libtool.eclass: elibtoolize: add ppc64le handling #580792

1) We faced unable read SONAME from ${lib} when emerge below packages
   platform               pacakge                 elibtoolized
   ppc64le                app-text/opensp         no
   ppc64le                dev-libs/expat          yes
   ppc64le                net-firewall/iptables   yes
   ppc64le                net-libs/libmnl         no
   ppc64le                sys-apps/acl            yes
   ppc64le                sys-apps/attr           yes
   ppc64le                sys-libs/gdbm           yes
   ppc64le                sys-process/procps      no

2) The problem is due to the wrong $LD="ld -m elf64ppc" when link.
 This patch sets $LD="ld -m elf64lppc" in m4/libtool.m4 on ppc64le.

URL: https://debbugs.gnu.org/23348

eclass/ELT-patches/ppc64le/2.4.2

@@ -0,0 +1,32 @@
+https://bugs.gentoo.org/580792
+https://bugs.gentoo.org/581314
+https://debbugs.gnu.org/23348
+
+this adds support for ppc64le to older versions.  most of this is upstream already.
+
+--- a/m4/libtool.m4
++++ b/m4/libtool.m4
+@@ -1329,6 +1329,9 @@
+ 	  ppc64-*linux*|powerpc64-*linux*)
+ 	    LD="${LD-ld} -m elf32ppclinux"
+ 	    ;;
++	  ppc64le-*linux*|powerpc64le-*linux*)
++	    LD="${LD-ld} -m elf32lppclinux"
++	    ;;
+ 	  s390x-*linux*)
+ 	    LD="${LD-ld} -m elf_s390"
+ 	    ;;
+@@ -1345,9 +1348,12 @@
+ 	  x86_64-*linux*)
+ 	    LD="${LD-ld} -m elf_x86_64"
+ 	    ;;
+-	  ppc*-*linux*|powerpc*-*linux*)
++	  powerpc-*linux*|powerpc64-*linux*)
+ 	    LD="${LD-ld} -m elf64ppc"
+ 	    ;;
++	  powerpcle-*linux*|powerpc64le-*linux*)
++	    LD="${LD-ld} -m elf64lppc"
++	    ;;
+ 	  s390*-*linux*|s390*-*tpf*)
+ 	    LD="${LD-ld} -m elf64_s390"
+ 	    ;;

eclass/ELT-patches/ppc64le/2.4.4

@@ -0,0 +1,21 @@
+https://bugs.gentoo.org/580792
+https://bugs.gentoo.org/581314
+https://debbugs.gnu.org/23348
+
+this fixes ppc64le handling in newer libtool versions
+
+--- a/m4/libtool.m4
++++ b/m4/libtool.m4
+@@ -1386,10 +1386,10 @@
+ 	  x86_64-*linux*)
+ 	    LD="${LD-ld} -m elf_x86_64"
+ 	    ;;
+-	  powerpcle-*linux*)
++	  powerpcle-*linux*|powerpc64le-*linux*)
+ 	    LD="${LD-ld} -m elf64lppc"
+ 	    ;;
+-	  powerpc-*linux*)
++	  powerpc-*linux*|powerpc64-*linux*)
+ 	    LD="${LD-ld} -m elf64ppc"
+ 	    ;;
+ 	  s390*-*linux*|s390*-*tpf*)

eclass/libtool.eclass

@@ -144,7 +144,7 @@ elibtoolize() {
 	local deptoremove=
 	local do_shallow="no"
 	local force="false"
-	local elt_patches="install-sh ltmain portage relink max_cmd_len sed test tmp cross as-needed target-nm"
+	local elt_patches="install-sh ltmain portage relink max_cmd_len sed test tmp cross as-needed target-nm ppc64le"
 
 	for x in "$@" ; do
 		case ${x} in
@@ -417,6 +417,10 @@ elibtoolize() {
 					ELT_walk_patches "${d}/configure" "${p}"
 					ret=$?
 					;;
+				ppc64le)
+					ELT_walk_patches "${d}/configure" "${p}"
+					ret=$?
+					;;
 				*)
 					# ltmain.sh patches are applied above
 					;;