File getdp-2.11.2-reproducible-date.patch of Package getdp

# PATCH-FIX-UPSTREAM

    use cmake TIMESTAMP
    
    instead of the 'date' command.
    This is not only more portable, but also allows to override the build date
    to enable reproducible builds.
    
    See https://reproducible-builds.org/ for why this is good


commit c53529ffaa4c42130c2b6799441cf8d164f85343
Author: Christophe Geuzaine <cgeuzaine@ulg.ac.be>
Date:   Tue Jul 25 11:09:19 2017 +0200

    fix #40

Index: getdp-2.11.2-source/CMakeLists.txt
===================================================================
--- getdp-2.11.2-source.orig/CMakeLists.txt
+++ getdp-2.11.2-source/CMakeLists.txt
@@ -76,8 +76,12 @@ set(GETDP_API
   Kernel/GetDP.h
 )
 
-execute_process(COMMAND date "+%Y%m%d" OUTPUT_VARIABLE DATE
-                OUTPUT_STRIP_TRAILING_WHITESPACE)
+if(${CMAKE_MAJOR_VERSION} GREATER 2)
+  string(TIMESTAMP DATE "%Y%m%d")
+else(${CMAKE_MAJOR_VERSION} GREATER 2)
+  execute_process(COMMAND date "+%Y%m%d" OUTPUT_VARIABLE DATE
+                  OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif(${CMAKE_MAJOR_VERSION} GREATER 2)
 execute_process(COMMAND hostname OUTPUT_VARIABLE HOSTNAME
                 OUTPUT_STRIP_TRAILING_WHITESPACE)
 execute_process(COMMAND whoami OUTPUT_VARIABLE PACKAGER