[packages] strace: call the install target, re-remove the obsolete 2.6.21 test, remove the duplicated configure variable

git-svn-id: svn://svn.openwrt.org/openwrt/packages@19698 3c298f89-4303-0410-b956-a3cf2f4a3e73

utils/strace/Makefile

@@ -11,8 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
 PKG_NAME:=strace
 PKG_RELEASE:=3
 
-OLD_KERNEL=$(findstring y,$(foreach v,21 25,$(CONFIG_LINUX_2_6_$(v))))
-ifneq ($(OLD_KERNEL),)
+ifeq ($(CONFIG_LINUX_2_6_25),y)
   PKG_VERSION:=4.5.16
   PKG_MD5SUM:=77f66d09aa82981bb6d65fa19a2c1ba9
   PATCH_DIR:=patches-4.5.16
@@ -24,16 +23,11 @@ endif
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=@SF/$(PKG_NAME)
 
-PKG_FIXUP = libtool
+PKG_FIXUP:=libtool
+PKG_INSTALL:=1
 
 include $(INCLUDE_DIR)/package.mk
 
-CONFIGURE_VARS += \
-	ac_cv_header_linux_netlink_h=yes
-
-TARGET_CFLAGS += \
-	-I$(LINUX_DIR)/include
-
 define Package/strace
   SECTION:=utils
   CATEGORY:=Utilities
@@ -49,6 +43,9 @@ endef
 CONFIGURE_VARS += \
 	ac_cv_header_linux_netlink_h=yes
 
+TARGET_CFLAGS += \
+	-I$(LINUX_DIR)/include
+
 define Package/strace/install
 	$(INSTALL_DIR) $(1)/usr/bin
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/strace $(1)/usr/bin/