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Variable scopes when generating project types

jsternberg | 10 Jan 2012

I'm currently trying to see how easy it is to get premake to generate ninja files. Right now, I'm having a bit of an issue as I need to know what kinds of projects are being built when I'm creating the "solution" file.

I have a function that's bound to onsolution that's the following:

function premake.ninja_solution(sln)
local project_types = {}
for _, prj in ipairs(sln.projects) do
project_types[prj.kind] = true
end
end

The problem is that prj.kind is nil, when it should be "ConsoleApp" (as I'm using the premake4.lua file in the repository).

Why can I not access the "kind" attribute inside of the solution creation?

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annulen | 11 Jan 2012 11:29

>Why can I not access the "kind" attribute inside of the solution creation?

Kind is per-configuration property, so it's better to retrieve it from configuration tables. Out of curiosity, why do you need it in onsolution, not onproject?

BTW, I'm planning to write a common abstraction layer for all make variants, including ninja, and use it to implement actions.

jsternberg | 11 Jan 2012 15:23

How do you access the configuration tables for each project when creating the solution?

The reason I want the "kind" property for every project inside of the solution is because I want to generate the top-level rules (such as cxx) only when necessary, and they can only be generated once. So I can't generate them in the projects (otherwise they may get generated multiple times) and I don't want to generate every rule that I could possibly need, so I need to know what kinds of projects are going to be built.

annulen | 11 Jan 2012 15:48

>How do you access the configuration tables for each project when creating the solution?

        local cc = premake.gettool(prj)
        local platforms = premake.filterplatforms(prj.solution, cc.platforms, "Native")
        for _, platform in ipairs(platforms) do
            for cfg in premake.eachconfig(prj, platform) do
            -- ...
annulen | 17 Feb 2012 14:21

jsternberg: Have you made any progress on Ninja? If so, are you planning to share your code?

jsternberg | 17 Feb 2012 15:40

No, I haven't made any progress. I haven't been working on it since I didn't decide to use premake for anything.

Sorry.