diff --git a/setup.py b/setup.py
index 98d482738..a250c2d9c 100755
--- a/setup.py
+++ b/setup.py
@@ -358,8 +358,10 @@ class pil_build_ext(build_ext):
                     'aarch64': ["/usr/lib64", "/usr/lib/aarch64-linux-gnu"],
                     'arm':     ["/usr/lib/arm-linux-gnueabi"],
                     'armv71':  ["/usr/lib/arm-linux-gnueabi"],
+                    'armv7l':  ["/usr/lib"],
                     'ppc64':   ["/usr/lib64", "/usr/lib/ppc64-linux-gnu",
                                 "/usr/lib/powerpc64-linux-gnu"],
+                    'ppc64le':   ["/usr/lib64"],
                     'ppc':     ["/usr/lib/ppc-linux-gnu",
                                 "/usr/lib/powerpc-linux-gnu"],
                     's390x':   ["/usr/lib64", "/usr/lib/s390x-linux-gnu"],
@@ -368,7 +370,7 @@ class pil_build_ext(build_ext):
 
                 for platform_ in arch_tp:
                     dirs = libdirs.get(platform_, None)
-                    if not platform_:
+                    if not dirs:
                         continue
                     for path in dirs:
                         _add_directory(library_dirs, path)