Refactor distutils script to display information about the extensions

being built.  Use pkg-config to find freetype if possible.

svn path=/trunk/matplotlib/; revision=3646

setup.cfg

@@ -1,2 +1,7 @@
 [egg_info]
 tag_svn_revision = 1
+
+[status]
+# To suppress display of the dependencies and their versions
+# at the top of the build log, uncomment the following line:
+# suppress = 1

setup.py

@@ -35,7 +35,7 @@
 
 # build wxPython extension code to efficiently blit agg into wx.  Only
 # needed for wxpython <2.8 if you plan on doing animations
-BUILD_WXAGG        = 0
+BUILD_WXAGG        = 1
 
 
 # build a small extension to manage the focus on win32 platforms.
@@ -71,18 +71,57 @@
 setuptools requirement, you must delete the old matplotlib install
 directory.""")
 
+if major==2 and minor1<3 or major<2:
+    raise SystemExit("""matplotlib requires Python 2.3 or later.""")
+
 import glob
 from distutils.core import setup
 from setupext import build_agg, build_gtkagg, build_tkagg, build_wxagg,\
      build_ft2font, build_image, build_windowing, build_transforms, \
      build_contour, build_nxutils, build_enthought, build_swigagg, build_gdk, \
-     build_subprocess, build_ttconv
+     build_subprocess, build_ttconv, print_line, print_status, print_message, \
+     print_raw, check_for_freetype, check_for_libpng, check_for_gtk, check_for_tk, \
+     check_for_wx, check_for_numpy, check_for_qt, check_for_qt4, check_for_cairo
 #import distutils.sysconfig
 
+# jdh
+packages = [
+    'matplotlib',
+    'matplotlib.backends',
+    'matplotlib.toolkits',
+    'matplotlib.numerix',
+    'matplotlib.numerix.mlab',
+    'matplotlib.numerix.ma',
+    'matplotlib.numerix.npyma',
+    'matplotlib.numerix.linear_algebra',
+    'matplotlib.numerix.random_array',
+    'matplotlib.numerix.fft',
+    'matplotlib.config'
+    ]
+
+ext_modules = []
+
+# these are not optional
+BUILD_FT2FONT = 1
+BUILD_TTCONV  = 1
+BUILD_CONTOUR = 1
+BUILD_NXUTILS = 1
+
 for line in file('lib/matplotlib/__init__.py').readlines():
-    if line[:11] == '__version__':
+    if (line.startswith('__version__') or
+        line.startswith('__revision__') or
+        line.startswith('__date__')):
         exec(line.strip())
 
+print_line()
+print_raw("BUILDING MATPLOTLIB")
+print_status('matplotlib', '%s (r%s)' % (__version__, __revision__.split()[-2]))
+print_status('platform', sys.platform)
+if sys.platform == 'win32':
+    print_status('Windows version', sys.getwindowsversion())
+print_raw("")
+print_raw("REQUIRED DEPENDENCIES")
+
 # Specify all the required mpl data
 package_data = {'matplotlib':['mpl-data/fonts/afm/*.afm',
                               'mpl-data/fonts/pdfcorefonts/*.afm',
@@ -98,43 +137,19 @@
                               'backends/Matplotlib.nib/*',
                               ]}
 
+if not check_for_numpy():
+    sys.exit()
+
 # The NUMERIX variable (a list) is left over from the days when it had
 # a string for each of the supported backends. Now there is only one
 # supported backend, so this approach could (should?) get changed for
 # simplicity.
 
-try:
-     import numpy
-     NUMERIX = ['numpy']
-except ImportError:
-    raise RuntimeError("You must install numpy to build matplotlib")
+import numpy
+NUMERIX = ['numpy']
 
 rc['numerix'] = NUMERIX[-1]
 
-ext_modules = []
-
-# these are not optional
-BUILD_FT2FONT = 1
-BUILD_TTCONV  = 1
-BUILD_CONTOUR = 1
-BUILD_NXUTILS = 1
-
-# jdh
-packages = [
-    'matplotlib',
-    'matplotlib.backends',
-    'matplotlib.toolkits',
-    'matplotlib.numerix',
-    'matplotlib.numerix.mlab',
-    'matplotlib.numerix.ma',
-    'matplotlib.numerix.npyma',
-    'matplotlib.numerix.linear_algebra',
-    'matplotlib.numerix.random_array',
-    'matplotlib.numerix.fft',
-    'matplotlib.config'
-    ]
-
-
 try: import subprocess
 except ImportError: havesubprocess = False
 else: havesubprocess = True
@@ -146,12 +161,28 @@
     subprocess_dir = os.path.dirname(subprocess.__file__)
     if subprocess_dir.endswith('.egg/subprocess'):
         havesubprocess = False
-
+        
 if not havesubprocess:
     packages.append('subprocess')
     if sys.platform == 'win32':
         build_subprocess(ext_modules, packages)
 
+if not check_for_freetype():
+    sys.exit(1)
+
+if BUILD_FT2FONT:
+    build_ft2font(ext_modules, packages)
+
+if BUILD_TTCONV:
+    build_ttconv(ext_modules, packages)
+
+if 1:  # I don't think we need to make these optional
+    build_contour(ext_modules, packages)
+    build_nxutils(ext_modules, packages)
+
+print_raw("")
+print_raw("OPTIONAL DEPENDENCIES")
+
 try: import datetime
 except ImportError: havedate = False
 else: havedate = True
@@ -174,114 +205,69 @@ def add_dateutil():
         add_dateutil()
     else:
         # only add them if we need them
-        try: import dateutil
-        except ImportError:
-            add_dateutil()
 
-        try: import pytz
+        try:
+            import pytz
         except ImportError:
             add_pytz()
 
+        try:
+            import dateutil
+        except ImportError:
+            add_dateutil()
+
 build_swigagg(ext_modules, packages)
 build_transforms(ext_modules, packages)
 build_enthought(ext_modules, packages)
 
-def havegtk():
-    'check for the presence of pygtk'
-    if havegtk.gotit is not None: return havegtk.gotit
-    try:
-        import gtk
-    except ImportError:
-        print 'building for GTK requires pygtk; you must be able to "import gtk" in your build/install environment'
-        havegtk.gotit = False
-    except RuntimeError:
-        print 'pygtk present but import failed'
-        havegtk.gotit = False
-    else:
-        version = (2,2,0)
-        if gtk.pygtk_version < version:
-            print "Error: GTK backend requires PyGTK %d.%d.%d (or later), " \
-                  "%d.%d.%d was detected." % (
-                version + gtk.pygtk_version)
-            havegtk.gotit = False
-        else:
-            havegtk.gotit = True
-    return havegtk.gotit
-
-havegtk.gotit = None
-
-if BUILD_GTK and havegtk():
-    build_gdk(ext_modules, packages)
-    rc['backend'] = 'GTK'
-
-if BUILD_GTKAGG and havegtk():
+if check_for_gtk() and (BUILD_GTK or BUILD_GTKAGG):
+    if BUILD_GTK:
+        build_gdk(ext_modules, packages)
+        rc['backend'] = 'GTK'
+    if BUILD_GTKAGG:
+        BUILD_AGG = 1
+        build_gtkagg(ext_modules, packages)
+        rc['backend'] = 'GTKAgg'
+
+if check_for_tk() and BUILD_TKAGG:
     BUILD_AGG = 1
-    build_gtkagg(ext_modules, packages)
-    rc['backend'] = 'GTKAgg'
+    build_tkagg(ext_modules, packages)
+    rc['backend'] = 'TkAgg'
 
-if BUILD_TKAGG:
-    try:
-        import Tkinter
-    except ImportError:
-        print 'TKAgg requires TkInter'
-        BUILD_TKAGG = 0
-    except RuntimeError:
-        print 'Tkinter present but import failed'
-        BUILD_TKAGG = 0
-    else:
-        try:
-            tk = Tkinter.Tk()
-            tk.withdraw()
-        except Tkinter.TclError:
-            print 'Tkinter present, but window failed to open'
-            BUILD_TKAGG = 0
-        else:
-            BUILD_AGG = 1
-            build_tkagg(ext_modules, packages)
-            rc['backend'] = 'TkAgg'
-
-if BUILD_WXAGG:
-    try:
-        import wx
-    except ImportError:
-        if BUILD_WXAGG != 'auto':
-            print 'WXAgg\'s accelerator requires wxPython'
-        BUILD_WXAGG = 0
+explanation = None
+if check_for_wx() and BUILD_WXAGG:
+    BUILD_AGG = 1
+    import wx
+    if wx.__version__ < (2.8):
+        build_wxagg(ext_modules, packages)
+        wxagg_backend_status = "yes"
     else:
-        if getattr(wx, '__version__', '0.0')[0:3] < '2.8':
-            BUILD_AGG = 1
-            build_wxagg(ext_modules, packages,
-                not (isinstance(BUILD_WXAGG, str) # don't abort if BUILD_WXAGG
-                     and BUILD_WXAGG.lower() == 'auto')) # is "auto"
-        rc['backend'] = 'WXAgg'
-
-if BUILD_AGG:
+        print_message("WxAgg extension not required for wxPython < 2.8")
+    rc['backend'] = 'WXAgg'
+
+# These are informational only.  We don't build
+# any extensions for them.
+check_for_qt()
+check_for_qt4()
+check_for_cairo()
+
+if check_for_libpng() and BUILD_AGG:
     build_agg(ext_modules, packages)
     if rc['backend'] == 'PS': rc['backend'] = 'Agg'
 
-
-
-if BUILD_FT2FONT:
-    build_ft2font(ext_modules, packages)
-
-if BUILD_TTCONV:
-    build_ttconv(ext_modules, packages)
-
 if BUILD_WINDOWING and sys.platform=='win32':
    build_windowing(ext_modules, packages)
 
 if BUILD_IMAGE:
     build_image(ext_modules, packages)
 
-if 1:  # I don't think we need to make these optional
-    build_contour(ext_modules, packages)
-    build_nxutils(ext_modules, packages)
-
 for mod in ext_modules:
     if VERBOSE:
         mod.extra_compile_args.append('-DVERBOSE')
 
-
+print_raw("")
+print_raw("[Edit setup.cfg to suppress the above messages]")
+print_line()
 
 # packagers: set rc['numerix'] and rc['backend'] here to override the auto
 # defaults, eg