Fileutils successfully finds libarchive; can't find dtcmp despite config arg.

var/spack/packages/fileutils/package.py

@@ -8,7 +8,7 @@ class Fileutils(Package):
     homepage = "https://github.com/hpc/fileutils"
     url      = "https://github.com/hpc/fileutils/releases/download/v0.0.1-alpha.4/fileutils-0.0.1-alpha.4.tar.gz"
 
-    version('0.0.1-alpha.4', 'a01dbe5a2e03f3c70c7a98ec0a2554e1')
+    version('0.0.1-alpha.4', 'e37b48ea43c95f5a1ede0ee01019ae58')
 
     depends_on('mpi')
     depends_on('libcircle')
@@ -17,6 +17,6 @@ class Fileutils(Package):
 
     def install(self, spec, prefix):
         configure("--prefix=" + prefix,
-                  "--with-libdtcmp=" + spec['dtcmp'].prefix)
+                  "--with-dtcmp=" + spec['dtcmp'].prefix)
         make()
         make("install")