check_c_source_compiles(
	"#include <linux/nl80211.h>
	int main() {
		int x = NL80211_FREQUENCY_ATTR_MAX_TX_POWER;
		x = NL80211_ATTR_SUPPORTED_IFTYPES;
		x = NL80211_ATTR_SUPPORTED_COMMANDS;
		x = NL80211_ATTR_WIPHY_FREQ;
		x = NL80211_CHAN_NO_HT;
	}"
	HAVE_NL80211
)