解决Python交叉编译后，键盘方向键乱码的问题

参考

概述

前面几篇博文介绍了Python交叉编译到ARM开发板上面，在使用的时候遇到一个问题，就是当按下键盘上面的方向键的时候看到的都是乱码。

平台

主机： ubuntu14.04 64bit

开发板： qemu + aarch64 （参考： http://www.cnblogs.com/pengdonglin137/p/6442583.html）

工具链： aarch64-linux-gnu-gcc (gcc version 4.9.1 20140529) 用于编译aarch64上面运行的程序

Python版本： Python-3.6.0 和 Python-2.7.13

解决

1、下载readline和termcap的源码

readline的下载链接：

http://files.cnblogs.com/files/pengdonglin137/readline-7.0.tar.gz

或者 http://ftp.gnu.org/gnu/readline/readline-7.0.tar.gz

termcap的下载链接：

http://files.cnblogs.com/files/pengdonglin137/termcap-1.3.1.tar.gz

或者 http://ftp.gnu.org/gnu/termcap/termcap-1.3.1.tar.gz

2、交叉编译

readline

解压：

1 tar -xf readline-7.0.tar.gz
2 mkdir aarch64
3 cd aarch64

配置、编译和安装 mk.sh：

1 #!/bin/bash
2 
3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
4 
5 ../readline-7.0/configure --host=aarch64-linux-gnu 
6     --prefix=`pwd`
7 
8 make -j4
9 make install

termcap

termcap编译稍微麻烦一点，需要手动修改configure生成的Makefile文件。

解压：

1 tar -xf termcap-1.3.1.tar.gz
2 mkdir aarch64
3 cd aarch64

配置 mk1_conf.sh：

1 #!/bin/bash
2 
3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
4 
5 ../termcap-1.3.1/configure --host=aarch64-linux-gnu 
6     --prefix=`pwd`

修改Makefile：

 1 --- Makefile.orgin    2017-03-24 15:50:24.557379472 +0800
 2 +++ Makefile    2017-03-24 15:50:32.749379210 +0800
 3 @@ -21,9 +21,11 @@
 4  srcdir = ../termcap-1.3.1
 5  VPATH = ../termcap-1.3.1
 6  
 7 -CC = gcc
 8 -AR = ar
 9 -RANLIB = ranlib
10 +cross_compile = aarch64-linux-gnu-
11 +
12 +CC = ${cross_compile}gcc
13 +AR = ${cross_compile}ar
14 +RANLIB = ${cross_compile}ranlib
15  
16  INSTALL = /usr/bin/install -c
17  INSTALL_DATA = ${INSTALL} -m 644

即需要手动将修改工具链。

编译安装 mk2_make.sh：

1 #!/bin/bash
2 
3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
4 
5 make -j4
6 make install

3、配置Python3

修改mk1_conf.sh，增加readline和termcap的lib和include路径

 1 #!/bin/bash
 2 
 3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
 4 
 5 ../Python-3.6.0/configure 
 6     --host=aarch64-linux-gnu 
 7     --build=aarch64 
 8     --prefix=`pwd` 
 9     --enable-ipv6 
10     --enable-shared 
11     ac_cv_file__dev_ptmx="yes" 
12     ac_cv_file__dev_ptc="no" 
13     LDFLAGS="-L/home/pengdonglin/src/qemu/python_cross_compile/SQlite/aarch64/lib 
14     -L/home/pengdonglin/src/qemu/python_cross_compile/Readline/aarch64/lib 
15     -L/home/pengdonglin/src/qemu/python_cross_compile/Termcap/aarch64/lib" 
16     CPPFLAGS="-I/home/pengdonglin/src/qemu/python_cross_compile/SQlite/aarch64/include 
17     -I/home/pengdonglin/src/qemu/python_cross_compile/Readline/aarch64/include 
18     -I/home/pengdonglin/src/qemu/python_cross_compile/Termcap/aarch64/include"

修改完成之后，执行mk1_conf.sh

修改该Module/Setup文件

 1 --- Setup.origin    2017-03-24 15:54:52.609370903 +0800
 2 +++ Setup    2017-03-24 15:09:46.781457397 +0800
 3 @@ -164,7 +164,7 @@
 4  # it, depending on your system -- see the GNU readline instructions.
 5  # It's okay for this to be a shared library, too.
 6  
 7 -#readline readline.c -lreadline -ltermcap
 8 +readline readline.c -lreadline -ltermcap
 9  
10  
11  # Modules that should always be present (non UNIX dependent)

即将readline这一行取消注释

编译安装 mk2_make.sh

1 #!/bin/bash
2 
3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
4 
5 make -j4
6 make install

4、配置Python2

Python2跟Python3的处理方法稍有不同。

修改mk1_conf.sh，增加readline和termcap的lib和include路径

 1 #!/bin/bash
 2 
 3 export PATH=/home/pengdonglin/src/qemu/aarch32/arm-2014.05/bin:$PATH
 4 
 5 ../Python-2.7.13/configure --prefix=`pwd` 
 6     --host=arm-none-linux-gnueabi 
 7     --build=x86_64-linux-gnu 
 8     --enable-ipv6 
 9     --enable-shared 
10     ac_cv_file__dev_ptmx="yes" 
11     ac_cv_file__dev_ptc="no" 
12     LDFLAGS="-L/home/pengdonglin/src/qemu/python_cross_compile/SQlite/aarch32/lib 
13     -L/home/pengdonglin/src/qemu/python_cross_compile/Readline/aarch32/lib 
14     -L/home/pengdonglin/src/qemu/python_cross_compile/Termcap/aarch32/lib" 
15     CPPFLAGS="-I/home/pengdonglin/src/qemu/python_cross_compile/SQlite/aarch32/include 
16     -I/home/pengdonglin/src/qemu/python_cross_compile/Readline/aarch32/include 
17     -I/home/pengdonglin/src/qemu/python_cross_compile/Termcap/aarch32/include" 
18     LDLAST="-L/home/pengdonglin/src/qemu/python_cross_compile/Readline/aarch32/lib 
19     -L/home/pengdonglin/src/qemu/python_cross_compile/Termcap/aarch32/lib"

跟Python3一样，添加readline和termcap的include和lib路径，此外，还需要手动修改LDLAST的值，将readline和termcap的lib的路径添加到其中，否则在编译的时候会提示找不到l-lreadline和-ltermcap，然后执行./mk1_conf.sh

修改Modules/Setup

 1 --- Setup.orig    2017-03-24 16:44:37.121275501 +0800
 2 +++ Setup    2017-03-24 15:18:11.845441252 +0800
 3 @@ -163,7 +163,7 @@
 4  # it, depending on your system -- see the GNU readline instructions.
 5  # It's okay for this to be a shared library, too.
 6  
 7 -#readline readline.c -lreadline -ltermcap
 8 +readline readline.c -lreadline -ltermcap
 9  
10  
11  # Modules that should always be present (non UNIX dependent):

编译 mk2_make.sh

 1 #!/bin/bash
 2 
 3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
 4 
 5 make HOSTPYTHON=../x86_64/python 
 6     HOSTPGEN=../x86_64/Parser/pgen 
 7     BLDSHARED="aarch64-linux-gnu-gcc -shared" 
 8     CROSS_COMPILE=aarch64-linux-gnu- 
 9     CROSS_COMPILE_TARGET=yes 
10     HOSTARCH=aarch64-linux-gnu 
11     BUILDARCH=x86_64-linux-gnu 
12     -j4

安装 mk3_install.sh

1 #!/bin/bash
2 
3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
4 
5 make install HOSTPYTHON=../x86_64/python 
6     BLDSHARED="aarch64-linux-gnu-gcc -shared" 
7     CROSS_COMPILE=arm-none-linux-gnueabi- 
8     CROSS_COMPILE_TARGET=yes 
9     prefix=`pwd`

5、修改制作ramdisk的脚本 mk_ramdisk.sh

 1 #!/bin/bash
 2 
 3 export PATH=/home/pengdonglin/src/qemu/aarch64/gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/bin:$PATH
 4 
 5 sudo rm -rf rootfs
 6 sudo rm -rf tmpfs
 7 sudo rm -rf ramdisk*
 8 
 9 sudo mkdir rootfs
10 sudo cp ../busybox-1.24.2/_install/*  rootfs/ -raf
11 
12 sudo mkdir -p rootfs/proc/
13 sudo mkdir -p rootfs/sys/
14 sudo mkdir -p rootfs/tmp/
15 sudo mkdir -p rootfs/root/
16 sudo mkdir -p rootfs/var/
17 sudo mkdir -p rootfs/mnt/
18 
19 sudo cp etc rootfs/ -arf
20 sudo mkdir -p rootfs/lib
21 
22 sudo cp -arf ../gcc-linaro-aarch64-linux-gnu-4.9-2014.07_linux/aarch64-linux-gnu/libc/lib/aarch64-linux-gnu/* rootfs/lib/
23 
24 #python
25 version=3
26 sudo mkdir -p rootfs/usr
27 pushd rootfs/usr
28 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/lib .
29 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/include .
30 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/bin .
31 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/share .
32 sudo aarch64-linux-gnu-strip lib/python*
33 popd
34 
35 version=2
36 pushd rootfs/usr
37 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/lib .
38 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/include .
39 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/bin .
40 sudo cp  -raf /home/pengdonglin/src/qemu/python_cross_compile/Python${version}/aarch64/share .
41 sudo aarch64-linux-gnu-strip lib/python*
42 popd
43 
44 #sqlite
45 sudo cp -raf /home/pengdonglin/src/qemu/python_cross_compile/SQlite/aarch64/bin/* rootfs/bin/
46 sudo cp -raf /home/pengdonglin/src/qemu/python_cross_compile/SQlite/aarch64/include/* rootfs/include/
47 sudo cp -raf /home/pengdonglin/src/qemu/python_cross_compile/SQlite/aarch64/lib/* rootfs/lib/
48 sudo strip rootfs/bin/sqlite3
49 
50 #readline
51 sudo cp -raf /home/pengdonglin/src/qemu/python_cross_compile/Readline/aarch64/include/* rootfs/include/
52 sudo cp -raf /home/pengdonglin/src/qemu/python_cross_compile/Readline/aarch64/lib/* rootfs/lib/
53 
54 sudo mkdir -p rootfs/dev/
55 sudo mknod rootfs/dev/tty1 c 4 1
56 sudo mknod rootfs/dev/tty2 c 4 2
57 sudo mknod rootfs/dev/tty3 c 4 3
58 sudo mknod rootfs/dev/tty4 c 4 4
59 sudo mknod rootfs/dev/console c 5 1
60 sudo mknod rootfs/dev/null c 1 3
61 
62 sudo rm rootfs/lib/*.a
63 sudo rm rootfs/lib/*.la
64 sudo aarch64-linux-gnu-strip rootfs/lib/*
65 
66 sudo mkdir -p rootfs/lib/modules/4.10.0+
67 
68 pushd rootfs/lib
69 sudo ln -sf ld-2.19-2014.07.so ld-linux-aarch64.so.1
70 popd
71 
72 sudo mkdir -p rootfs/tools
73 sudo cp ./other_tools/* rootfs/tools
74 
75 sudo dd if=/dev/zero of=ramdisk bs=1M count=300
76 sudo mkfs.ext4 -F ramdisk
77 
78 sudo mkdir -p tmpfs
79 sudo mount -t ext4 ramdisk ./tmpfs/  -o loop
80 sudo cp -raf rootfs/*  tmpfs/
81 sudo umount tmpfs
82 
83 sudo gzip --best -c ramdisk > ramdisk.gz
84 sudo mkimage -n "ramdisk" -A arm -O linux -T ramdisk -C gzip -d ramdisk.gz ramdisk.img

这里我把Python3和Python2都拷贝到板子上面了，同时别忘了拷贝readline和termcap的lib和include。如果提示空间不够的话，修改第75行的count的数值，这个要不能大于kernel里配置的值。

6、验证

经测试，在板子板子上面使用python3或者python2的时候，按键盘的方向键不会乱码。

完。

修改Modules/Setup