libpnglinux安装

‘壹’ linux系统如何让php使用GD库函数

linux下为php添加GD库的步骤如下：

一、下载

gd-2.0.33.tar.gz http://www.boutell.com/gd/
jpegsrc.v6b.tar.gz http://www.ijg.org/
libpng-1.2.7.tar.tar http://sourceforge.net/projects/libpng/
zlib-1.2.2.tar.gz http://sourceforge.net/projects/zlib/
freetype-2.1.9.tar.gz http://sourceforge.net/projects/freetype/
php-4.3.9.tar.gz http://www.php.net

二、安装

1.安装zlib

tar zxvf zlib-1.2.2.tar.gz
cd zlib-1.2.2
./configure
make
make install

2.安装libpng

tar zxvf libpng-1.2.7.tar.tar
cd libpng-1.2.7
cd scripts/
mv makefile.linux ../makefile
cd ..
make
make install
注意，这里的makefile不是用./configure生成，而是直接从scripts/里拷一个

3.安装freetype

tar zxvf freetype-2.1.9.tar.gz
cd freetype-2.1.9
./configure
make
make install

4.安装Jpeg

tar zxvf jpegsrc.v6b.tar.gz
cd jpeg-6b/
./configure --enable-shared
make
make test
make install
注意，这里configure一定要带--enable-shared参数，不然，不会生成共享库

5.安装GD

tar zxvf gd-2.0.33.tar.gz
cd gd-2.0.33
./configure --with-png --with-freetype --with-jpeg
make install

6.重新编译PHP

tar zxvf php-4.3.9.tar.gz
cd php-4.3.9
./configure (以前的参数) --with-gd --enable-gd-native-ttf --with-zlib --with-png --with-jpeg --with-freetype --enable-sockets
make
make install

<?php
phpinfo();
?>

Ok.....

‘贰’ 怎么安装opencv linux

OpenCV是一个基于开源发行的跨平台计算机视觉库，它轻量级而且高效——由一系列 C 函数和少量 C++ 类构成，同时提供了python、Ruby、MATLAB等语言的接口，实现了图像处理和计算机视觉方面的很多通用算法。在linux上安装opencv的方法如下：

工具：

Windows7、VMware Workstation 12 Pro、ubuntu-15.10、opencv-3.0.0.zip

步骤：

一、安装关联库

1、安装编译工具：sudo apt-get install build-essential

编译程序有了这个软件，它才知道头文件和库函数在哪，最后才形成一个开发环境。

‘叁’ 如何在linux下安装多个不同版本的PHP

Linux (测试环境 Ubuntu 12.04 Server X86_64)
1. 安装编译工具及所需类库
$ sudo apt-get install build-essential gcc g++ autoconf libjpeg62 libjpeg62-dev libpng12-0 libpng12-dev libfreetype6 libfreetype6-dev libxml2 libxml2-dev zlib1g zlib1g-dev bzip2 libbz2-dev openssl libssl-dev curl libcurl4-openssl-dev libpcre3 libpcre3-dev libevent-1.4-2 libevent-dev libmcrypt4 libmcrypt-dev mcrypt libltdl-dev libldap2-dev libsasl2-dev libmhash-dev libc-client2007e libc-client2007e-dev
2. 安装MySQL
$ sudo apt-get install mysql-server libmysqlclient-dev
3. 安装PHP
Linux下多版本PHP共存需要自己手工编译安装。
下载PHP源文件到/opt/src目录
$ mkdir /opt/src
$ cd /opt/src
$ wget http://museum.php.net/php5/php-5.2.17.tar.bz2 -O php-5.2.17.tar.bz2
$ wget http://cn2.php.net/get/php-5.3.28.tar.bz2/from/this/mirror -O php-5.3.28.tar.bz2
$ wget http://cn2.php.net/get/php-5.4.29.tar.bz2/from/this/mirror -O php-5.4.29.tar.bz2
$ wget http://cn2.php.net/get/php-5.5.14.tar.bz2/from/this/mirror -O php-5.5.14.tar.bz2
创建PHP各版本安装目录
$ mkdir -p /opt/php/{5217,5328,5429,5514}
安装PHP 5.2.17
$ cd /opt/src
$ tar -xvjf php-5.2.17.tar.bz2
$ cd php-5.2.17
$ sudo ln -s /usr/lib/x86_64-linux-gnu/libjpeg.so /usr/lib/libjpeg.so
$ sudo ln -s /usr/lib/x86_64-linux-gnu/libpng.so /usr/lib/libpng.so
$ sudo ln -s /usr/lib/x86_64-linux-gnu/libkrb5.so /usr/lib/libkrb5.so
$ wget -O debian_patches_disable_SSLv2_for_openssl_1_0_0.patch “https://bugs.php.net/patch-display.php?bug_id=54736&patch=debian_patches...”
$ patch -p1 < debian_patches_disable_SSLv2_for_openssl_1_0_0.patch
$ ./configure --prefix=/opt/php/5217 --with-config-file-scan-dir=/opt/php/5217/etc/php.d --with-mysql --with-pdo-mysql --with-mysqli --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --enable-discard-path --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-fastcgi --enable-force-cgi-redirect --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --enable-ftp --disable-debug --disable-ipv6 --disable-short-tags --enable-calendar --with-mime-magic --with-imap --with-imap-ssl --with-kerberos
$ make
$ sudo make install
$ cp php.ini-recommended /opt/php/5217/lib/php.ini
安装PHP 5.3.28
$ cd /opt/src
$ tar -xvjf php-5.3.28.tar.bz2
$ cd php-5.3.28
$ ./configure --prefix=/opt/php/5328 --with-config-file-scan-dir=/opt/php/5328/etc/php.d --with-mysql --with-pdo-mysql --with-mysqli --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --enable-ftp --disable-debug --disable-ipv6 --disable-short-tags --enable-calendar --with-imap --with-imap-ssl --with-kerberos
$ make
$ sudo make install
$ cp php.ini-development /opt/php/5328/lib/php.ini
安装PHP 5.4.29
$ cd /opt/src
$ tar -xvjf php-5.4.29.tar.bz2
$ cd php-5.4.29
$ ./configure --prefix=/opt/php/5429 --with-config-file-scan-dir=/opt/php/5429/etc/php.d --with-mysql --with-pdo-mysql --with-mysqli --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --enable-ftp --disable-debug --disable-ipv6 --disable-short-tags --enable-calendar --with-imap --with-imap-ssl --with-kerberos
$ make
$ sudo make install
$ cp php.ini-development /opt/php/5429/lib/php.ini
安装PHP 5.5.14
$ cd /opt/src
$ tar -xvjf php-5.5.14.tar.bz2
$ cd php-5.5.14
$ ./configure --prefix=/opt/php/5514 --with-config-file-scan-dir=/opt/php/5514/etc/php.d --with-mysql --with-pdo-mysql --with-mysqli --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --with-mcrypt --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --enable-ftp --disable-debug --disable-ipv6 --disable-short-tags --enable-calendar --with-imap --with-imap-ssl --with-kerberos
$ make
$ sudo make install
$ cp php.ini-development /opt/php/5514/lib/php.ini
4. 安装Apache
$ sudo apt-get install apache2
启用相应模块
$ a2enmod headers
$ a2enmod expires
$ a2enmod actions
$ a2enmod rewrite
5. 配置Apache
$ sudo vi /etc/apache2/httpd.conf
追加如下脚本映射和虚拟主机配置，原理同Windows的配置说明。
ServerName localhost
AddType application/x-httpd-php .php
ScriptAlias /php-5217/ "/opt/php/5217/bin/"
ScriptAlias /php-5328/ "/opt/php/5328/bin/"
ScriptAlias /php-5429/ "/opt/php/5429/bin/"
ScriptAlias /php-5514/ "/opt/php/5514/bin/"
<Directory /var/www/sites>
Options Indexes FollowSymLinks Includes ExecCGI
DirectoryIndex index.php index.html
AllowOverride All
Order allow,deny
Allow from all
</Directory>
<Directory /var/www/sites/5217>
Action application/x-httpd-php "/php-5217/php-cgi"
</Directory>
<Directory /var/www/sites/5328>
Action application/x-httpd-php "/php-5328/php-cgi"
</Directory>
<Directory /var/www/sites/5429>
Action application/x-httpd-php "/php-5429/php-cgi"
</Directory>
<Directory /var/www/sites/5514>
Action application/x-httpd-php "/php-5514/php-cgi"
</Directory>
# Virtualhosts
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot "/var/www/sites/5217/test.local"
ServerName php5217.local
ErrorLog "/var/log/apache2/php5217.local-error.log"
CustomLog "/var/log/apache2/php5217.local-access.log" common
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot "/var/www/sites/5328/test.local"
ServerName php5328.local
ErrorLog "/var/log/apache2/php5328.local-error.log"
CustomLog "/var/log/apache2/php5328.local-access.log" common
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot "/var/www/sites/5429/test.local"
ServerName php5429.local
ErrorLog "/var/log/apache2/php5429.local-error.log"
CustomLog "/var/log/apache2/php5429.local-access.log" common
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot "/var/www/sites/5514/test.local"
ServerName php5514.local
ErrorLog "/var/log/apache2/php5514.local-error.log"
CustomLog "/var/log/apache2/php5514.local-access.log" common
</VirtualHost>
保存配置后，创建各站点的DocumentRoot目录，再往每个目录放置一个phpinfo的测试文件，完成后重启Apache服务器并在本地hosts文件加入域名解析，现在就可以访问各站点来测试多版本PHP共存了。

好了，基本的多版本PHP共存解决方案已经完成，如果还需要添加其他的PHP类库支持，后续自己再调用对应php目录下的pecl, php_config等脚本编译安装就可以了。

‘肆’ linux终端下如何安装Matplotlib，求完整命令

具体安装步骤：

1，安装python，略，linux一般自带2.4版本

2，安装numpy:

① Numpy的高版本对python是进行兼容的，也就是直接下载最新版就可以了

② tar –xf numpy-1.6.2.tar.gz

③ cd numpy-1.6.2

④ python setup.py build

⑤ python setup.py install

说明：此步一般不会出问题，注意此处完成后，可以验证

不报错，说明安装正确

3，安装libpng

① 下载libpng-1.2.50.tar.gz

② tar –xf libpng-1.2.50.tar.gz

③ cd libpng-1.2.50

④ ./configure

⑤ Make install

4，安装matplotlib

① 下载matplotlib-1.1.1_notests.tar.gz，matplotlib同样是高版本对低版本的python进行兼容，所以直接下载最新版本

② tar –xf matplotlib-1.1.1_notests.tar.gz

③ cd matplotlib-1.1.1_notests

④ python setup.py build

⑤ python setup.py install

说明，此步我出现了问题，由于开发机器上存在libpng，并且有多个版本，所以我在安装时，跳过了libphg的安装，报错如下：

/usr/bin/ld: /usr/local/lib/libpng12.a(libpng12_la-png.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC

/usr/local/lib/libpng12.a: could not read symbols: Bad value

说明在加载libpng12.a符号时出错，

解决办法是：

mv /usr/local/lib/libpng12.a /usr/local/lib/libpng12.a_

或者删除libpng重装

完成以上步骤，如果成功，即可在目录下看到test.png的图片。