-LLP = $(abs_top_builddir)/lib/.libs
-SPHINXBUILD = PYTHONPATH="$(PP)" LD_LIBRARY_PATH="$(LLP)" $(PYTHON) -m sphinx
+LLP = $(abs_top_builddir)/src/lib/.libs
+
+# PATH is used as a replacement for LD_LIBRARY_PATH on Windows build
+# (CYGWIN, MINGW).
+# DYLD_LIBRARY_PATH is used a replacement for LD_LIBRARY_PATH on MacOSX build.
+SPHINXBUILD = PATH="$(LLP):$$PATH" PYTHONPATH="$(PP)" LD_LIBRARY_PATH="$(LLP)" DYLD_LIBRARY_PATH="$(LLP)" $(PYTHON) -m sphinx