cmake下编译release添加可调试的信息

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已于 2022-03-01 16:08:01 修改

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分类专栏： md文档文章标签： visual studio c++ ide

于 2022-02-28 16:15:58 首次发布

本文链接：https://blog.youkuaiyun.com/qq_36583051/article/details/123184530

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本文介绍了如何在Linux环境下设置core文件生成，并构建带调试信息的程序，以便于分析程序崩溃时的core dump文件。通过`ulimit -c unlimited`启用core文件生成，然后使用`gdb`进行调试，例如`gdb ./program core.xxx`。内容涵盖了CMake编译选项的调整，如`-g`和`-O2`，以及core文件的查看和分析。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
    add_definitions(-DAF_CLASSARRANGE_EXPORTS)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,-Bsymbolic")
    set(CMAKE_CXX_FLAGS_DEBUG "$ENV{CXXFLAGS} -O0 -Wall -g -ggdb")
    set(CMAKE_CXX_FLAGS_RELEASE "$ENV{CXXFLAGS} -g -O2 -Wall")
    add_compile_options(-Wall -Wextra -Wpedantic -fPIC -fvisibility=hidden)
    add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
else()
    add_definitions(-D_CRT_SECURE_NO_WARNINGS -DAF_CLASSARRANGE_EXPORTS)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /utf-8")
	set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /Zi")
    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /DEBUG:FULL /OPT:REF /OPT:ICF")
    set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS_RELEASE} /DEBUG:FULL /OPT:REF /OPT:ICF")
endif()

主要是这一句：

set(CMAKE_CXX_FLAGS_RELEASE "$ENV{CXXFLAGS} -g -O2 -Wall")

原来没有调试信息的

set(CMAKE_CXX_FLAGS_RELEASE "$ENV{CXXFLAGS} -O3 -Wall")

linux下查询dump文件（core文件）使用步奏

1：执行ulimit -c unlimited
2：首先构建带有调试信息的可执行程序
3：运行可执行程序，如果崩溃会在当前路径下产生core.XXX文件
4：可以用下面命令查看最新的core文件

ll
-rw------- 1 root root 1286144 Feb 28 12:51 core.1135
-rw------- 1 root root 1286144 Feb 28 13:41 core.17359
-rw------- 1 root root 1286144 Feb 28 12:53 core.2208
-rw------- 1 root root 1286144 Feb 28 11:27 core.25633
-rw------- 1 root root 1286144 Feb 28 11:32 core.27753
-rw------- 1 root root 962560 Feb 28 11:36 core.29026
-rw------- 1 root root 1286144 Feb 28 11:39 core.30271
-rw------- 1 root root 1286144 Feb 28 12:56 core.3488
-rw------- 1 root root 1286144 Feb 28 12:57 core.4169
-rw------- 1 root root 1286144 Feb 28 12:58 core.4770
-rw------- 1 root root 1286144 Feb 28 15:47 core.5168
-rw------- 1 root root 1286144 Feb 28 12:59 core.5213

5：gdb project core.xxx 调试奔溃信息可以指定到某一行

例：gdb ./commonomrtest core.5168
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-100.el7
Copyright © 2013 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-redhat-linux-gnu”.
For bug reporting instructions, please see:
http://www.gnu.org/software/gdb/bugs/…
Reading symbols from /commonomrtest…done.
[New LWP 5168]
[Thread debugging using libthread_db enabled]
Using host libthread_db library “/lib64/libthread_db.so.1”.
Core was generated by `./commonomrtest’.
Program terminated with signal 11, Segmentation fault.
#0 main () at /commonomrtest.cpp:53
53 *p=100;