@@ -, +, @@ 
    AX_BOOST_BASE: Bugfix: PPC has a longer canonical CPU name
--- a/m4/ax_boost_base.m4	
+++ a/m4/ax_boost_base.m4	
@@ -113,7 +113,7 @@ AC_DEFUN([_AX_BOOST_BASE_RUNDETECT],[
     dnl are found, e.g. when only header-only libraries are installed!
     AS_CASE([${host_cpu}],
       [x86_64],[libsubdirs="lib64 libx32 lib lib64"],
-      [ppc64|s390x|sparc64|aarch64|ppc64le],[libsubdirs="lib64 lib lib64"],
+      [powerpc64|s390x|sparc64|aarch64|powerpc64le],[libsubdirs="lib64 lib lib64"],
       [libsubdirs="lib"]
     )