scons: conditionally add CXXFLAGS for headers needing Cairo support

SConstruct

@@ -331,7 +331,9 @@ pickle_store = [# Scons internal variables
         'PYTHON_SYS_PREFIX',
         'COLOR_PRINT',
         'HAS_BOOST_SYSTEM',
-        'SVN_REVISION'
+        'SVN_REVISION',
+        'HAS_CAIRO',
+        'HAS_PYCAIRO'
         ]
 
 # Add all other user configurable options to pickle pickle_store
@@ -778,7 +780,7 @@ if not preconfigured:
             
     if env['CAIRO'] and conf.CheckPKGConfig('0.15.0') and conf.CheckPKG('cairomm-1.0'):
         env.ParseConfig('pkg-config --libs --cflags cairomm-1.0')
-        env.Append(CXXFLAGS = '-DHAVE_CAIRO')
+        env['HAS_CAIRO'] = True
     else:
         env['SKIPPED_DEPS'].extend(['cairo','cairomm'])
 
@@ -928,7 +930,7 @@ if not preconfigured:
 
         if env['CAIRO'] and conf.CheckPKGConfig('0.15.0') and conf.CheckPKG('pycairo'):
             env.ParseConfig('pkg-config --cflags pycairo')
-            env.Append(CXXFLAGS = '-DHAVE_PYCAIRO')
+            env['HAS_PYCAIRO'] = True
         else:
             env['SKIPPED_DEPS'].extend(['pycairo'])
              

bindings/python/SConscript

@@ -48,7 +48,7 @@ if env['PLATFORM'] == 'Darwin':
     libraries.append('boost_regex%s' % env['BOOST_APPEND'])
     if env['THREADING'] == 'multi':
         libraries.append('boost_thread%s' % env['BOOST_APPEND'])
-    if '-DHAVE_CAIRO' in env['CXXFLAGS']:
+    if env['HAS_CAIRO']:
         libraries.append([lib for lib in env['LIBS'] if lib.startswith('cairo')])
 
     ##### Python linking on OS X is tricky ### 
@@ -139,12 +139,30 @@ env.Alias(target='install', source=ogcserver_module)
 # install the shared object beside the module directory
 sources = glob.glob('*.cpp')
 
-if env.get('SVN_REVISION'):
+
+if env['SVN_REVISION']:
     sources.remove('mapnik_python.cpp')
-    env2 = env.Clone();
+    env2 = env.Clone()
     env2.Append(CCFLAGS='-DSVN_REVISION=%s' % env['SVN_REVISION'])
+    if env['HAS_CAIRO']:
+        env2.Append(CXXFLAGS = '-DHAVE_CAIRO')
+    if env['HAS_PYCAIRO']:
+        env2.Append(CXXFLAGS = '-DHAVE_PYCAIRO')    
     sources.insert(0,env2.SharedObject('mapnik_python.cpp'))
 
+if env['HAS_CAIRO'] or env['HAS_PYCAIRO']:
+    env2 = env.Clone()
+    fixup = ['mapnik_image.cpp','python_cairo.cpp']
+    for cpp in fixup:
+        if cpp in sources:
+            sources.remove(cpp)
+    if env['HAS_CAIRO']:
+        env2.Append(CXXFLAGS = '-DHAVE_CAIRO')
+    if env['HAS_PYCAIRO']:
+        env2.Append(CXXFLAGS = '-DHAVE_PYCAIRO')
+    for cpp in fixup:
+        sources.insert(0,env2.SharedObject(cpp))
+
 _mapnik = env.LoadableModule('mapnik/_mapnik2', sources, LIBS=libraries, LDMODULEPREFIX='', LDMODULESUFFIX='.so', CPPPATH=headers,LINKFLAGS=linkflags)
 pymapniklib = env.Install(env['PYTHON_INSTALL_LOCATION'] + '/mapnik2',_mapnik)
 env.Alias(target='install',source=pymapniklib)

demo/c++/SConscript

@@ -37,7 +37,7 @@ boost_regex  = 'boost_regex%s' % env['BOOST_APPEND']
 
 libraries =  [boost_thread,'mapnik2']
 
-if '-DHAVE_CAIRO' in env['CXXFLAGS']:
+if env['HAS_CAIRO'] in env['CXXFLAGS']:
     # add cairo and cairomm-1.0 to libs
     libraries.append([lib for lib in env['LIBS'] if lib.startswith('cairo')])
 

src/SConscript

@@ -38,7 +38,7 @@ regex = 'boost_regex%s' % env['BOOST_APPEND']
 
 libraries = ['freetype','ltdl','png','tiff','z','jpeg','proj',env['ICU_LIB_NAME'],filesystem,regex]
 
-if '-DHAVE_CAIRO' in env['CXXFLAGS']:
+if env['HAS_CAIRO']:
     # add cairo and cairomm-1.0 to libs
     libraries.append([lib for lib in env['LIBS'] if lib.startswith('cairo')])
 
@@ -72,9 +72,9 @@ else: # Linux and others
 
 source = Split(
     """
+    color.cpp
     datasource_cache.cpp
     box2d.cpp
-    color.cpp
     expression_node.cpp
     expression_string.cpp
     filter_factory.cpp
@@ -116,6 +116,7 @@ source = Split(
     """   
     )
 
+
 if env['JPEG']:
     source += Split(
         """
@@ -146,10 +147,14 @@ if True : # agg backend
         )
 
 if 'cairo' in env['LIBS']:
-    source += Split(
-        """
-        cairo_renderer.cpp
-        """)
+    env2 = env.Clone()
+    env2.Append(CXXFLAGS = '-DHAVE_CAIRO')
+    fixup = ['cairo_renderer.cpp','graphics.cpp','image_util.cpp']
+    for cpp in fixup:
+        if cpp in source:
+            source.remove(cpp)
+    for cpp in fixup:
+        source.insert(0,env2.SharedObject(cpp))
 
 if env['XMLPARSER'] == 'tinyxml':
     source += Split(
@@ -165,7 +170,6 @@ elif env['XMLPARSER'] == 'libxml2':
         libxml2_loader.cpp
         """)
 
-
 mapnik = env.SharedLibrary('mapnik2', source, LIBS=libraries, LINKFLAGS=linkflags)
 if env['PLATFORM'] != 'Darwin':
     # Symlink command, only works if both files are in same directory
@@ -193,4 +197,5 @@ else:
     env.Alias(target='install', source=env.Install(install_prefix + '/' + env['LIBDIR_SCHEMA'], mapnik))
 
 includes = glob.glob('../include/mapnik/*.hpp')
+        
 env.Alias(target='install', source=env.Install(install_prefix+'/include/mapnik', includes))