add boost dependency to stat package (#13735)

var/spack/repos/builtin/packages/stat/package.py

@@ -49,6 +49,7 @@ class Stat(AutotoolsPackage):
     depends_on('py-xdot', when='@4.0.1:')
     depends_on('swig')
     depends_on('mpi', when='+examples')
+    depends_on('boost')
 
     patch('configure_mpicxx.patch', when='@2.1.0')
 
@@ -60,6 +61,7 @@ def configure_args(self):
             "--with-graphlib=%s"    % spec['graphlib'].prefix,
             "--with-stackwalker=%s" % spec['dyninst'].prefix,
             "--with-python=%s"      % spec['python'].command.path,
+            "--with-boost=%s"       % spec['boost'].prefix,
         ]
         if '+fgfs' in spec:
             args.append('--with-fgfs=%s'