--- /dev/null
+--- a/hostapd/main.c
++++ b/hostapd/main.c
+@@ -19,6 +19,7 @@
+
+ #include "utils/common.h"
+ #include "utils/eloop.h"
++#include "utils/build_features.h"
+ #include "crypto/random.h"
+ #include "crypto/tls.h"
+ #include "common/version.h"
+@@ -574,7 +575,7 @@ int main(int argc, char *argv[])
+
+ wpa_supplicant_event = hostapd_wpa_event;
+ for (;;) {
+- c = getopt(argc, argv, "Bde:f:hKP:tv");
++ c = getopt(argc, argv, "Bde:f:hKP:tv::");
+ if (c < 0)
+ break;
+ switch (c) {
+@@ -606,6 +607,8 @@ int main(int argc, char *argv[])
+ wpa_debug_timestamp++;
+ break;
+ case 'v':
++ if (optarg)
++ exit(!has_feature(optarg));
+ show_version();
+ exit(1);
+ break;
+--- a/wpa_supplicant/main.c
++++ b/wpa_supplicant/main.c
+@@ -18,6 +18,7 @@
+ #endif /* __linux__ */
+
+ #include "common.h"
++#include "build_features.h"
+ #include "wpa_supplicant_i.h"
+ #include "driver_i.h"
+
+@@ -146,7 +147,7 @@ int main(int argc, char *argv[])
+ wpa_supplicant_fd_workaround();
+
+ for (;;) {
+- c = getopt(argc, argv, "b:Bc:C:D:de:f:g:hH:i:KLNo:O:p:P:qstuvW");
++ c = getopt(argc, argv, "b:Bc:C:D:de:f:g:hH:i:KLNo:O:p:P:qstuv::W");
+ if (c < 0)
+ break;
+ switch (c) {
+@@ -233,8 +234,12 @@ int main(int argc, char *argv[])
+ break;
+ #endif /* CONFIG_DBUS */
+ case 'v':
+- printf("%s\n", wpa_supplicant_version);
+- exitcode = 0;
++ if (optarg) {
++ exitcode = !has_feature(optarg);
++ } else {
++ printf("%s\n", wpa_supplicant_version);
++ exitcode = 0;
++ }
+ goto out;
+ case 'W':
+ params.wait_for_monitor++;
+--- /dev/null
++++ b/src/utils/build_features.h
+@@ -0,0 +1,17 @@
++#ifndef BUILD_FEATURES_H
++#define BUILD_FEATURES_H
++
++static inline int has_feature(const char *feat)
++{
++#ifdef IEEE8021X_EAPOL
++ if (!strcmp(feat, "eap"))
++ return 1;
++#endif
++#ifdef IEEE80211N
++ if (!strcmp(feat, "11n"))
++ return 1;
++#endif
++ return 0;
++}
++
++#endif /* BUILD_FEATURES_H */