如何在 CMake Release 模式下启用断言? [英] How to enable assert in CMake Release mode?

问题描述

CMake 被用来编译一些 C++ 文件.代码中有 assert 调用.这些调用在 CMake 的 Release 模式下被禁用.我猜它在发布模式下定义了 NDEBUG.

CMake is being used to compile some C++ files. There are assert calls in the code. These calls are disabled in Release mode of CMake. It defines NDEBUG in Release mode, I guess.

如果我有兴趣在 CMake 的 Release 模式下使用断言，我该如何启用它?

If I'm interested in having assert in Release mode of CMake, how do I enable it?

推荐答案

1

如果您只对自己代码中的 assert 功能感兴趣，那么简单的一种解决方案是提供自定义断言.例如:

1

If you interested in assert functionality only in your own code then the simple one solution is to provide custom assert. For instance:

#if (MY_DEBUG)
# define MY_ASSERT(A) ... checks here ...
#else
# define MY_ASSERT(A) ... ignore A ...
#endif

使用 option 启用/禁用断言:

Use option to enable/disable assert:

# CMakeLists.txt
option(ENABLE_MY_ASSERT "Turn on MY_ASSERT checks" OFF)
if(ENABLE_MY_ASSERT)
  add_definitions(-DMY_DEBUG=1)
else()
  add_definitions(-DMY_DEBUG=0)
endif()

在这种情况下，您可以完全控制您的支票，您可以验证一个组件并忽略其他组件:

In this case you have full control over your checks, you can verify one component and ignore others:

... FOO_DEBUG=0 BOO_DEBUG=1 BAR_DEBUG=0 ...

2

添加自定义CMAKE_BUILD_TYPE(另见CMAKE_CONFIGURATION_TYPES):

cmake_minimum_required(VERSION 2.8.12)
project(foo)

set(CMAKE_CXX_FLAGS_MYREL "-O3")

add_library(foo foo.cpp)

输出:

# Debug
# ... -g ...

# Release
# ... -O3 -DNDEBUG ...

# RelWithDebInfo
# ... -O2 -g -DNDEBUG ...

# MyRel
# ... -O3 ...

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