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# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
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# Copyright (C) 1999-2006, 2007, 2008 Free Software Foundation, Inc.
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# Written by Thomas Tanner, 1999
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# This file is free software; the Free Software Foundation gives
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# unlimited permission to copy and/or distribute it, with or without
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# modifications, as long as this notice is preserved.
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# LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE])
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# ------------------------------------------
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# DIRECTORY contains the libltdl sources. It is okay to call this
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# function multiple times, as long as the same DIRECTORY is always given.
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AC_DEFUN([LT_CONFIG_LTDL_DIR],
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[AC_BEFORE([$0], [LTDL_INIT])
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])# LT_CONFIG_LTDL_DIR
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# We break this out into a separate macro, so that we can call it safely
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# internally without being caught accidentally by the sed scan in libtoolize.
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m4_defun([_LT_CONFIG_LTDL_DIR],
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[dnl remove trailing slashes
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m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$]))
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[], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply `.'
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[m4_define([_LTDL_DIR], _ARG_DIR)
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_LT_SHELL_INIT([lt_ltdl_dir=']_ARG_DIR['])])],
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[m4_if(_ARG_DIR, _LTDL_DIR,
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[m4_fatal([multiple libltdl directories: `]_LTDL_DIR[', `]_ARG_DIR['])])])
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])# _LT_CONFIG_LTDL_DIR
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m4_define([_LTDL_DIR], [])
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# If Autoconf is new enough, expand to `${top_build_prefix}', otherwise
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# to `${top_builddir}/'.
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m4_define([_LT_BUILD_PREFIX],
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[m4_ifdef([AC_AUTOCONF_VERSION],
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[m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.62]),
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[-1], [m4_ifdef([_AC_HAVE_TOP_BUILD_PREFIX],
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[${top_build_prefix}],
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[${top_build_prefix}])],
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[${top_builddir}/])[]dnl
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# sets LIBLTDL to the link flags for the libltdl convenience library and
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# LTDLINCL to the include flags for the libltdl header and adds
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# --enable-ltdl-convenience to the configure arguments. Note that
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# AC_CONFIG_SUBDIRS is not called here. LIBLTDL will be prefixed with
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# '${top_build_prefix}' if available, otherwise with '${top_builddir}/',
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# and LTDLINCL will be prefixed with '${top_srcdir}/' (note the single
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# quotes!). If your package is not flat and you're not using automake,
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# define top_build_prefix, top_builddir, and top_srcdir appropriately
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AC_DEFUN([LTDL_CONVENIENCE],
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[AC_BEFORE([$0], [LTDL_INIT])dnl
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dnl Although the argument is deprecated and no longer documented,
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dnl LTDL_CONVENIENCE used to take a DIRECTORY orgument, if we have one
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dnl here make sure it is the same as any other declaration of libltdl's
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dnl location! This also ensures lt_ltdl_dir is set when configure.ac is
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dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
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m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
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# AC_LIBLTDL_CONVENIENCE accepted a directory argument in older libtools,
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# now we have LT_CONFIG_LTDL_DIR:
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AU_DEFUN([AC_LIBLTDL_CONVENIENCE],
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[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
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dnl aclocal-1.4 backwards compatibility:
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dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], [])
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# Code shared by LTDL_CONVENIENCE and LTDL_INIT([convenience]).
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m4_defun([_LTDL_CONVENIENCE],
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[case $enable_ltdl_convenience in
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no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;
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"") enable_ltdl_convenience=yes
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ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;
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LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la"
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LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
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# For backwards non-gettext consistent compatibility...
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])# _LTDL_CONVENIENCE
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# sets LIBLTDL to the link flags for the libltdl installable library
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# and LTDLINCL to the include flags for the libltdl header and adds
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# --enable-ltdl-install to the configure arguments. Note that
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# AC_CONFIG_SUBDIRS is not called from here. If an installed libltdl
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# is not found, LIBLTDL will be prefixed with '${top_build_prefix}' if
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# available, otherwise with '${top_builddir}/', and LTDLINCL will be
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# prefixed with '${top_srcdir}/' (note the single quotes!). If your
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# package is not flat and you're not using automake, define top_build_prefix,
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# top_builddir, and top_srcdir appropriately in your Makefiles.
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# In the future, this macro may have to be called after LT_INIT.
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AC_DEFUN([LTDL_INSTALLABLE],
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[AC_BEFORE([$0], [LTDL_INIT])dnl
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dnl Although the argument is deprecated and no longer documented,
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dnl LTDL_INSTALLABLE used to take a DIRECTORY orgument, if we have one
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dnl here make sure it is the same as any other declaration of libltdl's
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dnl location! This also ensures lt_ltdl_dir is set when configure.ac is
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dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
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m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
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# AC_LIBLTDL_INSTALLABLE accepted a directory argument in older libtools,
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# now we have LT_CONFIG_LTDL_DIR:
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AU_DEFUN([AC_LIBLTDL_INSTALLABLE],
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[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
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dnl aclocal-1.4 backwards compatibility:
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dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], [])
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# Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]).
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m4_defun([_LTDL_INSTALLABLE],
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[if test -f $prefix/lib/libltdl.la; then
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lt_save_LDFLAGS="$LDFLAGS"
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LDFLAGS="-L$prefix/lib $LDFLAGS"
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AC_CHECK_LIB([ltdl], [lt_dlinit], [lt_lib_ltdl=yes])
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LDFLAGS="$lt_save_LDFLAGS"
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if test x"${lt_lib_ltdl-no}" = xyes; then
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if test x"$enable_ltdl_install" != xyes; then
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# Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install
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AC_MSG_WARN([not overwriting libltdl at $prefix, force with `--enable-ltdl-install'])
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enable_ltdl_install=no
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elif test x"$enable_ltdl_install" = xno; then
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AC_MSG_WARN([libltdl not installed, but installation disabled])
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# If configure.ac declared an installable ltdl, and the user didn't override
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# with --disable-ltdl-install, we will install the shipped libltdl.
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case $enable_ltdl_install in
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no) ac_configure_args="$ac_configure_args --enable-ltdl-install=no"
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*) enable_ltdl_install=yes
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ac_configure_args="$ac_configure_args --enable-ltdl-install"
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LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdl.la"
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LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
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# For backwards non-gettext consistent compatibility...
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# _LTDL_MODE_DISPATCH
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# -------------------
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m4_define([_LTDL_MODE_DISPATCH],
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[dnl If _LTDL_DIR is `.', then we are configuring libltdl itself:
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dnl if _LTDL_MODE was not set already, the default value is `subproject':
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[m4_case(m4_default(_LTDL_MODE, [subproject]),
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[subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR)
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_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"])],
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[nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"; lt_libobj_prefix="$lt_ltdl_dir/"])],
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[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl
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dnl Be careful not to expand twice:
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])# _LTDL_MODE_DISPATCH
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# _LT_LIBOBJ(MODULE_NAME)
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# -----------------------
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# Like AC_LIBOBJ, except that MODULE_NAME goes into _LT_LIBOBJS instead
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AC_DEFUN([_LT_LIBOBJ], [
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m4_pattern_allow([^_LT_LIBOBJS$])
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_LT_LIBOBJS="$_LT_LIBOBJS $1.$ac_objext"
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# LTDL_INIT([OPTIONS])
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# --------------------
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# Clients of libltdl can use this macro to allow the installer to
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# choose between a shipped copy of the ltdl sources or a preinstalled
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# version of the library. If the shipped ltdl sources are not in a
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# subdirectory named libltdl, the directory name must be given by
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# LT_CONFIG_LTDL_DIR.
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AC_DEFUN([LTDL_INIT],
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_LT_SET_OPTIONS([$0], [$1])
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dnl We need to keep our own list of libobjs separate from our parent project,
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dnl and the easiest way to do that is redefine the AC_LIBOBJs macro while
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dnl we look for our own LIBOBJs.
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m4_pushdef([AC_LIBOBJ], m4_defn([_LT_LIBOBJ]))
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m4_pushdef([AC_LIBSOURCES])
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dnl If not otherwise defined, default to the 1.5.x compatible subproject mode:
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m4_if(_LTDL_MODE, [],
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[m4_define([_LTDL_MODE], m4_default([$2], [subproject]))
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m4_if([-1], [m4_bregexp(_LTDL_MODE, [\(subproject\|\(non\)?recursive\)])],
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[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])
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AC_ARG_WITH([included_ltdl],
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[AS_HELP_STRING([--with-included-ltdl],
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[use the GNU ltdl sources included here])])
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if test "x$with_included_ltdl" != xyes; then
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# We are not being forced to use the included libltdl sources, so
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# decide whether there is a useful installed version we can use.
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AC_CHECK_HEADER([ltdl.h],
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[AC_CHECK_DECL([lt_dlinterface_register],
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[AC_CHECK_LIB([ltdl], [lt_dladvise_preload],
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[with_included_ltdl=no],
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[with_included_ltdl=yes])],
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[with_included_ltdl=yes],
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#include <ltdl.h>])],
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[with_included_ltdl=yes],
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[AC_INCLUDES_DEFAULT]
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dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE
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dnl was called yet, then for old times' sake, we assume libltdl is in an
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dnl eponymous directory:
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AC_PROVIDE_IFELSE([LT_CONFIG_LTDL_DIR], [], [_LT_CONFIG_LTDL_DIR([libltdl])])
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AC_ARG_WITH([ltdl_include],
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[AS_HELP_STRING([--with-ltdl-include=DIR],
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[use the ltdl headers installed in DIR])])
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if test -n "$with_ltdl_include"; then
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if test -f "$with_ltdl_include/ltdl.h"; then :
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AC_MSG_ERROR([invalid ltdl include directory: `$with_ltdl_include'])
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AC_ARG_WITH([ltdl_lib],
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[AS_HELP_STRING([--with-ltdl-lib=DIR],
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[use the libltdl.la installed in DIR])])
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if test -n "$with_ltdl_lib"; then
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if test -f "$with_ltdl_lib/libltdl.la"; then :
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AC_MSG_ERROR([invalid ltdl library directory: `$with_ltdl_lib'])
293
case ,$with_included_ltdl,$with_ltdl_include,$with_ltdl_lib, in
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m4_case(m4_default(_LTDL_TYPE, [convenience]),
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[convenience], [_LTDL_CONVENIENCE],
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[installable], [_LTDL_INSTALLABLE],
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[m4_fatal([unknown libltdl build type: ]_LTDL_TYPE)])
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# If the included ltdl is not to be used, then use the
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# preinstalled libltdl we found.
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AC_DEFINE([HAVE_LTDL], [1],
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[Define this if a modern libltdl is already installed])
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AC_MSG_ERROR([`--with-ltdl-include' and `--with-ltdl-lib' options must be used together])
312
*) with_included_ltdl=no
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LIBLTDL="-L$with_ltdl_lib -lltdl"
315
LTDLINCL="-I$with_ltdl_include"
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# Report our decision...
321
AC_MSG_CHECKING([where to find libltdl headers])
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AC_MSG_RESULT([$LTDLINCL])
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AC_MSG_CHECKING([where to find libltdl library])
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AC_MSG_RESULT([$LIBLTDL])
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dnl restore autoconf definition.
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m4_popdef([AC_LIBOBJ])
330
m4_popdef([AC_LIBSOURCES])
332
AC_CONFIG_COMMANDS_PRE([
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if test -n "$_LT_LIBOBJS"; then
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# Remove the extension.
337
_lt_sed_drop_objext='s/\.o$//;s/\.obj$//'
338
for i in `for i in $_LT_LIBOBJS; do echo "$i"; done | sed "$_lt_sed_drop_objext" | sort -u`; do
339
_ltdl_libobjs="$_ltdl_libobjs $lt_libobj_prefix$i.$ac_objext"
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_ltdl_ltlibobjs="$_ltdl_ltlibobjs $lt_libobj_prefix$i.lo"
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AC_SUBST([ltdl_LIBOBJS], [$_ltdl_libobjs])
344
AC_SUBST([ltdl_LTLIBOBJS], [$_ltdl_ltlibobjs])
348
m4_define([LTDL_INIT])
352
AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT($@)])
353
AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)])
354
AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)])
355
dnl aclocal-1.4 backwards compatibility:
356
dnl AC_DEFUN([AC_LIB_LTDL], [])
357
dnl AC_DEFUN([AC_WITH_LTDL], [])
358
dnl AC_DEFUN([LT_WITH_LTDL], [])
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# Perform all the checks necessary for compilation of the ltdl objects
364
# -- including compiler checks and header checks. This is a public
365
# interface mainly for the benefit of libltdl's own configure.ac, most
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# other users should call LTDL_INIT instead.
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AC_DEFUN([_LTDL_SETUP],
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[AC_REQUIRE([AC_PROG_CC])dnl
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AC_REQUIRE([LT_SYS_MODULE_EXT])dnl
370
AC_REQUIRE([LT_SYS_MODULE_PATH])dnl
371
AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl
372
AC_REQUIRE([LT_LIB_DLLOAD])dnl
373
AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
374
AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl
375
AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl
376
AC_REQUIRE([gl_FUNC_ARGZ])dnl
378
m4_require([_LT_CHECK_OBJDIR])dnl
379
m4_require([_LT_HEADER_DLFCN])dnl
380
m4_require([_LT_CHECK_DLPREOPEN])dnl
381
m4_require([_LT_DECL_SED])dnl
383
dnl Don't require this, or it will be expanded earlier than the code
384
dnl that sets the variables it relies on:
387
dnl _LTDL_MODE specific code must be called at least once:
390
# In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS
391
# the user used. This is so that ltdl.h can pick up the parent projects
392
# config.h file, The first file in AC_CONFIG_HEADERS must contain the
393
# definitions required by ltdl.c.
394
# FIXME: Remove use of undocumented AC_LIST_HEADERS (2.59 compatibility).
395
AC_CONFIG_COMMANDS_PRE([dnl
396
m4_pattern_allow([^LT_CONFIG_H$])dnl
397
m4_ifset([AH_HEADER],
398
[LT_CONFIG_H=AH_HEADER],
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[m4_ifset([AC_LIST_HEADERS],
400
[LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's,^[[ ]]*,,;s,[[ :]].*$,,'`],
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AC_SUBST([LT_CONFIG_H])
404
AC_CHECK_HEADERS([unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h dirent.h],
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[], [], [AC_INCLUDES_DEFAULT])
407
AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])])
408
AC_CHECK_FUNCS([strlcat strlcpy], [], [AC_LIBOBJ([lt__strl])])
410
AC_DEFINE_UNQUOTED([LT_LIBEXT],["$libext"],[The archive extension])
413
LTDLOPEN=`eval "\\$ECHO \"$libname_spec\""`
420
m4_define([_LT_ENABLE_INSTALL],
421
[AC_ARG_ENABLE([ltdl-install],
422
[AS_HELP_STRING([--enable-ltdl-install], [install libltdl])])
424
case ,${enable_ltdl_install},${enable_ltdl_convenience} in
426
*) enable_ltdl_convenience=yes ;;
429
m4_ifdef([AM_CONDITIONAL],
430
[AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno)
431
AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)])
432
])# _LT_ENABLE_INSTALL
435
# LT_SYS_DLOPEN_DEPLIBS
436
# ---------------------
437
AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS],
438
[AC_REQUIRE([AC_CANONICAL_HOST])dnl
439
AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
440
[lt_cv_sys_dlopen_deplibs],
441
[# PORTME does your system automatically load deplibs for dlopen?
442
# or its logical equivalent (e.g. shl_load for HP-UX < 11)
443
# For now, we just catch OSes we know something about -- in the
444
# future, we'll try test this programmatically.
445
lt_cv_sys_dlopen_deplibs=unknown
447
aix3*|aix4.1.*|aix4.2.*)
448
# Unknown whether this is true for these versions of AIX, but
449
# we want this `case' here to explicitly catch those versions.
450
lt_cv_sys_dlopen_deplibs=unknown
453
lt_cv_sys_dlopen_deplibs=yes
458
lt_cv_sys_dlopen_deplibs=no
463
# Assuming the user has installed a libdl from somewhere, this is true
464
# If you are looking for one http://www.opendarwin.org/projects/dlcompat
465
lt_cv_sys_dlopen_deplibs=yes
467
freebsd* | dragonfly*)
468
lt_cv_sys_dlopen_deplibs=yes
470
gnu* | linux* | k*bsd*-gnu | kopensolaris*-gnu)
471
# GNU and its variants, using gnu ld.so (Glibc)
472
lt_cv_sys_dlopen_deplibs=yes
475
lt_cv_sys_dlopen_deplibs=yes
478
lt_cv_sys_dlopen_deplibs=yes
480
irix[[12345]]*|irix6.[[01]]*)
481
# Catch all versions of IRIX before 6.2, and indicate that we don't
482
# know how it worked for any of those versions.
483
lt_cv_sys_dlopen_deplibs=unknown
486
# The case above catches anything before 6.2, and it's known that
487
# at 6.2 and later dlopen does load deplibs.
488
lt_cv_sys_dlopen_deplibs=yes
490
netbsd* | netbsdelf*-gnu)
491
lt_cv_sys_dlopen_deplibs=yes
494
lt_cv_sys_dlopen_deplibs=yes
497
# dlopen did load deplibs (at least at 4.x), but until the 5.x series,
498
# it did *not* use an RPATH in a shared library to find objects the
499
# library depends on, so we explicitly say `no'.
500
lt_cv_sys_dlopen_deplibs=no
502
osf5.0|osf5.0a|osf5.1)
503
# dlopen *does* load deplibs and with the right loader patch applied
504
# it even uses RPATH in a shared library to search for shared objects
505
# that the library depends on, but there's no easy way to know if that
506
# patch is installed. Since this is the case, all we can really
507
# say is unknown -- it depends on the patch being installed. If
508
# it is, this changes to `yes'. Without it, it would be `no'.
509
lt_cv_sys_dlopen_deplibs=unknown
512
# the two cases above should catch all versions of osf <= 5.1. Read
513
# the comments above for what we know about them.
514
# At > 5.1, deplibs are loaded *and* any RPATH in a shared library
515
# is used to find them so we can finally say `yes'.
516
lt_cv_sys_dlopen_deplibs=yes
519
lt_cv_sys_dlopen_deplibs=yes
522
lt_cv_sys_dlopen_deplibs=yes
524
sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
525
libltdl_cv_sys_dlopen_deplibs=yes
529
if test "$lt_cv_sys_dlopen_deplibs" != yes; then
530
AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
531
[Define if the OS needs help to load dependent libraries for dlopen().])
533
])# LT_SYS_DLOPEN_DEPLIBS
536
AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS])
537
dnl aclocal-1.4 backwards compatibility:
538
dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [])
543
AC_DEFUN([LT_SYS_MODULE_EXT],
544
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
545
AC_CACHE_CHECK([which extension is used for runtime loadable modules],
546
[libltdl_cv_shlibext],
549
eval libltdl_cv_shlibext=$shrext_cmds
551
if test -n "$libltdl_cv_shlibext"; then
552
m4_pattern_allow([LT_MODULE_EXT])dnl
553
AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"],
554
[Define to the extension used for runtime loadable modules, say, ".so".])
556
])# LT_SYS_MODULE_EXT
559
AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT])
560
dnl aclocal-1.4 backwards compatibility:
561
dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])
566
AC_DEFUN([LT_SYS_MODULE_PATH],
567
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
568
AC_CACHE_CHECK([which variable specifies run-time module search path],
569
[lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"])
570
if test -n "$lt_cv_module_path_var"; then
571
m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
572
AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
573
[Define to the name of the environment variable that determines the run-time module search path.])
575
])# LT_SYS_MODULE_PATH
578
AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH])
579
dnl aclocal-1.4 backwards compatibility:
580
dnl AC_DEFUN([AC_LTDL_SHLIBPATH], [])
583
# LT_SYS_DLSEARCH_PATH
584
# --------------------
585
AC_DEFUN([LT_SYS_DLSEARCH_PATH],
586
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
587
AC_CACHE_CHECK([for the default library search path],
588
[lt_cv_sys_dlsearch_path],
589
[lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"])
590
if test -n "$lt_cv_sys_dlsearch_path"; then
592
for dir in $lt_cv_sys_dlsearch_path; do
593
if test -z "$sys_dlsearch_path"; then
594
sys_dlsearch_path="$dir"
596
sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir"
599
m4_pattern_allow([LT_DLSEARCH_PATH])dnl
600
AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"],
601
[Define to the system default library search path.])
603
])# LT_SYS_DLSEARCH_PATH
606
AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH])
607
dnl aclocal-1.4 backwards compatibility:
608
dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [])
611
# _LT_CHECK_DLPREOPEN
612
# -------------------
613
m4_defun([_LT_CHECK_DLPREOPEN],
614
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
615
AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
616
[libltdl_cv_preloaded_symbols],
617
[if test -n "$lt_cv_sys_global_symbol_pipe"; then
618
libltdl_cv_preloaded_symbols=yes
620
libltdl_cv_preloaded_symbols=no
623
if test x"$libltdl_cv_preloaded_symbols" = xyes; then
624
AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
625
[Define if libtool can extract symbol lists from object files.])
627
])# _LT_CHECK_DLPREOPEN
632
AC_DEFUN([LT_LIB_DLLOAD],
633
[m4_pattern_allow([^LT_DLLOADERS$])
635
AC_SUBST([LT_DLLOADERS])
640
AC_SEARCH_LIBS([dlopen], [dl],
641
[AC_DEFINE([HAVE_LIBDL], [1],
642
[Define if you have the libdl library or equivalent.])
643
if test "$ac_cv_search_dlopen" != "none required" ; then
646
libltdl_cv_lib_dl_dlopen="yes"
647
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
648
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
651
]], [[dlopen(0, 0);]])],
652
[AC_DEFINE([HAVE_LIBDL], [1],
653
[Define if you have the libdl library or equivalent.])
654
libltdl_cv_func_dlopen="yes"
655
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
656
[AC_CHECK_LIB([svld], [dlopen],
657
[AC_DEFINE([HAVE_LIBDL], [1],
658
[Define if you have the libdl library or equivalent.])
659
LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes"
660
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
661
if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes
664
LIBS="$LIBS $LIBADD_DLOPEN"
665
AC_CHECK_FUNCS([dlerror])
668
AC_SUBST([LIBADD_DLOPEN])
671
AC_CHECK_FUNC([shl_load],
672
[AC_DEFINE([HAVE_SHL_LOAD], [1],
673
[Define if you have the shl_load function.])
674
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"],
675
[AC_CHECK_LIB([dld], [shl_load],
676
[AC_DEFINE([HAVE_SHL_LOAD], [1],
677
[Define if you have the shl_load function.])
678
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
679
LIBADD_SHL_LOAD="-ldld"])])
680
AC_SUBST([LIBADD_SHL_LOAD])
684
# We only want this for pre-Mac OS X 10.4.
685
AC_CHECK_FUNC([_dyld_func_lookup],
686
[AC_DEFINE([HAVE_DYLD], [1],
687
[Define if you have the _dyld_func_lookup function.])
688
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"])
691
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la"
693
cygwin* | mingw* | os2* | pw32*)
694
AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]])
695
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la"
699
AC_CHECK_LIB([dld], [dld_link],
700
[AC_DEFINE([HAVE_DLD], [1],
701
[Define if you have the GNU dld library.])
702
LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"])
703
AC_SUBST([LIBADD_DLD_LINK])
705
m4_pattern_allow([^LT_DLPREOPEN$])
707
if test -n "$LT_DLLOADERS"
709
for lt_loader in $LT_DLLOADERS; do
710
LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader "
712
AC_DEFINE([HAVE_LIBDLLOADER], [1],
713
[Define if libdlloader will be built on this platform])
715
AC_SUBST([LT_DLPREOPEN])
717
dnl This isn't used anymore, but set it for backwards compatibility
718
LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD"
719
AC_SUBST([LIBADD_DL])
725
AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD])
726
dnl aclocal-1.4 backwards compatibility:
727
dnl AC_DEFUN([AC_LTDL_DLLIB], [])
730
# LT_SYS_SYMBOL_USCORE
731
# --------------------
732
# does the compiler prefix global symbols with an underscore?
733
AC_DEFUN([LT_SYS_SYMBOL_USCORE],
734
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
735
AC_CACHE_CHECK([for _ prefix in compiled symbols],
736
[lt_cv_sys_symbol_underscore],
737
[lt_cv_sys_symbol_underscore=no
738
cat > conftest.$ac_ext <<_LT_EOF
739
void nm_test_func(){}
740
int main(){nm_test_func;return 0;}
742
if AC_TRY_EVAL(ac_compile); then
743
# Now try to grab the symbols.
745
if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
746
# See whether the symbols have a leading underscore.
747
if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
748
lt_cv_sys_symbol_underscore=yes
750
if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
753
echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
757
echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
760
echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
761
cat conftest.c >&AS_MESSAGE_LOG_FD
765
sys_symbol_underscore=$lt_cv_sys_symbol_underscore
766
AC_SUBST([sys_symbol_underscore])
767
])# LT_SYS_SYMBOL_USCORE
770
AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE])
771
dnl aclocal-1.4 backwards compatibility:
772
dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [])
775
# LT_FUNC_DLSYM_USCORE
776
# --------------------
777
AC_DEFUN([LT_FUNC_DLSYM_USCORE],
778
[AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
779
if test x"$lt_cv_sys_symbol_underscore" = xyes; then
780
if test x"$libltdl_cv_func_dlopen" = xyes ||
781
test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then
782
AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
783
[libltdl_cv_need_uscore],
784
[libltdl_cv_need_uscore=unknown
786
LIBS="$LIBS $LIBADD_DLOPEN"
788
[libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes],
789
[], [libltdl_cv_need_uscore=cross])
795
if test x"$libltdl_cv_need_uscore" = xyes; then
796
AC_DEFINE([NEED_USCORE], [1],
797
[Define if dlsym() requires a leading underscore in symbol names.])
799
])# LT_FUNC_DLSYM_USCORE
802
AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE])
803
dnl aclocal-1.4 backwards compatibility:
804
dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])
added
removed
m4/ltdl.m4
