Index: doc/papers/concurrency/Makefile
===================================================================
--- doc/papers/concurrency/Makefile	(revision 161cdf1c71c97c71ad36951e9dbd349acb64b7d9)
+++ doc/papers/concurrency/Makefile	(revision fb16d5c2233951d7eeba58c1cb3de31029d98a82)
@@ -75,6 +75,6 @@
 	mkdir -p ${Build}
 
-${BASE}.out.ps:
-	ln -fs build/Paper.out.ps .
+${BASE}.out.ps: ${Build}
+	ln -fs ${Build}/Paper.out.ps .
 
 WileyNJD-AMA.bst:
Index: doc/papers/general/Makefile
===================================================================
--- doc/papers/general/Makefile	(revision 161cdf1c71c97c71ad36951e9dbd349acb64b7d9)
+++ doc/papers/general/Makefile	(revision fb16d5c2233951d7eeba58c1cb3de31029d98a82)
@@ -69,20 +69,20 @@
 	mkdir -p ${Build}
 
-${BASE}.out.ps:
-	ln -fs build/Paper.out.ps .
+${BASE}.out.ps: ${Build}
+	ln -fs ${Build}/Paper.out.ps .
 
 WileyNJD-AMA.bst:
 	ln -fs ../AMA/AMA-stix/ama/WileyNJD-AMA.bst .
 
-${GRAPHS} : timing.gp timing.dat
+${GRAPHS} : ${Build} timing.gp timing.dat
 	gnuplot -e Build="'${Build}/'" evaluation/timing.gp
 
-%.tex : %.fig
+%.tex : %.fig ${Build}
 	fig2dev -L eepic $< > ${Build}/$@
 
-%.ps : %.fig
+%.ps : %.fig ${Build}
 	fig2dev -L ps $< > ${Build}/$@
 
-%.pstex : %.fig
+%.pstex : %.fig ${Build}
 	fig2dev -L pstex $< > ${Build}/$@
 	fig2dev -L pstex_t -p ${Build}/$@ $< > ${Build}/$@_t