+export PATH:=$(abs-builddir)/lily/$(outconfbase):$(abs-builddir)/buildscripts/$(outconfbase):$(PATH)
+
+# LilyPond is often run from within $(outdir), making a relative
+# PREFIX incorrect.
+export LILYPONDPREFIX:=$(shell cd $(depth)/$(builddir)/share/lilypond/$(TOPLEVEL_VERSION); pwd)
+
+export PYTHONPATH:=$(topdir)/python:$(PYTHONPATH)
+
+## arg, TEXINPUTS, TFMFONTS, MFINPUTS may still override and thus break this
+export TEXMF:={$(LILYPONDPREFIX),$(shell kpsexpand \$$TEXMF)}
+
+export MFINPUTS:=
+export TEXINPUTS:=
+export TFMFONTS:=
+
+
+export extra_mem_top=1000000
+export extra_mem_bottom=1000000
+export pool_size=500000