https://bugs.gentoo.org/show_bug.cgi?id=352265

Make sure LDFLAGS comes first, such that all libraries are considered,
and not discarded when --as-needed is in effect.

--- OS/Makefile-Base
+++ OS/Makefile-Base
@@ -327,12 +327,12 @@
 	$(FE)$(CC) -c $(CFLAGS) $(INCLUDE) $(IPV6_INCLUDE) $(TLS_INCLUDE) version.c
 	rm -f exim
 	@echo "$(LNCC) -o exim"
-	$(FE)$(PURIFY) $(LNCC) -o exim $(LFLAGS) $(OBJ_EXIM) version.o \
+	$(FE)$(PURIFY) $(LNCC) -o exim $(LDFLAGS) $(OBJ_EXIM) version.o \
 	  routers/routers.a transports/transports.a lookups/lookups.a \
 	  auths/auths.a pdkim/pdkim.a \
 	  $(LIBRESOLV) $(LIBS) $(LIBS_EXIM) $(IPV6_LIBS) $(EXTRALIBS) \
 	  $(EXTRALIBS_EXIM) $(DBMLIB) $(LOOKUP_LIBS) $(AUTH_LIBS) \
-	  $(PERL_LIBS) $(TLS_LIBS) $(PCRE_LIBS) $(LDFLAGS)
+	  $(PERL_LIBS) $(TLS_LIBS) $(PCRE_LIBS) $(LFLAGS)
 	@if [ x"$(STRIP_COMMAND)" != x"" ]; then \
 	  echo $(STRIP_COMMAND) exim; \
 	  $(STRIP_COMMAND) exim; \