Multiple project conditional compilation Delphi

Question

I work in a Project Group composed by 3 projects with common units.

in project 1, i wrote in the project source :

program Project1;
{$DEFINE FIRSTPROJECT}
uses
  .....

in project 2, i wrote in the project source :

program Project2;
{$DEFINE SECONDPROJECT}
uses
  .....

Then in the differents units code i wrote :

...
{$IFDEF FIRSTPROJECT}
do this
{$ELSE}
do that
{$ENDIF}
...

The first project code is never compiled (it's just ignore). But if i put the {$DEFINE FIRSTPROJET} in same unit then it work... (in Delphi2009).

How can i spread my compilation directive threw all the file used ? Just depending on which project i want to compile...

David Heffernan David Heffernan · Accepted Answer · 2016-02-29T15:33:39

$DEFINE directives are local to the unit in which they are defined. If you place them in a project source file, a .dpr file, then they apply in that .dpr file only.

You need to add the conditional defines to each of your projects by using the Project Options dialog.

Multiple project conditional compilation Delphi

1 Answers