[Buildroot] [PATCH v4 3/5] package/wpa_supplicant: configure wifi on systemd when enabled

[Angelo Compagnucci]

Configure a default basic wifi setup able to automatically connect
to the selected access point.

Signed-off-by: Angelo Compagnucci <angelo at amarulasolutions.com>
---
 package/wpa_supplicant/wpa_supplicant.mk | 10 ++++++++++
 system/Config.in                         |  1 +
 2 files changed, 11 insertions(+)

diff --git a/package/wpa_supplicant/wpa_supplicant.mk b/package/wpa_supplicant/wpa_supplicant.mk
index 60ae290e26..8611fc6577 100644
--- a/package/wpa_supplicant/wpa_supplicant.mk
+++ b/package/wpa_supplicant/wpa_supplicant.mk
@@ -277,6 +277,15 @@ define WPA_SUPPLICANT_ENABLE_WIFI
 		echo "}"; \
 	) >> $(TARGET_DIR)/etc/wpa_supplicant.conf
 endef
+define WPA_SUPPLICANT_WIFI_INSTALL_INIT_SYSTEMD
+	$(INSTALL) -m 0755 -d $(TARGET_DIR)/etc/wpa_supplicant/
+	ln -sf ../wpa_supplicant.conf \
+		$(TARGET_DIR)/etc/wpa_supplicant/wpa_supplicant-$(BR2_SYSTEM_DHCP).conf
+endef
+define WPA_SUPPLICANT_WIFI_INSTALL_INIT_SYSTEMD_PRESET
+	$(HOST_DIR)/bin/systemctl --root=$(TARGET_DIR) preset wpa_supplicant\@$(BR2_SYSTEM_DHCP).service
+endef
+SYSTEMD_ROOTFS_PRE_CMD_HOOKS += WPA_SUPPLICANT_WIFI_INSTALL_INIT_SYSTEMD_PRESET
 endif
 
 define WPA_SUPPLICANT_INSTALL_TARGET_CMDS
@@ -304,6 +313,7 @@ define WPA_SUPPLICANT_INSTALL_INIT_SYSTEMD
 		$(TARGET_DIR)/usr/lib/systemd/system/wpa_supplicant-wired at .service
 	$(INSTALL) -D -m 644 $(WPA_SUPPLICANT_PKGDIR)/50-wpa_supplicant.preset \
 		$(TARGET_DIR)/usr/lib/systemd/system-preset/50-wpa_supplicant.preset
+	$(WPA_SUPPLICANT_WIFI_INSTALL_INIT_SYSTEMD)
 endef
 
 $(eval $(generic-package))
diff --git a/system/Config.in b/system/Config.in
index 647072b965..761a5a95c2 100644
--- a/system/Config.in
+++ b/system/Config.in
@@ -421,6 +421,7 @@ comment "automatic network configuration via DHCP needs ifupdown or busybox or n
 config BR2_SYSTEM_CONNECT_WIFI
 	bool "Connect to a default wifi access point"
 	depends on BR2_SYSTEM_DHCP != "" && BR2_PACKAGE_WPA_SUPPLICANT
+	select BR2_PACKAGE_WPA_SUPPLICANT_CTRL_IFACE if BR2_PACKAGE_SYSTEMD
 
 config BR2_SYSTEM_CONNECT_WIFI_SSID
 	string "Access point SSID"
-- 
2.25.1