Solution-wide #define

Question

Is there a way to globally declare a #define?

Like I want to have a file that has for instance,

#define MONO

and I want all source-

Answer 1

There is one more workaround, correct me if i'm wrong:

For example, ProjectA references ProjectB, and ProjectsCommon contains base static variable. Both projects refernece ProjectsCommon.

Code in ProjectsCommon:

[assembly: InternalsVisibleTo("ProjectA")]

------------------------------------------

public class ConditionVariables
{
    public static bool IsABC { get; internal set; } = false;
}

Code in ProjectA:

#if ABC
    ProjectsCommon.ConditionVariables.IsABC = true;
#endif

Code in ProjectB:

if (ProjectsCommon.ConditionVariables.IsABC )
{
    // first scenario
}
else
{
    // second one
}

However, code in ProjectA should run first. This is probably good when ProjectA is a bootstarapper project.