diff --git a/src/arduino.cc/builder/builder_utils/utils.go b/src/arduino.cc/builder/builder_utils/utils.go
index 17c04fca..e5938761 100644
--- a/src/arduino.cc/builder/builder_utils/utils.go
+++ b/src/arduino.cc/builder/builder_utils/utils.go
@@ -309,7 +309,10 @@ func PrepareCommandForRecipe(properties props.PropertiesMap, recipe string, remo
 	}
 
 	var err error
-	commandLine := properties.ExpandPropsInString(pattern)
+	// 1st pass with platform specifiers
+	commandLine := properties.ExpandPropsInStringWithSpecifier(pattern, properties[constants.BUILD_PROPERTIES_RUNTIME_HARDWARE])
+	// 2nd pass, raw
+	commandLine = properties.ExpandPropsInString(commandLine)
 	if removeUnsetProperties {
 		commandLine, err = props.DeleteUnexpandedPropsFromString(commandLine)
 		if err != nil {
diff --git a/src/arduino.cc/builder/constants/constants.go b/src/arduino.cc/builder/constants/constants.go
index bf5cfc35..bda30d4c 100644
--- a/src/arduino.cc/builder/constants/constants.go
+++ b/src/arduino.cc/builder/constants/constants.go
@@ -62,6 +62,7 @@ const BUILD_PROPERTIES_PATTERN = "pattern"
 const BUILD_PROPERTIES_PID = "pid"
 const BUILD_PROPERTIES_PREPROCESSED_FILE_PATH = "preprocessed_file_path"
 const BUILD_PROPERTIES_RUNTIME_HARDWARE_PATH = "runtime.hardware.path"
+const BUILD_PROPERTIES_RUNTIME_HARDWARE = "runtime.hardware"
 const BUILD_PROPERTIES_RUNTIME_OS = "runtime.os"
 const BUILD_PROPERTIES_RUNTIME_PLATFORM_PATH = "runtime.platform.path"
 const BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX = "runtime.tools."
@@ -74,6 +75,7 @@ const BUILD_PROPERTIES_TOOLS_KEY = "tools"
 const BUILD_PROPERTIES_VID = "vid"
 const CTAGS = "ctags"
 const EMPTY_STRING = ""
+const ARDUINO_STRING = "arduino"
 const FILE_BOARDS_LOCAL_TXT = "boards.local.txt"
 const FILE_BOARDS_TXT = "boards.txt"
 const FILE_BUILTIN_TOOLS_VERSIONS_TXT = "builtin_tools_versions.txt"
diff --git a/src/arduino.cc/builder/props/properties.go b/src/arduino.cc/builder/props/properties.go
index c75d747a..75e98c98 100644
--- a/src/arduino.cc/builder/props/properties.go
+++ b/src/arduino.cc/builder/props/properties.go
@@ -143,6 +143,30 @@ func (aMap PropertiesMap) SubTree(key string) PropertiesMap {
 	return aMap.FirstLevelOf()[key]
 }
 
+func (aMap PropertiesMap) ExpandPropsInStringWithSpecifier(str string, _package string) string {
+	replaced := true
+	for i := 0; i < 10 && replaced; i++ {
+		replaced = false
+		for key, _ := range aMap {
+			// runtime path keys MAY be expressed as subkey.vendor.arch.path
+			// try this before the standard substitution
+			if strings.Contains(key, constants.BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX) &&
+				strings.Contains(key, constants.BUILD_PROPERTIES_RUNTIME_TOOLS_SUFFIX) {
+
+				specifiedKey := strings.Replace(key, constants.BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX, "", -1)
+				specifiedKey = strings.Replace(specifiedKey, constants.BUILD_PROPERTIES_RUNTIME_TOOLS_SUFFIX, "", -1)
+				specifiedKey = constants.BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX +
+					specifiedKey + "." + _package + constants.BUILD_PROPERTIES_RUNTIME_TOOLS_SUFFIX
+
+				newStr := strings.Replace(str, "{"+key+"}", aMap[specifiedKey], -1)
+				replaced = replaced || str != newStr
+				str = newStr
+			}
+		}
+	}
+	return str
+}
+
 func (aMap PropertiesMap) ExpandPropsInString(str string) string {
 	replaced := true
 	for i := 0; i < 10 && replaced; i++ {
diff --git a/src/arduino.cc/builder/setup_build_properties.go b/src/arduino.cc/builder/setup_build_properties.go
index 9523a09d..19bf8e19 100644
--- a/src/arduino.cc/builder/setup_build_properties.go
+++ b/src/arduino.cc/builder/setup_build_properties.go
@@ -47,6 +47,7 @@ func (s *SetupBuildProperties) Run(ctx *types.Context) error {
 
 	targetPlatform := ctx.TargetPlatform
 	actualPlatform := ctx.ActualPlatform
+	targetPackage := ctx.TargetPackage
 	targetBoard := ctx.TargetBoard
 
 	buildProperties := make(props.PropertiesMap)
@@ -67,6 +68,7 @@ func (s *SetupBuildProperties) Run(ctx *types.Context) error {
 	buildProperties[constants.BUILD_PROPERTIES_BUILD_SYSTEM_PATH] = filepath.Join(actualPlatform.Folder, constants.FOLDER_SYSTEM)
 	buildProperties[constants.BUILD_PROPERTIES_RUNTIME_PLATFORM_PATH] = targetPlatform.Folder
 	buildProperties[constants.BUILD_PROPERTIES_RUNTIME_HARDWARE_PATH] = filepath.Join(targetPlatform.Folder, "..")
+	buildProperties[constants.BUILD_PROPERTIES_RUNTIME_HARDWARE] = targetPackage.PackageId
 	buildProperties[constants.BUILD_PROPERTIES_RUNTIME_IDE_VERSION] = ctx.ArduinoAPIVersion
 	buildProperties[constants.IDE_VERSION] = ctx.ArduinoAPIVersion
 	buildProperties[constants.BUILD_PROPERTIES_RUNTIME_OS] = utils.PrettyOSName()
@@ -90,6 +92,8 @@ func (s *SetupBuildProperties) Run(ctx *types.Context) error {
 	for _, tool := range tools {
 		buildProperties[constants.BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX+tool.Name+constants.BUILD_PROPERTIES_RUNTIME_TOOLS_SUFFIX] = tool.Folder
 		buildProperties[constants.BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX+tool.Name+"-"+tool.Version+constants.BUILD_PROPERTIES_RUNTIME_TOOLS_SUFFIX] = tool.Folder
+		buildProperties[constants.BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX+tool.Name+"."+tool.PlatformId+constants.BUILD_PROPERTIES_RUNTIME_TOOLS_SUFFIX] = tool.Folder
+		buildProperties[constants.BUILD_PROPERTIES_RUNTIME_TOOLS_PREFIX+tool.Name+"-"+tool.Version+"."+tool.PlatformId+constants.BUILD_PROPERTIES_RUNTIME_TOOLS_SUFFIX] = tool.Folder
 	}
 
 	if !utils.MapStringStringHas(buildProperties, constants.BUILD_PROPERTIES_SOFTWARE) {
diff --git a/src/arduino.cc/builder/tools_loader.go b/src/arduino.cc/builder/tools_loader.go
index 621a5391..a5d5a9cd 100644
--- a/src/arduino.cc/builder/tools_loader.go
+++ b/src/arduino.cc/builder/tools_loader.go
@@ -111,9 +111,9 @@ func collectAllToolsFolders(from string) ([]string, error) {
 	return folders, i18n.WrapError(err)
 }
 
-func toolsSliceContains(tools *[]*types.Tool, name, version string) bool {
+func toolsSliceContains(tools *[]*types.Tool, name, version string, platform string) bool {
 	for _, tool := range *tools {
-		if name == tool.Name && version == tool.Version {
+		if name == tool.Name && version == tool.Version && platform == tool.PlatformId {
 			return true
 		}
 	}
@@ -137,7 +137,7 @@ func loadToolsFrom(tools *[]*types.Tool, builtinToolsVersionsFilePath string) er
 			rowParts := strings.Split(row, "=")
 			toolName := strings.Split(rowParts[0], ".")[1]
 			toolVersion := rowParts[1]
-			if !toolsSliceContains(tools, toolName, toolVersion) {
+			if !toolsSliceContains(tools, toolName, toolVersion, constants.ARDUINO_STRING) {
 				*tools = append(*tools, &types.Tool{Name: toolName, Version: toolVersion, Folder: folder})
 			}
 		}
@@ -175,13 +175,14 @@ func loadToolsFromFolderStructure(tools *[]*types.Tool, folder string) error {
 		if err != nil {
 			return i18n.WrapError(err)
 		}
+		_, toolPlatform := filepath.Split(filepath.Join(folder, ".."))
 		for _, toolVersion := range toolVersions {
 			toolFolder, err := filepath.Abs(filepath.Join(folder, toolName.Name(), toolVersion.Name()))
 			if err != nil {
 				return i18n.WrapError(err)
 			}
-			if !toolsSliceContains(tools, toolName.Name(), toolVersion.Name()) {
-				*tools = append(*tools, &types.Tool{Name: toolName.Name(), Version: toolVersion.Name(), Folder: toolFolder})
+			if !toolsSliceContains(tools, toolName.Name(), toolVersion.Name(), toolPlatform) {
+				*tools = append(*tools, &types.Tool{Name: toolName.Name(), Version: toolVersion.Name(), Folder: toolFolder, PlatformId: toolPlatform})
 			}
 		}
 	}
diff --git a/src/arduino.cc/builder/types/types.go b/src/arduino.cc/builder/types/types.go
index e45bee91..9d85766a 100644
--- a/src/arduino.cc/builder/types/types.go
+++ b/src/arduino.cc/builder/types/types.go
@@ -88,9 +88,10 @@ type Board struct {
 }
 
 type Tool struct {
-	Name    string
-	Version string
-	Folder  string
+	Name       string
+	Version    string
+	Folder     string
+	PlatformId string
 }
 
 type LibraryLayout uint16