Description: Set HTML_TIMESTAMP to NO and gzip -n to make package reproducible

--- simgrid-3.11.1.orig/buildtools/Cmake/GenerateDoc.cmake
+++ simgrid-3.11.1/buildtools/Cmake/GenerateDoc.cmake
@@ -48,7 +48,7 @@ if(DOXYGEN_FOUND)
   ADD_CUSTOM_COMMAND(TARGET simgrid_documentation
     COMMAND ${FIG2DEV_PATH}/fig2dev -Lmap ${CMAKE_HOME_DIRECTORY}/doc/shared/fig/simgrid_modules.fig | perl -pe 's/imagemap/simgrid_modules/g'| perl -pe 's/<IMG/<IMG style=border:0px/g' | ${CMAKE_HOME_DIRECTORY}/tools/doxygen/fig2dev_postprocessor.pl > ${CMAKE_HOME_DIRECTORY}/doc/simgrid_modules.map
     COMMAND pwd
-    COMMAND ${CMAKE_COMMAND} -E tar czf html/msg-tuto-src.tgz msg-tuto-src/
+    COMMAND ${CMAKE_COMMAND} -E env GZIP=-9n tar czf html/msg-tuto-src.tgz msg-tuto-src/
     COMMAND ${CMAKE_COMMAND} -E echo "XX Run doxygen"
     COMMAND ${DOXYGEN_EXECUTABLE} Doxyfile
     COMMAND ${CMAKE_COMMAND} -E echo "XX Generate the index files"
--- simgrid-3.11.1.orig/doc/Doxyfile.in
+++ simgrid-3.11.1/doc/Doxyfile.in
@@ -1007,7 +1007,7 @@ HTML_COLORSTYLE_GAMMA  = 80
 # page will contain the date and time when the page was generated. Setting
 # this to NO can help when comparing the output of multiple runs.
 
-HTML_TIMESTAMP         = YES
+HTML_TIMESTAMP         = NO
 
 # If the HTML_DYNAMIC_SECTIONS tag is set to YES then the generated HTML
 # documentation will contain sections that can be hidden and shown after the
