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path: root/scripts/toolchain.lua
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--
-- Copyright 2010-2021 Branimir Karadzic. All rights reserved.
-- License: https://github.com/bkaradzic/bx#license-bsd-2-clause
--

local naclToolchain = ""
local toolchainPrefix = ""

if _OPTIONS['TOOLCHAIN'] then
	toolchainPrefix = _OPTIONS["TOOLCHAIN"]
end

newoption {
	trigger = "gcc",
	value = "GCC",
	description = "Choose GCC flavor",
	allowed = {
		{ "android-arm",   "Android - ARM"          },
		{ "android-arm64", "Android - ARM64"        },
		{ "android-x86",   "Android - x86"          },
		{ "android-x64",   "Android - x64"          },
		{ "asmjs",         "Emscripten/asm.js"      },
		{ "freebsd",       "FreeBSD"                },
		{ "freebsd-clang", "FreeBSD (clang compiler)"},
		{ "linux-gcc",     "Linux (GCC compiler)"   },
		{ "linux-clang",   "Linux (Clang compiler)" },
		{ "mingw32-gcc",   "MinGW32"                },
		{ "mingw64-gcc",   "MinGW64"                },
		{ "mingw-clang",   "MinGW (clang compiler)" },
		{ "netbsd",        "NetBSD"                },
		{ "netbsd-clang",  "NetBSD (clang compiler)"},
		{ "openbsd",       "OpenBSD"                },
		{ "openbsd-clang", "OpenBSD (clang compiler)"},
		{ "osx",           "OSX (GCC compiler)"     },
		{ "osx-clang",     "OSX (Clang compiler)"   },
		{ "solaris",       "Solaris"                },
	},
}

newoption {
	trigger = "vs",
	value = "toolset",
	description = "Choose VS toolset",
	allowed = {
		{ "intel-15",      "Intel C++ Compiler XE 15.0" },
		{ "clangcl",       "Visual Studio 2019 using Clang/LLVM" },
	},
}

newoption {
	trigger = "with-android",
	value   = "#",
	description = "Set Android platform version (default: android-24).",
}

local android = {}

function androidToolchainRoot()
	if android.toolchainRoot == nil then
		local hostTags = {
			windows = "windows-x86_64",
			linux   = "linux-x86_64",
			macosx  = "darwin-x86_64"
		}
		android.toolchainRoot = (os.getenv("ANDROID_NDK_HOME") or "") .. "/toolchains/llvm/prebuilt/" .. hostTags[os.get()]
	end

	return android.toolchainRoot;
end

function toolchain(_buildDir, _subDir)

	location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION)

	local androidApiLevel = 24
	if _OPTIONS["with-android"] then
		androidApiLevel = _OPTIONS["with-android"]
	end

	if _ACTION == "gmake" or _ACTION == "ninja" then

		if nil == _OPTIONS["gcc"] or nil == _OPTIONS["gcc_version"] then
			print("GCC flavor and version must be specified!")
			os.exit(1)
		end

		if string.find(_OPTIONS["gcc"], "android") then
			-- 64-bit android platform requires >= 21
			if _OPTIONS["PLATFORM"]:find("64", -2) and (androidApiLevel < 21) then
				error("64-bit android requires platform 21 or higher")
			end
			if not os.getenv("ANDROID_NDK_HOME") then
				print("Set ANDROID_NDK_HOME environment variable.")
			end


			premake.gcc.cc   = androidToolchainRoot() .. "/bin/clang"
			premake.gcc.cxx  = androidToolchainRoot() .. "/bin/clang++"
			premake.gcc.ar   = androidToolchainRoot() .. "/bin/llvm-ar"

			premake.gcc.llvm = true

			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-android-" .. _OPTIONS["PLATFORM"])
		end

		if "asmjs" == _OPTIONS["gcc"] then

			if not os.getenv("EMSCRIPTEN") then
				print("Set EMSCRIPTEN enviroment variables.")
			end

			premake.gcc.cc   = "$(EMSCRIPTEN)/emcc"
			premake.gcc.cxx  = "$(EMSCRIPTEN)/em++"
			premake.gcc.ar   = "$(EMSCRIPTEN)/emar"
			premake.gcc.llvm = true
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-asmjs")
		end

		if "freebsd" == _OPTIONS["gcc"] then
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-freebsd")
		end

		if "freebsd-clang" == _OPTIONS["gcc"] then
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-freebsd-clang")
		end

		if "netbsd" == _OPTIONS["gcc"] then
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-netbsd")
		end

		if "netbsd-clang" == _OPTIONS["gcc"] then
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-netbsd-clang")
		end

		if "openbsd" == _OPTIONS["gcc"] then
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-openbsd")
		end

		if "openbsd-clang" == _OPTIONS["gcc"] then
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-openbsd-clang")
		end

		if "linux-gcc" == _OPTIONS["gcc"] then
			-- Force gcc-4.2 on ubuntu-intrepid
			if _OPTIONS["distro"]=="ubuntu-intrepid" then
				premake.gcc.cc   = "@gcc -V 4.2"
				premake.gcc.cxx  = "@g++-4.2"
			end
			premake.gcc.ar  = "ar"
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-linux")
		end

		if "solaris" == _OPTIONS["gcc"] then
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-solaris")
		end


		if "linux-clang" == _OPTIONS["gcc"] then
			premake.gcc.cc  = "clang"
			premake.gcc.cxx = "clang++"
			premake.gcc.ar  = "ar"
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-linux-clang")
		end

		if "mingw32-gcc" == _OPTIONS["gcc"] then
			if not os.getenv("MINGW32") then
				print("Set MINGW32 envrionment variable.")
			end
			if toolchainPrefix == nil or toolchainPrefix == "" then
				toolchainPrefix = "$(MINGW32)/bin/i686-w64-mingw32-"
			end
			premake.gcc.cc  = toolchainPrefix .. "gcc"
			premake.gcc.cxx = toolchainPrefix .. "g++"
			premake.gcc.ar  = toolchainPrefix .. "gcc-ar"
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-mingw32-gcc")
		end

		if "mingw64-gcc" == _OPTIONS["gcc"] then
			if not os.getenv("MINGW64") then
				print("Set MINGW64 envrionment variable.")
			end
			if toolchainPrefix == nil or toolchainPrefix == "" then
				toolchainPrefix = "$(MINGW64)/bin/x86_64-w64-mingw32-"
			end
			premake.gcc.cc  = toolchainPrefix .. "gcc"
			premake.gcc.cxx = toolchainPrefix .. "g++"
			premake.gcc.ar  = toolchainPrefix .. "gcc-ar"
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-mingw64-gcc")
		end

		if "mingw-clang" == _OPTIONS["gcc"] then
			premake.gcc.cc   = "clang"
			premake.gcc.cxx  = "clang++"
			premake.gcc.ar   = "llvm-ar"
			premake.gcc.llvm = true
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-mingw-clang")
		end

		if "osx" == _OPTIONS["gcc"] then
			if os.is("linux") then
				premake.gcc.cc  = toolchainPrefix .. "clang"
				premake.gcc.cxx = toolchainPrefix .. "clang++"
				premake.gcc.ar  = toolchainPrefix .. "ar"
			end
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-osx")
		end

		if "osx-clang" == _OPTIONS["gcc"] then
			premake.gcc.cc  = toolchainPrefix .. "clang"
			premake.gcc.cxx = toolchainPrefix .. "clang++"
			premake.gcc.ar  = toolchainPrefix .. "ar"
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-osx-clang")
		end
	elseif _ACTION == "vs2019" then

		if "clangcl" == _OPTIONS["vs"] then
			premake.vstudio.toolset = ("ClangCL")
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-clang")
		end

		if "intel-15" == _OPTIONS["vs"] then
			premake.vstudio.toolset = "Intel C++ Compiler XE 15.0"
			location (_buildDir .. "projects/" .. _subDir .. "/".. _ACTION .. "-intel")
		end
	end

	if (_OPTIONS["CC"] ~= nil) then
		premake.gcc.cc  = _OPTIONS["CC"]
	end
	if (_OPTIONS["CXX"] ~= nil) then
		premake.gcc.cxx  = _OPTIONS["CXX"]
	end
	if (_OPTIONS["LD"] ~= nil) then
		premake.gcc.ld  = _OPTIONS["LD"]
	end
	if (_OPTIONS["AR"] ~= nil) then
		premake.gcc.ar  = _OPTIONS["AR"]
	end

	configuration {} -- reset configuration


	configuration { "x32", "vs*" }
		objdir (_buildDir .. _ACTION .. "/obj")

	configuration { "x32", "vs*", "Release" }
		targetdir (_buildDir .. _ACTION .. "/bin/x32/Release")

	configuration { "x32", "vs*", "Debug" }
		targetdir (_buildDir .. _ACTION .. "/bin/x32/Debug")

	configuration { "x64", "vs*" }
		defines { "_WIN64" }
		objdir (_buildDir .. _ACTION .. "/obj")

	configuration { "x64", "vs*", "Release" }
		targetdir (_buildDir .. _ACTION .. "/bin/x64/Release")

	configuration { "x64", "vs*", "Debug" }
		targetdir (_buildDir .. _ACTION .. "/bin/x64/Debug")

	configuration { "x32", "vs*-clang" }
		objdir (_buildDir .. _ACTION .. "-clang/obj")

	configuration { "x32", "vs*-clang", "Release" }
		targetdir (_buildDir .. _ACTION .. "-clang/bin/x32/Release")

	configuration { "x32", "vs*-clang", "Debug" }
		targetdir (_buildDir .. _ACTION .. "-clang/bin/x32/Debug")

	configuration { "x64", "vs*-clang" }
		objdir (_buildDir .. _ACTION .. "-clang/obj")

	configuration { "x64", "vs*-clang", "Release" }
		targetdir (_buildDir .. _ACTION .. "-clang/bin/x64/Release")

	configuration { "x64", "vs*-clang", "Debug" }
		targetdir (_buildDir .. _ACTION .. "-clang/bin/x64/Debug")

	configuration { "vs*-clang" }
		buildoptions {
			"-Qunused-arguments",
		}

	configuration { "mingw*" }
		defines { "WIN32" }

	configuration { "x32", "mingw32-gcc" }
		objdir (_buildDir .. "mingw-gcc" .. "/obj")
		buildoptions { "-m32" }

	configuration { "x32", "mingw32-gcc", "Release" }
		targetdir (_buildDir .. "mingw-gcc" .. "/bin/x32/Release")

	configuration { "x32", "mingw32-gcc", "Debug" }
		targetdir (_buildDir .. "mingw-gcc" .. "/bin/x32/Debug")

	configuration { "x64", "mingw64-gcc" }
		objdir (_buildDir .. "mingw-gcc" .. "/obj")
		buildoptions { "-m64" }

	configuration { "x64", "mingw64-gcc", "Release" }
		targetdir (_buildDir .. "mingw-gcc" .. "/bin/x64/Release")

	configuration { "x64", "mingw64-gcc", "Debug" }
		targetdir (_buildDir .. "mingw-gcc" .. "/bin/x64/Debug")

	configuration { "mingw-clang" }
		buildoptions {
			"-femulated-tls",
		}
		linkoptions {
			"-Wl,--allow-multiple-definition",
		}

	configuration { "x32", "mingw-clang" }
		objdir ( _buildDir .. "mingw-clang/obj")
		buildoptions { "-m32" }

	configuration { "x32", "mingw-clang", "Release" }
		targetdir (_buildDir .. "mingw-clang/bin/x32/Release")

	configuration { "x32", "mingw-clang", "Debug" }
		targetdir (_buildDir .. "mingw-clang/bin/x32/Debug")

	configuration { "x64", "mingw-clang" }
		objdir (_buildDir .. "mingw-clang/obj")
		buildoptions { "-m64" }

	configuration { "x64", "mingw-clang", "Release" }
		targetdir (_buildDir .. "mingw-clang/bin/x64/Release")

	configuration { "x64", "mingw-clang", "Debug" }
		targetdir (_buildDir .. "mingw-clang/bin/x64/Debug")

	configuration { "linux-gcc", "x32" }
		objdir (_buildDir .. "linux_gcc" .. "/obj")
		buildoptions {
			"-m32",
		}

	configuration { "linux-gcc", "x32", "Release" }
		targetdir (_buildDir .. "linux_gcc" .. "/bin/x32/Release")

	configuration { "linux-gcc", "x32", "Debug" }
		targetdir (_buildDir .. "linux_gcc" .. "/bin/x32/Debug")

	configuration { "linux-gcc", "x64" }
		objdir (_buildDir .. "linux_gcc" .. "/obj")
		buildoptions {
			"-m64",
		}

	configuration { "linux-gcc", "x64", "Release" }
		targetdir (_buildDir .. "linux_gcc" .. "/bin/x64/Release")

	configuration { "linux-gcc", "x64", "Debug" }
		targetdir (_buildDir .. "linux_gcc" .. "/bin/x64/Debug")

	configuration { "linux-clang", "x32" }
		objdir (_buildDir .. "linux_clang" .. "/obj")
		buildoptions {
			"-m32",
		}

	configuration { "linux-clang", "x32", "Release" }
		targetdir (_buildDir .. "linux_clang" .. "/bin/x32/Release")

	configuration { "linux-clang", "x32", "Debug" }
		targetdir (_buildDir .. "linux_clang" .. "/bin/x32/Debug")

	configuration { "linux-clang", "x64" }
		objdir (_buildDir .. "linux_clang" .. "/obj")
		buildoptions {
			"-m64",
		}

	configuration { "linux-clang", "x64", "Release" }
		targetdir (_buildDir .. "linux_clang" .. "/bin/x64/Release")

	configuration { "linux-clang", "x64", "Debug" }
		targetdir (_buildDir .. "linux_clang" .. "/bin/x64/Debug")

	configuration { "solaris", "x32" }
		objdir (_buildDir .. "solaris" .. "/obj")
		buildoptions {
			"-m32",
		}

	configuration { "solaris", "x32", "Release" }
		targetdir (_buildDir .. "solaris" .. "/bin/x32/Release")

	configuration { "solaris", "x32", "Debug" }
		targetdir (_buildDir .. "solaris" .. "/bin/x32/Debug")

	configuration { "solaris", "x64" }
		objdir (_buildDir .. "solaris" .. "/obj")
		buildoptions {
			"-m64",
		}

	configuration { "solaris", "x64", "Release" }
		targetdir (_buildDir .. "solaris" .. "/bin/x64/Release")

	configuration { "solaris", "x64", "Debug" }
		targetdir (_buildDir .. "solaris" .. "/bin/x64/Debug")

	configuration { "freebsd", "x32" }
		objdir (_buildDir .. "freebsd" .. "/obj")
		buildoptions {
			"-m32",
		}

	configuration { "freebsd", "x32", "Release" }
		targetdir (_buildDir .. "freebsd" .. "/bin/x32/Release")

	configuration { "freebsd", "x32", "Debug" }
		targetdir (_buildDir .. "freebsd" .. "/bin/x32/Debug")

	configuration { "freebsd", "x64" }
		objdir (_buildDir .. "freebsd" .. "/obj")
		buildoptions {
			"-m64",
		}
	configuration { "freebsd", "x64", "Release" }
		targetdir (_buildDir .. "freebsd" .. "/bin/x64/Release")

	configuration { "freebsd", "x64", "Debug" }
		targetdir (_buildDir .. "freebsd" .. "/bin/x64/Debug")

	configuration { "netbsd", "x32" }
		objdir (_buildDir .. "netbsd" .. "/obj")
		buildoptions {
			"-m32",
		}
	configuration { "netbsd", "x32", "Release" }
		targetdir (_buildDir .. "netbsd" .. "/bin/x32/Release")

	configuration { "netbsd", "x32", "Debug" }
		targetdir (_buildDir .. "netbsd" .. "/bin/x32/Debug")

	configuration { "netbsd", "x64" }
		objdir (_buildDir .. "netbsd" .. "/obj")
		buildoptions {
			"-m64",
		}
	configuration { "netbsd", "x64", "Release" }
		targetdir (_buildDir .. "netbsd" .. "/bin/x64/Release")

	configuration { "netbsd", "x64", "Debug" }
		targetdir (_buildDir .. "netbsd" .. "/bin/x64/Debug")

	configuration { "openbsd", "x32" }
		objdir (_buildDir .. "openbsd" .. "/obj")
		buildoptions {
			"-m32",
		}
	configuration { "openbsd", "x32", "Release" }
		targetdir (_buildDir .. "openbsd" .. "/bin/x32/Release")

	configuration { "openbsd", "x32", "Debug" }
		targetdir (_buildDir .. "openbsd" .. "/bin/x32/Debug")

	configuration { "openbsd", "x64" }
		objdir (_buildDir .. "openbsd" .. "/obj")
		buildoptions {
			"-m64",
		}
	configuration { "openbsd", "x64", "Release" }
		targetdir (_buildDir .. "openbsd" .. "/bin/x64/Release")

	configuration { "openbsd", "x64", "Debug" }
		targetdir (_buildDir .. "openbsd" .. "/bin/x64/Debug")

	configuration { "android-*", "Release" }
		targetdir (_buildDir .. "android/bin/" .. _OPTIONS["PLATFORM"] .. "/Release")

	configuration { "android-*", "Debug" }
		targetdir (_buildDir .. "android/bin/" .. _OPTIONS["PLATFORM"] .. "/Debug")

	configuration { "android-*" }
		objdir (_buildDir .. "android/obj/" .. _OPTIONS["PLATFORM"])
		flags {
			"NoImportLib",
		}
		links {
			"c",
			"dl",
			"m",
			"android",
			"log",
		}
		buildoptions_c {
			"--gcc-toolchain=" .. androidToolchainRoot(),
			"--sysroot=" .. androidToolchainRoot() .. "/sysroot",
		}
		buildoptions {
			"--gcc-toolchain=" .. androidToolchainRoot(),
			"--sysroot=" .. androidToolchainRoot() .. "/sysroot",
			"-fpic",
			"-ffunction-sections",
			"-funwind-tables",
			"-fstack-protector-strong",
			"-no-canonical-prefixes",
		}
		linkoptions {
			"--gcc-toolchain=" .. androidToolchainRoot(),
			"--sysroot=" .. androidToolchainRoot() .. "/sysroot",
			"-Wl,--no-undefined",
			"-Wl,-z,noexecstack",
			"-Wl,-z,relro",
			"-Wl,-z,now",
		}

	configuration { "android-arm" }
			buildoptions {
				"--target=armv7-none-linux-android" .. androidApiLevel,
				"-march=armv7-a",
				"-mfloat-abi=softfp",
				"-mfpu=neon",
				"-mthumb",
			}
			linkoptions {
				"--target=armv7-none-linux-android" .. androidApiLevel,
				"-march=armv7-a",
			}

	configuration { "android-arm64" }
			buildoptions {
				"--target=aarch64-none-linux-android" .. androidApiLevel,
			}
			linkoptions {
				"--target=aarch64-none-linux-android" .. androidApiLevel,
			}

	configuration { "android-x86" }
		buildoptions {
			"--target=i686-none-linux-android" .. androidApiLevel,
			"-mtune=atom",
			"-mstackrealign",
			"-msse3",
			"-mfpmath=sse",
		}
		linkoptions {
			"--target=i686-none-linux-android" .. androidApiLevel,
		}

	configuration { "android-x64" }
		buildoptions {
			"--target=x86_64-none-linux-android" .. androidApiLevel,
		}
		linkoptions {
			"--target=x86_64-none-linux-android" .. androidApiLevel,
		}

	configuration { "asmjs" }
		targetdir (_buildDir .. "asmjs" .. "/bin")
		objdir (_buildDir .. "asmjs" .. "/obj")
		buildoptions {
			"-Wno-cast-align",
			"-Wno-tautological-compare",
			"-Wno-self-assign-field",
			"-Wno-format-security",
			"-Wno-inline-new-delete",
			"-Wno-constant-logical-operand",
			"-Wno-absolute-value",
			"-Wno-unknown-warning-option",
			"-Wno-extern-c-compat",
		}

	configuration { "osx*", "x32", "not arm64" }
		objdir (_buildDir .. "osx_clang" .. "/obj")
		buildoptions {
			"-m32",
		}
	configuration { "osx*", "x32", "not arm64", "Release" }
		targetdir (_buildDir .. "osx_clang" .. "/bin/x32/Release")

	configuration { "osx*", "x32", "not arm64", "Debug" }
		targetdir (_buildDir .. "osx_clang" .. "/bin/x32/Debug")

	configuration { "osx*", "x64", "not arm64" }
		objdir (_buildDir .. "osx_clang" .. "/obj")
		buildoptions {
			"-m64", "-DHAVE_IMMINTRIN_H=1",
		}

	configuration { "osx*", "x64", "not arm64", "Release" }
		targetdir (_buildDir .. "osx_clang" .. "/bin/x64/Release")

	configuration { "osx*", "x64", "not arm64", "Debug" }
		targetdir (_buildDir .. "osx_clang" .. "/bin/x64/Debug")

	configuration { "osx*", "arm64" }
		objdir (_buildDir .. "osx_clang" .. "/obj")
		buildoptions {
			"-m64", "-DHAVE_IMMINTRIN_H=0", "-DSDL_DISABLE_IMMINTRIN_H=1", "-DHAVE_SSE=0"
		}

	configuration { "osx*", "arm64", "Release" }
		targetdir (_buildDir .. "osx_clang" .. "/bin/x64/Release")

	configuration { "osx*", "arm64", "Debug" }
		targetdir (_buildDir .. "osx_clang" .. "/bin/x64/Debug")

	configuration {} -- reset configuration

	return true
end

function strip()
	if _OPTIONS["STRIP_SYMBOLS"]~="1" then
		return true
	end

	configuration { "osx-*" }
		postbuildcommands {
			"$(SILENT) echo Stripping symbols.",
			"$(SILENT) " .. (_OPTIONS['TOOLCHAIN'] and toolchainPrefix) .. "strip \"$(TARGET)\"",
		}

	configuration { "android-*" }
		postbuildcommands {
			"$(SILENT) echo Stripping symbols.",
			"$(SILENT) " .. toolchainPrefix .. "strip -s \"$(TARGET)\""
		}

	configuration { "linux-*" }
		postbuildcommands {
			"$(SILENT) echo Stripping symbols.",
			"$(SILENT) strip -s \"$(TARGET)\""
		}

	configuration { "mingw*", "x64" }
		postbuildcommands {
			"$(SILENT) echo Stripping symbols.",
			"$(SILENT) " .. (_OPTIONS['TOOLCHAIN'] or "$(MINGW64)/bin/") .. "strip -s \"$(TARGET)\"",
		}
	configuration { "mingw*", "x32" }
		postbuildcommands {
			"$(SILENT) echo Stripping symbols.",
			"$(SILENT) " .. (_OPTIONS['TOOLCHAIN'] or "$(MINGW32)/bin/") .. "strip -s \"$(TARGET)\"",
		}

	configuration { "asmjs" }
		postbuildcommands {
			"$(SILENT) echo Running asmjs finalize.",
			"$(SILENT) $(EMSCRIPTEN)/emcc -O2 -s TOTAL_MEMORY=268435456 \"$(TARGET)\" -o \"$(TARGET)\".html"
			-- ALLOW_MEMORY_GROWTH
		}

	configuration {} -- reset configuration
end