NginX运维与开发宝典（第七篇：NginX源码开发基础）
https://edu.51cto.com/course/18013.html
安装centos7
版本CentOS-7-x86_64-DVD-2009.iso，镜像下载地址
安装nginx依赖
yum -y install make zlib zlib-devel gcc-c++ libtool openssl openssl-devel pcre pcre-devel
clion测试hello world
下载clion,解压进入bin目录,root运行clion.sh
建立一个c++ 14项目demo1,报
CMake Error at CMakeLists.txt:2 (project):
No CMAKE_CXX_COMPILER could be found.
解决：
yum install -y build-essential
结果如果报：没有可用软件包 build-essential,运行如下命令
yum install make automake gcc gcc-c++ kernel-devel
运行程序成功输出hello world
nginx调试配置
cd /opt
mkdir code
cd code
wget http://nginx.org/download/nginx-1.16.1.tar.gz
tar -zxvf nginx-1.16.1.tar.gz
cd nginx-1.16.1/
mkdir logs
./configure --prefix=/opt/code/nginx-1.16.1
vim makefile2cmakelist.py
makefile2cmakelist.py内容如下
#!/usr/bin/python
import os
import sys
import re
total_line = 0
def get_line_by_kw(file, ptn, key_word):
r_cmd = os.popen(" ".join(["grep -n", key_word, file]))
ret_s = r_cmd.readline()
r_cmd.close()
line_ptn = re.compile(ptn)
line_s = line_ptn.search(ret_s).group()[:-1]
return line_s
def write_a_line(write_l, content_str, line_start, line_end, tofile, postfix):
global total_line
if (write_l <= total_line):
line = "sed -in \'%dc %s\' %s" %(write_l, content_str[line_start:line_end] + postfix, tofile)
else:
line = "sed -in \'%da %s\' %s" %(write_l - 1, content_str[line_start:line_end] + postfix, tofile)
os.system(line)
line = "sed -in \'%ds/^/ /\' %s" %(write_l, tofile)
os.system(line)
def insert_a_line(insert_l, content_str, tofile):
line = "sed -in \"%da %s\" %s" %(insert_l, content_str, tofile)
os.system(line)
def write_header_to_cmake(start_line, content_list, tofile, toline):
write_l = toline
read_l = start_line
write_a_line(write_l, content_list[read_l], len("XXXX_DEPS = "), -3, tofile, "")
while True:
if content_list[read_l][-2] == '\\':
read_l += 1
write_l += 1
write_a_line(write_l, content_list[read_l], 1, -3, tofile, "")
else:
write_a_line(write_l, content_list[read_l], 1, -1, tofile, "")
break
return write_l
def write_dotc_set_clfags(start_line, content_list, fromfile, tofile, toline, set_n, cflag_n):
write_l = toline
read_l = start_line
all_flags_l = list()
while content_list[read_l][-2] == '\\':
read_l += 1
if '.o' in content_list[read_l]:
if '.o' in content_list[read_l + 1]:
if content_list[read_l].startswith(" objs/src"):
write_a_line(write_l, content_list[read_l], len(" objs/"), -4, tofile, "c")
else:
if content_list[read_l].startswith(" objs/addon"):
addon_ln = int(get_line_by_kw(fromfile, r"^\d+:", content_list[read_l][1:-3] + ':'))
write_a_line(write_l, content_list[addon_ln], 1, -1, tofile, "")
else:
write_a_line(write_l, content_list[read_l], 1, -4, tofile, "c")
else:
if content_list[read_l].startswith(" objs/src") or content_list[read_l].startswith(" objs/addon"):
write_a_line(write_l, content_list[read_l], len(" objs/"), -4, tofile, "c)")
else:
if content_list[read_l].startswith(" objs/addon"):
addon_ln = int(get_line_by_kw(fromfile, r"^\d+:", content_list[read_l][1:-3] + ':'))
write_a_line(write_l, content_list[addon_ln], 1, -1, tofile, "")
else:
write_a_line(write_l, content_list[read_l], 1, -4, tofile, "c)")
write_l += 1
else:
if '-' in content_list[read_l]:
if content_list[read_l].startswith(' '):
all_flags_l.append(content_list[read_l][1:-1].replace('\\', ''))
else:
all_flags_l.append(content_list[read_l][:-1].replace('\\', ''))
all_flags_l.append(content_list[cflag_n][len("CFLAGS = "): -1])
print (" ".join(all_flags_l))
set_line = r"set\(CMAKE_C_FLAGS \"\$\{CMAKE_C_FLAGS\} -L /usr/lib64/ %s\"\)" %(" ".join(all_flags_l))
insert_a_line(set_n, set_line, tofile)
line = "sed -in \"/add_executable/{x;p;x}\" %s" %(tofile)
os.system(line)
return write_l + 2
def set_include_directories(makefile, cmakelist):
added_list = list()
r_cmd = os.popen(' '.join(["grep -n include_directories", cmakelist]))
inc_dir_l = r_cmd.readlines()
r_cmd.close()
line_ptn = re.compile(r"^\d+:")
start_line_ns = line_ptn.search(inc_dir_l[0]).group()[:-1]
start_line_n = int(start_line_ns)
r_cmd = os.popen(' '.join(["grep -n \"I \"", makefile]))
inc_path_l = r_cmd.readlines()
r_cmd.close()
inc_pth_ptn = re.compile(r"-I\s*\S+\b")
insert_a_line(start_line_n, r"include_directories\(/usr/local/include\)", cmakelist)
for item in inc_path_l:
flag = 0
pth_s = inc_pth_ptn.search(item).group()[3:].replace('\\', '')
for inc_dir_item in inc_dir_l:
if pth_s in inc_dir_item or pth_s in added_list:
flag = 1
break
if flag == 0:
added_list.append(pth_s)
set_line = r"include_directories\(%s\)" %pth_s
insert_a_line(start_line_n, set_line, cmakelist)
if __name__ == '__main__':
if len(sys.argv) != 3:
print "Error! Usage is ./makefile2cmakelist.py $(path)/Makefile $(path)/CMakeList"
sys.exit()
if False == os.path.isfile(sys.argv[1]) or False == os.path.isfile(sys.argv[2]):
print "Error! Parameter should be a file!"
sys.exit()
else:
if "Makefile" in sys.argv[1]:
fm = 1
if "CMakeList" in sys.argv[2]:
fc = 2
else:
print("Error! There is no file named \"CMakeList\" in paramters!")
sys.exit()
else:
if "Makefile" in sys.argv[2]:
fm = 2
if "CMakeList" in sys.argv[1]:
fc = 1
else:
print("Error! There is no file named \"CMakeList\" in paramters!")
sys.exit()
else:
print("Error! There is no file named \"Makefile\" in paramters!")
sys.exit()
if False == os.path.isfile(sys.argv[fc] + '.bak'):
line = "cp %s %s" %(sys.argv[fc], sys.argv[fc] + '.bak')
else:
line = "rm -rf %s; cp -rf %s %s" %(sys.argv[fc], sys.argv[fc] + '.bak', sys.argv[fc])
os.system(line)
line = "wc -l %s" %sys.argv[fc]
r_cmd = os.popen(line)
ret_s = r_cmd.readline()
print "wc resault:"+ret_s[0:3]
r_cmd.close()
t_line_ptn = re.compile("^\d+\s")
global total_line
total_line = int(t_line_ptn.search(ret_s).group()[:-1])
key_ns = get_line_by_kw(sys.argv[fm], r"^\d+:", "CORE_DEPS")
print ("CORE_DEPS " + key_ns)
core_deps_n = int(key_ns) - 1
key_ns = get_line_by_kw(sys.argv[fm], r"^\d+:", "HTTP_DEPS")
print ("HTTP_DEPS " + key_ns)
http_deps_n = int(key_ns) - 1
key_ns = get_line_by_kw(sys.argv[fm], r"^\d+:", "\(LINK\)")
print ("LINK " + key_ns)
dotc_n = int(key_ns) - 1
key_ns = get_line_by_kw(sys.argv[fm], r"^\d+:", "\"CFLAGS =\"")
print ("CFLAGS " + key_ns)
cflag_n = int(key_ns) - 1
key_ns = get_line_by_kw(sys.argv[fc], r"^\d+:", "add_executable")
print ("add_executable " + key_ns)
exe_n = int(key_ns) + 1
mf = open(sys.argv[fm], "r+")
df = mf.readlines()
print(df[core_deps_n])
print(df[http_deps_n])
print(df[dotc_n])
print(df[cflag_n])
mf.close()
old_exe_n = exe_n
set_n = exe_n - 2
exe_n = write_header_to_cmake(core_deps_n, df, sys.argv[fc], old_exe_n)
old_exe_n = exe_n + 1
exe_n = write_header_to_cmake(http_deps_n, df, sys.argv[fc], old_exe_n)
old_exe_n = exe_n + 1
exe_n = write_dotc_set_clfags(dotc_n, df, sys.argv[fm], sys.argv[fc], old_exe_n, set_n, cflag_n)
line = "sed -in \'%d,$d\' %s" %(exe_n, sys.argv[fc])
os.system(line)
set_include_directories(sys.argv[fm], sys.argv[fc])
clion导入源码
执行命令
python makefile2cmakelist.py CMakeLists.txt objs/Makefile
nginx.conf添加如下内容，使nginx单进程启动
daemon off;
master_process off;
启动项目，在ngx_http_core_module.c下ngx_http_handler方法中打断点
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