[SPI-1964]: enable zlib for pythia8

generators/CMakeLists.txt

@@ -456,9 +456,10 @@ LCGPackage_Add(
   URL ${gen_url}/pythia8<pythia8_<NATIVE_VERSION>_author>.tgz
   CONFIGURE_COMMAND ./configure --prefix=<INSTALL_DIR> --with-hepmc2=${HepMC_home} --with-lhapdf6=${lhapdf_home} --enable-shared
      "--cxx-common=${CMAKE_CXX_FLAGS} -O2 -pedantic -W -Wall -Wshadow -fPIC"
+     --with-gzip=${zlib_home}
   BUILD_COMMAND ${MAKE}
   BUILD_IN_SOURCE 1
-  DEPENDS HepMC lhapdf
+  DEPENDS HepMC lhapdf zlib
 )
 
 #---Dire4Pythia8-------------------------------------------------------------------------------------------