[Premake] Fix buildlog path

premake/libtommath.lua

@@ -36,9 +36,6 @@ function libtommath.project()
 			path.join(libtommath.settings.source, "*.c"),
 		}
 
-		-- dependencies
-		libtommath.import()
-
 		-- not our code, ignore POSIX usage warnings for now
 		warnings "Off"
 

premake5.lua

@@ -235,6 +235,7 @@ workspace "iw4x"
 	location "./build"
 	objdir "%{wks.location}/obj"
 	targetdir "%{wks.location}/bin/%{cfg.buildcfg}"
+	buildlog "%{wks.location}/obj/%{cfg.architecture}/%{cfg.buildcfg}/%{prj.name}/%{prj.name}.log"
 	configurations { "Debug", "Release" }
 	architecture "x32"
 	platforms "x86"
@@ -263,7 +264,6 @@ workspace "iw4x"
 	project "iw4x"
 		kind "SharedLib"
 		language "C++"
-		cppdialect "C++17"
 		files {
 			"./src/**.rc",
 			"./src/**.hpp",