diff --git a/Makefile b/Makefile
index 722909156..6b2b6ca2e 100644
--- a/Makefile
+++ b/Makefile
@@ -612,10 +612,10 @@ test/testvarid.o: test/testvarid.cpp lib/cxx11emu.h test/testsuite.h lib/errorlo
 	$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -c -o test/testvarid.o test/testvarid.cpp
 
 externals/simplecpp/simplecpp.o: externals/simplecpp/simplecpp.cpp lib/cxx11emu.h externals/simplecpp/simplecpp.h
-	$(CXX)  $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -c -o externals/simplecpp/simplecpp.o externals/simplecpp/simplecpp.cpp
+	$(CXX)  $(CPPFLAGS) $(CFG) $(CXXFLAGS) -w $(UNDEF_STRICT_ANSI) -c -o externals/simplecpp/simplecpp.o externals/simplecpp/simplecpp.cpp
 
 externals/tinyxml/tinyxml2.o: externals/tinyxml/tinyxml2.cpp lib/cxx11emu.h externals/tinyxml/tinyxml2.h
-	$(CXX)  $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -c -o externals/tinyxml/tinyxml2.o externals/tinyxml/tinyxml2.cpp
+	$(CXX)  $(CPPFLAGS) $(CFG) $(CXXFLAGS) -w $(UNDEF_STRICT_ANSI) -c -o externals/tinyxml/tinyxml2.o externals/tinyxml/tinyxml2.cpp
 
 tools/dmake.o: tools/dmake.cpp lib/cxx11emu.h cli/filelister.h cli/pathmatch.h
 	$(CXX) ${INCLUDE_FOR_LIB} $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -c -o tools/dmake.o tools/dmake.cpp
diff --git a/tools/dmake.cpp b/tools/dmake.cpp
index 7ddfb0de2..6d9d6c4e8 100644
--- a/tools/dmake.cpp
+++ b/tools/dmake.cpp
@@ -78,13 +78,14 @@ static void getDeps(const std::string &filename, std::vector<std::string> &depfi
 static void compilefiles(std::ostream &fout, const std::vector<std::string> &files, const std::string &args)
 {
     for (unsigned int i = 0; i < files.size(); ++i) {
+        bool external(files[i].compare(0,10,"externals/") == 0);
         fout << objfile(files[i]) << ": " << files[i];
         std::vector<std::string> depfiles;
         depfiles.push_back("lib/cxx11emu.h");
         getDeps(files[i], depfiles);
         for (unsigned int dep = 0; dep < depfiles.size(); ++dep)
             fout << " " << depfiles[dep];
-        fout << "\n\t$(CXX) " << args << " $(CPPFLAGS) $(CFG) $(CXXFLAGS) $(UNDEF_STRICT_ANSI) -c -o " << objfile(files[i]) << " " << builddir(files[i]) << "\n\n";
+        fout << "\n\t$(CXX) " << args << " $(CPPFLAGS) $(CFG) $(CXXFLAGS)" << (external?" -w":"") << " $(UNDEF_STRICT_ANSI) -c -o " << objfile(files[i]) << " " << builddir(files[i]) << "\n\n";
     }
 }