package/bind: enable static build

Static build has been disabled in 2014 with commit
6045904752 however bind can be built
statically thanks to --without-dlopen so enable it back

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/bind/bind.mk

@@ -28,7 +28,6 @@ BIND_CONF_OPTS = \
 	--with-libjson=no \
 	--with-randomdev=/dev/urandom \
 	--enable-epoll \
-	--with-libtool \
 	--with-gssapi=no \
 	--enable-filter-aaaa
 
@@ -54,12 +53,13 @@ BIND_CONF_OPTS += --with-libxml2=no
 endif
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
-BIND_DEPENDENCIES += openssl
+BIND_DEPENDENCIES += host-pkgconf openssl
 BIND_CONF_OPTS += \
 	--with-openssl=$(STAGING_DIR)/usr \
 	--with-ecdsa=yes \
 	--with-eddsa=no \
 	--with-aes=yes
+BIND_CONF_ENV += LIBS=`$(PKG_CONFIG_HOST_BINARY) --libs openssl`
 # GOST cipher support requires openssl extra engines
 ifeq ($(BR2_PACKAGE_OPENSSL_ENGINES),y)
 BIND_CONF_OPTS += --with-gost=yes
@@ -84,6 +84,16 @@ else
 BIND_CONF_OPTS += --with-readline=no
 endif
 
+ifeq ($(BR2_STATIC_LIBS),y)
+BIND_CONF_OPTS += \
+	--without-dlopen \
+	--without-libtool
+else
+BIND_CONF_OPTS += \
+	--with-dlopen \
+	--with-libtool
+endif
+
 define BIND_TARGET_REMOVE_SERVER
 	rm -rf $(addprefix $(TARGET_DIR)/usr/sbin/, $(BIND_TARGET_SERVER_SBIN))
 endef