哪个gfortran编译器标志与警告“非法预处理器指令"相关联? [英] Which gfortran compiler flag is associated with the warning "Illegal preprocessor directive"?

问题描述

使用pFUnit(3.2.9)测试我的Fortran代码时，我收到许多非法预处理器指令"警告，例如

When using pFUnit (3.2.9) to test my Fortran code, I get many "Illegal preprocessor directive" warnings, e.g.

Warning: Illegal preprocessor directive
/path/to/my/file/test.f90:37:2:

 #line 26 "/path/to/my/file/test.f90"
  1

代码可以编译并正常运行，因此我想关闭这些警告，同时仍然看到其他编译器警告.哪个gfortran编译器标志会关闭此特定警告?我正在使用gfortran 7.3.1.

The code compiles and runs fine, so I would like to turn off these warnings, while still seeing other compiler warnings. Which gfortran compiler flag turns this specific warning off? I am working with gfortran 7.3.1.

推荐答案

这不是应该关闭警告，因为不使用预处理器通常会对使用最常见指令(例如和#if.据我所知，不可能将其关闭.

This is not the kind of warning that one should turn off because not using a preprocessor has usually very bad consequences on codes that use the most common directives like #define and #if. And as far as I know it isn't possible to turn it off.

使用-cpp标志启用预处理器更为明智.不仅警告会停止，而且在进一步的诊断中您还将获得正确的行号，这些行号将引用您的原始代码.

It is much wiser to enable the preprocessor using the -cpp flag. Not only the warnings will stop but you will get the correct line numbers in further diagnostics as well, the line numbers will refer to your original code.

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