openwrt/package/network/services/hostapd/patches/420-indicate-features.patch

--- a/hostapd/main.c
+++ b/hostapd/main.c
@@ -15,6 +15,7 @@
 #include "utils/common.h"
 #include "utils/eloop.h"
 #include "utils/uuid.h"
+#include "utils/build_features.h"
 #include "crypto/random.h"
 #include "crypto/tls.h"
 #include "common/version.h"
@@ -560,7 +561,7 @@ int main(int argc, char *argv[])
 
 	wpa_supplicant_event = hostapd_wpa_event;
 	for (;;) {
-		c = getopt(argc, argv, "b:Bde:f:hKP:Ttu:vg:G:");
+		c = getopt(argc, argv, "b:Bde:f:hKP:Ttu:g:G:v::");
 		if (c < 0)
 			break;
 		switch (c) {
@@ -597,6 +598,8 @@ int main(int argc, char *argv[])
 			break;
 #endif /* CONFIG_DEBUG_LINUX_TRACING */
 		case 'v':
+			if (optarg)
+				exit(!has_feature(optarg));
 			show_version();
 			exit(1);
 			break;
--- a/wpa_supplicant/main.c
+++ b/wpa_supplicant/main.c
@@ -12,6 +12,7 @@
 #endif /* __linux__ */
 
 #include "common.h"
+#include "build_features.h"
 #include "wpa_supplicant_i.h"
 #include "driver_i.h"
 #include "p2p_supplicant.h"
@@ -176,7 +177,7 @@ int main(int argc, char *argv[])
 
 	for (;;) {
 		c = getopt(argc, argv,
-			   "b:Bc:C:D:de:f:g:G:hH:i:I:KLm:No:O:p:P:qsTtuvW");
+			   "b:Bc:C:D:de:f:g:G:hH:i:I:KLm:No:O:p:P:qsTtuv::W");
 		if (c < 0)
 			break;
 		switch (c) {
@@ -279,8 +280,12 @@ 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 */