193 lines
6.8 KiB
CMake
193 lines
6.8 KiB
CMake
# - Precompilation of Vala/Genie source files into C sources
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# Makes use of the parallel build ability introduced in Vala 0.11.
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# Might be a bit oversimplified and inefficient but at least it's short.
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# Filenames must be unique within a single compilation unit and that's fine.
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#
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# vala_precompile (source... - .vala, .gs, .vapi
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# [DIRECTORY dir] - Output directory (binary dir by default)
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# [PACKAGES package...] - Package dependencies
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# [OPTIONS option...] - Extra valac options
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# [OUTPUTS outputs_var] - Output C sources
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# [HEADER id.h - Generate id.h and id_internal.h
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# [VAPI id.vapi] - Generate a vapi file
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# [SYMBOLS id.def]]) - Generate a list of public symbols
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#
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#=============================================================================
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# Copyright (c) 2011, 2016, Přemysl Janouch <p.janouch@gmail.com>
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# All rights reserved.
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#=============================================================================
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find_package (Vala 0.11 REQUIRED)
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include (CMakeParseArguments)
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macro (_vala_parse_source_path)
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get_filename_component (basename "${file}" NAME)
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get_filename_component (without_extension "${file}" NAME_WE)
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set (output_vapi "${directory}/${without_extension}.vapi")
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set (output_c "${directory}/${without_extension}.c")
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endmacro ()
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function (_vala_make_fast file)
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_vala_parse_source_path ()
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# See `cmake --help-policy CMP0058` for a rather nice explanation.
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# TODO: it says we can fix this situation even for non-Ninja
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# (rebuilds are forced even when the external API doesn't change),
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# just make sure to only use BYPRODUCTS when it's supported by CMake
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set (stamp "${output_vapi}")
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set (byproducts)
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if ("${CMAKE_GENERATOR}" STREQUAL Ninja)
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set (stamp "${output_vapi}.stamp")
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set (byproducts BYPRODUCTS "${output_vapi}")
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set (stamp_target ${stamp_target} "${stamp}" PARENT_SCOPE)
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endif ()
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add_custom_command (OUTPUT "${stamp}"
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${byproducts}
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COMMAND ${VALA_COMPILER} "${file}" "--fast-vapi=${output_vapi}"
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COMMAND ${CMAKE_COMMAND} -E touch "${stamp}"
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DEPENDS "${file}"
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COMMENT "Generating a fast vapi for ${basename}" VERBATIM)
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set (fast_vapi_deps ${fast_vapi_deps} "${output_vapi}" PARENT_SCOPE)
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set (fast_vapi_args ${fast_vapi_args}
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"--use-fast-vapi=${output_vapi}" PARENT_SCOPE)
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endfunction ()
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function (_vala_make_c file)
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_vala_parse_source_path ()
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# We need to filter the current file back out or else it creates conflicts
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set (fast_vapis ${fast_vapi_args})
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list (REMOVE_ITEM fast_vapis "--use-fast-vapi=${output_vapi}")
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add_custom_command (OUTPUT "${output_c}"
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COMMAND ${VALA_COMPILER} "${file}" -C ${compiler_args} ${fast_vapis}
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COMMAND ${CMAKE_COMMAND} -E touch "${output_c}"
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DEPENDS "${file}" ${fast_vapi_deps} ${vapis} ${stamp_target}
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WORKING_DIRECTORY "${directory}"
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COMMENT "Precompiling ${basename}" VERBATIM)
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set (c_outputs ${c_outputs} "${output_c}" PARENT_SCOPE)
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endfunction ()
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set (_vala_counter 0)
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function (vala_precompile)
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# So that the user doesn't need to name any targets, we can do it ourselves
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math (EXPR counter "${_vala_counter} + 1")
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set (_vala_counter "${counter}" PARENT_SCOPE)
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set (_single_value DIRECTORY OUTPUTS HEADER VAPI SYMBOLS)
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set (_multi_value PACKAGES OPTIONS)
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cmake_parse_arguments (arg "" "${_single_value}" "${_multi_value}" ${ARGN})
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set (directory ${CMAKE_CURRENT_BINARY_DIR})
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if (arg_DIRECTORY)
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set (directory ${arg_DIRECTORY})
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if (NOT IS_DIRECTORY ${directory})
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file (MAKE_DIRECTORY ${directory})
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endif (NOT IS_DIRECTORY ${directory})
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endif ()
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set (sources)
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set (vapis)
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foreach (_source ${arg_UNPARSED_ARGUMENTS})
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if (NOT IS_ABSOLUTE "${_source}")
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set (_source "${CMAKE_CURRENT_SOURCE_DIR}/${_source}")
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endif ()
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if (${_source} MATCHES "\\.vapi$")
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list (APPEND vapis "${_source}")
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else ()
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list (APPEND sources "${_source}")
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endif ()
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endforeach ()
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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set (fast_vapi_deps)
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set (fast_vapi_args)
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set (stamp_target)
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foreach (_source ${sources})
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_vala_make_fast ("${_source}")
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endforeach ()
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if (stamp_target)
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add_custom_target ("vala_fast_vapis_${counter}" DEPENDS ${stamp_target})
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set (stamp_target "vala_fast_vapis_${counter}")
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endif ()
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set (compiler_args)
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foreach (_pkg ${arg_PACKAGES})
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list (APPEND compiler_args "--pkg=${_pkg}")
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endforeach ()
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list (APPEND compiler_args ${arg_OPTIONS} ${vapis})
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set (c_outputs)
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foreach (_source ${sources})
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_vala_make_c ("${_source}")
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endforeach ()
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if (arg_OUTPUTS)
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set (${arg_OUTPUTS} ${c_outputs} PARENT_SCOPE)
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endif (arg_OUTPUTS)
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# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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set (extra_outputs)
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set (export_args)
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if (arg_VAPI)
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if (NOT IS_ABSOLUTE "${arg_VAPI}")
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set (arg_VAPI "${directory}/${arg_VAPI}")
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endif ()
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list (APPEND extra_outputs "${arg_VAPI}")
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list (APPEND export_args "--internal-vapi=${arg_VAPI}")
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if (NOT arg_HEADER)
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message (FATAL_ERROR "HEADER generation required for vapi")
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endif ()
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endif ()
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if (arg_SYMBOLS)
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if (NOT IS_ABSOLUTE "${arg_SYMBOLS}")
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set (arg_SYMBOLS "${directory}/${arg_SYMBOLS}")
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endif ()
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list (APPEND extra_outputs "${arg_SYMBOLS}")
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list (APPEND export_args "--symbols=${arg_SYMBOLS}")
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if (NOT arg_HEADER)
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message (FATAL_ERROR "HEADER generation required for symbols")
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endif ()
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endif ()
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if (arg_HEADER)
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if (NOT IS_ABSOLUTE "${arg_HEADER}")
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set (arg_HEADER "${directory}/${arg_HEADER}")
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endif ()
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get_filename_component (header_path "${arg_HEADER}" PATH)
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get_filename_component (header_name "${arg_HEADER}" NAME_WE)
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set (header_base "${header_path}/${header_name}")
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get_filename_component (header_ext "${arg_HEADER}" EXT)
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list (APPEND extra_outputs
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"${header_base}${header_ext}"
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"${header_base}_internal${header_ext}")
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list (APPEND export_args
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"--header=${header_base}${header_ext}"
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"--internal-header=${header_base}_internal${header_ext}")
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endif ()
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if (extra_outputs)
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add_custom_command (OUTPUT ${extra_outputs}
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COMMAND ${VALA_COMPILER}
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-C ${compiler_args} ${export_args} ${fast_vapi_args}
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DEPENDS ${fast_vapi_deps} ${vapis}
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COMMENT "Generating vapi/headers/symbols" VERBATIM)
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endif ()
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endfunction ()
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