add (build): scons clean targets (#621)

* now with -c distclean and -c buildclean options, it still deletes things in third_party bc of scons/khEnvironment.py though

* removed some debugging messages I missed

* missed a line from a previous experiment

* removing extra stuff

* added back the line that deletes /tmp/fusion_os_install and uncommented the original lines

* putting back some lines that i accidentally removed due to a bad local merge

* removing some whitespace i added during the last commit

* removing some whitespace i added during the last commit

* now has only one target, which is -c cleanall

* apparently neither Clean() nor Delete() can be successfully invoked from inside a non-target scons block?

* now fully deletes things after cleaning, preventing re-creation of metadata scons files

earth_enterprise/SConstruct

@@ -180,7 +180,28 @@ env.PhonyTargets(**this_dict)
 
 # Clean install dir (note: the current sconscripts leave stuff behind, like
 # directories).
-if env.GetOption('clean'):
-    # clean the search and getomcat install folders.
+
+if 'cleanall' in COMMAND_LINE_TARGETS:
+    #clean the search and getomcat install folders.
     file = installdir.get_path()
     commands.getstatusoutput("rm -rf " + file)
+
+    #clean /tmp/fusion_os_install
+    Clean(env, installdir)
+
+    #clean build data in ./src
+    clean_cmd = 'cd src; scons %s -c cleanall' % (arg_vars)
+    env.Execute(clean_cmd)
+
+    #clean scons metadata.. can't use Clean() or Delete()
+    #because they are scons functions and recreate
+    #the files/directories they delete
+    for sconsfile in [
+          ".sconsign.dblite",
+          ".sconf_temp",
+          "config.log",
+          "src/.sconsign.dblite",
+          "src/.sconf_temp",
+          "src/config.log"]:
+      os.system("rm -rf " + sconsfile)
+

earth_enterprise/src/SConstruct

@@ -524,3 +524,5 @@ env['LRELEASE'] = qtdir+'/bin/lrelease'
 env['KHIDL'] = File('#common/khxml/khidl.pl')
 
 SConscript('SConscript', build_dir=builddir, duplicate=0)
+
+env.Clean('cleanall', [[exportdir+"/"+x for x in os.listdir(exportdir) if x != "third_party"]])