jack2: use $(TARGET_MAKE_ENV) when calling $(MAKE)

In this case in particular it's $(TARGET_CONFIGURE_OPTS), which includes
$(TARGET_MAKE_ENV).

Signed-off-by: Gustavo Zacarias <gustavo.zacarias@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/jack2/jack2.mk

@@ -53,16 +53,22 @@ define JACK2_CONFIGURE_CMDS
 endef
 
 define JACK2_BUILD_CMDS
-	(cd $(@D); $(HOST_DIR)/usr/bin/python2 ./waf build -j $(PARALLEL_JOBS))
+	(cd $(@D); \
+		$(TARGET_CONFIGURE_OPTS) \
+		$(HOST_DIR)/usr/bin/python2 ./waf build -j $(PARALLEL_JOBS))
 endef
 
 define JACK2_INSTALL_TARGET_CMDS
-	(cd $(@D); $(HOST_DIR)/usr/bin/python2 ./waf --destdir=$(TARGET_DIR) \
+	(cd $(@D); \
+		$(TARGET_CONFIGURE_OPTS) \
+		$(HOST_DIR)/usr/bin/python2 ./waf --destdir=$(TARGET_DIR) \
 		install)
 endef
 
 define JACK2_INSTALL_STAGING_CMDS
-	(cd $(@D); $(HOST_DIR)/usr/bin/python2 ./waf --destdir=$(STAGING_DIR) \
+	(cd $(@D); \
+		$(TARGET_CONFIGURE_OPTS) \
+		$(HOST_DIR)/usr/bin/python2 ./waf --destdir=$(STAGING_DIR) \
 		install)
 endef