It compiles at least...

.gitignore

@@ -199,3 +199,4 @@ dmypy.json
 # End of https://www.gitignore.io/api/c,c++,cmake,python
 
 testcode/
+build/

mp-s7-src/CMakeLists.txt

@@ -0,0 +1,50 @@
+cmake_minimum_required(VERSION 3.0)
+project(MPTests VERSION 0.1 LANGUAGES C CXX)
+
+add_library(RetroConsole
+    retro/Console.cc
+    retro/Console.h
+    retro/ConsoleWindow.cc
+    retro/ConsoleWindow.h
+    retro/MacUtils.h
+    retro/InitConsole.cc
+    )
+set_target_properties(RetroConsole
+    PROPERTIES
+        COMPILE_OPTIONS -ffunction-sections)
+
+# different library name for Carbon
+# (Carbon shares the powerpc-apple-macos/ directory with Classic PPC)
+if(CMAKE_SYSTEM_NAME MATCHES RetroCarbon)
+    set_target_properties(RetroConsole PROPERTIES OUTPUT_NAME RetroConsoleCarbon)
+endif()
+target_include_directories(RetroConsole PUBLIC .)
+
+install(TARGETS RetroConsole  DESTINATION lib)
+
+
+#App parts
+
+file(GLOB micropython_py_SRC
+	"../micropython/py/*.h"
+	"../micropython/py/*.c"
+	../micropython/lib/utils/stdout_helpers.c
+	../micropython/ports/minimal/build/_frozen_mpy.c
+	mpconfigport.h
+	mphalport.h
+	stringio.c
+	main.c
+	)
+add_application(MPTests ${micropython_py_SRC})
+
+target_include_directories(MPTests
+        PUBLIC ../micropython/
+	../micropython/ports/minimal/build/
+        ./
+    )
+
+target_link_libraries(MPTests 
+	RetroConsole
+	#	MP
+	)
+

mp-s7-src/main.c

@@ -1,3 +1,4 @@
+//#include "retro/Console.h"
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -7,7 +8,7 @@
 #include "py/repl.h"
 #include "py/gc.h"
 #include "py/mperrno.h"
-#include "lib/utils/pyexec.h"
+#include "lib/utils/pyexec.h" 
 
 #if MICROPY_ENABLE_COMPILER
 void do_str(const char *src, mp_parse_input_kind_t input_kind) {
@@ -31,7 +32,15 @@ static char *stack_top;
 static char heap[2048];
 #endif
 
-int main(int argc, char **argv) {
+/*
+namespace retro
+{
+    void InitConsole();
+}
+*/
+
+int main()
+{
     int stack_dummy;
     stack_top = (char*)&stack_dummy;
 
@@ -39,25 +48,21 @@ int main(int argc, char **argv) {
     gc_init(heap, heap + sizeof(heap));
     #endif
     mp_init();
-    #if MICROPY_ENABLE_COMPILER
-    #if MICROPY_REPL_EVENT_DRIVEN
-    pyexec_event_repl_init();
-    for (;;) {
-        int c = mp_hal_stdin_rx_chr();
-        if (pyexec_event_repl_process_char(c)) {
-            break;
-        }
-    }
-    #else
-    pyexec_friendly_repl();
-    #endif
-    //do_str("print('hello world!', list(x+1 for x in range(10)), end='eol\\n')", MP_PARSE_SINGLE_INPUT);
-    //do_str("for i in range(10):\r\n  print(i)", MP_PARSE_FILE_INPUT);
-    #else
-    pyexec_frozen_module("frozentest.py");
-    #endif
-    mp_deinit();
+
+/*
+    retro::InitConsole();
+    std::string out = "Hello, world.\nEnter \"exit\" to quit.\n";
+    retro::Console::currentInstance->write(out.data(), out.size());
+
+    std::string in;
+    do
+    {
+        in = retro::Console::currentInstance->ReadLine();
+        out = "You Entered: " + in;
+        retro::Console::currentInstance->write(out.data(), out.size());
+    } while(in != "exit\n");
     return 0;
+*/
 }
 
 void gc_collect(void) {
@@ -97,4 +102,3 @@ void MP_WEAK __assert_func(const char *file, int line, const char *func, const c
     __fatal_error("Assertion failed");
 }
 #endif
-

mp-s7-src/mpconfigport.h

@@ -7,6 +7,8 @@
 // will still be able to execute pre-compiled scripts, compiled with mpy-cross.
 #define MICROPY_ENABLE_COMPILER     (1)
 
+#define MICROPY_ENABLE_EXTERNAL_IMPORT (0)	//removed for first compile. TODO remove this line to default to enabled
+
 #define MICROPY_QSTR_BYTES_IN_HASH  (1)
 #define MICROPY_QSTR_EXTRA_POOL     mp_qstr_frozen_const_pool
 #define MICROPY_ALLOC_PATH_MAX      (256)
@@ -74,6 +76,7 @@ typedef unsigned mp_uint_t; // must be pointer size
 typedef long mp_off_t;
 
 #define MP_PLAT_PRINT_STRN(str, len) mp_hal_stdout_tx_strn_cooked(str, len)
+//TODO: make the above call to a new function that will deal with macos linefeeds
 
 // extra built in names to add to the global namespace
 #define MICROPY_PORT_BUILTINS \