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Comparing ircd-hybrid/branches/8.2.x/m4/ltdl.m4 (file contents):
Revision 4900 by michael, Thu Apr 24 16:15:51 2014 UTC vs.
Revision 4901 by michael, Sat Nov 22 18:31:53 2014 UTC

#	Line 1 | Line 1
1		# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
2		#
3	<	#   Copyright (C) 1999-2006, 2007, 2008, 2011 Free Software Foundation, Inc.
3	>	#   Copyright (C) 1999-2008, 2011-2014 Free Software Foundation, Inc.
4		#   Written by Thomas Tanner, 1999
5		#
6		# This file is free software; the Free Software Foundation gives
7		# unlimited permission to copy and/or distribute it, with or without
8		# modifications, as long as this notice is preserved.
9
10	<	# serial 18 LTDL_INIT
10	>	# serial 19 LTDL_INIT
11
12		# LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE])
13		# ------------------------------------------
#	Line 24 | Line 24 | m4_defun([_LT_CONFIG_LTDL_DIR],
24		[dnl remove trailing slashes
25		m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$]))
26		m4_case(_LTDL_DIR,
27	<	[], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply `.'
27	>	[], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply '.'
28		m4_if(_ARG_DIR, [.],
29		[],
30		[m4_define([_LTDL_DIR], _ARG_DIR)
31		_LT_SHELL_INIT([lt_ltdl_dir=']_ARG_DIR['])])],
32		[m4_if(_ARG_DIR, _LTDL_DIR,
33		[],
34	<	[m4_fatal([multiple libltdl directories: `]_LTDL_DIR[', `]_ARG_DIR['])])])
34	>	[m4_fatal([multiple libltdl directories: ']_LTDL_DIR[', ']_ARG_DIR['])])])
35		m4_popdef([_ARG_DIR])
36		])# _LT_CONFIG_LTDL_DIR
37
#	Line 41 | Line 41 | m4_define([_LTDL_DIR], [])
41
42		# _LT_BUILD_PREFIX
43		# ----------------
44	<	# If Autoconf is new enough, expand to `${top_build_prefix}', otherwise
45	<	# to `${top_builddir}/'.
44	>	# If Autoconf is new enough, expand to '$(top_build_prefix)', otherwise
45	>	# to '$(top_builddir)/'.
46		m4_define([_LT_BUILD_PREFIX],
47		[m4_ifdef([AC_AUTOCONF_VERSION],
48		[m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.62]),
49		[-1], [m4_ifdef([_AC_HAVE_TOP_BUILD_PREFIX],
50	<	[${top_build_prefix}],
51	<	[${top_builddir}/])],
52	<	[${top_build_prefix}])],
53	<	[${top_builddir}/])[]dnl
50	>	[$(top_build_prefix)],
51	>	[$(top_builddir)/])],
52	>	[$(top_build_prefix)])],
53	>	[$(top_builddir)/])[]dnl
54		])
55
56
#	Line 60 | Line 60 | m4_define([_LT_BUILD_PREFIX],
60		# LTDLINCL to the include flags for the libltdl header and adds
61		# --enable-ltdl-convenience to the configure arguments.  Note that
62		# AC_CONFIG_SUBDIRS is not called here.  LIBLTDL will be prefixed with
63	<	# '${top_build_prefix}' if available, otherwise with '${top_builddir}/',
64	<	# and LTDLINCL will be prefixed with '${top_srcdir}/' (note the single
63	>	# '$(top_build_prefix)' if available, otherwise with '$(top_builddir)/',
64	>	# and LTDLINCL will be prefixed with '$(top_srcdir)/' (note the single
65		# quotes!).  If your package is not flat and you're not using automake,
66		# define top_build_prefix, top_builddir, and top_srcdir appropriately
67		# in your Makefiles.
#	Line 97 | Line 97 | m4_defun([_LTDL_CONVENIENCE],
97		esac
98		LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la"
99		LTDLDEPS=$LIBLTDL
100	<	LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
100	>	LTDLINCL='-I$(top_srcdir)'"${lt_ltdl_dir+/$lt_ltdl_dir}"
101
102		AC_SUBST([LIBLTDL])
103		AC_SUBST([LTDLDEPS])
104		AC_SUBST([LTDLINCL])
105
106		# For backwards non-gettext consistent compatibility...
107	<	INCLTDL="$LTDLINCL"
107	>	INCLTDL=$LTDLINCL
108		AC_SUBST([INCLTDL])
109		])# _LTDL_CONVENIENCE
110
#	Line 115 | Line 115 | AC_SUBST([INCLTDL])
115		# and LTDLINCL to the include flags for the libltdl header and adds
116		# --enable-ltdl-install to the configure arguments.  Note that
117		# AC_CONFIG_SUBDIRS is not called from here.  If an installed libltdl
118	<	# is not found, LIBLTDL will be prefixed with '${top_build_prefix}' if
119	<	# available, otherwise with '${top_builddir}/', and LTDLINCL will be
120	<	# prefixed with '${top_srcdir}/' (note the single quotes!).  If your
118	>	# is not found, LIBLTDL will be prefixed with '$(top_build_prefix)' if
119	>	# available, otherwise with '$(top_builddir)/', and LTDLINCL will be
120	>	# prefixed with '$(top_srcdir)/' (note the single quotes!).  If your
121		# package is not flat and you're not using automake, define top_build_prefix,
122		# top_builddir, and top_srcdir appropriately in your Makefiles.
123		# In the future, this macro may have to be called after LT_INIT.
#	Line 146 | Line 146 | dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], [
146		# -----------------
147		# Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]).
148		m4_defun([_LTDL_INSTALLABLE],
149	<	[if test -f $prefix/lib/libltdl.la; then
150	<	lt_save_LDFLAGS="$LDFLAGS"
149	>	[if test -f "$prefix/lib/libltdl.la"; then
150	>	lt_save_LDFLAGS=$LDFLAGS
151		LDFLAGS="-L$prefix/lib $LDFLAGS"
152		AC_CHECK_LIB([ltdl], [lt_dlinit], [lt_lib_ltdl=yes])
153	<	LDFLAGS="$lt_save_LDFLAGS"
154	<	if test x"${lt_lib_ltdl-no}" = xyes; then
155	<	if test x"$enable_ltdl_install" != xyes; then
153	>	LDFLAGS=$lt_save_LDFLAGS
154	>	if test yes = "${lt_lib_ltdl-no}"; then
155	>	if test yes != "$enable_ltdl_install"; then
156		# Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install
157	<	AC_MSG_WARN([not overwriting libltdl at $prefix, force with `--enable-ltdl-install'])
157	>	AC_MSG_WARN([not overwriting libltdl at $prefix, force with '--enable-ltdl-install'])
158		enable_ltdl_install=no
159		fi
160	<	elif test x"$enable_ltdl_install" = xno; then
160	>	elif test no = "$enable_ltdl_install"; then
161		AC_MSG_WARN([libltdl not installed, but installation disabled])
162		fi
163		fi
#	Line 166 | Line 166 | fi
166		# with --disable-ltdl-install, we will install the shipped libltdl.
167		case $enable_ltdl_install in
168		no) ac_configure_args="$ac_configure_args --enable-ltdl-install=no"
169	<	LIBLTDL="-lltdl"
169	>	LIBLTDL=-lltdl
170		LTDLDEPS=
171		LTDLINCL=
172		;;
#	Line 174 | Line 174 | case $enable_ltdl_install in
174		ac_configure_args="$ac_configure_args --enable-ltdl-install"
175		LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdl.la"
176		LTDLDEPS=$LIBLTDL
177	<	LTDLINCL='-I${top_srcdir}'"${lt_ltdl_dir+/$lt_ltdl_dir}"
177	>	LTDLINCL='-I$(top_srcdir)'"${lt_ltdl_dir+/$lt_ltdl_dir}"
178		;;
179		esac
180
#	Line 183 | Line 183 | AC_SUBST([LTDLDEPS])
183		AC_SUBST([LTDLINCL])
184
185		# For backwards non-gettext consistent compatibility...
186	<	INCLTDL="$LTDLINCL"
186	>	INCLTDL=$LTDLINCL
187		AC_SUBST([INCLTDL])
188		])# LTDL_INSTALLABLE
189
#	Line 191 | Line 191 | AC_SUBST([INCLTDL])
191		# _LTDL_MODE_DISPATCH
192		# -------------------
193		m4_define([_LTDL_MODE_DISPATCH],
194	<	[dnl If _LTDL_DIR is `.', then we are configuring libltdl itself:
194	>	[dnl If _LTDL_DIR is '.', then we are configuring libltdl itself:
195		m4_if(_LTDL_DIR, [],
196		[],
197	<	dnl if _LTDL_MODE was not set already, the default value is `subproject':
197	>	dnl if _LTDL_MODE was not set already, the default value is 'subproject':
198		[m4_case(m4_default(_LTDL_MODE, [subproject]),
199		[subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR)
200	<	_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"])],
201	<	[nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir="$lt_ltdl_dir"; lt_libobj_prefix="$lt_ltdl_dir/"])],
200	>	_LT_SHELL_INIT([lt_dlopen_dir=$lt_ltdl_dir])],
201	>	[nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir=$lt_ltdl_dir; lt_libobj_prefix=$lt_ltdl_dir/])],
202		[recursive], [],
203		[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl
204		dnl Be careful not to expand twice:
#	Line 243 | Line 243 | AC_ARG_WITH([included_ltdl],
243		[AS_HELP_STRING([--with-included-ltdl],
244		[use the GNU ltdl sources included here])])
245
246	<	if test "x$with_included_ltdl" != xyes; then
246	>	if test yes != "$with_included_ltdl"; then
247		# We are not being forced to use the included libltdl sources, so
248		# decide whether there is a useful installed version we can use.
249		AC_CHECK_HEADER([ltdl.h],
#	Line 271 | Line 271 | AC_ARG_WITH([ltdl_include],
271		if test -n "$with_ltdl_include"; then
272		if test -f "$with_ltdl_include/ltdl.h"; then :
273		else
274	<	AC_MSG_ERROR([invalid ltdl include directory: `$with_ltdl_include'])
274	>	AC_MSG_ERROR([invalid ltdl include directory: '$with_ltdl_include'])
275		fi
276		else
277		with_ltdl_include=no
#	Line 284 | Line 284 | AC_ARG_WITH([ltdl_lib],
284		if test -n "$with_ltdl_lib"; then
285		if test -f "$with_ltdl_lib/libltdl.la"; then :
286		else
287	<	AC_MSG_ERROR([invalid ltdl library directory: `$with_ltdl_lib'])
287	>	AC_MSG_ERROR([invalid ltdl library directory: '$with_ltdl_lib'])
288		fi
289		else
290		with_ltdl_lib=no
#	Line 307 | Line 307 | case ,$with_included_ltdl,$with_ltdl_inc
307		LTDLINCL=
308		;;
309		,no*,no,*)
310	<	AC_MSG_ERROR([`--with-ltdl-include' and `--with-ltdl-lib' options must be used together])
310	>	AC_MSG_ERROR(['--with-ltdl-include' and '--with-ltdl-lib' options must be used together])
311		;;
312		*)    with_included_ltdl=no
313		LIBLTDL="-L$with_ltdl_lib -lltdl"
314		LTDLDEPS=
315	<	LTDLINCL="-I$with_ltdl_include"
315	>	LTDLINCL=-I$with_ltdl_include
316		;;
317		esac
318	<	INCLTDL="$LTDLINCL"
318	>	INCLTDL=$LTDLINCL
319
320		# Report our decision...
321		AC_MSG_CHECKING([where to find libltdl headers])
#	Line 397 | Line 397 | m4_pattern_allow([^LT_CONFIG_H$])dnl
397		m4_ifset([AH_HEADER],
398		[LT_CONFIG_H=AH_HEADER],
399		[m4_ifset([AC_LIST_HEADERS],
400	<	[LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's,^[[      ]]*,,;s,[[ :]].*$,,'`],
400	>	[LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's|^[[      ]]*||;s|[[ :]].*$||'`],
401		[])])])
402		AC_SUBST([LT_CONFIG_H])
403
#	Line 427 | Line 427 | m4_define([_LT_ENABLE_INSTALL],
427		[AC_ARG_ENABLE([ltdl-install],
428		[AS_HELP_STRING([--enable-ltdl-install], [install libltdl])])
429
430	<	case ,${enable_ltdl_install},${enable_ltdl_convenience} in
430	>	case ,$enable_ltdl_install,$enable_ltdl_convenience in
431		*yes*) ;;
432		*) enable_ltdl_convenience=yes ;;
433		esac
434
435		m4_ifdef([AM_CONDITIONAL],
436	<	[AM_CONDITIONAL(INSTALL_LTDL, test x"${enable_ltdl_install-no}" != xno)
437	<	AM_CONDITIONAL(CONVENIENCE_LTDL, test x"${enable_ltdl_convenience-no}" != xno)])
436	>	[AM_CONDITIONAL(INSTALL_LTDL, test no != "${enable_ltdl_install-no}")
437	>	AM_CONDITIONAL(CONVENIENCE_LTDL, test no != "${enable_ltdl_convenience-no}")])
438		])# _LT_ENABLE_INSTALL
439
440
#	Line 452 | Line 452 | AC_CACHE_CHECK([whether deplibs are load
452		case $host_os in
453		aix3*|aix4.1.*|aix4.2.*)
454		# Unknown whether this is true for these versions of AIX, but
455	<	# we want this `case' here to explicitly catch those versions.
455	>	# we want this 'case' here to explicitly catch those versions.
456		lt_cv_sys_dlopen_deplibs=unknown
457		;;
458		aix[[4-9]]*)
#	Line 465 | Line 465 | AC_CACHE_CHECK([whether deplibs are load
465		;;
466		esac
467		;;
468	+	bitrig*)
469	+	lt_cv_sys_dlopen_deplibs=yes
470	+	;;
471		darwin*)
472		# Assuming the user has installed a libdl from somewhere, this is true
473		# If you are looking for one http://www.opendarwin.org/projects/dlcompat
#	Line 502 | Line 505 | AC_CACHE_CHECK([whether deplibs are load
505		osf[[1234]]*)
506		# dlopen did load deplibs (at least at 4.x), but until the 5.x series,
507		# it did *not* use an RPATH in a shared library to find objects the
508	<	# library depends on, so we explicitly say `no'.
508	>	# library depends on, so we explicitly say 'no'.
509		lt_cv_sys_dlopen_deplibs=no
510		;;
511		osf5.0|osf5.0a|osf5.1)
#	Line 511 | Line 514 | AC_CACHE_CHECK([whether deplibs are load
514		# that the library depends on, but there's no easy way to know if that
515		# patch is installed.  Since this is the case, all we can really
516		# say is unknown -- it depends on the patch being installed.  If
517	<	# it is, this changes to `yes'.  Without it, it would be `no'.
517	>	# it is, this changes to 'yes'.  Without it, it would be 'no'.
518		lt_cv_sys_dlopen_deplibs=unknown
519		;;
520		osf*)
521		# the two cases above should catch all versions of osf <= 5.1.  Read
522		# the comments above for what we know about them.
523		# At > 5.1, deplibs are loaded *and* any RPATH in a shared library
524	<	# is used to find them so we can finally say `yes'.
524	>	# is used to find them so we can finally say 'yes'.
525		lt_cv_sys_dlopen_deplibs=yes
526		;;
527		qnx*)
#	Line 532 | Line 535 | AC_CACHE_CHECK([whether deplibs are load
535		;;
536		esac
537		])
538	<	if test "$lt_cv_sys_dlopen_deplibs" != yes; then
538	>	if test yes != "$lt_cv_sys_dlopen_deplibs"; then
539		AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
540		[Define if the OS needs help to load dependent libraries for dlopen().])
541		fi
#	Line 548 | Line 551 | dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS
551		# -----------------
552		AC_DEFUN([LT_SYS_MODULE_EXT],
553		[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
554	<	AC_CACHE_CHECK([which extension is used for runtime loadable modules],
554	>	AC_CACHE_CHECK([what extension is used for runtime loadable modules],
555		[libltdl_cv_shlibext],
556		[
557		module=yes
#	Line 578 | Line 581 | dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])
581		# ------------------
582		AC_DEFUN([LT_SYS_MODULE_PATH],
583		[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
584	<	AC_CACHE_CHECK([which variable specifies run-time module search path],
585	<	[lt_cv_module_path_var], [lt_cv_module_path_var="$shlibpath_var"])
584	>	AC_CACHE_CHECK([what variable specifies run-time module search path],
585	>	[lt_cv_module_path_var], [lt_cv_module_path_var=$shlibpath_var])
586		if test -n "$lt_cv_module_path_var"; then
587		m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
588		AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
#	Line 599 | Line 602 | AC_DEFUN([LT_SYS_DLSEARCH_PATH],
602		[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
603		AC_CACHE_CHECK([for the default library search path],
604		[lt_cv_sys_dlsearch_path],
605	<	[lt_cv_sys_dlsearch_path="$sys_lib_dlsearch_path_spec"])
605	>	[lt_cv_sys_dlsearch_path=$sys_lib_dlsearch_path_spec])
606		if test -n "$lt_cv_sys_dlsearch_path"; then
607		sys_dlsearch_path=
608		for dir in $lt_cv_sys_dlsearch_path; do
609		if test -z "$sys_dlsearch_path"; then
610	<	sys_dlsearch_path="$dir"
610	>	sys_dlsearch_path=$dir
611		else
612	<	sys_dlsearch_path="$sys_dlsearch_path$PATH_SEPARATOR$dir"
612	>	sys_dlsearch_path=$sys_dlsearch_path$PATH_SEPARATOR$dir
613		fi
614		done
615		m4_pattern_allow([LT_DLSEARCH_PATH])dnl
#	Line 633 | Line 636 | AC_CACHE_CHECK([whether libtool supports
636		libltdl_cv_preloaded_symbols=no
637		fi
638		])
639	<	if test x"$libltdl_cv_preloaded_symbols" = xyes; then
639	>	if test yes = "$libltdl_cv_preloaded_symbols"; then
640		AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
641		[Define if libtool can extract symbol lists from object files.])
642		fi
#	Line 653 | Line 656 | LIBADD_DLOPEN=
656		AC_SEARCH_LIBS([dlopen], [dl],
657		[AC_DEFINE([HAVE_LIBDL], [1],
658		[Define if you have the libdl library or equivalent.])
659	<	if test "$ac_cv_search_dlopen" != "none required" ; then
660	<	LIBADD_DLOPEN="-ldl"
659	>	if test "$ac_cv_search_dlopen" != "none required"; then
660	>	LIBADD_DLOPEN=-ldl
661		fi
662	<	libltdl_cv_lib_dl_dlopen="yes"
662	>	libltdl_cv_lib_dl_dlopen=yes
663		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
664		[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
665		#  include <dlfcn.h>
#	Line 664 | Line 667 | AC_SEARCH_LIBS([dlopen], [dl],
667		]], [[dlopen(0, 0);]])],
668		[AC_DEFINE([HAVE_LIBDL], [1],
669		[Define if you have the libdl library or equivalent.])
670	<	libltdl_cv_func_dlopen="yes"
670	>	libltdl_cv_func_dlopen=yes
671		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
672		[AC_CHECK_LIB([svld], [dlopen],
673		[AC_DEFINE([HAVE_LIBDL], [1],
674		[Define if you have the libdl library or equivalent.])
675	<	LIBADD_DLOPEN="-lsvld" libltdl_cv_func_dlopen="yes"
675	>	LIBADD_DLOPEN=-lsvld libltdl_cv_func_dlopen=yes
676		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
677	<	if test x"$libltdl_cv_func_dlopen" = xyes || test x"$libltdl_cv_lib_dl_dlopen" = xyes
677	>	if test yes = "$libltdl_cv_func_dlopen" || test yes = "$libltdl_cv_lib_dl_dlopen"
678		then
679	<	lt_save_LIBS="$LIBS"
679	>	lt_save_LIBS=$LIBS
680		LIBS="$LIBS $LIBADD_DLOPEN"
681		AC_CHECK_FUNCS([dlerror])
682	<	LIBS="$lt_save_LIBS"
682	>	LIBS=$lt_save_LIBS
683		fi
684		AC_SUBST([LIBADD_DLOPEN])
685
#	Line 689 | Line 692 | AC_CHECK_FUNC([shl_load],
692		[AC_DEFINE([HAVE_SHL_LOAD], [1],
693		[Define if you have the shl_load function.])
694		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
695	<	LIBADD_SHL_LOAD="-ldld"])])
695	>	LIBADD_SHL_LOAD=-ldld])])
696		AC_SUBST([LIBADD_SHL_LOAD])
697
698		case $host_os in
#	Line 789 | Line 792 | dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], []
792		# --------------------
793		AC_DEFUN([LT_FUNC_DLSYM_USCORE],
794		[AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
795	<	if test x"$lt_cv_sys_symbol_underscore" = xyes; then
796	<	if test x"$libltdl_cv_func_dlopen" = xyes ||
797	<	test x"$libltdl_cv_lib_dl_dlopen" = xyes ; then
795	>	if test yes = "$lt_cv_sys_symbol_underscore"; then
796	>	if test yes = "$libltdl_cv_func_dlopen" ||
797	>	test yes = "$libltdl_cv_lib_dl_dlopen"; then
798		AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
799		[libltdl_cv_need_uscore],
800		[libltdl_cv_need_uscore=unknown
801	<	save_LIBS="$LIBS"
801	>	save_LIBS=$LIBS
802		LIBS="$LIBS $LIBADD_DLOPEN"
803		_LT_TRY_DLOPEN_SELF(
804		[libltdl_cv_need_uscore=no], [libltdl_cv_need_uscore=yes],
805		[],                          [libltdl_cv_need_uscore=cross])
806	<	LIBS="$save_LIBS"
806	>	LIBS=$save_LIBS
807		])
808		fi
809		fi
810
811	<	if test x"$libltdl_cv_need_uscore" = xyes; then
811	>	if test yes = "$libltdl_cv_need_uscore"; then
812		AC_DEFINE([NEED_USCORE], [1],
813		[Define if dlsym() requires a leading underscore in symbol names.])
814		fi

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