diff -urN xc3sprog-9999.orig/bitfile.cpp xc3sprog-9999/bitfile.cpp
--- xc3sprog-9999.orig/bitfile.cpp	2021-05-18 10:59:54.579686957 +0200
+++ xc3sprog-9999/bitfile.cpp	2021-05-18 11:05:54.542944129 +0200
@@ -35,7 +35,7 @@
 #include <time.h>
 #include "bitrev.h"
 
-using namespace std;
+//using namespace std;
 
 BitFile::BitFile()
   : length(0)
@@ -607,14 +607,14 @@
   return clip;
 }
 
-void BitFile::error(const string &str)
+void BitFile::error(const std::string &str)
 {
   errorStr=str;
   Error=true;
   fprintf(logfile,"%s\n",str.c_str());
 }
 
-void BitFile::readField(string &field, FILE *fp)
+void BitFile::readField(std::string &field, FILE *fp)
 {
   byte t[2];
   fread(t,1,2,fp); 
diff -urN xc3sprog-9999.orig/srecfile.cpp xc3sprog-9999/srecfile.cpp
--- xc3sprog-9999.orig/srecfile.cpp	2021-05-18 10:59:54.613019051 +0200
+++ xc3sprog-9999/srecfile.cpp	2021-05-18 11:06:12.015624765 +0200
@@ -28,7 +28,7 @@
 #include <string.h>
 #include <stdlib.h>
 
-using namespace std;
+//using namespace std;
 
 int SrecFile::DecodeSRecordLine(char *source, unsigned char *dest, S_Record *SRec)
 {