Also get the "-lpython" option from the command line if needed. Befor…

…e Fedora 33, always

came with python-config --libs, but no more.

GNUmakefile

@@ -84,12 +84,13 @@ endif
 
 G4shared_libs := $(wildcard $(G4ROOT)/lib64/*.so)
 BOOST_PYTHON_LIB = boost_python
+PYTHON_LIB_OPTION = ""
 
 INTYLIBS += -Wl,--whole-archive $(DANALIBS) -Wl,--no-whole-archive
 INTYLIBS += -fPIC -I$(HDDS_HOME) -I$(XERCESCROOT)/include
 INTYLIBS += -L${XERCESCROOT}/lib -lxerces-c
 INTYLIBS += -L$(G4TMPDIR) -lhdds
-INTYLIBS += -l$(BOOST_PYTHON_LIB) -L$(shell $(PYTHON_CONFIG) --prefix)/lib $(shell $(PYTHON_CONFIG) --ldflags)
+INTYLIBS += -l$(BOOST_PYTHON_LIB) -L$(shell $(PYTHON_CONFIG) --prefix)/lib $(shell $(PYTHON_CONFIG) --ldflags) $(PYTHON_LIB_OPTION)
 INTYLIBS += -L$(G4ROOT)/lib64 $(patsubst $(G4ROOT)/lib64/lib%.so, -l%, $(G4shared_libs))
 INTYLIBS += -lgfortran
 INTYLIBS += -L/usr/lib64