diff --git a/Makefile.local b/Makefile.local
index 34967cb3..6e526f30 100644
--- a/Makefile.local
+++ b/Makefile.local
@@ -4,18 +4,21 @@ ANDROID_NDK_VERSION=21.1.6352462
 UNAME := $(shell uname)
 
 ifeq ($(UNAME), Linux)
-    ANDROID_NDK=/opt/AndroidSDK/ndk/$(ANDROID_NDK_VERSION)
+    ANDROID_SDK_ROOT?=/opt/AndroidSDK
+    ANDROID_NDK=$(ANDROID_SDK_ROOT)/ndk/$(ANDROID_NDK_VERSION)
     ANDROID_CC=$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-$(ANDROID_SDK_VERSION)-clang
     ANDROID_CFLAGS=--target=aarch64-linux-$(ANDROID_SDK_VERSION)
     ANDROID_RANLIB=$(ANDROID_NDK)/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android-ranlib
 else
 ifeq ($(UNAME), Darwin)
-    ANDROID_NDK=~/Library/Android/sdk/ndk/$(ANDROID_NDK_VERSION)
+    ANDROID_SDK_ROOT?=$(HOME)/Library/Android/sdk
+    ANDROID_NDK=$(ANDROID_SDK_ROOT)/ndk/$(ANDROID_NDK_VERSION)
     ANDROID_CC=$(ANDROID_NDK)/toolchains/llvm/prebuilt/darwin-x86_64/bin/aarch64-linux-$(ANDROID_SDK_VERSION)-clang
     ANDROID_CFLAGS=--target=aarch64-linux-$(ANDROID_SDK_VERSION)
     ANDROID_RANLIB=$(ANDROID_NDK)/toolchains/llvm/prebuilt/darwin-x86_64/bin/aarch64-linux-android-ranlib
 else
-    ANDROID_NDK=C:/Users/simon/AppData/Local/Android/Sdk/ndk/$(ANDROID_NDK_VERSION)
+    ANDROID_SDK_ROOT?=$(USERPROFILE)/AppData/Local/Android/Sdk
+    ANDROID_NDK=$(ANDROID_SDK_ROOT)/ndk/$(ANDROID_NDK_VERSION)
     ANDROID_CC=$(ANDROID_NDK)/toolchains/llvm/prebuilt/windows-x86_64/bin/clang.exe
     ANDROID_CFLAGS=--target=aarch64-linux-$(ANDROID_SDK_VERSION)
     ANDROID_RANLIB=$(ANDROID_NDK)/toolchains/llvm/prebuilt/windows-x86_64/bin/aarch64-linux-android-ranlib.exe