From 0bc1d1055748dd41a2db10a4c6cab32499c488f9 Mon Sep 17 00:00:00 2001
From: Matt Trentini <matt.trentini@gmail.com>
Date: Sun, 11 Sep 2022 11:40:59 +1000
Subject: [PATCH] rp2/Makefile: Add support for BOARD_VARIANTS.

Following stm32.  This allows a single board definition to define variants
of its configuration.
---
 ports/rp2/Makefile | 9 +++++++++
 py/mkrules.cmake   | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/ports/rp2/Makefile b/ports/rp2/Makefile
index c603f5403f..7057021bfc 100644
--- a/ports/rp2/Makefile
+++ b/ports/rp2/Makefile
@@ -22,6 +22,10 @@ ifeq ($(DEBUG),1)
 CMAKE_ARGS += -DCMAKE_BUILD_TYPE=Debug
 endif
 
+ifdef BOARD_VARIANT
+CMAKE_ARGS += -DBOARD_VARIANT=${BOARD_VARIANT}
+endif
+
 HELP_BUILD_ERROR ?= "See \033[1;31mhttps://github.com/micropython/micropython/wiki/Build-Troubleshooting\033[0m"
 
 all:
@@ -38,3 +42,8 @@ submodules:
 	GIT_SUBMODULES=$$(cmake -B $(BUILD)/submodules -DECHO_SUBMODULES=1 ${CMAKE_ARGS} -S . 2>&1 | \
 	                  grep '^GIT_SUBMODULES=' | cut -d= -f2); \
 	$(MAKE) -f ../../py/mkrules.mk GIT_SUBMODULES="$${GIT_SUBMODULES}" submodules
+
+query-variants:
+	@BOARD_VARIANTS=$$(cmake -B $(BUILD)/variants -DECHO_BOARD_VARIANTS=1 ${CMAKE_ARGS} -S . 2>&1 | \
+	                  grep '^BOARD_VARIANTS=' | cut -d= -f2); \
+	echo "VARIANTS: $${BOARD_VARIANTS}"
diff --git a/py/mkrules.cmake b/py/mkrules.cmake
index e7c4101ddb..b29986585a 100644
--- a/py/mkrules.cmake
+++ b/py/mkrules.cmake
@@ -223,3 +223,9 @@ if(ECHO_SUBMODULES)
     execute_process(COMMAND ${CMAKE_COMMAND} -E echo "GIT_SUBMODULES=${GIT_SUBMODULES}")
     message(FATAL_ERROR "Done")
 endif()
+
+# Display BOARD_VARIANTS
+if(ECHO_BOARD_VARIANTS)
+    execute_process(COMMAND ${CMAKE_COMMAND} -E echo "BOARD_VARIANTS=${BOARD_VARIANTS}")
+    message(FATAL_ERROR "Done")
+endif()