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39 lines
2.0 KiB
CMake
39 lines
2.0 KiB
CMake
# For boards without their own cmake file, we look for a header file
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# PICO_CMAKE_CONFIG: PICO_BOARD_HEADER_DIRS, List of directories to look for <PICO_BOARD>.h in. This may be specified the user environment, type=list, group=build
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if (DEFINED ENV{PICO_BOARD_HEADER_DIRS})
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set(PICO_BOARD_HEADER_DIRS $ENV{PICO_BOARD_HEADER_DIRS})
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message("Using PICO_BOARD_HEADER_DIRS from environment ('${PICO_BOARD_HEADER_DIRS}')")
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endif()
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set(PICO_BOARD_HEADER_DIRS ${PICO_BOARD_HEADER_DIRS} CACHE STRING "PICO board header directories" FORCE)
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list(APPEND PICO_BOARD_HEADER_DIRS ${CMAKE_CURRENT_LIST_DIR}/../src/boards/include/boards)
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pico_find_in_paths(PICO_BOARD_HEADER_FILE PICO_BOARD_HEADER_DIRS ${PICO_BOARD}.h)
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if (EXISTS ${PICO_BOARD_HEADER_FILE})
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message("Using board configuration from ${PICO_BOARD_HEADER_FILE}")
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list(APPEND PICO_CONFIG_HEADER_FILES ${PICO_BOARD_HEADER_FILE})
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# we parse the header file to configure the defaults
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file(STRINGS ${PICO_BOARD_HEADER_FILE} HEADER_FILE_CONTENTS)
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while(HEADER_FILE_CONTENTS)
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list(POP_FRONT HEADER_FILE_CONTENTS LINE)
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if (LINE MATCHES "^[ \t\]*//[ \t\]*pico_cmake_set[ \t\]*([a-zA-Z_][a-zA-Z0-9_]*)[ \t\]*=[ \t\]*(.*)")
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set("${CMAKE_MATCH_1}" "${CMAKE_MATCH_2}")
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endif()
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if (LINE MATCHES "^[ \t\]*//[ \t\]*pico_cmake_set_default[ \t\]*([a-zA-Z_][a-zA-Z0-9_]*)[ \t\]*=[ \t\]*(.*)")
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if (NOT DEFINED "${CMAKE_MATCH_1}")
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set("${CMAKE_MATCH_1}" "${CMAKE_MATCH_2}")
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endif()
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endif()
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endwhile()
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else()
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set(msg "Unable to find definition of board '${PICO_BOARD}' (specified by PICO_BOARD):\n")
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list(JOIN PICO_BOARD_HEADER_DIRS ", " DIRS)
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string(CONCAT msg ${msg} " Looked for ${PICO_BOARD}.h in ${DIRS} (additional paths specified by PICO_BOARD_HEADER_DIRS)\n")
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list(JOIN PICO_BOARD_CMAKE_DIRS ", " DIRS)
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string(CONCAT msg ${msg} " Looked for ${PICO_BOARD}.cmake in ${DIRS} (additional paths specified by PICO_BOARD_CMAKE_DIRS)")
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message(FATAL_ERROR ${msg})
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endif()
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