Fix Linux build issues with new LINKCUPS macro (Issue #5261)

backend/Makefile

@@ -243,7 +243,7 @@ libbackend.a:	$(LIBOBJS)
 
 dnssd:	dnssd.o ../cups/$(LIBCUPS) libbackend.a
 	echo Linking $@...
-	$(LD_CC) $(ALL_LDFLAGS) -o dnssd dnssd.o libbackend.a $(LINKCUPS)
+	$(LD_CC) $(ALL_LDFLAGS) -o dnssd dnssd.o libbackend.a $(DNSSDLIBS) $(LINKCUPS)
 	$(CODE_SIGN) -s "$(CODE_SIGN_IDENTITY)" $@
 	if test `uname` = Darwin; then \
 		$(RM) mdns; \

scheduler/Makefile

@@ -315,7 +315,7 @@ uninstall:
 cupsd:	$(CUPSDOBJS) libcupsmime.a ../cups/$(LIBCUPS)
 	echo Linking $@...
 	$(LD_CC) $(ALL_LDFLAGS) -o cupsd $(CUPSDOBJS) libcupsmime.a \
-		$(PAMLIBS) $(LIBPAPER) $(LIBMALLOC) $(SERVERLIBS) \
+		$(PAMLIBS) $(LIBPAPER) $(LIBMALLOC) $(DNSSDLIBS) $(SERVERLIBS) \
 		$(ONDEMANDLIBS) $(LIBWRAP) $(LIBGSSAPI) $(COMMONLIBS) $(LINKCUPS)
 	$(CODE_SIGN) -s "$(CODE_SIGN_IDENTITY)" $@
 

systemv/Makefile

@@ -179,7 +179,7 @@ cupsctl:	cupsctl.o ../cups/$(LIBCUPS)
 
 cupstestppd:	cupstestppd.o ../cups/$(LIBCUPS)
 	echo Linking $@...
-	$(LD_CC) $(ALL_LDFLAGS) -o $@ cupstestppd.o $(LINKCUPS)
+	$(LD_CC) $(ALL_LDFLAGS) -o $@ cupstestppd.o -lm $(LINKCUPS)
 	$(CODE_SIGN) -s "$(CODE_SIGN_IDENTITY)" $@
 
 cupstestppd-static:	cupstestppd.o ../cups/$(LIBCUPSSTATIC)

tools/Makefile

@@ -147,7 +147,7 @@ local:	ippeveprinter-static ipptool-static
 
 ippeveprinter:	ippeveprinter.o ../cups/$(LIBCUPS)
 	echo Linking $@...
-	$(LD_CC) $(ALL_LDFLAGS) -o $@ ippeveprinter.o $(LINKCUPS)
+	$(LD_CC) $(ALL_LDFLAGS) -o $@ ippeveprinter.o $(DNSSDLIBS) $(LINKCUPS)
 	$(CODE_SIGN) -s "$(CODE_SIGN_IDENTITY)" $@
 
 
@@ -187,7 +187,7 @@ ippeveps:	ippeveps.o ../cups/$(LIBCUPS)
 
 ippfind:	ippfind.o ../cups/$(LIBCUPS)
 	echo Linking $@...
-	$(LD_CC) $(ALL_LDFLAGS) -o $@ ippfind.o $(LINKCUPS)
+	$(LD_CC) $(ALL_LDFLAGS) -o $@ ippfind.o $(DNSSDLIBS) $(LINKCUPS)
 	$(CODE_SIGN) -s "$(CODE_SIGN_IDENTITY)" $@