Build a REPL for ucLISP

Still some rough edges

platformio.ini

@@ -7,3 +7,55 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+
+[env]
+;; TODO: Make uclisp to a remote git repo
+lib_deps = ../uclisp/
+
+[common]
+build_flags =
+            -Wall
+            -Werror
+            -Wextra
+            ;;-Wpedantic
+            -D NO_READLINE
+release_build_flags =
+            -O2
+            -flto
+debug_build_flags =
+            -ggdb
+            -O0
+
+
+[env:pico-debug]
+platform = https://github.com/Wiz-IO/wizio-pico.git
+framework = baremetal
+board = raspberry-pi-pico
+build_flags =
+            ${common.build_flags}
+            ${common.debug_build_flags}
+            -D PLATFORM_PICO_SDK
+            -D LIB_PICO_STDIO_USB
+            -D PICO_USB
+
+upload_protocol = uf2
+upload_port = /run/media/max/RPI-RP2
+lib_deps = /home/max/repos/uclisp/
+
+[env:native-debug]
+platform = native
+build_flags =
+            ${common.build_flags}
+            ${common.debug_build_flags}
+            -D PLATFORM_NATIVE
+
+[env:native-release]
+platform = native
+build_flags =
+            ${common.build_flags}
+            ${common.release_build_flags}
+            -D PLATFORM_NATIVE
+
+
+;monitor_port = SELECT SERIAL PORT
+;monitor_speed = 115200