7、编译通过，运行会报错：
09:26:00: Starting /root/Downloads/nginx/nginx-1.12.2/build-nginxQtProject_firecat-Desktop_Qt_5_9_7_GCC_64bit-Debug/nginx...
nginx: [alert] could not open error log file: open() "/usr/local/nginx/logs/error.log" failed (2: No such file or directory)
2018/11/04 09:26:00 [emerg] 13081#0: open() "/usr/local/nginx/conf/nginx.conf" failed (2: No such file or directory)
09:26:00: /root/Downloads/nginx/nginx-1.12.2/build-nginxQtProject_firecat-Desktop_Qt_5_9_7_GCC_64bit-Debug/nginx exited with code 1
解决办法：手动新建/usr/local/nginx/logs和conf路径，把配置文件拷贝过来。
另外，html文件夹（里面有两个文件）也记得拷贝到/usr/local/nginx/路径下。
8、我们终于可以执行断点调试，大功告成！
nginx启动之后，在浏览器输入http://localhost/，即可看到index.html网页。
9、附录：完整的Qt工程源码下载
https://download.csdn.net/download/libaineu2004/10763167
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参考文献：https://blog.csdn.net/zileqide/article/details/76736668
查看nginx是否启动成功
netstat -lnpt | grep nginx
或者ps -ef |grep nginx 查看nginx进程是否启动
或者netstat -nalp|grep 80 查看80端口的进程
终止nginx
kill -9 <nginx进程号>（一般有2~3个进程，通过netstat -lnpt | grep nginx命令可以查询进程号）
例如kill -9 36533
2、源码准备
使用黄建宏的带中文注释的版本，https://github.com/huangz1990/redis-3.0-annotated
我们解压源码，先使用gcc编译，主要目的是把deps库编译出来
[root@localhost redis_study]# chmod -R 777 redis-3.0-annotated-unstable
[root@localhost redis_study]# cd redis-3.0-annotated-unstable/
[root@localhost redis-3.0-annotated-unstable]# make
3、和nginx源码不同，redis的结构更复杂，因为nginx的编译结果是单一的执行文件，而redis会生成N多个执行文件：
redis-server
redis-cli
redis-benchmark
redis-check-aof
redis-check-dump
redis-sentinel
所以，我们新建的Qt Creator必须是多个子项目类型：
4、redisQtProject.pro，firecat这里只关注最主要的redis-server和redis-cli两个执行程序
TEMPLATE = subdirs
CONFIG += ordered
SUBDIRS += \
redis-server \
redis-cli
common.pri，因为前面已经把deps的库编译好了，这里只需要添加库依赖即可
isEmpty(PREFIX_SRC) { PREFIX_SRC = ../../src } isEmpty(PREFIX_DEPS) { PREFIX_DEPS = ../../deps } LIBS = -ldl -lpthread -lcrypt -lpcre -lz LIBS += "$$PREFIX_DEPS/hiredis/libhiredis.a" LIBS += "$$PREFIX_DEPS/lua/src/liblua.a" INCLUDEPATH += \ #$$PREFIX_SRC/ \ $$PREFIX_DEPS/hiredis \ #$$PREFIX_DEPS/hiredis/adapters \ $$PREFIX_DEPS/jemalloc/include/ \ $$PREFIX_DEPS/jemalloc/include/jemalloc/internal \ #$$PREFIX_DEPS/jemalloc/include/msvc_compat \ $$PREFIX_DEPS/linenoise \ $$PREFIX_DEPS/lua/src \ $$PREFIX_DEPS/lua/etc HEADERS += \ $$PREFIX_SRC/adlist.h \ $$PREFIX_SRC/ae.h \ $$PREFIX_SRC/anet.h \ $$PREFIX_SRC/asciilogo.h \ $$PREFIX_SRC/bio.h \ $$PREFIX_SRC/cluster.h \ $$PREFIX_SRC/config.h \ $$PREFIX_SRC/crc64.h \ $$PREFIX_SRC/dict.h \ $$PREFIX_SRC/endianconv.h \ $$PREFIX_SRC/fmacros.h \ $$PREFIX_SRC/help.h \ $$PREFIX_SRC/intset.h \ $$PREFIX_SRC/lzf.h \ $$PREFIX_SRC/lzfP.h \ $$PREFIX_SRC/pqsort.h \ $$PREFIX_SRC/rand.h \ $$PREFIX_SRC/rdb.h \ $$PREFIX_SRC/redis.h \ $$PREFIX_SRC/redisassert.h \ $$PREFIX_SRC/release.h \ $$PREFIX_SRC/rio.h \ $$PREFIX_SRC/sds.h \ $$PREFIX_SRC/sha1.h \ $$PREFIX_SRC/slowlog.h \ $$PREFIX_SRC/solarisfixes.h \ $$PREFIX_SRC/testhelp.h \ $$PREFIX_SRC/util.h \ $$PREFIX_SRC/version.h \ $$PREFIX_SRC/ziplist.h \ $$PREFIX_SRC/zipmap.h \ $$PREFIX_SRC/zmalloc.h \ $$PREFIX_DEPS/linenoise/linenoise.h
redis-server.pro
TARGET = redis-server include(../common.pri) SOURCES += \ $$PREFIX_SRC/adlist.c \ $$PREFIX_SRC/ae.c \ $$PREFIX_SRC/ae_epoll.c \ $$PREFIX_SRC/ae_evport.c \ $$PREFIX_SRC/ae_kqueue.c \ $$PREFIX_SRC/ae_select.c \ $$PREFIX_SRC/anet.c \ $$PREFIX_SRC/aof.c \ $$PREFIX_SRC/bio.c \ $$PREFIX_SRC/bitops.c \ $$PREFIX_SRC/blocked.c \ $$PREFIX_SRC/cluster.c \ $$PREFIX_SRC/config.c \ $$PREFIX_SRC/crc16.c \ $$PREFIX_SRC/crc64.c \ $$PREFIX_SRC/db.c \ $$PREFIX_SRC/debug.c \ $$PREFIX_SRC/dict.c \ $$PREFIX_SRC/endianconv.c \ $$PREFIX_SRC/hyperloglog.c \ $$PREFIX_SRC/intset.c \ $$PREFIX_SRC/lzf_c.c \ $$PREFIX_SRC/lzf_d.c \ $$PREFIX_SRC/memtest.c \ $$PREFIX_SRC/multi.c \ $$PREFIX_SRC/networking.c \ $$PREFIX_SRC/notify.c \ $$PREFIX_SRC/object.c \ $$PREFIX_SRC/pqsort.c \ $$PREFIX_SRC/pubsub.c \ $$PREFIX_SRC/rand.c \ $$PREFIX_SRC/rdb.c \ #$$PREFIX_SRC/redis-benchmark.c \ #$$PREFIX_SRC/redis-check-aof.c \ #$$PREFIX_SRC/redis-check-dump.c \ #$$PREFIX_SRC/redis-cli.c \ #$$PREFIX_SRC/redis.c \ $$PREFIX_SRC/release.c \ $$PREFIX_SRC/replication.c \ $$PREFIX_SRC/rio.c \ $$PREFIX_SRC/scripting.c \ $$PREFIX_SRC/sds.c \ $$PREFIX_SRC/sentinel.c \ $$PREFIX_SRC/setproctitle.c \ $$PREFIX_SRC/sha1.c \ $$PREFIX_SRC/slowlog.c \ $$PREFIX_SRC/sort.c \ $$PREFIX_SRC/syncio.c \ $$PREFIX_SRC/t_hash.c \ $$PREFIX_SRC/t_list.c \ $$PREFIX_SRC/t_set.c \ $$PREFIX_SRC/t_string.c \ $$PREFIX_SRC/t_zset.c \ $$PREFIX_SRC/util.c \ $$PREFIX_SRC/ziplist.c \ $$PREFIX_SRC/zipmap.c \ $$PREFIX_SRC/zmalloc.c \ $$PREFIX_DEPS/linenoise/linenoise.c SOURCES += \ $$PREFIX_SRC/redis.c
redis-cli.pro文件类似，这里不再赘述。
5、我们终于可以执行断点调试，大功告成！
6、附录：完整的Qt工程源码下载
https://download.csdn.net/download/libaineu2004/10763933