diff --git a/configure b/configure
index b77a8a8..e52609f 100755
--- a/configure
+++ b/configure
@@ -188,6 +188,12 @@ if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
   *BSD | *bsd* | DragonFly)
         LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
         LDCONFIG="ldconfig -m" ;;
+  pnacl)
+        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
+        EXE='.pexe' ;;
+  nacl)
+        LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
+        EXE='.nexe' ;;
   CYGWIN* | Cygwin* | cygwin* | OS/2*)
         EXE='.exe' ;;
   MINGW* | mingw*)