# There are incorrect, as external users don't have our <config.h>.
regexp="$(cat ../config.h.in | \
sed -n -e 's/^#undef \([A-Z0-9_]*\)$/\1/p' | \
# There are incorrect, as external users don't have our <config.h>.
regexp="$(cat ../config.h.in | \
sed -n -e 's/^#undef \([A-Z0-9_]*\)$/\1/p' | \