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56 lines
2.2 KiB
56 lines
2.2 KiB
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# This file implements basic support for sdcc (http://sdcc.sourceforge.net/)
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# a free C compiler for 8 and 16 bit microcontrollers.
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# To use it either a toolchain file is required or cmake has to be run like this:
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# cmake -DCMAKE_C_COMPILER=sdcc -DCMAKE_SYSTEM_NAME=Generic <dir...>
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# Since sdcc doesn't support C++, C++ support should be disabled in the
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# CMakeLists.txt using the project() command:
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# project(my_project C)
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set(CMAKE_STATIC_LIBRARY_PREFIX "")
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set(CMAKE_STATIC_LIBRARY_SUFFIX ".lib")
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set(CMAKE_SHARED_LIBRARY_PREFIX "") # lib
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set(CMAKE_SHARED_LIBRARY_SUFFIX ".lib") # .so
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set(CMAKE_IMPORT_LIBRARY_PREFIX )
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set(CMAKE_IMPORT_LIBRARY_SUFFIX )
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set(CMAKE_EXECUTABLE_SUFFIX ".ihx") # intel hex file
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set(CMAKE_LINK_LIBRARY_SUFFIX ".lib")
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set(CMAKE_DL_LIBS "")
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set(CMAKE_C_OUTPUT_EXTENSION ".rel")
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# find sdcclib as CMAKE_AR
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# since cmake may already have searched for "ar", sdcclib has to
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# be searched with a different variable name (SDCCLIB_EXECUTABLE)
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# and must then be forced into the cache
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get_filename_component(SDCC_LOCATION "${CMAKE_C_COMPILER}" PATH)
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find_program(SDCCLIB_EXECUTABLE sdcclib PATHS "${SDCC_LOCATION}" NO_DEFAULT_PATH)
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find_program(SDCCLIB_EXECUTABLE sdcclib)
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set(CMAKE_AR "${SDCCLIB_EXECUTABLE}" CACHE FILEPATH "The sdcc librarian" FORCE)
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# CMAKE_C_FLAGS_INIT and CMAKE_EXE_LINKER_FLAGS_INIT should be set in a CMAKE_SYSTEM_PROCESSOR file
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if(NOT DEFINED CMAKE_C_FLAGS_INIT)
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string(APPEND CMAKE_C_FLAGS_INIT " -mmcs51 --model-small")
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endif()
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if(NOT DEFINED CMAKE_EXE_LINKER_FLAGS_INIT)
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set (CMAKE_EXE_LINKER_FLAGS_INIT --model-small)
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endif()
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set(CMAKE_C_LINKER_WRAPPER_FLAG "-Wl" ",")
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# compile a C file into an object file
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set(CMAKE_C_COMPILE_OBJECT "<CMAKE_C_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -o <OBJECT> -c <SOURCE>")
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# link object files to an executable
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set(CMAKE_C_LINK_EXECUTABLE "<CMAKE_C_COMPILER> <FLAGS> <OBJECTS> -o <TARGET> <CMAKE_C_LINK_FLAGS> <LINK_FLAGS> <LINK_LIBRARIES>")
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# needs sdcc 2.7.0 + sddclib from cvs
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set(CMAKE_C_CREATE_STATIC_LIBRARY
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"\"${CMAKE_COMMAND}\" -E remove <TARGET>"
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"<CMAKE_AR> -a <TARGET> <LINK_FLAGS> <OBJECTS> ")
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# not supported by sdcc
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set(CMAKE_C_CREATE_SHARED_LIBRARY "")
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set(CMAKE_C_CREATE_MODULE_LIBRARY "")
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