easycwmp的交叉編譯

時間 2019-12-12

標籤 easycwmp 交叉編譯简体版

原文原文鏈接

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email：642613208@qq.comgit

平臺：github

Linux version 2.6.32-279.el6.x86_64json

交叉編譯器路徑：/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-vim

開發板：FL2440bash

開發板運行內核：linux3.0curl

開發板文件系統：initramfs函數

easycwmp依賴的許多軟件的Makefile都是用cmake語法生成的，故簡單介紹一下要常常用到的幾個cmake語法：工具

1.LINK_DIRECTORIES：動態連接庫或靜態連接庫的搜索路徑，至關於gcc的-L參數

2.INCLUDE_DIRECTORIES:指定頭文件搜索路徑，至關於-I參數

3.TARGET_LINK_LIBRARIES(uci ubox)添加連接庫,相同於指定-l參數。
如：target_link_libraries(demo Hello) #將可執行文件與Hello鏈接成最終文件demo

4.find_library(THREAD_DB_LIBRARY NAMES thread_db PATHS /usr/lib/ /usr/local/lib/)

在目錄"/usr/lib"和"/usr/local/lib"下查找libthread_db.so，若是找到則把庫文件的絕對路徑賦給THREAD_DB_LIBRARY

1、準備工做

1.建立fl-easycwmp目錄用以存放安裝文件

[weishusheng@localhost ~]$ mkdir fl-easycwmp

2.建立install目錄

[weishusheng@localhost ~]$ cd fl-easycwmp/
[weishusheng@localhost fl-easycwmp]$ ls
[weishusheng@localhost fl-easycwmp]$ mkdir install
[weishusheng@localhost fl-easycwmp]$ ls
install

2、交叉編譯json-c

1.獲取json-c源文件

[weishusheng@localhost fl-easycwmp]$ git clone git://github.com/json-c/json-c.git ./json-c

2.建立build.sh

[weishusheng@localhost json-c]$ vim build.sh

#!/bin/bash
PRJ_PATH=`pwd`
#CROSS=/opt/buildroot-2011.11/arm920t/usr/bin/arm-linux-
CROSS=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-
make clean
#autoreconf -i
export CC=${CROSS}gcc
export CPP=${CROSS}cpp
export AS=${CROSS}as
export LD=${CROSS}ld
export AR=${CROSS}ar
export RANLIB=${CROSS}ranlib
export STRIP=${CROSS}strip
export ac_cv_func_malloc_0_nonnull=yes
export ac_cv_func_realloc_0_nonnull=yes
export ac_cv_have_decl_isinf=yes
export ac_cv_have_decl_isnan=yes
#export LDFLAGS += -lm
./configure --enable-rdrand --disable-dependency-tracking --with-PACKAGE --with-gnu-ld --with-pic --bu
ild=i686-pc-linux-gnu --host=arm-linux --prefix=${PRJ_PATH}/../install

順便說一下makefile裏cflags的-Wall -o2 -g

-Wall 是打開警告開關，-O表明默認優化，可選：-O0不優化，-O1低級優化，-O2中級優化，-O3高級優化，-Os代碼空間優化。
-g是生成調試信息，生成的可執行文件具備和源代碼關聯的可調試的信息；-pg是生成函數調用關係，函數執行時間等信息，將這些信息保存在gmon.out中，可用gprof命令進行查看

3.安裝json-c

[weishusheng@localhost json-c]$ sh build.sh

而後在生成的Makefile裏把修改LDFLAGS = -lm，注意每次修改後要make clean（make clean僅僅是清除以前編譯的可執行文件及配置文件。而make distclean要清除全部生成的文件。）

make

make install

3、安裝libubox

一、獲取libubox

[weishusheng@localhost fl-easycwmp]$ git clone git://nbd.name/luci2/libubox.git ./libubox

2.在工程主CMakeLists.txt 中首先加入以下語句：(##注意Linux第一個字母爲大寫，不然cmake不認識)

[weishusheng@localhost libubox]$ vim CMakeLists.txt

SET(CMAKE_SYSTEM_NAME Linux) #告訴編譯器你要交叉編譯，Linux是你要編譯過去的平臺
SET(TOOLCHAIN_DIR "/opt/buildroot-2012.08/arm920t/usr") #告訴編譯器交叉編譯器路徑
SET(CMAKE_FIND_ROOT_PATH ${TOOLCHAIN_DIR})   #告訴cmake查找的根目錄是什麼
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)   #告訴cmake怎麼查找編譯時的工具程序的位置
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY "/home/weishusheng/fl-easycwmp/install/lib/")   #告訴cmake怎麼查找編譯時的庫文件的位置
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)   #告訴cmake怎麼查找編譯時的頭文件的位置
SET(CMAKE_C_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-gcc)
SET(CMAKE_CXX_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-g++)
SET(CMAKE_INSTALL_PREFIX "/home/weishusheng/fl-easycwmp/install/")

注意：

ONLY表示只在CMAKE_FIND_ROOT_PATH下找

BOTH表示能夠在CMAKE_FIND_ROOT_PATH下找，也能夠在系統目錄下找

NEVER表示不查找

3.生成Makefile

[weishusheng@localhost libubox]$ cmake CMakeLists.txt -DBUILD_LUA=OFF

4.make

錯誤解決：

錯誤1

/home/weishusheng/fl-easycwmp/libubox/blobmsg_json.c: In function '__blobmsg_add_json':
/home/weishusheng/fl-easycwmp/libubox/blobmsg_json.c:78:2: error: implicit declaration of function 'is_error'

分析：is_error沒有定義，在pc上編譯時也遇到這個問題，咱們知道他的定義爲#define is_error(ptr) (ptr == NULL)，因而添加定義

[weishusheng@localhost libubox]$ vim /home/weishusheng/fl-easycwmp/libubox/blobmsg_json.c

#include "blobmsg.h"
#include "blobmsg_json.h"
#define is_error(ptr) (ptr == NULL)

錯誤2

cannot find -ljson-c

在CMakeLists.txt裏指定json-c庫路徑

[weishusheng@localhost libubox]$ vim CMakeLists.txt

LINK_DIRECTORIES(/home/weishusheng/fl-easycwmp/install/lib/)

錯誤3

/home/weishusheng/fl-easycwmp/libubox/jshn.c: In function 'jshn_parse':
/home/weishusheng/fl-easycwmp/libubox/jshn.c:162:2: error: implicit declaration of function 'is_error'

添加定義

#define is_error(ptr) (ptr == NULL)

/home/weishusheng/cross_easycwmp/install/lib/libjson-c.so: undefined reference to `__isnan'
/home/weishusheng/cross_easycwmp/install/lib/libjson-c.so: undefined reference to `__isinf'

這個問題讓我抓狂，但大家按個人博客作下來不會出現這個問題，由於我在前面寫json-c的安裝時爲大家解決了，若是有遇到相似問題的，能夠嘗試在編譯json-c時加上

export ac_cv_have_decl_isinf=yes
export ac_cv_have_decl_isnan=yes

並鏈接上數學庫即LDFLAGS+=-lm

4、安裝uci

1.獲取uci

[weishusheng@localhost fl-easycwmp]$ git clone git://nbd.name/uci.git ./uci

2.修改CMakeList.txt

[weishusheng@localhost uci]$ vim CMakeLists.txt
SET(CMAKE_SYSTEM_NAME Linux)
SET(TOOLCHAIN_DIR "/opt/buildroot-2012.08/arm920t/usr")
SET(CMAKE_FIND_ROOT_PATH ${TOOLCHAIN_DIR})
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
SET(CMAKE_C_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-gcc)
SET(CMAKE_CXX_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-g++)
SET(CMAKE_INSTALL_PREFIX "/home/weishusheng/fl-easycwmp/install/")

cmake_minimum_required(VERSION 2.6)

3.生成makefile

[weishusheng@localhost uci]$ cmake CMakeLists.txt -DBUILD_LUA=OFF

4.make

/opt/buildroot-2012.08/arm920t/usr/lib/gcc/arm-unknown-linux-uclibcgnueabi/4.5.4/../../../../arm-unknown-linux-uclibcgnueabi/bin/ld: cannot find -lubox

在CMakeList.txt里加入LINK_DIRECTORIES(/home/weishusheng/fl-easycwmp/install/lib/)，問題解決

5.make install

5、安裝ubus

1.獲取ubus

git clone git://nbd.name/luci2/ubus.git ./ubus

2.修改CMakeList.txt

[weishusheng@localhost ubus]$ vim CMakeLists.txt
SET(CMAKE_SYSTEM_NAME Linux)
SET(TOOLCHAIN_DIR "/opt/buildroot-2012.08/arm920t/usr")
SET(CMAKE_FIND_ROOT_PATH ${TOOLCHAIN_DIR})
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
SET(CMAKE_C_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-gcc)
SET(CMAKE_CXX_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-g++)
SET(CMAKE_INSTALL_PREFIX "/home/weishusheng/fl-easycwmp/install/")

3.生成makefile

[weishusheng@localhost ubus]$ cmake CMakeLists.txt -DBUILD_LUA=OFF

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
json
linked by target "cli" in directory /home/weishusheng/fl-easycwmp/ubus

解決辦法：在CMakeList.txt裏指定json庫路徑，經過修改SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY）爲

SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY "/home/weishusheng/fl-easycwmp/install/lib")可解決。

4.make

錯誤：cannot find -lubox

解決辦法：在CMakeLists里加上LINK_DIRECTORIES(/home/weishusheng/fl-easycwmp/install/lib)

錯誤：json/json.h: No such file or directory

解決辦法：交叉編譯時默認標準頭文件是交叉編譯器路徑下的，能夠用echo 'main(){}'|/opt/buildroot-

2012.08/arm920t/usr/bin/arm-linux-gcc -E -v - 命令進行查看，咱們把須要用到的頭文件加到上訴命令找到的位置就能夠
了，另外，交叉編譯會到系統默認標準庫目錄下找庫文件，這會致使格式不符合，咱們須要用-L及-l指定庫文件

[weishusheng@localhost json-c]$ pwd
/home/weishusheng/fl-easycwmp/install/include/json-c
[weishusheng@localhost json-c]$ sudo mkdir /opt/buildroot-2012.08/arm920t/usr/arm-unknown-linux-
uclibcgnueabi/sysroot/usr/include/json
[weishusheng@localhost json-c]$ sudo cp * /opt/buildroot-2012.08/arm920t/usr/arm-unknown-linux-
uclibcgnueabi/sysroot/usr/include/json
[weishusheng@localhost json-c]$

6、安裝microxml

1.獲取源文件

[weishusheng@localhost fl-easycwmp]$ git clone git://dev.freecwmp.org/microxml ./microxml

二、創建build.sh文件

[weishusheng@localhost microxml]$ vim build.sh
#!/bin/bash
PRJ_PATH=`pwd`
#CROSS=/opt/buildroot-2011.11/arm920t/usr/bin/arm-linux-
CROSS=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-
make distclean
autoreconf -i
export CC=${CROSS}gcc
export CPP=${CROSS}cpp
export AS=${CROSS}as
export LD=${CROSS}ld
export AR=${CROSS}ar
export RANLIB=${CROSS}ranlib
export STRIP=${CROSS}strip
./configure --host=arm-linux --prefix=${PRJ_PATH}/../install
make && make install

3.執行

[weishusheng@localhost microxml]$ sh build.sh

//7、把shflags.sh放到/usr/share/shflags/目錄裏

7、最後終於要編譯easycwmp了

1.獲取源文件

[weishusheng@localhost fl-easycwmp]$ wget http://easycwmp.org/download/easycwmp-1.0.5.tar.gz

2.解壓，把easycwmp-1.0.5改名爲easycwmp並進入該目錄

[weishusheng@localhost fl-easycwmp]$ cp ../cross_easycwmp/easycwmp-1.0.5.tar.gz .

[weishusheng@localhost fl-easycwmp]$ mv easycwmp-1.0.5 easycwmp
[weishusheng@localhost fl-easycwmp]$ cd easycwmp

3.生成makefile

[weishusheng@localhost easycwmp]$ autoreconf -i

3.生成makefile

[weishusheng@localhost easycwmp]$CC=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-gcc AR=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-ar LD=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-ld AS=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-as RANLIB=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-ranlib CPP=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-cpp ./configure --host=arm-linux --prefix=/home/weishusheng/myfl2440/cwmp/fl-easycwmp/install MICROXML_CFLAGS="-I/home/weishusheng/myfl2440/cwmp/fl-easycwmp/install/include -D_THREAD_SAFE -D_REENTRANT" MICROXML_LIBS="-L/home/weishusheng/myfl2440/cwmp/fl-easycwmp/install/lib -lmicroxml -lpthread" --enable-debug --enable-devel --enable-acs=multi --enable-jsonc=1 --with-uci-include-path=/home/weishusheng/myfl2440/cwmp/fl-easycwmp/uci/

4.[weishusheng@localhost easycwmp]$ make

錯誤：curl/curl.h: No such file or directory

解決辦法：a、先交叉編譯curl（下載地址http://curl.haxx.se/download.html），

　　　　 b、[weishusheng@localhost include]$ sudo mkdir /opt/buildroot-2012.08/arm920t/usr/arm-unknown-linux-

uclibcgnueabi/sysroot/usr/include/curl

c、[weishusheng@localhost fl-easycwmp]$ tar -xzf curl-7.41.0.tar.gz

d、vim build.sh

#!/bin/bash
PRJ_PATH=`pwd`
#CROSS=/opt/buildroot-2011.11/arm920t/usr/bin/arm-linux-
CROSS=/opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-
make distclean
autoreconf -i
export CC=${CROSS}gcc
export CPP=${CROSS}cpp
export AS=${CROSS}as
export LD=${CROSS}ld
export AR=${CROSS}ar
export RANLIB=${CROSS}ranlib
export STRIP=${CROSS}strip
./configure --host=arm-linux --prefix=${PRJ_PATH}/../install
make && make install

e.把頭文件複製到相應位置

[weishusheng@localhost curl]$ pwd
/home/weishusheng/fl-easycwmp/install/include/curl
[weishusheng@localhost curl]$ ls
curlbuild.h curlrules.h easy.h multi.h typecheck-gcc.h
curl.h curlver.h mprintf.h stdcheaders.h

[weishusheng@localhost curl]$ sudo cp * /opt/buildroot-2012.08/arm920t/usr/arm-unknown-linux-uclibcgnueabi/sysroot/usr/include/curl

錯誤：src/ubus.c:14:21: fatal error: libubus.h: No such file or directory
解決辦法：

[weishusheng@localhost ubus]$ pwd
/home/weishusheng/fl-easycwmp/ubus
[weishusheng@localhost ubus]$ sudo cp libubus.h /opt/buildroot-2012.08/arm920t/usr/arm-unknown-linux-
uclibcgnueabi/sysroot/usr/include/

錯誤：ubusmsg.h: No such file or directory
解決辦法：

[weishusheng@localhost ubus]$ pwd
/home/weishusheng/cross_easycwmp/ubus

[weishusheng@localhost ubus]$ sudo cp ubusmsg.h /opt/buildroot-2012.08/arm920t/usr/arm-unknown-linux-
uclibcgnueabi/sysroot/usr/include/

錯誤：ubus_common.h: No such file or directory

解決辦法：

[weishusheng@localhost ubus]$ sudo cp ubus_common.h /opt/buildroot-2012.08/arm920t/usr/arm-unknown-linux-
uclibcgnueabi/sysroot/usr/include/

錯誤：src/json.c:42: undefined reference to `is_error'

解決辦法：

vim src/json.c

#define is_error(ptr) (ptr == NULL)

[weishusheng@localhost easycwmp]$ make

[weishusheng@localhost easycwmp]$ make install