标签:change sudo php7.0 redis tar 项目 main函数 index 代码
本文主要介绍分析源码的方式,其中包含环境的搭建、分析工具的安装以及源码调试的基本操作。
$ wget http://php.net/distributions/php-7.0.12.tar.gz
$ tar zxvf php-7.0.12.tar.gz
$ cd php-7.0.12/
$ ./configure --prefix=/usr/local/php7 --enable-debug --enable-fpm
$ make && sudo make install
本文介绍两款调试工具,分别是GDB和CLion,前者为命令行调试工具,后者为图形界面调试工具,后者依赖前者。两者的安装都很简单,Clion到官网下载即可,GDB也只需一行命令就可搞定。
$ sudo apt install gdb
创建php文件
<?php
echo "Hello world!";
?>
打开gdb
$ gdb php #将显示如下内容
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from php...done.
(gdb)
调试创建的php文件
# 断点main函数
(gdb) b main
(gdb) run index.php
Starting program: /usr/local/bin/php index.php
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Breakpoint 1, main (argc=2, argv=0x7fffffffcd48) at /home/enoch/Source/php-7.0.12/sapi/cli/php_cli.c:1172
1172 int exit_status = SUCCESS;
# next执行下一行
(gdb) next
1173 int module_started = 0, sapi_started = 0;
(gdb) next
1174 char *php_optarg = NULL;
(gdb) next
1175 int php_optind = 1, use_extended_info = 0;
(gdb) next
1176 char *ini_path_override = NULL;
# print可以打印变量、表达式
(gdb) print php_optarg
$1 = 0x0
关于GDB的具体指令,可以参考官方文档,这里不再一一赘述。
CLion的安装就不再赘述了,下面我来讲述一下CLion是如何配置的。打开CLion,选中菜单栏中的File -> Import Project...
,选择下载的PHP源码包,如图所示,点击确定。
导入之后,打开项目根目录的CMakeLists.txt
文件,在最后一行加入以下代码:
add_custom_target(makefile COMMAND make && make install WORKING_DIRECTORY ${PROJECT_SOURCE_DIR})
完成后,打开菜单栏Run -> Edit Configurations...
,Target选择makefile、Executable选择PHP的可执行二进制程序、Program arguments填写要执行的脚本名称、Working Directory填写要执行脚本的存放目录,配置见下图。
点击完成,我们来验证一下配置是否成功。先在工作目录创建index.php文件,内容随意输入,只要是PHP代码即可。例如:
<?php
echo 'Hello world';
?>
回到CLion,打开sapi/cli/php_cli.c
文件,在main函数进行断点,如下图:
加入断点后,点击菜单Run -> Debug ‘makefile‘
,等待IDE编译完成后,若出现下图即大功告成。
在debug时可能会出现以下错误,主要是因为没有操作php目录权限的缘故,我们赋予/usr/local/php7
权限即可。
Installing build environment: /usr/local/php7/lib/php/build/
Installing shared extensions: /usr/local/php7/lib/php/extensions/debug-non-zts-20151012/
cp: /usr/local/php7/lib/php/build/#INST@82468#: Permission denied
make[4]: *** [install-build] Error 1
make[4]: *** Waiting for unfinished jobs....
cp: /usr/local/php7/lib/php/extensions/debug-non-zts-20151012/#INST@82475#: Permission denied
解决方式:
$ sudo chmod -R 777 /usr/local/php7/
no acceptable C compiler found
$ sudo apt-get install build-essential
configure: error: xml2-config not found
$ sudo apt-get install libxml2-dev
docker run --security-opt seccomp=unconfined -it ubuntu bash
标签:change sudo php7.0 redis tar 项目 main函数 index 代码
原文地址:https://www.cnblogs.com/enochzzg/p/9547595.html