diff --git a/src/spider/runtime/native/distro.hpp b/src/spider/runtime/native/distro.hpp
index 45dcbb0..3c490ed 100644
--- a/src/spider/runtime/native/distro.hpp
+++ b/src/spider/runtime/native/distro.hpp
@@ -1,3 +1,130 @@
 #pragma once
 
+// ========================================================== //
+//                Compiling or Writing?                       //
+// ========================================================== //
+
+#ifdef SPIDER_WRITING
+    #error "[Spider Distro] Please do not set this macro."
+#endif
+
+#ifndef SPIDER_COMPILING
+    #define SPIDER_WRITING
+#endif
+
+// ========================================================== //
+//                        Distro                              //
+// ========================================================== //
+
+#if !defined(SPIDER_DISTRO_DESKTOP) && !defined(SPIDER_DISTRO_MOBILE) && !defined(SPIDER_DISTRO_MICRO) && !defined(SPIDER_DISTRO_BROWSER)
+    // Autodetect distribution and OS
+    #if defined(__EMSCRIPTEN__) || defined(__wasm__)
+        #define SPIDER_DISTRO_BROWSER
+        #define SPIDER_OS_WASM
+    #elif defined(__ANDROID__)
+        #define SPIDER_DISTRO_MOBILE
+        #define SPIDER_OS_ANDROID
+    #elif defined(__APPLE__) && defined(__MACH__)
+        #include <TargetConditionals.h>
+        #if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
+            #define SPIDER_DISTRO_MOBILE
+            #define SPIDER_OS_IOS
+        #else
+            #define SPIDER_DISTRO_DESKTOP
+            #define SPIDER_OS_MACOS
+        #endif
+    #elif defined(_WIN32) || defined(_WIN64)
+        #define SPIDER_DISTRO_DESKTOP
+        #define SPIDER_OS_WINDOWS
+    #elif defined(__linux__) && !defined(__ANDROID__)
+        #define SPIDER_DISTRO_DESKTOP
+        #define SPIDER_OS_LINUX
+    #elif defined(__unix__) || defined(__unix)
+        #define SPIDER_DISTRO_DESKTOP
+        #define SPIDER_OS_LINUX
+    #else
+        // ========================================================== //
+        //              MUST be a microcontroller!                    //
+        // ========================================================== //
+        #include <spider/config_mcu.hpp>
+        #ifdef SPIDER_DISTRO_MICRO
+            #error "[Spider Distro] Could not autodetect. Please select a distro and OS manually."
+        #endif
+    #endif
+#endif
+
+// ========================================================== //
+//           Distro and OS specific configuration             //
+// ========================================================== //
+
+#if defined(SPIDER_DISTRO_DESKTOP)
+    
+    #define SPIDER_DISTRO_NAME "Desktop"
+
+    #if !defined(SPIDER_USE_ICU) && !defined(SPIDER_NO_ICU)
+        #define SPIDER_USE_ICU
+    #endif
+
+    #if defined(SPIDER_OS_WINDOWS)
+        #define SPIDER_OS_NAME "Windows"
+    #elif defined(SPIDER_OS_MACOS)
+        #define SPIDER_OS_NAME "Mac OS"
+    #elif defined(SPIDER_OS_LINUX)
+        #define SPIDER_OS_NAME "Linux"
+    #elif
+        #error "[Spider Distro] Unsupported OS"
+    #endif
+
+#elif defined(SPIDER_DISTRO_MOBILE)
+
+    #define SPIDER_DISTRO_NAME "Mobile"
+
+    #if !defined(SPIDER_USE_ICU) && !defined(SPIDER_NO_ICU)
+        #define SPIDER_no_ICU
+    #endif
+
+    #if defined(SPIDER_OS_ANDROID)
+        #define SPIDER_OS_NAME "Android"
+    #elif defined(SPIDER_OS_IOS)
+        #define SPIDER_OS_NAME "iOS"
+    #elif
+        #error "[Spider Distro] Unsupported OS"
+    #endif
+
+#elif defined(SPIDER_DISTRO_BROWSER)
+
+    #define SPIDER_DISTRO_NAME "Browser"
+
+    #if !defined(SPIDER_USE_ICU) && !defined(SPIDER_NO_ICU)
+        #define SPIDER_NO_ICU
+    #endif
+
+    #if defined(SPIDER_OS_WASM)
+        #define SPIDER_OS_NAME "WASM"
+    #elif
+        #error "[Spider Distro] Unsupported OS"
+    #endif
+
+#elif defined(SPIDER_DISTRO_MICRO)
+
+    #include <spider/runtime/native/distro_mcu.hpp>
+
+    #define SPIDER_DISTRO_NAME "Micro"
+
+    #if !defined(SPIDER_USE_ICU) && !defined(SPIDER_NO_ICU)
+        #define SPIDER_NO_ICU
+    #endif
+
+    #if define(SPIDER_OS_NONE)
+        #define SPIDER_OS_NAME "None"
+    #elif !defined(SPIDER_OS_MCU)
+        #error "[Spider Distro] Unsupported MCU OS"
+    #endif
+
+#else
+
+    #error "[Spider Distro] Unsupported Distro"
+
+#endif
+
 
diff --git a/src/spider/runtime/native/distro_mcu.hpp b/src/spider/runtime/native/distro_mcu.hpp
new file mode 100644
index 0000000..ffb3362
--- /dev/null
+++ b/src/spider/runtime/native/distro_mcu.hpp
@@ -0,0 +1,112 @@
+#pragma once
+
+// ========================================================== //
+//              SPIDER MICROCONTROLLER AUTODETECT             //
+// ========================================================== //
+
+// Automatically enable configurations for the microcontroller    //
+// so long as we can detect it or the user has already configured //
+// the corresponding macros.                                      //
+
+#define SPIDER_MCU_FAM_GENERIC  0
+#define SPIDER_MCU_FAM_AVR      1
+#define SPIDER_MCU_FAM_ARM_CM   2
+#define SPIDER_MCU_FAM_ARM_MBED 3
+#define SPIDER_MCU_FAM_PIC      4
+#define SPIDER_MCU_FAM_PIC32    5
+#define SPIDER_MCU_FAM_ESP8266  6
+#define SPIDER_MCU_FAM_ESP32    7
+#define SPIDER_MCU_FAM_RISCV    8
+#define SPIDER_MCU_FAM_RP2040   9
+
+#if defined(SPIDER_MCU_AVR) || defined(__avr__) || defined(__AVR__)
+// ========================================================== //
+//                AVR (Atmel / Microchip)                     //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_AVR
+    #define SPIDER_MCU_NAME "AVR"
+
+#elif defined(SPIDER_MCU_ARM) || defined(__arm__) || defined(__ARM_ARCH) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_6M__)
+// ========================================================== //
+//                  ARM Cortex-M (most STM32, nRF, etc.)      //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_ARM_CM
+    #define SPIDER_MCU_NAME "ARM Cortex-M"
+
+#elif defined(SPIDER_MCU_MBED) || defined(TARGET_LIKE_MBED)
+// ========================================================== //
+//                  Mbed OS special detection                 //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_ARM_MBED
+    #define SPIDER_MCU_NAME "ARM MBED"
+    #define SPIDER_OS_NAME "MBED OS"
+
+#elif defined(SPIDER_MCU_PIC8) || defined(__XC) && (defined(_PIC14) || defined(_PIC16))
+// ========================================================== //
+//                        PIC (8-bit)                         //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_PIC
+    #define SPIDER_MCU_NAME "PIC (8-bit)"
+
+#elif defined(SPIDER_MCU_PIC32) || defined(__XC32__)
+// ========================================================== //
+//                     PIC32 (MIPS)                           //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_PIC32
+    #define SPIDER_MCU_NAME "PIC (32-bit)"
+
+#elif defined(SPIDER_MCU_ESP8266) || defined(ESP8266)
+// ========================================================== //
+//                         ESP8266                            //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_ESP8266
+    #define SPIDER_MCU_NAME "ESP-8266"
+
+#elif defined(SPIDER_MCU_ESP32) || defined(ESP32)
+// ========================================================== //
+//                           ESP32                            //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_ESP32
+    #define SPIDER_MCU_NAME "ESP-32"
+
+#elif defined(SPIDER_MCU_PICO) || defined(PICO_PLATFORM) || defined(PICO_BOARD) || defined(RP2040) || defined(__RP2040__)
+// ========================================================== //
+//                   Raspberry Pi Pico (RP2040)               //
+// ========================================================== //
+    #define SPIDER_MCU_FAM_FAMILY SPIDER_MCU_FAM_RP2040
+    #define SPIDER_MCU_NAME "ESP-32"
+
+#elif defined(SPIDER_MCU_RISCV) || defined(__riscv) || defined(__riscv__)
+// ========================================================== //
+//                     RISC-V MCUs                            //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_RISCV
+    #define SPIDER_MCU_NAME "RISC-V MCU"
+
+#elif defined(SPIDER_MCU_GENERIC)
+// ========================================================== //
+//                      GENERIC MICRO                         //
+// ========================================================== //
+    #define SPIDER_MCU_FAMILY SPIDER_MCU_FAM_GENERIC
+    #define SPIDER_MCU_NAME "Generic MCU"
+#endif
+
+#ifdef SPIDER_MCU_FAMILY
+    
+    #ifndef SPIDER_DISTRO_MICRO
+        #define SPIDER_DISTRO_MICRO
+    #endif
+
+    // If SPIDER_OS_NAME was already defined, implies the SPIDER_MCU_FAM has an OS
+    #if defined(SPIDER_OS_NAME) && !defined(SPIDER_OS_MCU)
+        #define SPIDER_OS_MCU
+    #endif
+
+    // If no SPIDER_MCU_FAM OS defined, then it is NONE
+    #ifndef SPIDER_OS_MCU
+        #define SPIDER_OS_NONE
+    #endif
+
+#elif defined(SPIDER_DISTRO_MICRO)
+    #error "[Spider Distro] Unsupported SPIDER_MCU_FAM. Define SPIDER_MCU_GENERIC and see if works."
+#endif
diff --git a/src/spider/runtime/native/machine.hpp b/src/spider/runtime/native/machine.hpp
index 13ff024..2509368 100644
--- a/src/spider/runtime/native/machine.hpp
+++ b/src/spider/runtime/native/machine.hpp
@@ -5,7 +5,10 @@
  * things like alignment and type juggling
 */
 
-// === ENDIANESS === //
+// ========================================================== //
+//                           ENDIANNESS                       //
+// ========================================================== //
+
 // Used by GCC/Clang/WASM/ESP32/RP2040 and most compilers
 #if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__)
     #define SPIDER_LITTLE_ENDIAN (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
@@ -31,6 +34,8 @@
         #define SPIDER_LITTLE_ENDIAN 1
         #define SPIDER_BIG_ENDIAN    0
     // Likely will never use this clause
+    // ...but keeps compatibility with the one (1)
+    // guy who uses MSVC.
     #elif defined(_WIN32) || defined(_M_IX86) || defined(_M_X64)
         #define SPIDER_LITTLE_ENDIAN 1
         #define SPIDER_BIG_ENDIAN    0
@@ -47,31 +52,23 @@
     #warning "Mixed endian machine detected, unsupported! Be cautious adventurer!"
 #endif
 
-// === PACKING === //
-// TODO: move somewhere else
-#if defined(__clang__)
-    #define SPIDER_COMPILER_CLANG 1
-    #define SPIDER_COMPILER_GCC_LIKE 1
-#elif defined(__GNUC__)
-    #define SPIDER_COMPILER_GCC 1
-    #define SPIDER_COMPILER_GCC_LIKE 1
-#elif defined(_MSC_VER)
-    #define SPIDER_COMPILER_MSVC 1
-#else
-    #define SPIDER_COMPILER_UNKNOWN 1
-#endif
 
-// TODO: Ditto of whatever I already have
-#if defined(__EMSCRIPTEN__) || defined(__wasm__)
-    #define SPIDER_PLATFORM_WASM 1
-#elif defined(__AVR_ATmega328P__) || defined(__AVR__)
-    #define SPIDER_PLATFORM_AVR 1 // ATmega328
-#elif defined(ARDUINO_ARCH_RP2040) || defined(PICO_BOARD)
-    #define SPIDER_PLATFORM_RP2040 1
-#elif defined(ESP32) || defined(ARDUINO_ARCH_ESP32)
-    #define SPIDER_PLATFORM_ESP32 1
-#elif defined(STM32) || defined(ARDUINO_ARCH_STM32)
-    #define SPIDER_PLATFORM_STM32 1
+// ========================================================== //
+//                           PACKING                          //
+// ========================================================== //
+
+
+// Find out what compiler the user is using
+#if defined(__clang__)
+    #define SPIDER_COMPILER_CLANG
+    #define SPIDER_COMPILER_GCC_LIKE
+#elif defined(__GNUC__)
+    #define SPIDER_COMPILER_GCC
+    #define SPIDER_COMPILER_GCC_LIKE
+#elif defined(_MSC_VER)
+    #define SPIDER_COMPILER_MSVC
+#else
+    #define SPIDER_COMPILER_UNKNOWN
 #endif
 
 // Macros...