acinclude/ltdl.m4
author Sam Lantinga <slouken@libsdl.org>
Sun, 27 Feb 2011 22:22:58 -0800
changeset 5407 40c9d744e595
parent 3345 437378d409b1
permissions -rw-r--r--
Fixed compiling AltiVec blitters
     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