mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
63 lines
2.7 KiB
CMake
63 lines
2.7 KiB
CMake
include(ExternalProject)
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if (${CMAKE_SYSTEM_NAME} STREQUAL "Emscripten")
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set(JSONCPP_CMAKE_COMMAND emcmake cmake)
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else()
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set(JSONCPP_CMAKE_COMMAND ${CMAKE_COMMAND})
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endif()
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set(prefix "${CMAKE_BINARY_DIR}/deps")
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set(JSONCPP_LIBRARY "${prefix}/lib/${CMAKE_STATIC_LIBRARY_PREFIX}jsoncpp${CMAKE_STATIC_LIBRARY_SUFFIX}")
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set(JSONCPP_INCLUDE_DIR "${prefix}/include")
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# TODO: Investigate why this breaks some emscripten builds and
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# check whether this can be removed after updating the emscripten
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# versions used in the CI runs.
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if(EMSCRIPTEN)
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# Do not include all flags in CMAKE_CXX_FLAGS for emscripten,
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# but only use -std=c++17. Using all flags causes build failures
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# at the moment.
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set(JSONCPP_CXX_FLAGS -std=c++17)
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else()
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# jsoncpp uses implicit casts for comparing integer and
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# floating point numbers. This causes clang-10 (used by ossfuzz builder)
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# to error on the implicit conversions. Here, we request jsoncpp
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# to unconditionally use static casts for these conversions by defining the
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# JSON_USE_INT64_DOUBLE_CONVERSION preprocessor macro. Doing so,
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# not only gets rid of the implicit conversion error that clang-10 produces
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# but also forces safer behavior in general.
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set(JSONCPP_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DJSON_USE_INT64_DOUBLE_CONVERSION")
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endif()
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set(byproducts "")
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if(CMAKE_VERSION VERSION_GREATER 3.1)
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set(byproducts BUILD_BYPRODUCTS "${JSONCPP_LIBRARY}")
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endif()
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ExternalProject_Add(jsoncpp-project
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PREFIX "${prefix}"
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DOWNLOAD_DIR "${CMAKE_SOURCE_DIR}/deps/downloads"
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DOWNLOAD_NAME jsoncpp-1.8.4.tar.gz
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URL https://github.com/open-source-parsers/jsoncpp/archive/1.8.4.tar.gz
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URL_HASH SHA256=c49deac9e0933bcb7044f08516861a2d560988540b23de2ac1ad443b219afdb6
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CMAKE_COMMAND ${JSONCPP_CMAKE_COMMAND}
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CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
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-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
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-DCMAKE_INSTALL_LIBDIR=lib
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# Build static lib but suitable to be included in a shared lib.
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-DCMAKE_POSITION_INDEPENDENT_CODE=${BUILD_SHARED_LIBS}
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-DJSONCPP_WITH_TESTS=OFF
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-DJSONCPP_WITH_PKGCONFIG_SUPPORT=OFF
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-DCMAKE_CXX_FLAGS=${JSONCPP_CXX_FLAGS}
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-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
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${byproducts}
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)
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# Create jsoncpp imported library
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add_library(jsoncpp STATIC IMPORTED)
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file(MAKE_DIRECTORY ${JSONCPP_INCLUDE_DIR}) # Must exist.
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set_property(TARGET jsoncpp PROPERTY IMPORTED_LOCATION ${JSONCPP_LIBRARY})
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set_property(TARGET jsoncpp PROPERTY INTERFACE_SYSTEM_INCLUDE_DIRECTORIES ${JSONCPP_INCLUDE_DIR})
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set_property(TARGET jsoncpp PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${JSONCPP_INCLUDE_DIR})
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add_dependencies(jsoncpp jsoncpp-project)
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