Avoid rebuilding 'readline-5.1'

package/readline/readline.mk

@@ -9,7 +9,9 @@ READLINE_SOURCE:=readline-$(READLINE_VERSION).tar.gz
 READLINE_DIR:=$(BUILD_DIR)/readline-$(READLINE_VERSION)
 READLINE_CAT:=$(ZCAT)
 READLINE_BINARY:=libhistory.a
+READLINE_SHARED_BINARY:=libhistory.so
 READLINE_TARGET_BINARY:=lib/$(READLINE_BINARY)
+READLINE_TARGET_SHARED_BINARY:=lib/$(READLINE_SHARED_BINARY)
 
 $(DL_DIR)/$(READLINE_SOURCE):
 	$(WGET) -P $(DL_DIR) $(READLINE_SITE)/$(READLINE_SOURCE)
@@ -48,6 +50,7 @@ $(READLINE_DIR)/.configured: $(READLINE_DIR)/.unpacked
 
 $(READLINE_DIR)/$(READLINE_BINARY): $(READLINE_DIR)/.configured
 	$(MAKE) -C $(READLINE_DIR)
+	ls $(READLINE_DIR)/$(READLINE_BINARY)
 	touch -c $@
 
 $(STAGING_DIR)/$(READLINE_TARGET_BINARY): $(READLINE_DIR)/.configured
@@ -61,7 +64,7 @@ $(STAGING_DIR)/usr/include/readline/readline.h: $(READLINE_DIR)/$(READLINE_BINAR
 	touch -c $@
 
 # Install to Target directory
-$(TARGET_DIR)/$(READLINE_TARGET_BINARY): $(READLINE_DIR)/$(READLINE_BINARY)
+$(TARGET_DIR)/$(READLINE_TARGET_SHARED_BINARY): $(READLINE_DIR)/$(READLINE_BINARY)
 	# make sure we don't end up with lib{readline,history}...old
 	$(MAKE1) DESTDIR=$(TARGET_DIR) -C $(READLINE_DIR) uninstall
 	BUILD_CC=$(TARGET_CC) HOSTCC="$(HOSTCC)" CC=$(TARGET_CC) \
@@ -77,7 +80,7 @@ readline-clean:
 readline-dirclean:
 	rm -rf $(READLINE_DIR)
 
-readline-target: $(TARGET_DIR)/$(READLINE_TARGET_BINARY)
+readline-target: $(TARGET_DIR)/$(READLINE_TARGET_SHARED_BINARY)
 
 readline-target-clean:
 	$(MAKE1) DESTDIR=$(TARGET_DIR) -C $(READLINE_DIR) uninstall