Add find_package compatible install

CMakeLists.txt

@@ -68,4 +68,31 @@ if (NOT TARGET _pico_sdk_inclusion_marker)
     if (NOT PICO_SDK_TOP_LEVEL_PROJECT)
         pico_promote_common_scope_vars()
     endif()
+
+    if (PICO_SDK_TOP_LEVEL_PROJECT)
+        # Create a ConfigVersion.cmake file
+        include(CMakePackageConfigHelpers)
+        write_basic_package_version_file(
+            ${CMAKE_BINARY_DIR}/pico-sdk-config-version.cmake
+            VERSION ${PICO_SDK_VERSION_STRING}
+            COMPATIBILITY SameMajorVersion
+            ARCH_INDEPENDENT
+        )
+
+        # Temporarily copy that file into source tree
+        install(CODE "file(COPY ${CMAKE_BINARY_DIR}/pico-sdk-config-version.cmake DESTINATION ${CMAKE_CURRENT_LIST_DIR}/cmake/)")
+
+        # Install entire pico-sdk directory
+        get_filename_component(binDir ${CMAKE_BINARY_DIR} NAME)
+        install(DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
+            TYPE LIB
+            PATTERN "${binDir}*" EXCLUDE
+            PATTERN "*.git*" EXCLUDE
+            PATTERN "*.github*" EXCLUDE
+            PATTERN "*.vscode*" EXCLUDE
+            PATTERN "test*" EXCLUDE)
+
+        # Delete temp file
+        install(CODE "file(REMOVE ${CMAKE_CURRENT_LIST_DIR}/cmake/pico-sdk-config-version.cmake)")
+    endif()
 endif()

cmake/pico-sdk-config.cmake

@@ -0,0 +1,6 @@
+
+if (DEFINED PICO_SDK_PATH)
+    pico_sdk_init()
+else()
+    message(FATAL_ERROR "Must use the toolchain file at ${CMAKE_CURRENT_LIST_DIR}/pico_toolchain_file.cmake, else pico-sdk project will not build")
+endif()

cmake/pico_toolchain_file.cmake

@@ -0,0 +1,17 @@
+set(CMAKE_SYSTEM_NAME PICO)
+
+if (NOT DEFINED PICO_PREVIOUS_CMAKE_TOOLCHAIN_FILE)
+    unset(CMAKE_TOOLCHAIN_FILE CACHE)
+else()
+    set(CMAKE_TOOLCHAIN_FILE ${PICO_PREVIOUS_CMAKE_TOOLCHAIN_FILE})
+endif()
+
+if (${PROJECT_NAME} MATCHES "CMAKE_TRY_COMPILE")
+    # Don't log toolchain searches when testing compiler
+    set(CMAKE_MESSAGE_LOG_LEVEL ERROR)
+endif()
+include(${CMAKE_CURRENT_LIST_DIR}/../pico_sdk_init.cmake)
+
+message("Toolchain file now ${CMAKE_TOOLCHAIN_FILE}")
+set(CMAKE_TOOLCHAIN_FILE "${CMAKE_TOOLCHAIN_FILE}" CACHE FILEPATH "")
+include(${CMAKE_TOOLCHAIN_FILE})