http://bugs.gentoo.org/330255

liblvm2app.so: undefined reference to `floor'

--- LVM2.2.02.178/liblvm/Makefile.in
+++ LVM2.2.02.178/liblvm/Makefile.in
@@ -43,7 +43,7 @@
 include $(top_builddir)/make.tmpl
 
 LDFLAGS += -L$(top_builddir)/lib -L$(top_builddir)/daemons/dmeventd
-LIBS += $(LVMINTERNAL_LIBS) -ldevmapper -laio
+LIBS += $(LVMINTERNAL_LIBS) -ldevmapper -laio -lm
 
 .PHONY: install_dynamic install_static install_include install_pkgconfig