Added customization for make targets in 'build' and 'install' phases for CMakePackage (#2742)

* Added customization for make targets in 'build' and 'install' phases for CMakePackage

* Use rst in build system docs so that Sphinx generates nice API docs

* Allow AutotoolsPackages to be built in a different directory

* Flake8

* Fix missing import

* Allow configure to be located in different directory

* Update espressopp to use build targets

* Flake8

* Sphinx fix, lists must be a new paragraph

* Back out change that allowed a configure script in a different directory than build_directory

* Add missing deps, build in parallel

* Missing space for rst list

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

@@ -23,7 +23,6 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ##############################################################################
 from spack import *
-from os import environ
 
 
 class Zlib(AutotoolsPackage):
@@ -35,17 +34,13 @@ class Zlib(AutotoolsPackage):
 
     version('1.2.10', 'd9794246f853d15ce0fcbf79b9a3cf13')
     # author had this to say about 1.2.9....
-    # Due to the bug fixes, any installations of 1.2.9 should be immediately 
+    # Due to the bug fixes, any installations of 1.2.9 should be immediately
     # replaced with 1.2.10.
     version('1.2.8', '44d667c142d7cda120332623eab69f40')
 
     variant('pic', default=True,
             description='Produce position-independent code (for shared libs)')
 
-    def configure(self, spec, prefix):
-
-        if '+pic' in spec:
-            environ['CFLAGS'] = self.compiler.pic_flag
-
-        config_args = ['--prefix', prefix]
-        configure(*config_args)
+    def setup_environment(self, spack_env, run_env):
+        if '+pic' in self.spec:
+            spack_env.set('CFLAGS', self.compiler.pic_flag)