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