Massive conversion from Package to CMakePackage (#4975)

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

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class Gflags(Package):
+class Gflags(CMakePackage):
     """The gflags package contains a C++ library that implements
     commandline flags processing. It includes built-in support for
     standard types such as string and the ability to define flags
@@ -37,11 +37,7 @@ class Gflags(Package):
 
     version('2.1.2', 'ac432de923f9de1e9780b5254884599f')
 
-    depends_on('cmake', type='build')
+    depends_on('cmake@2.8.12:', type='build')
 
-    def install(self, spec, prefix):
-        cmake("-DCMAKE_INSTALL_PREFIX=" + prefix,
-              "-DBUILD_SHARED_LIBS=ON")
-        make()
-        make("test")
-        make("install")
+    def cmake_args(self):
+        return ['-DBUILD_SHARED_LIBS=ON']