Fix hardcoded link to dl library

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 018f9f3709)

kalzium/configure.in.in

@@ -53,7 +53,7 @@ if test "x$with_ocamlsolver" != xno; then
     OCAMLLIB_FLAGS="-L$OCAMLLIB"
     FACILELIB=`ocamlc -where`/facile
     FACILELIB_FLAGS="-L$FACILELIB"
-    EQCHEM_LDADD="-lasmrun -lnums -lm -ldl solver.o modwrap.o"
+    EQCHEM_LDADD="-lasmrun -lnums -lm $LIBDL solver.o modwrap.o"
 
     AC_DEFINE(HAVE_FACILE, 1)
   fi

kalzium/src/solver/Makefile

@@ -43,7 +43,7 @@ testcprog: $(CHEM_CMX) $(CHEM_O)
 	$(OCAMLOPT) -output-obj -o solver.o $(LIBADD_CMX) $(CHEM_CMX) modwrap.o
 	gcc -c -o main.o main.c -L $(OCAMLLIB)
 	gcc -o $@ main.o solver.o -L $(OCAMLLIB) \
-          -L $(OCAMLLIB)/facile -lasmrun -lstr -lnums -lm -ldl modwrap.o
+          -L $(OCAMLLIB)/facile -lasmrun -lstr -lnums -lm $(LIBDL) modwrap.o
 
 .SUFFIXES:
 .SUFFIXES: .ml .mli .mly .mll .cmi .cmo .cmx .p.cmx .c