+ # remove env variables from config cache built by initial configure,
+ # and create dedicated cache in temporary build directory
+ if [ -f "$${CONFIG_CACHE_FILE}" ]; then \
+ export TMP_CACHE_FILE=$$(mktemp --tmpdir newconfig-XXXXXXXX.cache); \
+ sed "/ac_cv_env/d" "$${CONFIG_CACHE_FILE}" > $${TMP_CACHE_FILE}; \
+ export EXTRAFLAGS="$${EXTRAFLAGS} --cache-file=$${TMP_CACHE_FILE}"; \
+ fi; \