with BR2_PACKAGE_OPENSSH=n building buildroot results in errors: buildroot/output/host/lib/gcc/arm-buildroot-linux-gnueabihf/8.3.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: ../src/eap_peer/eap_teap.o: in function `eap_teap_session_id': buildroot/build/wpa_supplicant-2.9/wpa_supplicant/../src/eap_peer/eap_teap.c:741: undefined reference to `tls_get_tls_unique' buildroot/build/wpa_supplicant-2.9/wpa_supplicant/../src/eap_peer/eap_teap.c:1828: undefined reference to `tls_connection_get_cipher_suite' buildroot/output/host/lib/gcc/arm-buildroot-linux-gnueabihf/8.3.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: ../src/eap_common/eap_teap_common.o: in function `eap_teap_tls_prf': 14:15:20 buildroot/build/wpa_supplicant-2.9/wpa_supplicant/../src/eap_common/eap_teap_common.c:75: undefined reference to `tls_prf_sha256' and so on. The fix is to add WPA_SUPPLICANT_DEPENDENCIES=opessl