acinclude/ltdl.m4
branchSDL-1.2
changeset 12337 169a5b55f240
parent 12335 5e68900d2232
child 12398 ebc235657ba4
equal deleted inserted replaced
12335:5e68900d2232 12337:169a5b55f240
     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