBJ([waitpid])
 379     AC_LIBOBJ([vasprintf])
 380     for f in $funcs; do
 381       case "$f" in
 382         basename | getpagesize | insque | random | strcasecmp)
 383           ;;
 384         strncasecmp | strdup | vfork | waitpid | vasprintf)
 385           ;;
 386         *)
 387           n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 388           AC_DEFINE_UNQUOTED($n)
 389           ;;
 390       esac
 391     done
 392
 393     # VxWorks doesn't provide any of the variables in $vars, so we
 394     # don't have to check them here.
 395
 396     # Of the functions in $checkfuncs, VxWorks only has strerror.
 397     AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
 398
 399     setobjs=yes
 400     ;;
 401
 402   esac
 403 fi
 404
 405 if test -z "${setobjs}"; then
 406
 407   case "${host}" in
 408
 409   *-*-cygwin*)
 410     # The Cygwin library actually uses a couple of files from
 411     # libiberty when it is built.  If we are building a native
 412     # Cygwin, and we run the tests, we will appear to have these
 413     # files.  However, when we go on to build winsup, we will wind up
 414     # with a library which does not have the files, since they should
 415     # have come from libiberty.
 416
 417     # We handle this by removing the functions the winsup library
 418     # provides from our shell variables, so that they appear to be
 419     # missing.
 420
 421     # DJ - only if we're *building* cygwin, not just building *with* cygwin
 422
 423     if test -n "${with_target_subdir}"
 424     then
 425       funcs="`echo $funcs | sed -e 's/random//'`"
 426       AC_LIBOBJ([random])
 427       vars="`echo $vars | sed -e 's/sys_siglist//'`"
 428       checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
 429     fi
 430     ;;
 431
 432   *-*-mingw32*)
 433     # Under mingw32, sys_nerr and sys_errlist exist, but they are
 434     # macros, so the test below won't find them.
 435     libiberty_cv_var_sys_nerr=yes
 436     libiberty_cv_var_sys_errlist=yes
 437     ;;
 438
 439   *-*-uwin*)
 440     # Under some versions of uwin, vfork is notoriously buggy and the test
 441     # can hang configure; on other versions, vfork exists just as a stub.
 442     # FIXME: This should be removed once vfork in uwin's runtime is fixed.
 443     ac_cv_func_vfork_works=no
 444     # Under uwin 2.0+, sys_nerr and sys_errlist exist, but they are
 445     # macros (actually, these are imported from a DLL, but the end effect
 446     # is the same), so the test below won't find them.
 447     libiberty_cv_var_sys_nerr=yes
 448     libiberty_cv_var_sys_errlist=yes
 449     ;;
 450
 451   *-*-*vms*)
 452     # Under VMS, vfork works very different than on Unix. The standard test
 453     # won't work, and it isn't easily adaptable. It makes more sense to
 454     # just force it.
 455     ac_cv_func_vfork_works=yes
 456     ;;
 457
 458   esac
 459
 460   # We haven't set the list of objects yet.  Use the standard autoconf
 461   # tests.  This will only work if the compiler works.
 462   AC_ISC_POSIX
 463   AC_REPLACE_FUNCS($funcs)
 464   libiberty_AC_FUNC_C_ALLOCA
 465   AC_FUNC_FORK
 466   if test $ac_cv_func_vfork_works = no; then
 467     AC_LIBOBJ([vfork])
 468   fi
 469   # We only need _doprnt if we might use it to implement v*printf.
 470   if test $ac_cv_func_vprintf != yes \
 471      || test $ac_cv_func_vfprintf != yes \
 472      || test $ac_cv_func_vsprintf != yes; then
 473     AC_REPLACE_FUNCS(_doprnt)
 474   else
 475     AC_CHECK_FUNCS(_doprnt)
 476   fi
 477
 478   for v in $vars; do
 479     AC_MSG_CHECKING([for $v])
 480     AC_CACHE_VAL(libiberty_cv_var_$v,
 481       [AC_LINK_IFELSE([AC_LANG_PROGRAM([[int *p;]],[[extern int $v []; p = $v;]])],
 482                       [eval "libiberty_cv_var_$v=yes"],
 483                       [eval "libiberty_cv_var_$v=no"])])
 484     if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
 485       AC_MSG_RESULT(yes)
 486       n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
 487       AC_DEFINE_UNQUOTED($n)
 488     else
 489       AC_MSG_RESULT(no)
 490     fi
 491   done
 492
 493   # special check for _system_configuration because AIX <4.3.2 do not
 494   # contain the `physmem' member.
 495   AC_MSG_CHECKING([for external symbol _system_configuration])
 496   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/systemcfg.h>]],
 497                         [[double x = _system_configuration.physmem;]])],
 498     [AC_MSG_RESULT([yes])
 499     AC_DEFINE(HAVE__SYSTEM_CONFIGURATION, 1,
 500               [Define if you have the _system_configuration variable.])],
 501     [AC_MSG_RESULT([no])])
 502
 503   AC_CHECK_FUNCS($checkfuncs)
 504   libiberty_NEED_DECLARATION(canonicalize_file_name)
 505 fi
 506
 507 # Figure out which version of pexecute to use.
 508 case "${host}" in
 509      *-*-mingw* | *-*-winnt*)   pex=./pex-win32  ;;
 510      *-*-msdosdjgpp*)           pex=./pex-djgpp  ;;
 511      *-*-msdos*)                pex=./pex-msdos  ;;
 512      *-*-os2-emx*)              pex=./pex-os2    ;;
 513      *)                         pex=./pex-unix   ;;
 514 esac
 515 pexecute=${pex}.o
 516 ltpexecute=${pex}.lo
 517 AC_SUBST(pexecute)
 518 AC_SUBST(ltpexecute)
 519
 520 libiberty_AC_FUNC_STRNCMP
 521
 522 # Install a library built with a cross compiler in $(tooldir) rather
 523 # than $(libdir).
 524 if test -z "${with_cross_host}"; then
 525   INSTALL_DEST=libdir
 526 else
 527   INSTALL_DEST=tooldir
 528 fi
 529 AC_SUBST(INSTALL_DEST)
 530
 531 # Add `./' to avoid VPATH.
 532 m4_pattern_allow(LIBOBJS)
 533 L=""
 534 for l in x $LIBOBJS; do
 535   case $l in
 536     x) ;;
 537     *) L="$L ./$l" ;;
 538   esac
 539 done
 540 LIBOBJS="$L"
 541
 542 m4_pattern_allow(LTLIBOBJS)
 543 L=""
 544 for l in x $LTLIBOBJS; do
 545   case $l in
 546     x) ;;
 547     *) L="$L ./$l" ;;
 548   esac
 549 done
 550 LTLIBOBJS="$L"
 551
 552 dnl Delete it when we start creating shared library with libtool.
 553 AC_SUBST(enable_shared)
 554
 555 # We need multilib support, but only if configuring for the target.
 556 AC_CONFIG_FILES([Makefile testsuite/Makefile])
 557 AC_CONFIG_COMMANDS([default],
 558   [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
 559 if test -n "$CONFIG_FILES"; then
 560   if test -n "${with_target_subdir}"; then
 561     # FIXME: We shouldn't need to set ac_file
 562     ac_file=Makefile
 563     LD="${ORIGINAL_LD_FOR_MULTILIBS}"
 564     . ${libiberty_topdir}/config-ml.in
 565   fi
 566 fi]],
 567 [[srcdir=${srcdir}
 568 host=${host}
 569 target=${target}
 570 with_target_subdir=${with_target_subdir}
 571 with_multisubdir=${with_multisubdir}
 572 ac_configure_args="--enable-multilib ${ac_configure_args}"
 573 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
 574 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
 575 libiberty_topdir=${libiberty_topdir}
 576 ]])
 577 AC_OUTPUT