I'm trying to set up a wxs script to handle two different conditions,
building a setup on a normal developer's machine and building a setup on a
TFS build agent. The problem is that the TFS build agent copies the products
of a solution to a binaries folder while a normal developer's build does
not. It occurred to me that the easiest way to handle the problem would be
to simply put an environmental variable on the TFS build agent's machine to
identify it as a TFS build agent and if this environmental variable was
found then to use a different path to find the source. That's the theory,
anyway. The practice has proven to be puzzling since nothing seems to work
the way that I'd expected.
My first attempt looked like this:
<?if $(env.IsTfsBuildAgent) = "yes" ?>
<?define SourcePath = ".\..\..\binaries" />
<?else ?>
<?define SourcePath = "..\bin\$(var.Configuration)" />
<?endif ?>
This seemed to work on the TFS build agent but failed on the development
machine because IsTfsBuildAgent is not present. OK, fine, let's try a simple
presence/absence.
<?ifdef $(env.IsTfsBuildAgent) ?>
<?define SourcePath = "..\..\..\binaries" />
<?else ?>
<?define SourcePath = "..\bin\$(var.Configuration)" />
<?endif ?>
I built the setup on my development machine and it worked. Great. Then, to
simulate building on the TFS build agent, I added an environmental variable
IsTfsBuildAgent, set its value to 'yes' and restarted VS with the
expectation that the build would fail with 'cannot find
..\..\..\binaries\whatever' but instead it compiled a setup program without
issue.
Clearly, there's something here that I'm not getting right. Can someone
please explain how to perform logical operations based upon the content of
environmental values?
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