Add cross/libtool-base package (cross-libtool-base-${MACHINE_ARCH}).

This is a provisional kludge to enable cross-compilation of packages
using libtool.  It requires manual intervention: you must build it as
a target package, and then install the target package on the host
with `pkg_add -m ${TARGET_ARCH}'.

Index: cross/libtool-base/DESCR
===================================================================
RCS file: cross/libtool-base/DESCR
diff -N cross/libtool-base/DESCR
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ cross/libtool-base/DESCR	23 Apr 2013 13:29:14 -0000
@@ -0,0 +1,10 @@
+This is GNU Libtool, a generic library support script.  Libtool hides
+the complexity of using shared libraries behind a consistent, portable
+interface.
+
+To use libtool, add the new generic library building commands to your
+Makefile, Makefile.in, or Makefile.am.
+
+This package includes the libtool script and support files.
+
+This is the cross-compilation version of libtool.
Index: cross/libtool-base/Makefile
===================================================================
RCS file: cross/libtool-base/Makefile
diff -N cross/libtool-base/Makefile
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ cross/libtool-base/Makefile	23 Apr 2013 13:29:14 -0000
@@ -0,0 +1,94 @@
+# copypasta from devel/libtool-base/Makefile, tweaked slightly
+
+# $NetBSD: Makefile,v 1.98 2012/07/26 12:04:04 bsiegert Exp $
+
+###########################################################################
+###########################################################################
+#
+# HEADS UP!  DO NOT CHANGE THE VERSION OR PKGREVISION WITHOUT READING THIS:
+#
+###########################################################################
+###########################################################################
+#
+# This package is maintained specially in order to preserve pkgsrc
+# specific OS changes that diverge from the "out of the box" libtool.
+# In order to keep this package in a maintainable condition, the .m4 files
+# must be manipulated in order to generate the patch-* files.
+#
+# See devel/libtool/patches/manual.README for instructions on how to make
+# these patch files properly; otherwise your changes WILL be lost on the
+# next libtool update.
+#
+# DO NOT MAKE CHANGES TO patch-ab OR patch-ad WITHOUT FOLLOWING THESE
+# INSTRUCTIONS.  There are no exceptions to this rule.
+#
+###########################################################################
+###########################################################################
+
+.include "../../devel/libtool/Makefile.common"
+
+# [TRC 20130325: Tweak for cross-build.]
+PKGNAME=	${DISTNAME:S/^libtool-/cross-libtool-base-${MACHINE_ARCH}-/}
+SVR4_PKGNAME=	ltoob
+
+COMMENT=	Generic shared library support script (the script itself)
+
+CONFLICTS+=	libtool<=1.3.5nb11
+
+# [TRC 20130325: Set for cross-build.]
+USE_CROSSBASE=	yes
+
+TEST_TARGET=	check
+
+OVERRIDE_DIRDEPTH.install-sh=	1
+
+.if ${OPSYS} == "AIX"
+
+# always build libraries and executables that use the runtime linker.
+# in addition, disable libtool locking, as the test is broken on AIX,
+# and results in files being locked indefinitely.
+LDFLAGS+=		-Wl,-brtl
+CONFIGURE_ARGS+=	--disable-libtool-lock
+
+.elif ${OPSYS} == "IRIX"
+
+# The MIPSpro compiler doesn't support -c with -o, but the locking
+# workaround is itself broken.  Disable it unconditionally.
+CONFIGURE_ARGS+=	--disable-libtool-lock
+
+.elif ${OPSYS} == "SunOS"
+CFLAGS+=	${_COMPILER_ABI_FLAG.${ABI}}
+.endif
+
+# We are going to want libtool to find the same versions of the C, C++,
+# and Fortran compilers.
+#
+USE_LANGUAGES=		c c++ fortran77
+CONFIGURE_ARGS+=	--disable-ltdl-install
+
+USE_TOOLS+=		echo
+
+.PHONY: fix-libtool
+fix-libtool:
+	cd ${WRKSRC}; for f in libtool; do				\
+		${SED}	-e "s,-L${BUILDLINK_DIR}/lib,," $$f > $$f.new;	\
+		if [ -x $$f ]; then ${CHMOD} +x $$f.new; fi;		\
+		${MV} -f $$f.new $$f;					\
+	done
+
+post-build: fix-libtool
+
+# [TRC 20130325: Hack for cross-build.]
+FILESDIR=	../../devel/libtool-base/files
+post-build:
+	@${SED}	-e "s|@PREFIX@|"${PREFIX:Q}"|g"				\
+		-e "s|@SH@|"${SH:Q}"|g"					\
+		${FILESDIR}/shlibtool.in > ${WRKSRC}/shlibtool
+
+post-install:
+	${INSTALL_SCRIPT} ${WRKSRC}/shlibtool ${DESTDIR}${PREFIX}/bin/shlibtool
+
+BUILDLINK_DEPMETHOD.dlcompat=	build
+
+.include "../../mk/dlopen.buildlink3.mk"
+.include "../../mk/bsd.pkg.mk"
Index: cross/libtool-base/PLIST
===================================================================
RCS file: cross/libtool-base/PLIST
diff -N cross/libtool-base/PLIST
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ cross/libtool-base/PLIST	23 Apr 2013 13:29:14 -0000
@@ -0,0 +1,55 @@
+@comment $NetBSD$
+bin/libtool
+bin/libtoolize
+bin/shlibtool
+man/man1/libtool.1
+man/man1/libtoolize.1
+share/aclocal/argz.m4
+share/aclocal/libtool.m4
+share/aclocal/ltdl.m4
+share/aclocal/ltoptions.m4
+share/aclocal/ltsugar.m4
+share/aclocal/ltversion.m4
+share/aclocal/lt~obsolete.m4
+share/libtool/config/compile
+share/libtool/config/config.guess
+share/libtool/config/config.sub
+share/libtool/config/depcomp
+share/libtool/config/install-sh
+share/libtool/config/ltmain.sh
+share/libtool/config/missing
+share/libtool/libltdl/COPYING.LIB
+share/libtool/libltdl/Makefile.am
+share/libtool/libltdl/Makefile.in
+share/libtool/libltdl/Makefile.inc
+share/libtool/libltdl/README
+share/libtool/libltdl/aclocal.m4
+share/libtool/libltdl/argz.c
+share/libtool/libltdl/argz_.h
+share/libtool/libltdl/config-h.in
+share/libtool/libltdl/configure
+share/libtool/libltdl/configure.ac
+share/libtool/libltdl/libltdl/lt__alloc.h
+share/libtool/libltdl/libltdl/lt__dirent.h
+share/libtool/libltdl/libltdl/lt__glibc.h
+share/libtool/libltdl/libltdl/lt__private.h
+share/libtool/libltdl/libltdl/lt__strl.h
+share/libtool/libltdl/libltdl/lt_dlloader.h
+share/libtool/libltdl/libltdl/lt_error.h
+share/libtool/libltdl/libltdl/lt_system.h
+share/libtool/libltdl/libltdl/slist.h
+share/libtool/libltdl/loaders/dld_link.c
+share/libtool/libltdl/loaders/dlopen.c
+share/libtool/libltdl/loaders/dyld.c
+share/libtool/libltdl/loaders/load_add_on.c
+share/libtool/libltdl/loaders/loadlibrary.c
+share/libtool/libltdl/loaders/preopen.c
+share/libtool/libltdl/loaders/shl_load.c
+share/libtool/libltdl/lt__alloc.c
+share/libtool/libltdl/lt__dirent.c
+share/libtool/libltdl/lt__strl.c
+share/libtool/libltdl/lt_dlloader.c
+share/libtool/libltdl/lt_error.c
+share/libtool/libltdl/ltdl.c
+share/libtool/libltdl/ltdl.h
+share/libtool/libltdl/slist.c
Index: devel/libtool/Makefile.common
===================================================================
RCS file: /cvsroot/pkgsrc/devel/libtool/Makefile.common,v
retrieving revision 1.79
diff -p -u -r1.79 Makefile.common
--- devel/libtool/Makefile.common	12 Apr 2013 13:44:08 -0000	1.79
+++ devel/libtool/Makefile.common	23 Apr 2013 13:29:15 -0000
@@ -41,8 +41,8 @@ PKG_INSTALLATION_TYPES=	overwrite pkgvie
 
 GNU_CONFIGURE=	yes
 
-DISTINFO_FILE=	${.CURDIR}/../libtool/distinfo
-PATCHDIR=	${.CURDIR}/../libtool/patches
+DISTINFO_FILE=	${.CURDIR}/../../devel/libtool/distinfo
+PATCHDIR=	${.CURDIR}/../../devel/libtool/patches
 
 AUTOMAKE_OVERRIDE=	NO
 
@@ -60,12 +60,15 @@ CONFIGURE_ENV+=		lt_cv_path_LD=${LD:Q}
 CONFIGURE_ENV+=		lt_cv_path_SED=${SED:Q}
 
 # The configure script doesn't seem to be working out the need for -p
-# or -B, so tell it
+# or -B, so tell it.  For cross-compilation, force it to use the normal
+# NM and not the one in ${BUILDLINK_DIR}.
 #
 .if ${OPSYS} == "SunOS" || ${OPSYS} == "HPUX"
 CONFIGURE_ENV+=		lt_cv_path_NM="nm -p"
 .elif ${OPSYS} == "IRIX" || ${OPSYS} == "OSF1"
 CONFIGURE_ENV+=		lt_cv_path_NM="nm -B"
+.else
+CONFIGURE_ENV+=		lt_cv_path_NM=${NM:Q}
 .endif
 
 CONFIGURE_ENV+=		RANLIB=${RANLIB:Q}