From 3c81186daf97cf7011fd2806dfd0bc3b875e92f3 Mon Sep 17 00:00:00 2001
From: "Luke T. Shumaker" <lukeshu@lukeshu.com>
Date: Thu, 31 Oct 2024 15:39:37 -0600
Subject: Clean up the build system

---
 CMakeLists.txt | 48 ++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6655b0a..100214c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,11 +6,11 @@
 cmake_minimum_required(VERSION 3.30)
 
 if (NOT PICO_PLATFORM)
-        message(FATAL_ERROR "PICO_PLATFORM must be specified")
+        message(FATAL_ERROR "PICO_PLATFORM must be specified; use the GNUmakefile to set this")
 endif()
 
 set(PICO_SDK_PATH "${CMAKE_SOURCE_DIR}/3rd-party/pico-sdk")
-include(pico_sdk_import.cmake)
+include("${PICO_SDK_PATH}/external/pico_sdk_import.cmake")
 
 project(sbc_harness)
 
@@ -18,6 +18,50 @@ pico_sdk_init()
 
 add_compile_options(-Wall -Wextra -Werror)
 
+function(target_embed_sources arg_target arg_hdrname)
+	set(embed_objs)
+	foreach(embed_src IN LISTS ARGN)
+		add_custom_command(
+			OUTPUT            "${embed_src}.obj"
+			WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+			COMMAND           mkdir -p -- "$<PATH:GET_PARENT_PATH,${CMAKE_CURRENT_BINARY_DIR}/${embed_src}>" &&
+				${CMAKE_LINKER} -r -b binary -o "${CMAKE_CURRENT_BINARY_DIR}/${embed_src}.obj" "${embed_src}"
+			DEPENDS           "${embed_src}"
+		)
+		list(APPEND embed_objs "${embed_src}.obj")
+	endforeach()
+	set_source_files_properties("${embed_objs}" PROPERTIES
+		EXTERNAL_OBJECT true
+		GENERATED true
+	)
+
+	set_source_files_properties("${arg_hdrname}" PROPERTIES
+		GENERATED true
+	)
+	add_custom_command(
+		OUTPUT  "${arg_hdrname}"
+		COMMAND "${CMAKE_SOURCE_DIR}/build-aux/embed-sources.h.gen" "${embed_objs}" >"${arg_hdrname}"
+		COMMAND_EXPAND_LISTS
+		DEPENDS "${embed_objs}" "${CMAKE_SOURCE_DIR}/build-aux/embed-sources.h.gen"
+	)
+
+	target_sources("${arg_target}" PRIVATE "${embed_objs}" "${arg_hdrname}")
+endfunction()
+
+function(add_stack_analysis arg_outfile arg_objlib_target)
+	target_compile_options("${arg_objlib_target}" PUBLIC "-fcallgraph-info=su,da")
+	set_source_files_properties("${arg_outfile}" PROPERTIES
+		GENERATED true
+	)
+	add_custom_command(
+		OUTPUT  "${arg_outfile}"
+		COMMAND "${CMAKE_SOURCE_DIR}/build-aux/stack.c.gen" "$<TARGET_OBJECTS:${arg_objlib_target}>" >"${arg_outfile}"
+		COMMAND_EXPAND_LISTS
+		DEPENDS "$<TARGET_OBJECTS:${arg_objlib_target}>" "${CMAKE_SOURCE_DIR}/build-aux/stack.c.gen"
+		COMMENT "Calculating ${arg_objlib_target} required stack sizes"
+	)
+endfunction()
+
 add_subdirectory(libcr)
 add_subdirectory(libcr_ipc)
 add_subdirectory(libmisc)
-- 
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