must use -lm (only spotted when not -O2...)

diff --git a/layout/Makefile b/layout/Makefile
index d354748b487d6baca0cd068f598f72ef909a318c..3e4754c3894cd8eb926ab5f76931fb81540540a8 100644 (file)
--- a/layout/Makefile
+++ b/layout/Makefile
@@ -29,7 +29,7 @@ lpages:               $(LPAGES)
 o=>$@.new && mv -f $@.new $@
 
 subseg2display:        subseg2display.o
-               $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+ $(LIBS) -lnetpbm -lpub
+               $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $+ $(LIBS) -lnetpbm -lpub -lm
 
 %.d4:          %.m4 $(M4INCS) Makefile
                m4 -s <$< $o