--- a/debian/patches/Reproducible-build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/Reproducible-build.patch	2020-06-24 10:25:46.192857080 +0100
@@ -0,0 +1,26 @@
+Description: Make the build reproducible
+Author: Chris Lamb <lamby@debian.org>
+Last-Update: 2020-06-24
+
+--- gftl-1.2.5.orig/include/templates/CMakeLists.txt
++++ gftl-1.2.5/include/templates/CMakeLists.txt
+@@ -30,7 +30,7 @@ foreach( macro_file ${macro_files} )
+ 
+     add_custom_command (
+       OUTPUT ${outfile}
+-      COMMAND m4 -s -Dparam=${param} -I${src}/../templates < ${infile} > ${outfile}
++      COMMAND m4 -Dparam=${param} -I${src}/../templates < ${infile} > ${outfile}
+       WORKING_DIRECTORY ${bin}
+       DEPENDS ${infile}
+       )
+--- gftl-1.2.5.orig/include/types/CMakeLists.txt
++++ gftl-1.2.5/include/types/CMakeLists.txt
+@@ -46,7 +46,7 @@ foreach (macro_file ${macro_files})
+ 
+     add_custom_command (
+       OUTPUT ${outfile}
+-      COMMAND m4 -s -Dparam=${param} -I${src}/../templates < ${infile} > ${outfile}
++      COMMAND m4 -Dparam=${param} -I${src}/../templates < ${infile} > ${outfile}
+       WORKING_DIRECTORY ${bin}
+       DEPENDS ${infile}
+       )
--- a/debian/patches/series	2020-06-24 10:06:35.650534804 +0100
--- b/debian/patches/series	2020-06-24 10:25:45.024845254 +0100
@@ -1,2 +1,3 @@
 Install-files-in-standard-Debian-paths.patch
 Fixes-96-Eliminate-extraneous-includes.patch
+Reproducible-build.patch