如何在Qt Creator中为Clang静态分析器设置语言标准（-std） [英] How to set language standard (-std) for Clang static analyzer in Qt Creator

问题描述

我使用QtCreator作为IDE和CMake用C编写我的项目，以进行构建。 QtCreator版本> = 4.0.0包括我尝试使用的Clang静态分析器。

I write my project in C using QtCreator as IDE and CMake for build. QtCreator ver. >= 4.0.0 include Clang static analyzer, that I try to use.

在我的CMakeLists.txt中设置：

In my CMakeLists.txt set:

set（CMAKE_C_FLAGS -std = gnu99 $ {CMAKE_C_FLAGS}）

当我在控制台获取错误：

When I launch analysis in console get errors:

错误：无效的参数'-std = gnu ++ 11'不允许与'C / ObjC'

如何将'-std = gnu99'传递给c分析器？

How to pass '-std=gnu99' to clang analyzer? Maybe it's hardcoded in QtCreator plugin sources?

UDP1 ：似乎是QtCreator错误： https://bugreports.qt.io/browse/QTCREATORBUG-16290

UDP1: Seems like it's the QtCreator bug: https://bugreports.qt.io/browse/QTCREATORBUG-16290

推荐答案

@Petesh在回答中给出了经典方法。

The classic approach has been given in the answer by @Petesh.

如果只想指定确切的C标准版本，则编译器应遵守，使用全局变量 CMAKE_C_STANDARD 和 CMAKE_C_STANDARD_REQUIRED 。

If you just want to specify the exact C standard version the compiler should comply to, use the global variables CMAKE_C_STANDARD and CMAKE_C_STANDARD_REQUIRED.

在您的情况下，

set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED TRUE)

CMake然后将找出de的确切命令选项

CMake will then figure out the exact command options for the detected compiler on its own and add them to all invocations of the compiler.

要覆盖特定目标的全局设置，请修改相应的目标属性：

To overwrite this global setting for a specific target, modify the corresponding target properties:

set_target_properties(myTarget
                      PROPERTIES C_STANDARD 11
                                 C_STANDARD_REQUIRED ON)

---

在CMake官方文档中详细介绍了编译功能选项：目标编译功能。通过这些 compile功能，还可以要求检测到的编译器支持一组特定的语言功能，而与语言标准无关：

---

An in-depth description of the compile feature options is described in the official CMake documentation: target compile features. Via these compile features it's also possible to require that the detected compiler supports a specific set of language features independent of the language standard:

target_compile_features(myTarget
                        PUBLIC c_variadic_macros  # ISO/IEC 9899:1999
                        PRIVATE c_static_assert   # ISO/IEC 9899:2011
)

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