1# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*- 2# 3# Copyright (C) 1999-2006, 2007, 2008, 2011 Free Software Foundation, Inc. 4# Written by Thomas Tanner, 1999 5# 6# This file is free software; the Free Software Foundation gives 7# unlimited permission to copy and/or distribute it, with or without 8# modifications, as long as this notice is preserved. 9 10# serial 18 LTDL_INIT 11 12# LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE]) 13# ------------------------------------------ 14# DIRECTORY contains the libltdl sources. It is okay to call this 15# function multiple times, as long as the same DIRECTORY is always given. 16AC_DEFUN([LT_CONFIG_LTDL_DIR], 17[AC_BEFORE([$0], [LTDL_INIT]) 18_$0($*) 19])# LT_CONFIG_LTDL_DIR 20 21# We break this out into a separate macro, so that we can call it safely 22# internally without being caught accidentally by the sed scan in libtoolize. 23m4_defun([_LT_CONFIG_LTDL_DIR], 24[dnl remove trailing slashes 25m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$])) 26m4_case(_LTDL_DIR, 27 [], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply `.' 28 m4_if(_ARG_DIR, [.], 29 [], 30 [m4_define([_LTDL_DIR], _ARG_DIR) 31 _LT_SHELL_INIT([lt_ltdl_dir=']_ARG_DIR['])])], 32 [m4_if(_ARG_DIR, _LTDL_DIR, 33 [], 34 [m4_fatal([multiple libltdl directories: `]_LTDL_DIR[', `]_ARG_DIR['])])]) 35m4_popdef([_ARG_DIR]) 36])# _LT_CONFIG_LTDL_DIR 37 38# Initialise: 39m4_define([_LTDL_DIR], []) 40 41 42# _LT_BUILD_PREFIX 43# ---------------- 44# If Autoconf is new enough, expand to `${top_build_prefix}', otherwise 45# to `${top_builddir}/'. 46m4_define([_LT_BUILD_PREFIX], 47[m4_ifdef([AC_AUTOCONF_VERSION], 48 [m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.62]), 49 [-1], [m4_ifdef([_AC_HAVE_TOP_BUILD_PREFIX], 50 [${top_build_prefix}], 51 [${top_builddir}/])], 52 [${top_build_prefix}])], 53 [${top_builddir}/])[]dnl 54]) 55 56 57# LTDL_CONVENIENCE 58# ---------------- 59# sets LIBLTDL to the link flags for the libltdl convenience library and 60# LTDLINCL to the include flags for the libltdl header and adds 61# --enable-ltdl-convenience to the configure arguments. Note that 62# AC_CONFIG_SUBDIRS is not called here. LIBLTDL will be prefixed with 63# '${top_build_prefix}' if available, otherwise with '${top_builddir}/', 64# and LTDLINCL will be prefixed with '${top_srcdir}/' (note the single 65# quotes!). If your package is not flat and you're not using automake, 66# define top_build_prefix, top_builddir, and top_srcdir appropriately 67# in your Makefiles. 68AC_DEFUN([LTDL_CONVENIENCE], 69[AC_BEFORE([$0], [LTDL_INIT])dnl 70dnl Although the argument is deprecated and no longer documented, 71dnl LTDL_CONVENIENCE used to take a DIRECTORY orgument, if we have one 72dnl here make sure it is the same as any other declaration of libltdl's 73dnl location! This also ensures lt_ltdl_dir is set when configure.ac is 74dnl not yet using an explicit LT_CONFIG_LTDL_DIR. 75m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl 76_$0() 77])# LTDL_CONVENIENCE 78 79# AC_LIBLTDL_CONVENIENCE accepted a directory argument in older libtools, 80# now we have LT_CONFIG_LTDL_DIR: 81AU_DEFUN([AC_LIBLTDL_CONVENIENCE], 82[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])]) 83_LTDL_CONVENIENCE]) 84 85dnl aclocal-1.4 backwards compatibility: 86dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], []) 87 88 89# _LTDL_CONVENIENCE 90# ----------------- 91# Code shared by LTDL_CONVENIENCE and LTDL_INIT([convenience]). 92m4_defun([_LTDL_CONVENIENCE], 93[case $enable_ltdl_convenience in 94 no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;; 95 "") enable_ltdl_convenience=yes 96 ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;; 97esac 98LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la" 99LTDLDEPS=$LIBLTDL 100LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}" 101 102AC_SUBST([LIBLTDL]) 103AC_SUBST([LTDLDEPS]) 104AC_SUBST([LTDLINCL]) 105 106# For backwards non-gettext consistent compatibility... 107INCLTDL="$LTDLINCL" 108AC_SUBST([INCLTDL]) 109])# _LTDL_CONVENIENCE 110 111 112# LTDL_INSTALLABLE 113# ---------------- 114# sets LIBLTDL to the link flags for the libltdl installable library 115# and LTDLINCL to the include flags for the libltdl header and adds 116# --enable-ltdl-install to the configure arguments. Note that 117# AC_CONFIG_SUBDIRS is not called from here. If an installed libltdl 118# is not found, LIBLTDL will be prefixed with '${top_build_prefix}' if 119# available, otherwise with '${top_builddir}/', and LTDLINCL will be 120# prefixed with '${top_srcdir}/' (note the single quotes!). If your 121# package is not flat and you're not using automake, define top_build_prefix, 122# top_builddir, and top_srcdir appropriately in your Makefiles. 123# In the future, this macro may have to be called after LT_INIT. 124AC_DEFUN([LTDL_INSTALLABLE], 125[AC_BEFORE([$0], [LTDL_INIT])dnl 126dnl Although the argument is deprecated and no longer documented, 127dnl LTDL_INSTALLABLE used to take a DIRECTORY orgument, if we have one 128dnl here make sure it is the same as any other declaration of libltdl's 129dnl location! This also ensures lt_ltdl_dir is set when configure.ac is 130dnl not yet using an explicit LT_CONFIG_LTDL_DIR. 131m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl 132_$0() 133])# LTDL_INSTALLABLE 134 135# AC_LIBLTDL_INSTALLABLE accepted a directory argument in older libtools, 136# now we have LT_CONFIG_LTDL_DIR: 137AU_DEFUN([AC_LIBLTDL_INSTALLABLE], 138[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])]) 139_LTDL_INSTALLABLE]) 140 141dnl aclocal-1.4 backwards compatibility: 142dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], []) 143 144 145# _LTDL_INSTALLABLE 146# ----------------- 147# Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]). 148m4_defun([_LTDL_INSTALLABLE], 149[if test -f $prefix/lib/libltdl.la; then 150 lt_save_LDFLAGS="$LDFLAGS" 151 LDFLAGS="-L$prefix/lib $LDFLAGS" 152 AC_CHECK_LIB([ltdl], [lt_dlinit], [lt_lib_ltdl=yes]) 153 LDFLAGS="$lt_save_LDFLAGS" 154 if test x"${lt_lib_ltdl-no}" = xyes; then 155 if test x"$enable_ltdl_install" != xyes; then 156 # Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install 157 AC_MSG_WARN([not overwriting libltdl at $prefix, force with `--enable-ltdl-install']) 158 enable_ltdl_install=no 159 fi 160 elif test x"$enable_ltdl_install" = xno; then 161 AC_MSG_WARN([libltdl not installed, but installation disabled]) 162 fi 163fi 164 165# If configure.ac declared an installable ltdl, and the user didn't override 166# with --disable-ltdl-install, we will install the shipped libltdl. 167case $enable_ltdl_install in 168 no) ac_configure_args="$ac_configure_args --enable-ltdl-install=no" 169 LIBLTDL="-lltdl" 170 LTDLDEPS= 171 LTDLINCL= 172 ;; 173 *) enable_ltdl_install=yes 174 ac_configure_args="$ac_configure_args --enable-ltdl-install" 175 LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdl.la" 176 LTDLDEPS=$LIBLTDL 177 LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}" 178 ;; 179esac 180 181AC_SUBST([LIBLTDL]) 182AC_SUBST([LTDLDEPS]) 183AC_SUBST([LTDLINCL]) 184 185# For backwards non-gettext consistent compatibility... 186INCLTDL="$LTDLINCL" 187AC_SUBST([INCLTDL]) 188])# LTDL_INSTALLABLE 189 190 191# _LTDL_MODE_DISPATCH 192# ------------------- 193m4_define([_LTDL_MODE_DISPATCH], 194[dnl If _LTDL_DIR is `.', then we are configuring libltdl itself: 195m4_if(_LTDL_DIR, [], 196 [], 197 dnl if _LTDL_MODE was not set already, the default value is `subproject': 198 [m4_case(m4_default(_LTDL_MODE, [subproject]), 199 [subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR) 200 _LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"])], 201 [nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"; lt_libobj_prefix="$lt_ltdl_dir/"])], 202 [recursive], [], 203 [m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl 204dnl Be careful not to expand twice: 205m4_define([$0], []) 206])# _LTDL_MODE_DISPATCH 207 208 209# _LT_LIBOBJ(MODULE_NAME) 210# ----------------------- 211# Like AC_LIBOBJ, except that MODULE_NAME goes into _LT_LIBOBJS instead 212# of into LIBOBJS. 213AC_DEFUN([_LT_LIBOBJ], [ 214 m4_pattern_allow([^_LT_LIBOBJS$]) 215 _LT_LIBOBJS="$_LT_LIBOBJS $1.$ac_objext" 216])# _LT_LIBOBJS 217 218 219# LTDL_INIT([OPTIONS]) 220# -------------------- 221# Clients of libltdl can use this macro to allow the installer to 222# choose between a shipped copy of the ltdl sources or a preinstalled 223# version of the library. If the shipped ltdl sources are not in a 224# subdirectory named libltdl, the directory name must be given by 225# LT_CONFIG_LTDL_DIR. 226AC_DEFUN([LTDL_INIT], 227[dnl Parse OPTIONS 228_LT_SET_OPTIONS([$0], [$1]) 229 230dnl We need to keep our own list of libobjs separate from our parent project, 231dnl and the easiest way to do that is redefine the AC_LIBOBJs macro while 232dnl we look for our own LIBOBJs. 233m4_pushdef([AC_LIBOBJ], m4_defn([_LT_LIBOBJ])) 234m4_pushdef([AC_LIBSOURCES]) 235 236dnl If not otherwise defined, default to the 1.5.x compatible subproject mode: 237m4_if(_LTDL_MODE, [], 238 [m4_define([_LTDL_MODE], m4_default([$2], [subproject])) 239 m4_if([-1], [m4_bregexp(_LTDL_MODE, [\(subproject\|\(non\)?recursive\)])], 240 [m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])]) 241 242AC_ARG_WITH([included_ltdl], 243 [AS_HELP_STRING([--with-included-ltdl], 244 [use the GNU ltdl sources included here])]) 245 246if test "x$with_included_ltdl" != xyes; then 247 # We are not being forced to use the included libltdl sources, so 248 # decide whether there is a useful installed version we can use. 249 AC_CHECK_HEADER([ltdl.h], 250 [AC_CHECK_DECL([lt_dlinterface_register], 251 [AC_CHECK_LIB([ltdl], [lt_dladvise_preload], 252 [with_included_ltdl=no], 253 [with_included_ltdl=yes])], 254 [with_included_ltdl=yes], 255 [AC_INCLUDES_DEFAULT 256 #include <ltdl.h>])], 257 [with_included_ltdl=yes], 258 [AC_INCLUDES_DEFAULT] 259 ) 260fi 261 262dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE 263dnl was called yet, then for old times' sake, we assume libltdl is in an 264dnl eponymous directory: 265AC_PROVIDE_IFELSE([LT_CONFIG_LTDL_DIR], [], [_LT_CONFIG_LTDL_DIR([libltdl])]) 266 267AC_ARG_WITH([ltdl_include], 268 [AS_HELP_STRING([--with-ltdl-include=DIR], 269 [use the ltdl headers installed in DIR])]) 270 271if test -n "$with_ltdl_include"; then 272 if test -f "$with_ltdl_include/ltdl.h"; then : 273 else 274 AC_MSG_ERROR([invalid ltdl include directory: `$with_ltdl_include']) 275 fi 276else 277 with_ltdl_include=no 278fi 279 280AC_ARG_WITH([ltdl_lib], 281 [AS_HELP_STRING([--with-ltdl-lib=DIR], 282 [use the libltdl.la installed in DIR])]) 283 284if test -n "$with_ltdl_lib"; then 285 if test -f "$with_ltdl_lib/libltdl.la"; then : 286 else 287 AC_MSG_ERROR([invalid ltdl library directory: `$with_ltdl_lib']) 288 fi 289else 290 with_ltdl_lib=no 291fi 292 293case ,$with_included_ltdl,$with_ltdl_include,$with_ltdl_lib, in 294 ,yes,no,no,) 295 m4_case(m4_default(_LTDL_TYPE, [convenience]), 296 [convenience], [_LTDL_CONVENIENCE], 297 [installable], [_LTDL_INSTALLABLE], 298 [m4_fatal([unknown libltdl build type: ]_LTDL_TYPE)]) 299 ;; 300 ,no,no,no,) 301 # If the included ltdl is not to be used, then use the 302 # preinstalled libltdl we found. 303 AC_DEFINE([HAVE_LTDL], [1], 304 [Define this if a modern libltdl is already installed]) 305 LIBLTDL=-lltdl 306 LTDLDEPS= 307 LTDLINCL= 308 ;; 309 ,no*,no,*) 310 AC_MSG_ERROR([`--with-ltdl-include' and `--with-ltdl-lib' options must be used together]) 311 ;; 312 *) with_included_ltdl=no 313 LIBLTDL="-L$with_ltdl_lib -lltdl" 314 LTDLDEPS= 315 LTDLINCL="-I$with_ltdl_include" 316 ;; 317esac 318INCLTDL="$LTDLINCL" 319 320# Report our decision... 321AC_MSG_CHECKING([where to find libltdl headers]) 322AC_MSG_RESULT([$LTDLINCL]) 323AC_MSG_CHECKING([where to find libltdl library]) 324AC_MSG_RESULT([$LIBLTDL]) 325 326_LTDL_SETUP 327 328dnl restore autoconf definition. 329m4_popdef([AC_LIBOBJ]) 330m4_popdef([AC_LIBSOURCES]) 331 332AC_CONFIG_COMMANDS_PRE([ 333 _ltdl_libobjs= 334 _ltdl_ltlibobjs= 335 if test -n "$_LT_LIBOBJS"; then 336 # Remove the extension. 337 _lt_sed_drop_objext='s/\.o$//;s/\.obj$//' 338 for i in `for i in $_LT_LIBOBJS; do echo "$i"; done | sed "$_lt_sed_drop_objext" | sort -u`; do 339 _ltdl_libobjs="$_ltdl_libobjs $lt_libobj_prefix$i.$ac_objext" 340 _ltdl_ltlibobjs="$_ltdl_ltlibobjs $lt_libobj_prefix$i.lo" 341 done 342 fi 343 AC_SUBST([ltdl_LIBOBJS], [$_ltdl_libobjs]) 344 AC_SUBST([ltdl_LTLIBOBJS], [$_ltdl_ltlibobjs]) 345]) 346 347# Only expand once: 348m4_define([LTDL_INIT]) 349])# LTDL_INIT 350 351# Old names: 352AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT($@)]) 353AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)]) 354AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)]) 355dnl aclocal-1.4 backwards compatibility: 356dnl AC_DEFUN([AC_LIB_LTDL], []) 357dnl AC_DEFUN([AC_WITH_LTDL], []) 358dnl AC_DEFUN([LT_WITH_LTDL], []) 359 360 361# _LTDL_SETUP 362# ----------- 363# Perform all the checks necessary for compilation of the ltdl objects 364# -- including compiler checks and header checks. This is a public 365# interface mainly for the benefit of libltdl's own configure.ac, most 366# other users should call LTDL_INIT instead. 367AC_DEFUN([_LTDL_SETUP], 368[AC_REQUIRE([AC_PROG_CC])dnl 369AC_REQUIRE([LT_SYS_MODULE_EXT])dnl 370AC_REQUIRE([LT_SYS_MODULE_PATH])dnl 371AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl 372AC_REQUIRE([LT_LIB_DLLOAD])dnl 373AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl 374AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl 375AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl 376AC_REQUIRE([gl_FUNC_ARGZ])dnl 377 378m4_require([_LT_CHECK_OBJDIR])dnl 379m4_require([_LT_HEADER_DLFCN])dnl 380m4_require([_LT_CHECK_DLPREOPEN])dnl 381m4_require([_LT_DECL_SED])dnl 382 383dnl Don't require this, or it will be expanded earlier than the code 384dnl that sets the variables it relies on: 385_LT_ENABLE_INSTALL 386 387dnl _LTDL_MODE specific code must be called at least once: 388_LTDL_MODE_DISPATCH 389 390# In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS 391# the user used. This is so that ltdl.h can pick up the parent projects 392# config.h file, The first file in AC_CONFIG_HEADERS must contain the 393# definitions required by ltdl.c. 394# FIXME: Remove use of undocumented AC_LIST_HEADERS (2.59 compatibility). 395AC_CONFIG_COMMANDS_PRE([dnl 396m4_pattern_allow([^LT_CONFIG_H$])dnl 397m4_ifset([AH_HEADER], 398 [LT_CONFIG_H=AH_HEADER], 399 [m4_ifset([AC_LIST_HEADERS], 400 [LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's,^[[ ]]*,,;s,[[ :]].*$,,'`], 401 [])])]) 402AC_SUBST([LT_CONFIG_H]) 403 404AC_CHECK_HEADERS([unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h dirent.h], 405 [], [], [AC_INCLUDES_DEFAULT]) 406 407AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])]) 408AC_CHECK_FUNCS([strlcat strlcpy], [], [AC_LIBOBJ([lt__strl])]) 409 410m4_pattern_allow([LT_LIBEXT])dnl 411AC_DEFINE_UNQUOTED([LT_LIBEXT],["$libext"],[The archive extension]) 412 413name= 414eval "lt_libprefix=\"$libname_spec\"" 415m4_pattern_allow([LT_LIBPREFIX])dnl 416AC_DEFINE_UNQUOTED([LT_LIBPREFIX],["$lt_libprefix"],[The archive prefix]) 417 418name=ltdl 419eval "LTDLOPEN=\"$libname_spec\"" 420AC_SUBST([LTDLOPEN]) 421])# _LTDL_SETUP 422 423 424# _LT_ENABLE_INSTALL 425# ------------------ 426m4_define([_LT_ENABLE_INSTALL], 427[AC_ARG_ENABLE([ltdl-install], 428 [AS_HELP_STRING([--enable-ltdl-install], [install libltdl])]) 429 430case ,${enable_ltdl_install},${enable_ltdl_convenience} in 431 *yes*) ;; 432 *) enable_ltdl_convenience=yes ;; 433esac 434 435m4_ifdef([AM_CONDITIONAL], 436[AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno) 437 AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)]) 438])# _LT_ENABLE_INSTALL 439 440 441# LT_SYS_DLOPEN_DEPLIBS 442# --------------------- 443AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS], 444[AC_REQUIRE([AC_CANONICAL_HOST])dnl 445AC_CACHE_CHECK([whether deplibs are loaded by dlopen], 446 [lt_cv_sys_dlopen_deplibs], 447 [# PORTME does your system automatically load deplibs for dlopen? 448 # or its logical equivalent (e.g. shl_load for HP-UX < 11) 449 # For now, we just catch OSes we know something about -- in the 450 # future, we'll try test this programmatically. 451 lt_cv_sys_dlopen_deplibs=unknown 452 case $host_os in 453 aix3*|aix4.1.*|aix4.2.*) 454 # Unknown whether this is true for these versions of AIX, but 455 # we want this `case' here to explicitly catch those versions. 456 lt_cv_sys_dlopen_deplibs=unknown 457 ;; 458 aix[[4-9]]*) 459 lt_cv_sys_dlopen_deplibs=yes 460 ;; 461 amigaos*) 462 case $host_cpu in 463 powerpc) 464 lt_cv_sys_dlopen_deplibs=no 465 ;; 466 esac 467 ;; 468 darwin*) 469 # Assuming the user has installed a libdl from somewhere, this is true 470 # If you are looking for one http://www.opendarwin.org/projects/dlcompat 471 lt_cv_sys_dlopen_deplibs=yes 472 ;; 473 freebsd* | dragonfly*) 474 lt_cv_sys_dlopen_deplibs=yes 475 ;; 476 gnu* | linux* | k*bsd*-gnu | kopensolaris*-gnu) 477 # GNU and its variants, using gnu ld.so (Glibc) 478 lt_cv_sys_dlopen_deplibs=yes 479 ;; 480 hpux10*|hpux11*) 481 lt_cv_sys_dlopen_deplibs=yes 482 ;; 483 interix*) 484 lt_cv_sys_dlopen_deplibs=yes 485 ;; 486 irix[[12345]]*|irix6.[[01]]*) 487 # Catch all versions of IRIX before 6.2, and indicate that we don't 488 # know how it worked for any of those versions. 489 lt_cv_sys_dlopen_deplibs=unknown 490 ;; 491 irix*) 492 # The case above catches anything before 6.2, and it's known that 493 # at 6.2 and later dlopen does load deplibs. 494 lt_cv_sys_dlopen_deplibs=yes 495 ;; 496 netbsd* | netbsdelf*-gnu) 497 lt_cv_sys_dlopen_deplibs=yes 498 ;; 499 openbsd*) 500 lt_cv_sys_dlopen_deplibs=yes 501 ;; 502 osf[[1234]]*) 503 # dlopen did load deplibs (at least at 4.x), but until the 5.x series, 504 # it did *not* use an RPATH in a shared library to find objects the 505 # library depends on, so we explicitly say `no'. 506 lt_cv_sys_dlopen_deplibs=no 507 ;; 508 osf5.0|osf5.0a|osf5.1) 509 # dlopen *does* load deplibs and with the right loader patch applied 510 # it even uses RPATH in a shared library to search for shared objects 511 # that the library depends on, but there's no easy way to know if that 512 # patch is installed. Since this is the case, all we can really 513 # say is unknown -- it depends on the patch being installed. If 514 # it is, this changes to `yes'. Without it, it would be `no'. 515 lt_cv_sys_dlopen_deplibs=unknown 516 ;; 517 osf*) 518 # the two cases above should catch all versions of osf <= 5.1. Read 519 # the comments above for what we know about them. 520 # At > 5.1, deplibs are loaded *and* any RPATH in a shared library 521 # is used to find them so we can finally say `yes'. 522 lt_cv_sys_dlopen_deplibs=yes 523 ;; 524 qnx*) 525 lt_cv_sys_dlopen_deplibs=yes 526 ;; 527 solaris*) 528 lt_cv_sys_dlopen_deplibs=yes 529 ;; 530 sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*) 531 libltdl_cv_sys_dlopen_deplibs=yes 532 ;; 533 esac 534 ]) 535if test "$lt_cv_sys_dlopen_deplibs" != yes; then 536 AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1], 537 [Define if the OS needs help to load dependent libraries for dlopen().]) 538fi 539])# LT_SYS_DLOPEN_DEPLIBS 540 541# Old name: 542AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS]) 543dnl aclocal-1.4 backwards compatibility: 544dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], []) 545 546 547# LT_SYS_MODULE_EXT 548# ----------------- 549AC_DEFUN([LT_SYS_MODULE_EXT], 550[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl 551AC_CACHE_CHECK([which extension is used for runtime loadable modules], 552 [libltdl_cv_shlibext], 553[ 554module=yes 555eval libltdl_cv_shlibext=$shrext_cmds 556module=no 557eval libltdl_cv_shrext=$shrext_cmds 558 ]) 559if test -n "$libltdl_cv_shlibext"; then 560 m4_pattern_allow([LT_MODULE_EXT])dnl 561 AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"], 562 [Define to the extension used for runtime loadable modules, say, ".so".]) 563fi 564if test "$libltdl_cv_shrext" != "$libltdl_cv_shlibext"; then 565 m4_pattern_allow([LT_SHARED_EXT])dnl 566 AC_DEFINE_UNQUOTED([LT_SHARED_EXT], ["$libltdl_cv_shrext"], 567 [Define to the shared library suffix, say, ".dylib".]) 568fi 569])# LT_SYS_MODULE_EXT 570 571# Old name: 572AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT]) 573dnl aclocal-1.4 backwards compatibility: 574dnl AC_DEFUN([AC_LTDL_SHLIBEXT], []) 575 576 577# LT_SYS_MODULE_PATH 578# ------------------ 579AC_DEFUN([LT_SYS_MODULE_PATH], 580[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl 581AC_CACHE_CHECK([which variable specifies run-time module search path], 582 [lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"]) 583if test -n "$lt_cv_module_path_var"; then 584 m4_pattern_allow([LT_MODULE_PATH_VAR])dnl 585 AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"], 586 [Define to the name of the environment variable that determines the run-time module search path.]) 587fi 588])# LT_SYS_MODULE_PATH 589 590# Old name: 591AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH]) 592dnl aclocal-1.4 backwards compatibility: 593dnl AC_DEFUN([AC_LTDL_SHLIBPATH], []) 594 595 596# LT_SYS_DLSEARCH_PATH 597# -------------------- 598AC_DEFUN([LT_SYS_DLSEARCH_PATH], 599[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl 600AC_CACHE_CHECK([for the default library search path], 601 [lt_cv_sys_dlsearch_path], 602 [lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"]) 603if test -n "$lt_cv_sys_dlsearch_path"; then 604 sys_dlsearch_path= 605 for dir in $lt_cv_sys_dlsearch_path; do 606 if test -z "$sys_dlsearch_path"; then 607 sys_dlsearch_path="$dir" 608 else 609 sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir" 610 fi 611 done 612 m4_pattern_allow([LT_DLSEARCH_PATH])dnl 613 AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"], 614 [Define to the system default library search path.]) 615fi 616])# LT_SYS_DLSEARCH_PATH 617 618# Old name: 619AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH]) 620dnl aclocal-1.4 backwards compatibility: 621dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], []) 622 623 624# _LT_CHECK_DLPREOPEN 625# ------------------- 626m4_defun([_LT_CHECK_DLPREOPEN], 627[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl 628AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen], 629 [libltdl_cv_preloaded_symbols], 630 [if test -n "$lt_cv_sys_global_symbol_pipe"; then 631 libltdl_cv_preloaded_symbols=yes 632 else 633 libltdl_cv_preloaded_symbols=no 634 fi 635 ]) 636if test x"$libltdl_cv_preloaded_symbols" = xyes; then 637 AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1], 638 [Define if libtool can extract symbol lists from object files.]) 639fi 640])# _LT_CHECK_DLPREOPEN 641 642 643# LT_LIB_DLLOAD 644# ------------- 645AC_DEFUN([LT_LIB_DLLOAD], 646[m4_pattern_allow([^LT_DLLOADERS$]) 647LT_DLLOADERS= 648AC_SUBST([LT_DLLOADERS]) 649 650AC_LANG_PUSH([C]) 651 652LIBADD_DLOPEN= 653AC_SEARCH_LIBS([dlopen], [dl], 654 [AC_DEFINE([HAVE_LIBDL], [1], 655 [Define if you have the libdl library or equivalent.]) 656 if test "$ac_cv_search_dlopen" != "none required" ; then 657 LIBADD_DLOPEN="-ldl" 658 fi 659 libltdl_cv_lib_dl_dlopen="yes" 660 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"], 661 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H 662# include <dlfcn.h> 663#endif 664 ]], [[dlopen(0, 0);]])], 665 [AC_DEFINE([HAVE_LIBDL], [1], 666 [Define if you have the libdl library or equivalent.]) 667 libltdl_cv_func_dlopen="yes" 668 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"], 669 [AC_CHECK_LIB([svld], [dlopen], 670 [AC_DEFINE([HAVE_LIBDL], [1], 671 [Define if you have the libdl library or equivalent.]) 672 LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes" 673 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])]) 674if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes 675then 676 lt_save_LIBS="$LIBS" 677 LIBS="$LIBS $LIBADD_DLOPEN" 678 AC_CHECK_FUNCS([dlerror]) 679 LIBS="$lt_save_LIBS" 680fi 681AC_SUBST([LIBADD_DLOPEN]) 682 683LIBADD_SHL_LOAD= 684AC_CHECK_FUNC([shl_load], 685 [AC_DEFINE([HAVE_SHL_LOAD], [1], 686 [Define if you have the shl_load function.]) 687 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"], 688 [AC_CHECK_LIB([dld], [shl_load], 689 [AC_DEFINE([HAVE_SHL_LOAD], [1], 690 [Define if you have the shl_load function.]) 691 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la" 692 LIBADD_SHL_LOAD="-ldld"])]) 693AC_SUBST([LIBADD_SHL_LOAD]) 694 695case $host_os in 696darwin[[1567]].*) 697# We only want this for pre-Mac OS X 10.4. 698 AC_CHECK_FUNC([_dyld_func_lookup], 699 [AC_DEFINE([HAVE_DYLD], [1], 700 [Define if you have the _dyld_func_lookup function.]) 701 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"]) 702 ;; 703beos*) 704 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la" 705 ;; 706cygwin* | mingw* | os2* | pw32*) 707 AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]]) 708 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la" 709 ;; 710esac 711 712AC_CHECK_LIB([dld], [dld_link], 713 [AC_DEFINE([HAVE_DLD], [1], 714 [Define if you have the GNU dld library.]) 715 LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"]) 716AC_SUBST([LIBADD_DLD_LINK]) 717 718m4_pattern_allow([^LT_DLPREOPEN$]) 719LT_DLPREOPEN= 720if test -n "$LT_DLLOADERS" 721then 722 for lt_loader in $LT_DLLOADERS; do 723 LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader " 724 done 725 AC_DEFINE([HAVE_LIBDLLOADER], [1], 726 [Define if libdlloader will be built on this platform]) 727fi 728AC_SUBST([LT_DLPREOPEN]) 729 730dnl This isn't used anymore, but set it for backwards compatibility 731LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD" 732AC_SUBST([LIBADD_DL]) 733 734AC_LANG_POP 735])# LT_LIB_DLLOAD 736 737# Old name: 738AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD]) 739dnl aclocal-1.4 backwards compatibility: 740dnl AC_DEFUN([AC_LTDL_DLLIB], []) 741 742 743# LT_SYS_SYMBOL_USCORE 744# -------------------- 745# does the compiler prefix global symbols with an underscore? 746AC_DEFUN([LT_SYS_SYMBOL_USCORE], 747[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl 748AC_CACHE_CHECK([for _ prefix in compiled symbols], 749 [lt_cv_sys_symbol_underscore], 750 [lt_cv_sys_symbol_underscore=no 751 cat > conftest.$ac_ext <<_LT_EOF 752void nm_test_func(){} 753int main(){nm_test_func;return 0;} 754_LT_EOF 755 if AC_TRY_EVAL(ac_compile); then 756 # Now try to grab the symbols. 757 ac_nlist=conftest.nm 758 if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then 759 # See whether the symbols have a leading underscore. 760 if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then 761 lt_cv_sys_symbol_underscore=yes 762 else 763 if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then 764 : 765 else 766 echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD 767 fi 768 fi 769 else 770 echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD 771 fi 772 else 773 echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD 774 cat conftest.c >&AS_MESSAGE_LOG_FD 775 fi 776 rm -rf conftest* 777 ]) 778 sys_symbol_underscore=$lt_cv_sys_symbol_underscore 779 AC_SUBST([sys_symbol_underscore]) 780])# LT_SYS_SYMBOL_USCORE 781 782# Old name: 783AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE]) 784dnl aclocal-1.4 backwards compatibility: 785dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], []) 786 787 788# LT_FUNC_DLSYM_USCORE 789# -------------------- 790AC_DEFUN([LT_FUNC_DLSYM_USCORE], 791[AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl 792if test x"$lt_cv_sys_symbol_underscore" = xyes; then 793 if test x"$libltdl_cv_func_dlopen" = xyes || 794 test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then 795 AC_CACHE_CHECK([whether we have to add an underscore for dlsym], 796 [libltdl_cv_need_uscore], 797 [libltdl_cv_need_uscore=unknown 798 save_LIBS="$LIBS" 799 LIBS="$LIBS $LIBADD_DLOPEN" 800 _LT_TRY_DLOPEN_SELF( 801 [libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes], 802 [], [libltdl_cv_need_uscore=cross]) 803 LIBS="$save_LIBS" 804 ]) 805 fi 806fi 807 808if test x"$libltdl_cv_need_uscore" = xyes; then 809 AC_DEFINE([NEED_USCORE], [1], 810 [Define if dlsym() requires a leading underscore in symbol names.]) 811fi 812])# LT_FUNC_DLSYM_USCORE 813 814# Old name: 815AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE]) 816dnl aclocal-1.4 backwards compatibility: 817dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], []) 818