Minor build refactor and preparation for gmake2.

build/Compile.sh

@@ -31,7 +31,7 @@ fi
 
 export PATH=$PATH:$MONO_PATH
 
-./premake.sh --file=$CUR_DIR/premake5.lua gmake "$@"
+$CUR_DIR/premake.sh --file=$CUR_DIR/premake5.lua gmake2 "$@"
 
 if $DEBUG; then
 	BUILD_CONF=debug_x64;

build/Helpers.lua

@@ -89,11 +89,16 @@ bindir = path.getabsolute("../bin");
 examplesdir = path.getabsolute("../examples");
 testsdir = path.getabsolute("../tests");
 
-builddir = path.getabsolute("./" .. _ACTION);
-if _ARGS[1] then
-    builddir = path.getabsolute("./" .. _ARGS[1]);
+local function get_build_dir()
+  if _ARGS[1] then
+    return  _ARGS[1]
+  end
+
+  return _ACTION == "gmake2" and "gmake" or _ACTION
 end
 
+builddir = path.getabsolute("./" .. get_build_dir());
+
 if _ACTION ~= "netcore" then
   objsdir = path.join(builddir, "obj", "%{cfg.buildcfg}_%{cfg.platform}");
   libdir = path.join(builddir, "lib", "%{cfg.buildcfg}_%{cfg.platform}");