-TEX_FILES = $(filter-out texinfo.tex, $(wildcard *.tex))
-EXTRA_DIST_FILES = $(TEX_FILES) texinfo.tex texinfo.cnf
+TEX_FILES = $(filter-out texinfo.tex, $(call src-wildcard,*.tex))
+EXTRA_DIST_FILES = $(TEX_FILES) texinfo.tex texinfo.cnf quotes.patch