diff -r 31e63e25b4cc -r 64beb9e9c749 targets/toolchain_makefile.py
--- a/targets/toolchain_makefile.py	Mon Aug 21 20:17:19 2017 +0000
+++ b/targets/toolchain_makefile.py	Mon Aug 21 23:22:58 2017 +0300
@@ -22,18 +22,21 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
-import os, re, operator
+import os
+import re
+import operator
 from util.ProcessLogger import ProcessLogger
 import hashlib
 
 import time
 
-includes_re =  re.compile('\s*#include\s*["<]([^">]*)[">].*')
+includes_re = re.compile('\s*#include\s*["<]([^">]*)[">].*')
+
 
 class toolchain_makefile():
     def __init__(self, CTRInstance):
         self.CTRInstance = CTRInstance
-        self.md5key = None 
+        self.md5key = None
         self.buildpath = None
         self.SetBuildPath(self.CTRInstance._getBuildPath())
 
@@ -66,7 +69,7 @@
 
     def concat_deps(self, bn):
         # read source
-        src = open(os.path.join(self.buildpath, bn),"r").read()
+        src = open(os.path.join(self.buildpath, bn), "r").read()
         # update direct dependencies
         deps = []
         for l in src.splitlines():
@@ -74,16 +77,16 @@
             if res is not None:
                 depfn = res.groups()[0]
                 if os.path.exists(os.path.join(self.buildpath, depfn)):
-                    #print bn + " depends on "+depfn
+                    # print bn + " depends on "+depfn
                     deps.append(depfn)
         # recurse through deps
         # TODO detect cicular deps.
         return reduce(operator.concat, map(self.concat_deps, deps), src)
 
     def build(self):
-        srcfiles= []
+        srcfiles = []
         cflags = []
-        wholesrcdata = "" 
+        wholesrcdata = ""
         for Location, CFilesAndCFLAGS, DoCalls in self.CTRInstance.LocationCFilesAndCFLAGS:
             # Get CFiles list to give it to makefile
             for CFile, CFLAGS in CFilesAndCFLAGS:
@@ -92,7 +95,7 @@
                 srcfiles.append(CFileName)
                 if CFLAGS not in cflags:
                     cflags.append(CFLAGS)
-                        
+
         oldmd5 = self.md5key
         self.md5key = hashlib.md5(wholesrcdata).hexdigest()
 
@@ -101,28 +104,26 @@
         f.write(self.md5key)
         f.close()
 
-        if oldmd5 != self.md5key :
+        if oldmd5 != self.md5key:
             target = self.CTRInstance.GetTarget().getcontent()
             beremizcommand = {"src": ' '.join(srcfiles),
                               "cflags": ' '.join(cflags),
                               "md5": self.md5key,
-                              "buildpath": self.buildpath
-                             }
-            
-            # clean sequence of multiple whitespaces 
+                              "buildpath": self.buildpath}
+
+            # clean sequence of multiple whitespaces
             cmd = re.sub(r"[ ]+", " ", target.getCommand().strip())
 
-            command = [ token % beremizcommand for token in cmd.split(' ')]
+            command = [token % beremizcommand for token in cmd.split(' ')]
 
             # Call Makefile to build PLC code and link it with target specific code
             status, result, err_result = ProcessLogger(self.CTRInstance.logger,
                                                        command).spin()
-            if status :
+            if status:
                 self.md5key = None
                 self.CTRInstance.logger.write_error(_("C compilation failed.\n"))
                 return False
             return True
-        else :
+        else:
             self.CTRInstance.logger.write(_("Source didn't change, no build.\n"))
             return True
-