Index: gc_lang/fr/build.py
==================================================================
--- gc_lang/fr/build.py
+++ gc_lang/fr/build.py
@@ -37,11 +37,11 @@
         sHTML += '</div>\n'
     return sHTML
 
 
 def createFirefoxExtension (sLang, dVars):
-    "create extension for Firefox"
+    "create extension for Firefox (obsolete)"
     print("Building extension for Firefox")
     helpers.createCleanFolder("_build/xpi/"+sLang)
     dir_util.copy_tree("gc_lang/"+sLang+"/xpi/", "_build/xpi/"+sLang)
     dir_util.copy_tree("grammalecte-js", "_build/xpi/"+sLang+"/grammalecte")
     sHTML, dProperties = _createOptionsForFirefox(dVars)
@@ -56,10 +56,11 @@
     with helpers.cd("_build/xpi/"+sLang):
         os.system("jpm xpi")
 
 
 def _createOptionsForFirefox (dVars):
+    # obsolete
     sHTML = ""
     for sSection, lOpt in dVars['lStructOpt']:
         sHTML += '\n<div id="subsection_' + sSection + '" class="opt_subsection">\n  <h2 data-l10n-id="option_'+sSection+'"></h2>\n'
         for lLineOpt in lOpt:
             for sOpt in lLineOpt:
@@ -112,9 +113,12 @@
 
 def _copyGrammalecteJSPackageInZipFile (hZip, spLangPack, sDicName, sAddPath=""):
     for sf in os.listdir("grammalecte-js"):
         if not os.path.isdir("grammalecte-js/"+sf):
             hZip.write("grammalecte-js/"+sf, sAddPath+"grammalecte-js/"+sf)
+    for sf in os.listdir("grammalecte-js/graphspell"):
+        if not os.path.isdir("grammalecte-js/graphspell/"+sf):
+            hZip.write("grammalecte-js/graphspell/"+sf, sAddPath+"grammalecte-js/graphspell/"+sf)
+    hZip.write("grammalecte-js/graphspell/_dictionaries/"+sDicName, sAddPath+"grammalecte-js/graphspell/_dictionaries/"+sDicName)
     for sf in os.listdir(spLangPack):
         if not os.path.isdir(spLangPack+"/"+sf):
             hZip.write(spLangPack+"/"+sf, sAddPath+spLangPack+"/"+sf)
-    hZip.write("grammalecte-js/_dictionaries/"+sDicName, sAddPath+"grammalecte-js/_dictionaries/"+sDicName)

Index: make.py
==================================================================
--- make.py
+++ make.py
@@ -206,10 +206,16 @@
             sCodePlugins += "\n\n" + open(spLang+'/modules/'+sf, "r", encoding="utf-8").read()
             print(sf, end=", ")
     print()
     dVars["plugins"] = sCodePlugins
 
+    ## COPY GC_CORE COMMON FILES
+    for sf in os.listdir("gc_core/py"):
+        if not os.path.isdir("gc_core/py/"+sf):
+            helpers.copyAndFileTemplate("gc_core/py/"+sf, "grammalecte/"+sf, dVars)
+    open("grammalecte/WARNING.txt", "w", encoding="utf-8", newline="\n").write(sWarningMessage)
+
     ## CREATE GRAMMAR CHECKER PACKAGE
     spLangPack = "grammalecte/"+sLang
     helpers.createCleanFolder(spLangPack)
     for sf in os.listdir("gc_core/py/lang_core"):
         if not os.path.isdir("gc_core/py/lang_core/"+sf):
@@ -278,27 +284,29 @@
             build_module.build(sLang, dVars, spLangPack)
 
     return dVars['version']
 
 
-def copyGraphspellCore ():
+def copyGraphspellCore (bJavaScript=False):
     helpers.createCleanFolder("grammalecte/graphspell")
-    helpers.createCleanFolder("grammalecte-js/graphspell")
     dir_util.mkpath("grammalecte/graphspell/_dictionaries")
-    dir_util.mkpath("grammalecte-js/graphspell/_dictionaries")
     for sf in os.listdir("graphspell"):
         if not os.path.isdir("graphspell/"+sf):
             file_util.copy_file("graphspell/"+sf, "grammalecte/graphspell")
-    for sf in os.listdir("graphspell-js"):
-        if not os.path.isdir("graphspell-js/"+sf):
-            file_util.copy_file("graphspell-js/"+sf, "grammalecte-js/graphspell")
+    if bJavaScript:
+        helpers.createCleanFolder("grammalecte-js/graphspell")
+        dir_util.mkpath("grammalecte-js/graphspell/_dictionaries")
+        for sf in os.listdir("graphspell-js"):
+            if not os.path.isdir("graphspell-js/"+sf):
+                file_util.copy_file("graphspell-js/"+sf, "grammalecte-js/graphspell")
 
 
-def copyGraphspellDictionary (sDicName):
+def copyGraphspellDictionary (sDicName, bJavaScript=False):
     file_util.copy_file("graphspell/_dictionaries/"+sDicName.strip()+".bdic", "grammalecte/graphspell/_dictionaries")
     file_util.copy_file("graphspell/_dictionaries/"+sDicName.strip()+".info.txt", "grammalecte/graphspell/_dictionaries")
-    file_util.copy_file("graphspell-js/_dictionaries/"+sDicName.strip()+".json", "grammalecte-js/graphspell/_dictionaries")
+    if bJavaScript:
+        file_util.copy_file("graphspell-js/_dictionaries/"+sDicName.strip()+".json", "grammalecte-js/graphspell/_dictionaries")
 
 
 def main ():
     print("Python: " + sys.version)
     xParser = argparse.ArgumentParser()
@@ -321,25 +329,20 @@
         xArgs.build_data_before = True
         xArgs.build_data_after = True
 
     dir_util.mkpath("_build")
     dir_util.mkpath("grammalecte")
-    dir_util.mkpath("grammalecte-js")
+    if xArgs.javascript:
+        dir_util.mkpath("grammalecte-js")
 
-    copyGraphspellCore()
+    copyGraphspellCore(xArgs.javascript)
 
     for sLang in xArgs.lang:
         if os.path.exists("gc_lang/"+sLang) and os.path.isdir("gc_lang/"+sLang):
             xConfig = getConfig(sLang)
             dVars = xConfig._sections['args']
 
-            # copy gc_core common file in Python now to be able to compile dictionary if required
-            for sf in os.listdir("gc_core/py"):
-                if not os.path.isdir("gc_core/py/"+sf):
-                    helpers.copyAndFileTemplate("gc_core/py/"+sf, "grammalecte/"+sf, dVars)
-            open("grammalecte/WARNING.txt", "w", encoding="utf-8", newline="\n").write(sWarningMessage)
-
             # build data
             build_data_module = None
             if xArgs.build_data_before or xArgs.build_data_after:
                 # lang data
                 try:
@@ -354,11 +357,11 @@
             if build_data_module and xArgs.build_data_after:
                 build_data_module.after('gc_lang/'+sLang, dVars, xArgs.javascript)
 
             # copy dictionaries from Graphspell
             for sDicName in dVars['dic_name'].split(","):
-                copyGraphspellDictionary(sDicName)
+                copyGraphspellDictionary(sDicName, xArgs.javascript)
 
             # make
             sVersion = create(sLang, xConfig, xArgs.install, xArgs.javascript, )
 
             # tests