libltdl: embed libltdl from Libtool 2.4.2

Commit a copy of libltdl from Libtool 2.4.2 in the Open MPI source
tree because later versions of Libtool broke the embed-libltdl
functionality.

.gitignore

@@ -291,8 +291,6 @@ ompi/tools/wrappers/mpicxx-wrapper-data.txt
 ompi/tools/wrappers/mpif77-wrapper-data.txt
 ompi/tools/wrappers/mpif90-wrapper-data.txt
 
-opal/libltdl
-
 opal/asm/atomic-asm.S
 opal/asm/atomic-test
 opal/asm/generated/atomic-*.s

opal/libltdl/Makefile.am

@@ -0,0 +1,164 @@
+## Makefile.am -- Process this file with automake to produce Makefile.in
+##
+##   Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+##   Written by Gary V. Vaughan, 2003
+##
+##   NOTE: The canonical source of this file is maintained with the
+##   GNU Libtool package.  Report bugs to [email protected].
+##
+## GNU Libltdl is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2 of the License, or (at your option) any later version.
+##
+## As a special exception to the GNU Lesser General Public License,
+## if you distribute this file as part of a program or library that
+## is built using GNU libtool, you may include this file under the
+## same distribution terms that you use for the rest of that program.
+##
+## GNU Libltdl is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU Lesser General Public License for more details.
+##
+## You should have received a copy of the GNU LesserGeneral Public
+## License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
+## copy can be downloaded from http://www.gnu.org/licenses/lgpl.html,
+## or obtained by writing to the Free Software Foundation, Inc.,
+## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#####
+
+ACLOCAL_AMFLAGS = -I m4
+AUTOMAKE_OPTIONS = foreign
+AM_CPPFLAGS =
+AM_LDFLAGS =
+BUILT_SOURCES =
+include_HEADERS =
+noinst_LTLIBRARIES =
+lib_LTLIBRARIES =
+EXTRA_LTLIBRARIES =
+EXTRA_DIST =
+CLEANFILES =
+MOSTLYCLEANFILES =
+
+# -I$(srcdir) is needed for user that built libltdl with a sub-Automake
+# (not as a sub-package!) using 'nostdinc':
+AM_CPPFLAGS	       += -DLT_CONFIG_H='<$(LT_CONFIG_H)>' \
+			  -DLTDL -I. -I$(srcdir) -Ilibltdl \
+			  -I$(srcdir)/libltdl -I$(srcdir)/libltdl
+AM_LDFLAGS	       += -no-undefined
+LTDL_VERSION_INFO	= -version-info 10:0:3
+
+noinst_LTLIBRARIES	+= $(LT_DLLOADERS)
+
+if INSTALL_LTDL
+ltdlincludedir		= $(includedir)/libltdl
+ltdlinclude_HEADERS	= libltdl/lt_system.h \
+			  libltdl/lt_error.h \
+			  libltdl/lt_dlloader.h
+include_HEADERS	       += ltdl.h
+lib_LTLIBRARIES	       += libltdl.la
+endif
+
+if CONVENIENCE_LTDL
+noinst_LTLIBRARIES     += libltdlc.la
+endif
+
+libltdl_la_SOURCES = libltdl/lt__alloc.h \
+			  libltdl/lt__dirent.h \
+			  libltdl/lt__glibc.h \
+			  libltdl/lt__private.h \
+			  libltdl/lt__strl.h \
+			  libltdl/lt_dlloader.h \
+			  libltdl/lt_error.h \
+	                  libltdl/lt_system.h \
+			  libltdl/slist.h \
+			  loaders/preopen.c \
+			  lt__alloc.c \
+			  lt_dlloader.c \
+			  lt_error.c \
+			  ltdl.c \
+			  ltdl.h \
+			  slist.c
+
+EXTRA_DIST	       += lt__dirent.c \
+			  lt__strl.c
+
+libltdl_la_CPPFLAGS	= -DLTDLOPEN=$(LTDLOPEN) $(AM_CPPFLAGS)
+libltdl_la_LDFLAGS	= $(AM_LDFLAGS) $(LTDL_VERSION_INFO) $(LT_DLPREOPEN)
+libltdl_la_LIBADD	= $(LTLIBOBJS)
+libltdl_la_DEPENDENCIES	= $(LT_DLLOADERS) $(LTLIBOBJS)
+
+libltdlc_la_SOURCES	= $(libltdl_la_SOURCES)
+libltdlc_la_CPPFLAGS	= -DLTDLOPEN=$(LTDLOPEN)c $(AM_CPPFLAGS)
+libltdlc_la_LDFLAGS	= $(AM_LDFLAGS) $(LT_DLPREOPEN)
+libltdlc_la_LIBADD	= $(libltdl_la_LIBADD)
+libltdlc_la_DEPENDENCIES= $(libltdl_la_DEPENDENCIES)
+
+## The loaders are preopened by libltdl, itself always built from
+## pic-objects (either as a shared library, or a convenience library),
+## so the loaders themselves must be made from pic-objects too.  We
+## use convenience libraries for that purpose:
+EXTRA_LTLIBRARIES	       += dlopen.la \
+				  dld_link.la \
+				  dyld.la \
+				  load_add_on.la \
+				  loadlibrary.la \
+				  shl_load.la
+
+dlopen_la_SOURCES	= loaders/dlopen.c
+dlopen_la_LDFLAGS	= -module -avoid-version
+dlopen_la_LIBADD 	= $(LIBADD_DLOPEN)
+
+dld_link_la_SOURCES	= loaders/dld_link.c
+dld_link_la_LDFLAGS	= -module -avoid-version
+dld_link_la_LIBADD	= -ldld
+
+dyld_la_SOURCES		= loaders/dyld.c
+dyld_la_LDFLAGS		= -module -avoid-version
+
+load_add_on_la_SOURCES	= loaders/load_add_on.c
+load_add_on_la_LDFLAGS	= -module -avoid-version
+
+loadlibrary_la_SOURCES	= loaders/loadlibrary.c
+loadlibrary_la_LDFLAGS	= -module -avoid-version
+
+shl_load_la_SOURCES	= loaders/shl_load.c
+shl_load_la_LDFLAGS	= -module -avoid-version
+shl_load_la_LIBADD	= $(LIBADD_SHL_LOAD)
+
+## Make sure these will be cleaned even when they're not built by default:
+CLEANFILES		       += libltdl.la \
+				  libltdlc.la \
+				  libdlloader.la
+
+## Automake-1.9.6 doesn't clean subdir AC_LIBOBJ compiled objects
+## automatically:
+CLEANFILES	       += $(LIBOBJS) $(LTLIBOBJS)
+
+EXTRA_DIST	       += COPYING.LIB \
+			  configure.ac \
+			  Makefile.am \
+			  aclocal.m4 \
+			  Makefile.in \
+			  configure \
+			  config-h.in \
+			  README
+
+## --------------------------- ##
+## Gnulib Makefile.am snippets ##
+## --------------------------- ##
+
+BUILT_SOURCES	+= $(ARGZ_H)
+EXTRA_DIST	+= argz_.h \
+		   argz.c
+
+# We need the following in order to create an <argz.h> when the system
+# doesn't have one that works with the given compiler.
+all-local $(lib_OBJECTS): $(ARGZ_H)
+argz.h: argz_.h
+	$(mkinstalldirs) . 
+	cp $(srcdir)/argz_.h $@-t
+	mv $@-t $@
+MOSTLYCLEANFILES += argz.h \
+		    argz.h-t

opal/libltdl/README

@@ -0,0 +1,20 @@
+This is GNU libltdl, a system independent dlopen wrapper for GNU libtool.
+
+It supports the following dlopen interfaces:
+* dlopen (POSIX)
+* shl_load (HP-UX)
+* LoadLibrary (Win16 and Win32)
+* load_add_on (BeOS)
+* GNU DLD (emulates dynamic linking for static libraries)
+* dyld (darwin/Mac OS X)
+* libtool's dlpreopen
+--
+   Copyright (C) 1999, 2003, 2011 Free Software Foundation, Inc.
+   Written by Thomas Tanner, 1999
+
+   This file is part of GNU Libtool.
+
+Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved.  This file is offered as-is,
+without warranty of any kind.