--- a/debian/patches/reproducible_build	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/reproducible_build	2021-02-18 14:52:49.165246604 +0000
@@ -0,0 +1,49 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2021-02-18
+
+--- kjs-5.78.0.orig/src/kjs/bytecode/generator/filetemplate.h
++++ kjs-5.78.0/src/kjs/bytecode/generator/filetemplate.h
+@@ -46,6 +46,7 @@ struct FileTemplate {
+     {
+         isOK  = true;
+         lines = 0;
++	inFileBaseName = inFileName.substr(inFileName.find_last_of("/") + 1);
+ 
+         in.open(inFileName.c_str());
+         if (in.fail()) {
+@@ -60,7 +61,7 @@ struct FileTemplate {
+         }
+ 
+         if (isOK) {
+-            out << "// WARNING: Portions of this file are autogenerated from codes.def and " << inFileName << ".\n";
++            out << "// WARNING: Portions of this file are autogenerated from codes.def and " << inFileBaseName << ".\n";
+             out << "// (which is what the licensing terms apply to)\n";
+             out << "// Any changes you make here may be lost!\n";
+             handleUntilGenerate();
+@@ -77,7 +78,7 @@ struct FileTemplate {
+     // Goes until @generate..
+     void handleUntilGenerate()
+     {
+-        out << "#line " << (lines + 1) << " \"" << inFileName << "\"\n";
++        out << "#line " << (lines + 1) << " \"" << inFileBaseName << "\"\n";
+         while (!in.eof()) {
+             string line;
+             getline(in, line);
+@@ -92,7 +93,7 @@ struct FileTemplate {
+ 
+     void handleSuffix()
+     {
+-        out << "#line " << (lines + 1) << " \"" << inFileName << "\"\n";
++        out << "#line " << (lines + 1) << " \"" << inFileBaseName << "\"\n";
+         while (!in.eof()) {
+             string line;
+             getline(in, line);
+@@ -101,6 +102,7 @@ struct FileTemplate {
+     }
+ 
+     string   inFileName;
++    string   inFileBaseName;
+     string   outFileName;
+     ifstream in;
+     ofstream out;
--- a/debian/patches/series	2021-02-18 12:56:03.551163060 +0000
--- b/debian/patches/series	2021-02-18 13:00:06.669560158 +0000
@@ -1 +1,2 @@
 install_missing_headers
+reproducible_build