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add cpp example
This commit is contained in:
brano543
parent
abd0de3269
commit
67af18c332
32
examples/cpp/CMakeLists.txt
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32
examples/cpp/CMakeLists.txt
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cmake_minimum_required(VERSION 3.6)
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set (CMAKE_CXX_STANDARD 17)
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# ---[ Project name
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project(hello-world)
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# ---[ Output directory
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
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# ---[ Using cmake scripts and modules
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list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/Modules)
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# ---[ Includes
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include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/src/include)
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include_directories(${EXTERNAL_INCLUDE_DIRECTORIES})
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if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Release)
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endif()
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# ---[ Compiler flags
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set(CMAKE_CXX_FLAGS_DEBUG "-g -pthread")
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set(CMAKE_CXX_FLAGS_RELEASE "-O3 -pthread")
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add_compile_options(-Wall -Wextra -pedantic -Werror)
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# ---[ Handle dependencies
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include(cmake/Dependencies.cmake)
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# ---[ Subdirectories
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add_subdirectory(src)
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3
examples/cpp/cmake/Dependencies.cmake
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3
examples/cpp/cmake/Dependencies.cmake
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# ---[ LibOsmium
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find_package(Osmium REQUIRED COMPONENTS pbf)
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include_directories(SYSTEM ${OSMIUM_INCLUDE_DIRS})
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317
examples/cpp/cmake/Modules/FindOsmium.cmake
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317
examples/cpp/cmake/Modules/FindOsmium.cmake
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#----------------------------------------------------------------------
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#
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# FindOsmium.cmake
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#
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# Find the Libosmium headers and, optionally, several components needed for
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# different Libosmium functions.
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#
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#----------------------------------------------------------------------
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#
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# Usage:
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#
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# Copy this file somewhere into your project directory, where cmake can
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# find it. Usually this will be a directory called "cmake" which you can
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# add to the CMake module search path with the following line in your
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# CMakeLists.txt:
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#
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# list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
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#
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# Then add the following in your CMakeLists.txt:
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#
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# find_package(Osmium REQUIRED COMPONENTS <XXX>)
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# include_directories(SYSTEM ${OSMIUM_INCLUDE_DIRS})
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#
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# For the <XXX> substitute a space separated list of one or more of the
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# following components:
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#
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# pbf - include libraries needed for PBF input and output
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# xml - include libraries needed for XML input and output
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# io - include libraries needed for any type of input/output
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# geos - include if you want to use any of the GEOS functions
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# gdal - include if you want to use any of the OGR functions
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# proj - include if you want to use any of the Proj.4 functions
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# sparsehash - include if you use the sparsehash index
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#
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# You can check for success with something like this:
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#
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# if(NOT OSMIUM_FOUND)
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# message(WARNING "Libosmium not found!\n")
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# endif()
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#
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#----------------------------------------------------------------------
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#
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# Variables:
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#
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# OSMIUM_FOUND - True if Osmium found.
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# OSMIUM_INCLUDE_DIRS - Where to find include files.
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# OSMIUM_XML_LIBRARIES - Libraries needed for XML I/O.
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# OSMIUM_PBF_LIBRARIES - Libraries needed for PBF I/O.
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# OSMIUM_IO_LIBRARIES - Libraries needed for XML or PBF I/O.
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# OSMIUM_LIBRARIES - All libraries Osmium uses somewhere.
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#
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#----------------------------------------------------------------------
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# Look for the header file.
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find_path(OSMIUM_INCLUDE_DIR osmium/osm.hpp
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PATH_SUFFIXES include
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PATHS
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../libosmium
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~/Library/Frameworks
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/Library/Frameworks
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/opt/local # DarwinPorts
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/opt
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)
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set(OSMIUM_INCLUDE_DIRS "${OSMIUM_INCLUDE_DIR}")
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#----------------------------------------------------------------------
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#
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# Check for optional components
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#
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#----------------------------------------------------------------------
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if(Osmium_FIND_COMPONENTS)
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foreach(_component ${Osmium_FIND_COMPONENTS})
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string(TOUPPER ${_component} _component_uppercase)
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set(Osmium_USE_${_component_uppercase} TRUE)
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endforeach()
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endif()
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#----------------------------------------------------------------------
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# Component 'io' is an alias for 'pbf' and 'xml'
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if(Osmium_USE_IO)
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set(Osmium_USE_PBF TRUE)
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set(Osmium_USE_XML TRUE)
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endif()
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#----------------------------------------------------------------------
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# Component 'ogr' is an alias for 'gdal'
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if(Osmium_USE_OGR)
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set(Osmium_USE_GDAL TRUE)
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endif()
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#----------------------------------------------------------------------
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# Component 'pbf'
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if(Osmium_USE_PBF)
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find_package(ZLIB)
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find_package(Threads)
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list(APPEND OSMIUM_EXTRA_FIND_VARS ZLIB_FOUND Threads_FOUND)
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if(ZLIB_FOUND AND Threads_FOUND)
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list(APPEND OSMIUM_PBF_LIBRARIES
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${ZLIB_LIBRARIES}
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${CMAKE_THREAD_LIBS_INIT}
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)
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if(WIN32)
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list(APPEND OSMIUM_PBF_LIBRARIES ws2_32)
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endif()
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list(APPEND OSMIUM_INCLUDE_DIRS
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${ZLIB_INCLUDE_DIR}
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)
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else()
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message(WARNING "Osmium: Can not find some libraries for PBF input/output, please install them or configure the paths.")
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endif()
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endif()
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#----------------------------------------------------------------------
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# Component 'xml'
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if(Osmium_USE_XML)
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find_package(EXPAT)
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find_package(BZip2)
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find_package(ZLIB)
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find_package(Threads)
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list(APPEND OSMIUM_EXTRA_FIND_VARS EXPAT_FOUND BZIP2_FOUND ZLIB_FOUND Threads_FOUND)
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if(EXPAT_FOUND AND BZIP2_FOUND AND ZLIB_FOUND AND Threads_FOUND)
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list(APPEND OSMIUM_XML_LIBRARIES
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${EXPAT_LIBRARIES}
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${BZIP2_LIBRARIES}
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${ZLIB_LIBRARIES}
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${CMAKE_THREAD_LIBS_INIT}
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)
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list(APPEND OSMIUM_INCLUDE_DIRS
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${EXPAT_INCLUDE_DIR}
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${BZIP2_INCLUDE_DIR}
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${ZLIB_INCLUDE_DIR}
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)
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else()
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message(WARNING "Osmium: Can not find some libraries for XML input/output, please install them or configure the paths.")
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endif()
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endif()
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#----------------------------------------------------------------------
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list(APPEND OSMIUM_IO_LIBRARIES
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${OSMIUM_PBF_LIBRARIES}
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${OSMIUM_XML_LIBRARIES}
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)
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list(APPEND OSMIUM_LIBRARIES
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${OSMIUM_IO_LIBRARIES}
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)
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#----------------------------------------------------------------------
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# Component 'geos'
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if(Osmium_USE_GEOS)
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find_path(GEOS_INCLUDE_DIR geos/geom.h)
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find_library(GEOS_LIBRARY NAMES geos)
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list(APPEND OSMIUM_EXTRA_FIND_VARS GEOS_INCLUDE_DIR GEOS_LIBRARY)
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if(GEOS_INCLUDE_DIR AND GEOS_LIBRARY)
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SET(GEOS_FOUND 1)
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list(APPEND OSMIUM_LIBRARIES ${GEOS_LIBRARY})
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list(APPEND OSMIUM_INCLUDE_DIRS ${GEOS_INCLUDE_DIR})
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else()
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message(WARNING "Osmium: GEOS library is required but not found, please install it or configure the paths.")
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endif()
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endif()
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#----------------------------------------------------------------------
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# Component 'gdal' (alias 'ogr')
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if(Osmium_USE_GDAL)
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find_package(GDAL)
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list(APPEND OSMIUM_EXTRA_FIND_VARS GDAL_FOUND)
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if(GDAL_FOUND)
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list(APPEND OSMIUM_LIBRARIES ${GDAL_LIBRARIES})
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list(APPEND OSMIUM_INCLUDE_DIRS ${GDAL_INCLUDE_DIRS})
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else()
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message(WARNING "Osmium: GDAL library is required but not found, please install it or configure the paths.")
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endif()
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endif()
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#----------------------------------------------------------------------
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# Component 'proj'
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if(Osmium_USE_PROJ)
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find_path(PROJ_INCLUDE_DIR proj_api.h)
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find_library(PROJ_LIBRARY NAMES proj)
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list(APPEND OSMIUM_EXTRA_FIND_VARS PROJ_INCLUDE_DIR PROJ_LIBRARY)
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if(PROJ_INCLUDE_DIR AND PROJ_LIBRARY)
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set(PROJ_FOUND 1)
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list(APPEND OSMIUM_LIBRARIES ${PROJ_LIBRARY})
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list(APPEND OSMIUM_INCLUDE_DIRS ${PROJ_INCLUDE_DIR})
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else()
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message(WARNING "Osmium: PROJ.4 library is required but not found, please install it or configure the paths.")
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endif()
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endif()
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#----------------------------------------------------------------------
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# Component 'sparsehash'
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if(Osmium_USE_SPARSEHASH)
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find_path(SPARSEHASH_INCLUDE_DIR google/sparsetable)
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list(APPEND OSMIUM_EXTRA_FIND_VARS SPARSEHASH_INCLUDE_DIR)
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if(SPARSEHASH_INCLUDE_DIR)
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# Find size of sparsetable::size_type. This does not work on older
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# CMake versions because they can do this check only in C, not in C++.
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if (NOT CMAKE_VERSION VERSION_LESS 3.0)
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include(CheckTypeSize)
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set(CMAKE_REQUIRED_INCLUDES ${SPARSEHASH_INCLUDE_DIR})
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set(CMAKE_EXTRA_INCLUDE_FILES "google/sparsetable")
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check_type_size("google::sparsetable<int>::size_type" SPARSETABLE_SIZE_TYPE LANGUAGE CXX)
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set(CMAKE_EXTRA_INCLUDE_FILES)
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set(CMAKE_REQUIRED_INCLUDES)
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else()
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set(SPARSETABLE_SIZE_TYPE ${CMAKE_SIZEOF_VOID_P})
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endif()
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# Sparsetable::size_type must be at least 8 bytes (64bit), otherwise
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# OSM object IDs will not fit.
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if(SPARSETABLE_SIZE_TYPE GREATER 7)
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set(SPARSEHASH_FOUND 1)
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add_definitions(-DOSMIUM_WITH_SPARSEHASH=${SPARSEHASH_FOUND})
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list(APPEND OSMIUM_INCLUDE_DIRS ${SPARSEHASH_INCLUDE_DIR})
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else()
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message(WARNING "Osmium: Disabled Google SparseHash library on 32bit system (size_type=${SPARSETABLE_SIZE_TYPE}).")
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endif()
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else()
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message(WARNING "Osmium: Google SparseHash library is required but not found, please install it or configure the paths.")
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endif()
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endif()
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#----------------------------------------------------------------------
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list(REMOVE_DUPLICATES OSMIUM_INCLUDE_DIRS)
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if(OSMIUM_XML_LIBRARIES)
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list(REMOVE_DUPLICATES OSMIUM_XML_LIBRARIES)
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endif()
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if(OSMIUM_PBF_LIBRARIES)
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list(REMOVE_DUPLICATES OSMIUM_PBF_LIBRARIES)
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endif()
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if(OSMIUM_IO_LIBRARIES)
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list(REMOVE_DUPLICATES OSMIUM_IO_LIBRARIES)
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endif()
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if(OSMIUM_LIBRARIES)
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list(REMOVE_DUPLICATES OSMIUM_LIBRARIES)
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endif()
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#----------------------------------------------------------------------
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#
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# Check that all required libraries are available
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#
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#----------------------------------------------------------------------
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if (OSMIUM_EXTRA_FIND_VARS)
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list(REMOVE_DUPLICATES OSMIUM_EXTRA_FIND_VARS)
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endif()
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# Handle the QUIETLY and REQUIRED arguments and set OSMIUM_FOUND to TRUE if
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# all listed variables are TRUE.
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Osmium REQUIRED_VARS OSMIUM_INCLUDE_DIR ${OSMIUM_EXTRA_FIND_VARS})
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unset(OSMIUM_EXTRA_FIND_VARS)
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#----------------------------------------------------------------------
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#
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# Add compiler flags
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#
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#----------------------------------------------------------------------
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add_definitions(-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64)
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if(MSVC)
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add_definitions(-wd4996)
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# Disable warning C4068: "unknown pragma" because we want it to ignore
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# pragmas for other compilers.
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add_definitions(-wd4068)
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# Disable warning C4715: "not all control paths return a value" because
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# it generates too many false positives.
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add_definitions(-wd4715)
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# Disable warning C4351: new behavior: elements of array '...' will be
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# default initialized. The new behaviour is correct and we don't support
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# old compilers anyway.
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add_definitions(-wd4351)
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add_definitions(-DNOMINMAX -DWIN32_LEAN_AND_MEAN -D_CRT_SECURE_NO_WARNINGS)
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endif()
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if(APPLE)
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# following only available from cmake 2.8.12:
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# add_compile_options(-stdlib=libc++)
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# so using this instead:
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add_definitions(-stdlib=libc++)
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set(LDFLAGS ${LDFLAGS} -stdlib=libc++)
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endif()
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#----------------------------------------------------------------------
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# This is a set of recommended warning options that can be added when compiling
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# libosmium code.
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if(MSVC)
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set(OSMIUM_WARNING_OPTIONS "/W3 /wd4514" CACHE STRING "Recommended warning options for libosmium")
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else()
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set(OSMIUM_WARNING_OPTIONS "-Wall -Wextra -pedantic -Wredundant-decls -Wdisabled-optimization -Wctor-dtor-privacy -Wnon-virtual-dtor -Woverloaded-virtual -Wsign-promo -Wold-style-cast" CACHE STRING "Recommended warning options for libosmium")
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endif()
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set(OSMIUM_DRACONIC_CLANG_OPTIONS "-Wdocumentation -Wunused-exception-parameter -Wmissing-declarations -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -Wno-unused-macros -Wno-exit-time-destructors -Wno-global-constructors -Wno-padded -Wno-switch-enum -Wno-missing-prototypes -Wno-weak-vtables -Wno-cast-align -Wno-float-equal")
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||||||
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if(Osmium_DEBUG)
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message(STATUS "OSMIUM_XML_LIBRARIES=" ${OSMIUM_XML_LIBRARIES})
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message(STATUS "OSMIUM_PBF_LIBRARIES=" ${OSMIUM_PBF_LIBRARIES})
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message(STATUS "OSMIUM_IO_LIBRARIES=" ${OSMIUM_IO_LIBRARIES})
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message(STATUS "OSMIUM_LIBRARIES=" ${OSMIUM_LIBRARIES})
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message(STATUS "OSMIUM_INCLUDE_DIRS=" ${OSMIUM_INCLUDE_DIRS})
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endif()
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37
examples/cpp/default.nix
Normal file
37
examples/cpp/default.nix
Normal file
@ -0,0 +1,37 @@
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{
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||||||
|
# import the sources
|
||||||
|
sources ? import ./nix/sources.nix
|
||||||
|
}:
|
||||||
|
let
|
||||||
|
pkgs = import sources.nixpkgs {
|
||||||
|
overlays = [ (import ./overlay.nix) ];
|
||||||
|
};
|
||||||
|
in
|
||||||
|
with pkgs;
|
||||||
|
|
||||||
|
stdenv.mkDerivation {
|
||||||
|
name = "nix-cpp-demo";
|
||||||
|
nativeBuildInputs = [ cmake pkgconfig];
|
||||||
|
src = ./.;
|
||||||
|
|
||||||
|
# tell Cmake location of all headers
|
||||||
|
cmakeFlags = [
|
||||||
|
"-DEXTERNAL_INCLUDE_DIRECTORIES=${stdenv.lib.strings.makeSearchPathOutput "dev" "include" libosmium.buildInputs}"
|
||||||
|
];
|
||||||
|
|
||||||
|
buildInputs = stdenv.lib.lists.concatLists[
|
||||||
|
# We want to check if dependencies exist using find_package
|
||||||
|
[
|
||||||
|
libosmium.buildInputs
|
||||||
|
]
|
||||||
|
# dependencies
|
||||||
|
[
|
||||||
|
libosmium
|
||||||
|
]
|
||||||
|
];
|
||||||
|
|
||||||
|
installPhase = ''
|
||||||
|
mkdir -p $out/bin
|
||||||
|
cp bin/hello-world $out/bin
|
||||||
|
'';
|
||||||
|
}
|
||||||
38
examples/cpp/nix/sources.json
Normal file
38
examples/cpp/nix/sources.json
Normal file
@ -0,0 +1,38 @@
|
|||||||
|
{
|
||||||
|
"libosmium": {
|
||||||
|
"branch": "master",
|
||||||
|
"description": "Fast and flexible C++ library for working with OpenStreetMap data.",
|
||||||
|
"homepage": "https://osmcode.org/libosmium/",
|
||||||
|
"owner": "osmcode",
|
||||||
|
"repo": "libosmium",
|
||||||
|
"rev": "a43ffb61cba34a07c240bcc591d88c9a863e9618",
|
||||||
|
"sha256": "0mlcvqrhp40bzj5r5j9nfc5vbis8hmzcq9xi8jylkciyydaynhz4",
|
||||||
|
"type": "tarball",
|
||||||
|
"url": "https://github.com/osmcode/libosmium/archive/a43ffb61cba34a07c240bcc591d88c9a863e9618.tar.gz",
|
||||||
|
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
|
||||||
|
},
|
||||||
|
"niv": {
|
||||||
|
"branch": "master",
|
||||||
|
"description": "Easy dependency management for Nix projects",
|
||||||
|
"homepage": "https://github.com/nmattia/niv",
|
||||||
|
"owner": "nmattia",
|
||||||
|
"repo": "niv",
|
||||||
|
"rev": "983e7a049aea1d2033e619368b9a5d6d394d51db",
|
||||||
|
"sha256": "1d3p53q8anl6x9f8wg1wbznq4vwrp2ns044w0gc03drp8nh0dfdm",
|
||||||
|
"type": "tarball",
|
||||||
|
"url": "https://github.com/nmattia/niv/archive/983e7a049aea1d2033e619368b9a5d6d394d51db.tar.gz",
|
||||||
|
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
|
||||||
|
},
|
||||||
|
"nixpkgs": {
|
||||||
|
"branch": "nixos-19.09",
|
||||||
|
"description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
|
||||||
|
"homepage": "https://github.com/NixOS/nixpkgs",
|
||||||
|
"owner": "NixOS",
|
||||||
|
"repo": "nixpkgs-channels",
|
||||||
|
"rev": "d85e435b7bded2596d7b201bcd938c94d8a921c1",
|
||||||
|
"sha256": "1msjm4kx1z73v444i1iybvmc7z0kfkbn9nzr21rn5yc4ql1jwf99",
|
||||||
|
"type": "tarball",
|
||||||
|
"url": "https://github.com/NixOS/nixpkgs-channels/archive/d85e435b7bded2596d7b201bcd938c94d8a921c1.tar.gz",
|
||||||
|
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
|
||||||
|
}
|
||||||
|
}
|
||||||
136
examples/cpp/nix/sources.nix
Normal file
136
examples/cpp/nix/sources.nix
Normal file
@ -0,0 +1,136 @@
|
|||||||
|
# This file has been generated by Niv.
|
||||||
|
|
||||||
|
let
|
||||||
|
|
||||||
|
#
|
||||||
|
# The fetchers. fetch_<type> fetches specs of type <type>.
|
||||||
|
#
|
||||||
|
|
||||||
|
fetch_file = pkgs: spec:
|
||||||
|
if spec.builtin or true then
|
||||||
|
builtins_fetchurl { inherit (spec) url sha256; }
|
||||||
|
else
|
||||||
|
pkgs.fetchurl { inherit (spec) url sha256; };
|
||||||
|
|
||||||
|
fetch_tarball = pkgs: spec:
|
||||||
|
if spec.builtin or true then
|
||||||
|
builtins_fetchTarball { inherit (spec) url sha256; }
|
||||||
|
else
|
||||||
|
pkgs.fetchzip { inherit (spec) url sha256; };
|
||||||
|
|
||||||
|
fetch_git = spec:
|
||||||
|
builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };
|
||||||
|
|
||||||
|
fetch_builtin-tarball = spec:
|
||||||
|
builtins.trace
|
||||||
|
''
|
||||||
|
WARNING:
|
||||||
|
The niv type "builtin-tarball" will soon be deprecated. You should
|
||||||
|
instead use `builtin = true`.
|
||||||
|
|
||||||
|
$ niv modify <package> -a type=tarball -a builtin=true
|
||||||
|
''
|
||||||
|
builtins_fetchTarball { inherit (spec) url sha256; };
|
||||||
|
|
||||||
|
fetch_builtin-url = spec:
|
||||||
|
builtins.trace
|
||||||
|
''
|
||||||
|
WARNING:
|
||||||
|
The niv type "builtin-url" will soon be deprecated. You should
|
||||||
|
instead use `builtin = true`.
|
||||||
|
|
||||||
|
$ niv modify <package> -a type=file -a builtin=true
|
||||||
|
''
|
||||||
|
(builtins_fetchurl { inherit (spec) url sha256; });
|
||||||
|
|
||||||
|
#
|
||||||
|
# Various helpers
|
||||||
|
#
|
||||||
|
|
||||||
|
# The set of packages used when specs are fetched using non-builtins.
|
||||||
|
mkPkgs = sources:
|
||||||
|
if hasNixpkgsPath
|
||||||
|
then
|
||||||
|
if hasThisAsNixpkgsPath
|
||||||
|
then import (builtins_fetchTarball { inherit (mkNixpkgs sources) url sha256; }) {}
|
||||||
|
else import <nixpkgs> {}
|
||||||
|
else
|
||||||
|
import (builtins_fetchTarball { inherit (mkNixpkgs sources) url sha256; }) {};
|
||||||
|
|
||||||
|
mkNixpkgs = sources:
|
||||||
|
if builtins.hasAttr "nixpkgs" sources
|
||||||
|
then sources.nixpkgs
|
||||||
|
else abort
|
||||||
|
''
|
||||||
|
Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
|
||||||
|
add a package called "nixpkgs" to your sources.json.
|
||||||
|
'';
|
||||||
|
|
||||||
|
hasNixpkgsPath = (builtins.tryEval <nixpkgs>).success;
|
||||||
|
hasThisAsNixpkgsPath =
|
||||||
|
(builtins.tryEval <nixpkgs>).success && <nixpkgs> == ./.;
|
||||||
|
|
||||||
|
# The actual fetching function.
|
||||||
|
fetch = pkgs: name: spec:
|
||||||
|
|
||||||
|
if ! builtins.hasAttr "type" spec then
|
||||||
|
abort "ERROR: niv spec ${name} does not have a 'type' attribute"
|
||||||
|
else if spec.type == "file" then fetch_file pkgs spec
|
||||||
|
else if spec.type == "tarball" then fetch_tarball pkgs spec
|
||||||
|
else if spec.type == "git" then fetch_git spec
|
||||||
|
else if spec.type == "builtin-tarball" then fetch_builtin-tarball spec
|
||||||
|
else if spec.type == "builtin-url" then fetch_builtin-url spec
|
||||||
|
else
|
||||||
|
abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
|
||||||
|
|
||||||
|
# Ports of functions for older nix versions
|
||||||
|
|
||||||
|
# a Nix version of mapAttrs if the built-in doesn't exist
|
||||||
|
mapAttrs = builtins.mapAttrs or (
|
||||||
|
f: set: with builtins;
|
||||||
|
listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
|
||||||
|
);
|
||||||
|
|
||||||
|
# fetchTarball version that is compatible between all the versions of Nix
|
||||||
|
builtins_fetchTarball = { url, sha256 }@attrs:
|
||||||
|
let
|
||||||
|
inherit (builtins) lessThan nixVersion fetchTarball;
|
||||||
|
in
|
||||||
|
if lessThan nixVersion "1.12" then
|
||||||
|
fetchTarball { inherit url; }
|
||||||
|
else
|
||||||
|
fetchTarball attrs;
|
||||||
|
|
||||||
|
# fetchurl version that is compatible between all the versions of Nix
|
||||||
|
builtins_fetchurl = { url, sha256 }@attrs:
|
||||||
|
let
|
||||||
|
inherit (builtins) lessThan nixVersion fetchurl;
|
||||||
|
in
|
||||||
|
if lessThan nixVersion "1.12" then
|
||||||
|
fetchurl { inherit url; }
|
||||||
|
else
|
||||||
|
fetchurl attrs;
|
||||||
|
|
||||||
|
# Create the final "sources" from the config
|
||||||
|
mkSources = config:
|
||||||
|
mapAttrs (
|
||||||
|
name: spec:
|
||||||
|
if builtins.hasAttr "outPath" spec
|
||||||
|
then abort
|
||||||
|
"The values in sources.json should not have an 'outPath' attribute"
|
||||||
|
else
|
||||||
|
spec // { outPath = fetch config.pkgs name spec; }
|
||||||
|
) config.sources;
|
||||||
|
|
||||||
|
# The "config" used by the fetchers
|
||||||
|
mkConfig =
|
||||||
|
{ sourcesFile ? ./sources.json
|
||||||
|
}: rec {
|
||||||
|
# The sources, i.e. the attribute set of spec name to spec
|
||||||
|
sources = builtins.fromJSON (builtins.readFile sourcesFile);
|
||||||
|
# The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
|
||||||
|
pkgs = mkPkgs sources;
|
||||||
|
};
|
||||||
|
in
|
||||||
|
mkSources (mkConfig {}) //
|
||||||
|
{ __functor = _: settings: mkSources (mkConfig settings); }
|
||||||
3
examples/cpp/overlay.nix
Normal file
3
examples/cpp/overlay.nix
Normal file
@ -0,0 +1,3 @@
|
|||||||
|
self: super: {
|
||||||
|
libosmium = self.callPackage ./overlay/libosmium.nix {};
|
||||||
|
}
|
||||||
22
examples/cpp/overlay/libosmium.nix
Normal file
22
examples/cpp/overlay/libosmium.nix
Normal file
@ -0,0 +1,22 @@
|
|||||||
|
{ stdenv, fetchFromGitHub, cmake, protozero, expat, zlib, bzip2, boost, sources ? import ../nix/sources.nix }:
|
||||||
|
|
||||||
|
stdenv.mkDerivation rec {
|
||||||
|
name = "libosmium";
|
||||||
|
src = sources.libosmium;
|
||||||
|
|
||||||
|
nativeBuildInputs = [ cmake ];
|
||||||
|
cmakeFlags = [
|
||||||
|
"-DBUILD_BENCHMARKS=OFF"
|
||||||
|
"-DBUILD_DATA_TESTS=OFF"
|
||||||
|
"-DBUILD_EXAMPLES=OFF"
|
||||||
|
"-DBUILD_HEADERS=OFF"
|
||||||
|
"-DBUILD_TESTING=OFF"
|
||||||
|
];
|
||||||
|
buildInputs = [
|
||||||
|
protozero
|
||||||
|
expat
|
||||||
|
zlib
|
||||||
|
bzip2
|
||||||
|
boost
|
||||||
|
];
|
||||||
|
}
|
||||||
16
examples/cpp/src/CMakeLists.txt
Normal file
16
examples/cpp/src/CMakeLists.txt
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
# ---[ Include sources
|
||||||
|
set(SOURCES_CPP
|
||||||
|
main.cpp
|
||||||
|
)
|
||||||
|
|
||||||
|
# ---[ Fetch all include headers
|
||||||
|
file(GLOB_RECURSE INCLUDE_HEADERS include/*.h)
|
||||||
|
|
||||||
|
# ---[ Add the executable
|
||||||
|
add_executable(${PROJECT_NAME} ${SOURCES_CPP} ${INCLUDE_HEADERS})
|
||||||
|
|
||||||
|
#link executable to dependency libraries
|
||||||
|
target_link_libraries (
|
||||||
|
${PROJECT_NAME}
|
||||||
|
${OSMIUM_LIBRARIES}
|
||||||
|
)
|
||||||
9
examples/cpp/src/main.cpp
Normal file
9
examples/cpp/src/main.cpp
Normal file
@ -0,0 +1,9 @@
|
|||||||
|
#include <iostream>
|
||||||
|
#include <osmium/io/pbf_input.hpp>
|
||||||
|
|
||||||
|
using namespace std;
|
||||||
|
int main()
|
||||||
|
{
|
||||||
|
cout << "Hello, World!\n";
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user