openwrt添加自定义package APP
openwrt 和 buildroot类似，添加自己的app应用程序，参照package里面的模板，建立自己的app
在目录openwrt/package/下，建立app文件夹，存放自己的应用，可仿照openwrt/package/utils/fbtest
eric@eric-PC:~/Documents/work/mt7628/openwrt/package/utils$ tree fbtest/
fbtest/
├── Makefile
└── src
├── fbtest.c
└── Makefile
1 directory, 3 files
新建应用helloword
eric@eric-PC:~/Documents/work/mt7628/openwrt/package/app$ ls -l
总用量 4
drwxr-xr-x 3 eric eric 4096 7月 13 16:56 helloword
eric@eric-PC:~/Documents/work/mt7628/openwrt/package/app$ tree helloword/
helloword/
├── Makefile
└── src
├── helloword.c
└── Makefile
1 directory, 3 files
顶层Makefile 供openwrt调用
Makefile
#
# Copyright (C) 2012 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=helloword
PKG_RELEASE:=1
# PKG_INSTALL:=1
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(INCLUDE_DIR)/package.mk
define Package/$(PKG_NAME)
SECTION:=app
CATEGORY:=app
TITLE:=test app
DEPENDS:=
endef
define Build/Configure
endef
define Build/Compile
$(MAKE) -C $(PKG_BUILD_DIR) \
CC="$(TARGET_CC)" \
CFLAGS="$(TARGET_CFLAGS) -Wall" \
LDFLAGS="$(TARGET_LDFLAGS)"
endef
define Package/$(PKG_NAME)/install
$(INSTALL_DIR) $(1)/usr/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/$(PKG_NAME) $(1)/usr/bin/
endef
$(eval $(call BuildPackage,$(PKG_NAME)))
src目录下，保存helloword源码文件及Makefile
helloword.c
#include Makefile
CC = gcc
CFLAGS = -Wall
OBJS = helloword.o
all: helloword
%.o: %.c
$(CC) $(CFLAGS) -c -o $@ $<
helloword: $(OBJS)
$(CC) -o $@ $(OBJS)
clean:
rm -f rbcfg *.o
package单独编译helloword，顶层目录执行指令：
make package/app/helloword/compile
eric@eric-PC:~/Documents/work/mt7628/openwrt$ make package/app/helloword/compile
find: 'package/feeds/luci/luci-theme-argon/luci-theme-argon': Too many levels of symbolic links
WARNING: Makefile 'package/feeds/packages/apache/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/telephony/asterisk-16.x/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/avro/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/gnunet/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/gnunet/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/gnunet/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/jose/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/telephony/kamailio-5.x/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/telephony/kamailio-5.x/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/libsearpc/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/network/utils/nftables/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/samba4/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/seafile-ccnet/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/seafile-server/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/ulogd/Makefile' has a dependency on 'jansson', which does not exist
WARNING: Makefile 'package/feeds/packages/yara/Makefile' has a dependency on 'jansson', which does not exist
make[1] package/app/helloword/compile
make[2] -C package/libs/toolchain compile
make[2] -C package/app/helloword compile
编译完成后，openwrt/bin/packages/mipsel_24kc/base下可看到对应的ipk文件生成
eric@eric-PC:~/Documents/work/mt7628/openwrt/bin/packages/mipsel_24kc/base$ ls *helloword* -l
-rw-r--r-- 1 eric eric 2570 7月 16 11:16 helloword_1_mipsel_24kc.ipk
mt7628/openwrt/build_dir/target-mipsel_24kc_glibc/helloword目录下，也同样生成了可执行的helloword
eric@eric-PC:~/Documents/work/mt7628/openwrt/build_dir/target-mipsel_24kc_glibc/helloword$ tree
.
├── helloword
├── helloword.c
├── helloword.o
├── ipkg-mipsel_24kc
│ └── helloword
│ ├── CONTROL
│ │ ├── control
│ │ ├── postinst
│ │ └── prerm
│ └── usr
│ └── bin
│ └── helloword
└── Makefile
5 directories, 8 files
下面是openwrt官方Makefile模板，参考即可
include $(TOPDIR)/rules.mk
# Name, version and release number
# The name and version of your package are used to define the variable to point to the build directory of your package: $(PKG_BUILD_DIR)
PKG_NAME:=helloworld
PKG_VERSION:=1.0
PKG_RELEASE:=1
# Source settings (i.e. where to find the source codes)
# This is a custom variable, used below
SOURCE_DIR:=/home/buildbot/helloworld
include $(INCLUDE_DIR)/package.mk
# Package definition; instructs on how and where our package will appear in the overall configuration menu ('make menuconfig')
define Package/helloworld
SECTION:=examples
CATEGORY:=Examples
TITLE:=Hello, World!
endef
# Package description; a more verbose description on what our package does
define Package/helloworld/description
A simple "Hello, world!" -application.
endef
# Package preparation instructions; create the build directory and copy the source code.
# The last command is necessary to ensure our preparation instructions remain compatible with the patching system.
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
cp $(SOURCE_DIR)/* $(PKG_BUILD_DIR)
$(Build/Patch)
endef
# Package build instructions; invoke the target-specific compiler to first compile the source file, and then to link the file into the final executable
define Build/Compile
$(TARGET_CC) $(TARGET_CFLAGS) -o $(PKG_BUILD_DIR)/helloworld.o -c $(PKG_BUILD_DIR)/helloworld.c
$(TARGET_CC) $(TARGET_LDFLAGS) -o $(PKG_BUILD_DIR)/$1 $(PKG_BUILD_DIR)/helloworld.o
endef
# Package install instructions; create a directory inside the package to hold our executable, and then copy the executable we built previously into the folder
define Package/helloworld/install
$(INSTALL_DIR) $(1)/usr/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/helloworld $(1)/usr/bin
endef
# This command is always the last, it uses the definitions and variables we give above in order to get the job done
$(eval $(call BuildPackage,helloworld))
如果源码已经用交叉编译器在宿主机上编译完成，则可直接将生成的可执行文件，安装在系统中。
例如app目录下mqttuser/files/ali是编译好的可执行文件。
eric@eric-PC:~/Documents/work/mt7628/openwrt/package/app$ tree
.
├── helloword
│ ├── Makefile
│ └── src
│ ├── helloword.c
│ └── Makefile
└── mqttuser
├── files
│ └── ali
└── Makefile
4 directories, 5 files
其中，Makefile文件内容：
#
# Copyright (C) 2012 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=mqttuser
PKG_RELEASE:=1
# PKG_INSTALL:=1
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
include $(INCLUDE_DIR)/package.mk
define Package/$(PKG_NAME)
SECTION:=app
CATEGORY:=app
TITLE:=mqtt user
DEPENDS:=
endef
# define Build/Configure
# mkdir -p $(PKG_BUILD_DIR)
# $(CP) ./files/ali $(PKG_BUILD_DIR)
# endef
define Build/Compile
$(CP) ./files/* $(PKG_BUILD_DIR)
# $(MAKE) -C $(PKG_BUILD_DIR) \
# CC="$(TARGET_CC)" \
# CFLAGS="$(TARGET_CFLAGS) -Wall" \
# LDFLAGS="$(TARGET_LDFLAGS)"
endef
define Package/$(PKG_NAME)/install
# $(INSTALL_DIR) $(1)/usr/lib
# $(INSTALL_BIN) $(PKG_BUILD_DIR)/uhttpd_lua.so $(1)/usr/lib/
$(INSTALL_DIR) $(1)/usr/bin
$(INSTALL_BIN) $(PKG_BUILD_DIR)/ali $(1)/usr/bin
endef
$(eval $(call BuildPackage,$(PKG_NAME)))
以上，编译完成后，可执行文件ali，则自动放在usr/bin目录下！
仅此记录