Configtool: improve search for avr-gcc & Co.

This should allow to build on any OS with Arduino IDE installed
and/or with avr-gcc & Co. available trough the normal shell.

Instead of looking at the current platform it's looked at wether
an Arduino IDE path is set. If yes, tools inside there are used.
If no such path is set, just the basename is used to let the OS
search for it ($PATH, etc.).

This is related to issue #152.

configtool/build.py

@@ -13,6 +13,37 @@ SCRIPT_RUNNING = 1
 SCRIPT_FINISHED = 2
 SCRIPT_CANCELLED = 3
 
+TOOLPATHS_INSIDE_ARDUINO = [
+  "hardware/tools/avr/bin/",
+  "hardware/tools/" # avrdude in Arduino 1.0.x
+]
+
+
+class ScriptTools:
+  def __init__(self, settings):
+    self.settings = settings
+
+  def figureCommandPath(self, baseCommand):
+    if self.settings.arduinodir:
+      cmdpath = self.settings.arduinodir
+
+      if platform == "darwin":
+        # That's an OS property, the Applicaton Bundle hierarchy.
+        cmdpath = os.path.join(cmdpath, "Contents/Resources/Java")
+
+      for pathOption in TOOLPATHS_INSIDE_ARDUINO:
+        cmdpathTry = cmdpath
+        for dir in pathOption.split("/"):
+          cmdpathTry = os.path.join(cmdpathTry, dir)
+        cmdpathTry = os.path.join(cmdpathTry, baseCommand)
+        if os.path.exists(cmdpathTry):
+          cmdpath = "\"" + cmdpathTry + "\""
+          break
+    else:
+      cmdpath = baseCommand
+
+    return cmdpath
+
 
 class ScriptThread:
   def __init__(self, win, script):
@@ -159,10 +190,7 @@ class Build(wx.Dialog):
   def report(self):
     self.script = []
     self.reportLines = []
-    if platform == "win32":
-      cmdpath = "\"" + join(self.settings.arduinodir, "avr-objdump") + "\""
-    else:
-      cmdpath = "avr-objdump"
+    cmdpath = ScriptTools(self.settings).figureCommandPath("avr-objdump")
     elfpath = "\"" + join(self.root, "build", "teacup.elf") + "\""
     cmd = cmdpath + " -h " + elfpath
     self.script.append(cmd)
@@ -173,10 +201,7 @@ class Build(wx.Dialog):
 
   def generateCompileScript(self):
     self.script = []
-    if platform == "win32":
-      cmdpath = "\"" + join(self.settings.arduinodir, "avr-gcc") + "\""
-    else:
-      cmdpath = "avr-gcc"
+    cmdpath = ScriptTools(self.settings).figureCommandPath("avr-gcc")
 
     cfiles = [f for f in os.listdir(self.root)
                 if isfile(join(self.root,f)) and f.endswith(".c")]
@@ -198,10 +223,7 @@ class Build(wx.Dialog):
 
   def generateLinkScript(self):
     self.script = []
-    if platform == "win32":
-      cmdpath = "\"" + join(self.settings.arduinodir, "avr-gcc") + "\""
-    else:
-      cmdpath = "avr-gcc"
+    cmdpath = ScriptTools(self.settings).figureCommandPath("avr-gcc")
 
     ofiles = ["\"" + join(self.root, "build", f) + "\""
               for f in os.listdir(join(self.root, "build"))
@@ -217,10 +239,7 @@ class Build(wx.Dialog):
           elfpath + " " + opath + " -lm"
     self.script.append(cmd)
 
-    if platform == "win32":
-      cmdpath = "\"" + join(self.settings.arduinodir, "avr-objcopy") + "\""
-    else:
-      cmdpath = "avr-objcopy"
+    cmdpath = ScriptTools(self.settings).figureCommandPath("avr-objcopy")
     cmd = cmdpath + " " + self.settings.objcopyflags + " " +  elfpath + \
           " " + hexpath
     self.script.append(cmd)
@@ -363,13 +382,11 @@ class Upload(wx.Dialog):
 
   def generateUploadScript(self):
     self.script = []
-    if platform == "win32":
-      cmdpath = "\"" + join(self.settings.arduinodir, "avrdude") + "\""
-    else:
-      cmdpath = "avrdude"
-
+    cmdpath = ScriptTools(self.settings).figureCommandPath("avrdude")
     hexpath = "\"" + join(self.root, "teacup.hex") + "\""
 
+    if self.settings.arduinodir:
+      cmdpath = cmdpath + " -C " + cmdpath.rstrip("\"") + ".conf\""
     cmd = cmdpath + " -c %s -b %s -p %s -P %s -U flash:w:%s:i" % \
           (self.settings.programmer, self.baud, self.cpu, self.settings.port,
            hexpath)