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Predefined Macros
The cxx plugin already defines some macros to be functional. For most build environments, these predefined macros are not sufficient. Please check your build environment and project settings to see which additional macros you need to define with sonar.cxx.defines.
Some links to common build environments and their Predefined Macros.
- The Microsoft C/C++ compiler (MSVC) predefines preprocessor macros
- The GNU Compiler Collection predefined macros
Predefined macros of the cxx plugin:
| Macro | Value | Comment |
|---|---|---|
__FILE__ |
"file" | always the same dummy value |
__LINE__ |
1 | always the same dummy value |
__DATE__ |
"??? ?? ????" | indicates 'date unknown' |
__TIME__ |
"??:??:??" | indicates 'time unknown' |
__STDC__ |
1 | 1 means that this compiler conforms to ISO Standard C |
__STDC_HOSTED__ |
1 | This macro is defined, with value 1, if the compiler’s target is a hosted environment. A hosted environment has the complete facilities of the standard C library available. |
__cplusplus |
201402L | language standard C++14 |
__has_builtin(x) |
0 | defines Feature Checking Macro |
__has_feature(x) |
0 | defines Feature Checking Macro |
__has_extension(x) |
0 | defines Feature Checking Macro |
__has_cpp_attribute(x) |
0 | defines Feature Checking Macro |
__has_c_attribute(x) |
0 | defines Feature Checking Macro |
__has_attribute(x) |
0 | defines Feature Checking Macro |
__has_declspec_attribute(x) |
0 | defines Feature Checking Macro |
__is_identifier(x) |
1 | defines Feature Checking Macro |
__has_warning(x) |
0 | defines Feature Checking Macro |
Hint: With sonar.cxx.defines and sonar.cxx.forceIncludes the predefined macro values can be redefined.
Automatically extract macros from the build system
The cxx plugin can also automatically extract macros from MSBuild .LOG files or JSON Compilation Databases. More information can be found at the respective parameter sonar.cxx.msbuild.reportPaths or sonar.cxx.jsonCompilationDatabase.