Build/Core/project.lua

local buildHooks = require("Core/BuildHooks")
local targetingCmake = false 
local targetingWindows = os.host() == "windows"
local bugHack = targetingCmake or targetingWindows

local kPathPrefix = "!"

local addDest = function(name, projectType, dest)
    buildHooks.addDest(name, projectType, dest)
end

local function configureProjectForSolution(prj)
    filter(auFilterConfig(Aurora.Settings.sNameOfDebug))
        defines { "DEBUG" }
        targetdir(Aurora.Settings.sAbsCompilerWd .. "/Bin/" .. Aurora.Settings.sNameOfDebug)
        debugdir(Aurora.Settings.sAbsDebug)
        flags "NoIncrementalLink"

    filter(auFilterConfig({Aurora.Settings.sNameOfInternal, Aurora.Settings.sNameOfShip}))
        defines { "NDEBUG" }
        optimize "Speed"

    filter(auFilterConfig(Aurora.Settings.sNameOfInternal))
        defines { "STAGING" }
        targetdir(Aurora.Settings.sAbsCompilerWd .. "/Bin/" .. Aurora.Settings.sNameOfInternal)
        debugdir(Aurora.Settings.sAbsStage)
        flags "NoIncrementalLink"

    filter(auFilterConfig(Aurora.Settings.sNameOfShip))
        defines { "SHIP" }
        targetdir(Aurora.Settings.sAbsCompilerWd .. "/Bin/" .. Aurora.Settings.sNameOfShip)
        debugdir(Aurora.Settings.sAbsShip)
        flags "LinkTimeOptimization"
    filter {}

    auFilterForConfigPlatforms(function(config, platformName, arch)
        if (Aurora.Settings.bDefinePartialABIInTargetName) then
            targetname(string.format("%s.%s.%s.%s", prj.name, config, platformName:gsub("^%l", string.upper), arch))
        end

        if (not(config == Aurora.Settings.sNameOfShip)) then return end
        local platform = Aurora.Platforms[platformName]

        if (platform.requiresElfStrip and not platform.supportsElfStrip) then
            symbols "Off"
        end
    end)
end

local function setBestDebugDir(dest)
    if (not dest or dest:starts(kPathPrefix)) then
        local append = dest and dest:sub(#kPathPrefix + 1)
        if (not append) then append = "" end

        filter("configurations:" .. Aurora.Settings.sNameOfDebug)
            debugdir(Aurora.Settings.sAbsDebug .. "/" .. append)

        filter("configurations:" .. Aurora.Settings.sNameOfInternal)
            debugdir(Aurora.Settings.sAbsStage .. "/" .. append)

        filter("configurations:" .. Aurora.Settings.sNameOfShip)
            debugdir(Aurora.Settings.sAbsShip .. "/" .. append)

        filter {}
    else
        debugdir(auGetRoot() .. dest)
    end
end

local function configureProjectForCompiler()
    if (targetingCmake) then
        filter {"toolset:msc"}
    end 

    if (bugHack) then
		buildoptions {"-utf-8"}
    end
    
    if (targetingCmake) then
        filter {"toolset:msc", "files:**.cpp or files:**.cc or files:**.cxx"}
    elseif (bugHack) then
        filter {"files:**.cpp or files:**.cc or files:**.cxx"}
    end

    if (bugHack) then
        buildoptions {"/experimental:module-", "/Zc:__cplusplus"}
    end

    filter {}
end

local function configureProjectForPlatform(platform, projType)
    if (platform == "win32") then

        characterset(Aurora.Settings.sMsvcDefCharset)
        staticruntime("Off")

        if (Aurora.Settings.bHotswap) then
            justmycode("On")
        else
            justmycode("Off")
        end
        
        defines "_CRT_SECURE_NO_WARNINGS"
    else
        if ((projectType == "SharedLib") or
            (projectType == "StaticLib")) then
            pic "On"
        end
    end
end

local function configureProjectForPlatforms(projType)
    auFilterForPlatforms(function(platformName)
        configureProjectForPlatform(platformName, projType)
    end)
end

local function configureProjectErrors()
    if (not Aurora.Settings.bDisableWarningsThatAnnoyRec) then
        return
    end

    filter {"toolset:clang"}
        buildoptions {"-fms-extensions"}

        disablewarnings 
        {
            -- we live life on the edge
            "unused-result",
            
            -- warning: unused unused enumeration
            "unused-value",

            -- :(
            "unknown-warning-option"
        }

    filter{}

    if (targetingCmake) then
        filter {"toolset:msc"}
    end 
        
    if (bugHack) then
        disablewarnings
        {
            "4996", -- The whiny C99 is no longer supported nag
                    -- please needlessly use '_s' and '_'d functions __error__
                    

            "4251", -- MSVC's hurrdurr abis will break if you dynamically link classes
                    -- counter: sod off again. we have full control of the build process, and we only link against 
                    --          dynamic c/stl runtimes. which brainlet thought this was a good idea?
                    --          even microsofts own documentation dont state what is guaranteed to be safe.
                    --          dont mix optimizations, mitigation flags, and so on.
                    --          rtti works; the stl doesn't abuse inline/module specific globals; who cares?
        
            "4244" -- conversion from 'double' to 'float', possible loss of data
                    -- this warning is extremely important; however, we're developing a game engine and utilities
                    -- pragma warning push + disable + pop and/or static_casts to hint we expect floating point precision 
                    -- loss is extremely annoying and impractical. further, projects including harfbuzz, freetype,  
                    -- and v8 don't seem to care about this warning either
        }
    end
        
    filter {}
end

local function configureProjectForDebug(prj)
    local debugDir = nil
    
    if (type(prj.dest) == "string") then
        debugDir = prj.dest
    end
    
    if (type(prj.dest) == "table")  then
        debugDir = prj.dest[1]
    end
    
    setBestDebugDir(debugDir)
end

local function configureProjectForTarget()
    auRequire("Core/Target").startProject()
end

local function setupProject(prj) 
    print("project", prj.name)

    project(prj.name)
    language("C++") -- C and MASM drivers are still available to files requiring different compilers

    targetname(prj.name) -- TODO (reece): you know what to do
    kind(prj.projectType)

    cppdialect(Aurora.Settings.sCppVersion)
    targetprefix(Aurora.Settings.sLibPrefix)

    objdir(Aurora.Settings.sAbsCompilerWd .. "/" .. prj.name)

    configureProjectForSolution(prj)
    configureProjectErrors()
    configureProjectForCompiler()
    configureProjectForPlatforms(prj.projectType)
    configureProjectForTarget()
    configureProjectForDebug(prj)

    defines "_AU_HAS_ATOMIC_INTRINS"
    defines("_AU_BUILDING_" .. string.upper(prj.projectType))
    
    if (prj.root) then
        location(prj.root)
    else
        location(os.getcwd())
    end

    defines
    {
        "_ITERATOR_DEBUG_LEVEL=0",
    }

    if (Aurora.Settings.bIncludeAuIncludeIfExists) then
        local commonInclude = auGetRoot() .. "/Include"
        if (os.isdir(commonInclude)) then 
            includedirs(commonInclude)
            files(commonInclude .. "/**.h*")
        end
    end

    -- add includes, if available
    auForEach(prj.inc, function(path)
        print("", "include", _G.path.normalize(path))
        includedirs(path)
        
        files(path .. "/**.h")
        files(path .. "/**.hpp")
        files(path .. "/**.inl")
    end)

    -- add sources, if available
    auForEach(prj.src, function(path, root)
        print("", "source", _G.path.normalize(path))
        
        --if (string.sub(path, -2) == ".*") then
        if (string.find(path, "*")) then
            files {path}
            return
        end

        if (os.isfile(path)) then
            files {path}
            return
        end
        
        if (not root) then
            includedirs(path)
        end

        files
        {
            path .. "/**.*pp",
            path .. "/**.inl",
            path .. "/**.c",
            path .. "/**.cc",
            path .. "/**.cxx",
            path .. "/**.h",
            path .. "/**.masm" -- required explicitly
        }
    end, root)

    buildHooks.startProject(prj.name, prj.projectType)
    
    auForEach(prj.dest, function(v)
        addDest(prj.name, prj.projectType, v)
    end)

    print()
end

local function setupProjectCompat(name, projectType, src, inc, dest, root) 
    local project = 
    {
        name = name,
        projectType = projectType,
        src = src,
        inc = inc,
        dest = dest,
        root = root
    }

    setupProject(project)
end

return 
{
    setupProjectCompat = setupProjectCompat,
    startProject = setupProject
}