Please consider the following patch to enable the ppc64le arch and speex.  This patch is very similar to aarch:

This is just for config.guess:


--- speex-1.2rc1/config.guess	2013-11-05 15:57:43.000000000 +0100
+++ speex-1.2rc1/config.guess.new	2013-11-05 15:57:30.000000000 +0100
@@ -979,6 +979,9 @@ EOF
     ppc64:Linux:*:*)
 	echo powerpc64-unknown-linux-gnu
 	exit ;;
+    ppc64le:Linux:*:*)
+        echo powerpc64le-unknown-linux-gnu
+        exit ;;
     ppc:Linux:*:*)
 	echo powerpc-unknown-linux-gnu
 	exit ;;

And for the speex.spec:
diff --git a/speex.spec b/speex.spec
index cf8495b..e843968 100644
--- a/speex.spec
+++ b/speex.spec
@@ -10,6 +10,7 @@ Source0:	http://downloads.xiph.org/releases/speex/%{name}-%{version}%{rc_ver}.ta
 BuildRequires:	libogg-devel
 # update config.guess and config.sub for aarch64
 Patch1:		speex-aarch64.patch
+Patch2:         speex-ppc64le.patch
 
 %description
 Speex is a patent-free compression format designed especially for
@@ -40,6 +41,7 @@ speech. This package contains tools files and user's manual for %{name}.
 %prep
 %setup -q -n %{name}-%{version}%{rc_ver}
 %patch1 -p1 -b .aarch64
+%patch2 -p1 -b .ppc64le
 
 %build
 %configure --disable-static