netsnmp: use the autoconf built by Buildroot

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/netsnmp/netsnmp.mk

@@ -58,7 +58,7 @@ endif
 
 $(NETSNMP_DIR)/.configured: $(NETSNMP_DIR)/.unpacked
 	(cd $(NETSNMP_DIR); rm -f config.cache; \
-		autoconf && \
+		$(AUTOCONF) && \
 		ac_cv_NETSNMP_CAN_USE_SYSCTL=yes \
 		$(NETSNMP_CONFIGURE_PERL_ENV) \
 		$(TARGET_CONFIGURE_OPTS) \
@@ -130,7 +130,7 @@ endif
 	$(INSTALL) -D -m 0644 $(NETSNMP_DIR)/agent/mibgroup/header_complex.h $(STAGING_DIR)/usr/include/net-snmp/agent/header_complex.h
 	$(INSTALL) -D -m 0755 package/netsnmp/S59snmpd $(TARGET_DIR)/etc/init.d/S59snmpd
 
-netsnmp: $(if $(BR2_PACKAGE_OPENSSL),openssl) $(TARGET_DIR)/usr/sbin/snmpd
+netsnmp: host-autoconf $(if $(BR2_PACKAGE_OPENSSL),openssl) $(TARGET_DIR)/usr/sbin/snmpd
 
 netsnmp-headers: $(TARGET_DIR)/usr/include/net-snmp/net-snmp-config.h
 	$(INSTALL) -d $(TARGET_DIR)/usr/include/net-snmp