我如何使Clang的“扫描构建”与SCons合作？ [英] How can I make Clang's "scan-build" work with SCons?

问题描述

我有一个使用 SCons 构建的项目，我想使用 Clang Static Analyzer 来分析代码。但是，当运行

  scan-build scons 
   
 
 SCons似乎忽略了由 scan-build 引入的设置。  c> scan-build 
 $ 
 
工作是设置构建系统通常使用的各种环境变量（例如 make ）来控制构建的发生情况。其中有些是：
 
 
 
 
 
  CC   - 用作C编译器的程序名称
 
 
  CXX   - 用作C ++编译器的程序名称
 
 
  CCC _ *   - 控制Clang静态分析器行为的各种环境变量
 
 
 
 
 
 SCons通常会清除环境（运行构建之前）（这是一个功能）。为了使上述环境变量生效，在 SConstruct 中执行类似的操作：
  env = Environment（）
 env [CC] = os.getenv（CC）或env [CC] 
 env [CXX] = os.getenv （CXX）或env [CXX] 
 env [ENV]。update（x for x in os.environ.items（）if x [0] .startswith（CCC_））
  
 
I've got a project built with SCons and I'm trying to use the Clang Static Analyzer to analyze the code. However, when running
scan-build scons
SCons seems to ignore the settings introduced by scan-build. How can I make this work?
解决方案
The way scan-build works is it sets up various environment variables that are usually used by build systems (such as make) to control how the build happens. Some of these are:


CC - name of program to use as C compiler
CXX - name of program to use as C++ compiler
CCC_* - various environment variables that control the behaviour of Clang's static analyzer


SCons normally cleans out the environment before running a build (this is a feature). In order to make the above environment variables take effect, do something like this in SConstruct:
env = Environment()
env["CC"] = os.getenv("CC") or env["CC"]
env["CXX"] = os.getenv("CXX") or env["CXX"]
env["ENV"].update(x for x in os.environ.items() if x[0].startswith("CCC_"))


                        
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