Qt5 webkit requires gperf

var/spack/packages/gperf/package.py

@@ -0,0 +1,19 @@
+from spack import *
+
+class Gperf(Package):
+    """GNU gperf is a perfect hash function generator. For a given
+    list of strings, it produces a hash function and hash table, in
+    form of C or C++ code, for looking up a value depending on the
+    input string. The hash function is perfect, which means that the
+    hash table has no collisions, and the hash table lookup needs a
+    single string comparison only."""
+
+    homepage = "https://www.gnu.org/software/gperf/"
+    url      = "http://ftp.gnu.org/pub/gnu/gperf/gperf-3.0.4.tar.gz"
+
+    version('3.0.4', 'c1f1db32fb6598d6a93e6e88796a8632')
+
+    def install(self, spec, prefix):
+        configure("--prefix=%s" % prefix)
+        make()
+        make("install")