Convert pixman to AutotoolsPackage (#4231)

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

@@ -26,7 +26,7 @@
 import sys
 
 
-class Pixman(Package):
+class Pixman(AutotoolsPackage):
     """The Pixman package contains a library that provides low-level
     pixel manipulation features such as image compositing and
     trapezoid rasterization."""
@@ -37,18 +37,16 @@ class Pixman(Package):
     version('0.34.0', 'e80ebae4da01e77f68744319f01d52a3')
     version('0.32.6', '3a30859719a41bd0f5cccffbfefdd4c2')
 
-    depends_on('pkg-config', type='build')
+    depends_on('pkg-config@0.9.0:', type='build')
     depends_on('libpng')
 
-    def install(self, spec, prefix):
-        config_args = ["--prefix=" + prefix,
-                       "--disable-gtk"]
+    def configure_args(self):
+        args = [
+            '--enable-libpng',
+            '--disable-gtk',
+        ]
 
-        if sys.platform == "darwin":
-            config_args.append("--disable-mmx")
+        if sys.platform == 'darwin':
+            args.append('--disable-mmx')
 
-        configure(*config_args)
-
-        make()
-        make('check')
-        make('install')
+        return args