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Create FindSodium.cmake
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cmake/FindSodium.cmake
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293
cmake/FindSodium.cmake
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# Written in 2016 by Henrik Steffen Gaßmann <henrik@gassmann.onl>
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#
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# To the extent possible under law, the author(s) have dedicated all copyright
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# and related and neighboring rights to this software to the public domain
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# worldwide. This software is distributed without any warranty.
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#
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# You should have received a copy of the CC0 Public Domain Dedication along with
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# this software. If not, see
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#
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# http://creativecommons.org/publicdomain/zero/1.0/
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#
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# ##############################################################################
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# Tries to find the local libsodium installation.
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#
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# On Windows the sodium_DIR environment variable is used as a default hint which
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# can be overridden by setting the corresponding cmake variable.
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#
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# Once done the following variables will be defined:
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#
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# sodium_FOUND sodium_INCLUDE_DIR sodium_LIBRARY_DEBUG sodium_LIBRARY_RELEASE
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# sodium_VERSION_STRING
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#
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# Furthermore an imported "sodium" target is created.
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#
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if(CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
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set(_GCC_COMPATIBLE 1)
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endif()
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# static library option
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if(NOT DEFINED sodium_USE_STATIC_LIBS)
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option(sodium_USE_STATIC_LIBS "enable to statically link against sodium" OFF)
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endif()
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if(NOT (sodium_USE_STATIC_LIBS EQUAL sodium_USE_STATIC_LIBS_LAST))
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unset(sodium_LIBRARY CACHE)
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unset(sodium_LIBRARY_DEBUG CACHE)
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unset(sodium_LIBRARY_RELEASE CACHE)
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unset(sodium_DLL_DEBUG CACHE)
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unset(sodium_DLL_RELEASE CACHE)
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set(sodium_USE_STATIC_LIBS_LAST
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${sodium_USE_STATIC_LIBS}
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CACHE INTERNAL "internal change tracking variable")
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endif()
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# ##############################################################################
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# UNIX
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if(UNIX)
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# import pkg-config
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find_package(PkgConfig)
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if(PKG_CONFIG_FOUND)
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pkg_check_modules(sodium_PKG QUIET libsodium)
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endif()
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if(sodium_USE_STATIC_LIBS)
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if(sodium_PKG_STATIC_LIBRARIES)
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foreach(_libname ${sodium_PKG_STATIC_LIBRARIES})
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if(NOT _libname MATCHES "^lib.*\\.a$") # ignore strings already ending
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# with .a
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list(INSERT sodium_PKG_STATIC_LIBRARIES 0 "lib${_libname}.a")
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endif()
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endforeach()
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list(REMOVE_DUPLICATES sodium_PKG_STATIC_LIBRARIES)
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else()
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# if pkgconfig for libsodium doesn't provide static lib info, then
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# override PKG_STATIC here..
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set(sodium_PKG_STATIC_LIBRARIES libsodium.a)
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endif()
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set(XPREFIX sodium_PKG_STATIC)
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else()
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if(sodium_PKG_LIBRARIES STREQUAL "")
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set(sodium_PKG_LIBRARIES sodium)
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endif()
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set(XPREFIX sodium_PKG)
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endif()
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find_path(sodium_INCLUDE_DIR sodium.h HINTS ${${XPREFIX}_INCLUDE_DIRS})
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find_library(sodium_LIBRARY_DEBUG
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NAMES ${${XPREFIX}_LIBRARIES}
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HINTS ${${XPREFIX}_LIBRARY_DIRS})
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find_library(sodium_LIBRARY_RELEASE
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NAMES ${${XPREFIX}_LIBRARIES}
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HINTS ${${XPREFIX}_LIBRARY_DIRS})
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# ############################################################################
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# Windows
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elseif(WIN32)
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set(sodium_DIR "$ENV{sodium_DIR}" CACHE FILEPATH "sodium install directory")
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mark_as_advanced(sodium_DIR)
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find_path(sodium_INCLUDE_DIR sodium.h
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HINTS ${sodium_DIR}
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PATH_SUFFIXES include)
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if(MSVC)
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# detect target architecture
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file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/arch.cpp" [=[
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#if defined _M_IX86
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#error ARCH_VALUE x86_32
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#elif defined _M_X64
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#error ARCH_VALUE x86_64
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#endif
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#error ARCH_VALUE unknown
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]=])
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try_compile(_UNUSED_VAR "${CMAKE_CURRENT_BINARY_DIR}"
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"${CMAKE_CURRENT_BINARY_DIR}/arch.cpp"
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OUTPUT_VARIABLE _COMPILATION_LOG)
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string(REGEX
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REPLACE ".*ARCH_VALUE ([a-zA-Z0-9_]+).*"
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"\\1"
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_TARGET_ARCH
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"${_COMPILATION_LOG}")
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# construct library path
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if(_TARGET_ARCH STREQUAL "x86_32")
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string(APPEND _PLATFORM_PATH "Win32")
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elseif(_TARGET_ARCH STREQUAL "x86_64")
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string(APPEND _PLATFORM_PATH "x64")
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else()
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message(
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FATAL_ERROR
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"the ${_TARGET_ARCH} architecture is not supported by Findsodium.cmake."
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)
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endif()
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string(APPEND _PLATFORM_PATH "/$$CONFIG$$")
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if(MSVC_VERSION LESS 1900)
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math(EXPR _VS_VERSION "${MSVC_VERSION} / 10 - 60")
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else()
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math(EXPR _VS_VERSION "${MSVC_VERSION} / 10 - 50")
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endif()
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string(APPEND _PLATFORM_PATH "/v${_VS_VERSION}")
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if(sodium_USE_STATIC_LIBS)
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string(APPEND _PLATFORM_PATH "/static")
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else()
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string(APPEND _PLATFORM_PATH "/dynamic")
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endif()
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string(REPLACE "$$CONFIG$$"
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"Debug"
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_DEBUG_PATH_SUFFIX
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"${_PLATFORM_PATH}")
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string(REPLACE "$$CONFIG$$"
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"Release"
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_RELEASE_PATH_SUFFIX
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"${_PLATFORM_PATH}")
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find_library(sodium_LIBRARY_DEBUG libsodium.lib
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HINTS ${sodium_DIR}
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PATH_SUFFIXES ${_DEBUG_PATH_SUFFIX})
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find_library(sodium_LIBRARY_RELEASE libsodium.lib
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HINTS ${sodium_DIR}
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PATH_SUFFIXES ${_RELEASE_PATH_SUFFIX})
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if(NOT sodium_USE_STATIC_LIBS)
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set(CMAKE_FIND_LIBRARY_SUFFIXES_BCK ${CMAKE_FIND_LIBRARY_SUFFIXES})
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set(CMAKE_FIND_LIBRARY_SUFFIXES ".dll")
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find_library(sodium_DLL_DEBUG libsodium
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HINTS ${sodium_DIR}
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PATH_SUFFIXES ${_DEBUG_PATH_SUFFIX})
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find_library(sodium_DLL_RELEASE libsodium
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HINTS ${sodium_DIR}
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PATH_SUFFIXES ${_RELEASE_PATH_SUFFIX})
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set(CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES_BCK})
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endif()
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elseif(_GCC_COMPATIBLE)
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if(sodium_USE_STATIC_LIBS)
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find_library(sodium_LIBRARY_DEBUG libsodium.a
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HINTS ${sodium_DIR}
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PATH_SUFFIXES lib)
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find_library(sodium_LIBRARY_RELEASE libsodium.a
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HINTS ${sodium_DIR}
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PATH_SUFFIXES lib)
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else()
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find_library(sodium_LIBRARY_DEBUG libsodium.dll.a
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HINTS ${sodium_DIR}
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PATH_SUFFIXES lib)
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find_library(sodium_LIBRARY_RELEASE libsodium.dll.a
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HINTS ${sodium_DIR}
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PATH_SUFFIXES lib)
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file(GLOB _DLL
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LIST_DIRECTORIES false
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RELATIVE "${sodium_DIR}/bin"
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"${sodium_DIR}/bin/libsodium*.dll")
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find_library(sodium_DLL_DEBUG ${_DLL} libsodium
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HINTS ${sodium_DIR}
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PATH_SUFFIXES bin)
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find_library(sodium_DLL_RELEASE ${_DLL} libsodium
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HINTS ${sodium_DIR}
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PATH_SUFFIXES bin)
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endif()
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else()
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message(FATAL_ERROR "this platform is not supported by FindSodium.cmake")
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endif()
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# ############################################################################
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# unsupported
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else()
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message(FATAL_ERROR "this platform is not supported by FindSodium.cmake")
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endif()
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# ##############################################################################
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# common stuff
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# extract sodium version
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if(sodium_INCLUDE_DIR)
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set(_VERSION_HEADER "${sodium_INCLUDE_DIR}/sodium/version.h")
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if(EXISTS "${_VERSION_HEADER}")
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file(READ "${_VERSION_HEADER}" _VERSION_HEADER_CONTENT)
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string(
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REGEX
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REPLACE
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".*#define[ \t]*SODIUM_VERSION_STRING[ \t]*\"([^\n]*)\".*"
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"\\1"
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sodium_VERSION_STRING
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"${_VERSION_HEADER_CONTENT}")
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set(sodium_VERSION_STRING "${sodium_VERSION_STRING}")
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endif()
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endif()
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# communicate results
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(sodium
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REQUIRED_VARS
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sodium_LIBRARY_RELEASE
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sodium_LIBRARY_DEBUG
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sodium_INCLUDE_DIR
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VERSION_VAR
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sodium_VERSION_STRING)
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# mark file paths as advanced
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mark_as_advanced(sodium_INCLUDE_DIR)
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mark_as_advanced(sodium_LIBRARY_DEBUG)
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mark_as_advanced(sodium_LIBRARY_RELEASE)
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if(WIN32)
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mark_as_advanced(sodium_DLL_DEBUG)
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mark_as_advanced(sodium_DLL_RELEASE)
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endif()
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# create imported target
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if(sodium_USE_STATIC_LIBS)
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set(_LIB_TYPE STATIC)
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else()
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set(_LIB_TYPE SHARED)
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endif()
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add_library(sodium ${_LIB_TYPE} IMPORTED)
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set_target_properties(sodium
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PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
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"${sodium_INCLUDE_DIR}"
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IMPORTED_LINK_INTERFACE_LANGUAGES
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"C")
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if(sodium_USE_STATIC_LIBS)
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set_target_properties(sodium
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PROPERTIES INTERFACE_COMPILE_DEFINITIONS
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"SODIUM_STATIC"
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IMPORTED_LOCATION
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"${sodium_LIBRARY_RELEASE}"
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IMPORTED_LOCATION_DEBUG
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"${sodium_LIBRARY_DEBUG}")
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else()
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if(UNIX)
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set_target_properties(sodium
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PROPERTIES IMPORTED_LOCATION
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"${sodium_LIBRARY_RELEASE}"
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IMPORTED_LOCATION_DEBUG
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"${sodium_LIBRARY_DEBUG}")
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elseif(WIN32)
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set_target_properties(sodium
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PROPERTIES IMPORTED_IMPLIB
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"${sodium_LIBRARY_RELEASE}"
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IMPORTED_IMPLIB_DEBUG
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"${sodium_LIBRARY_DEBUG}")
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if(NOT (sodium_DLL_DEBUG MATCHES ".*-NOTFOUND"))
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set_target_properties(sodium
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PROPERTIES IMPORTED_LOCATION_DEBUG
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"${sodium_DLL_DEBUG}")
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endif()
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if(NOT (sodium_DLL_RELEASE MATCHES ".*-NOTFOUND"))
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set_target_properties(sodium
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PROPERTIES IMPORTED_LOCATION_RELWITHDEBINFO
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"${sodium_DLL_RELEASE}"
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IMPORTED_LOCATION_MINSIZEREL
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"${sodium_DLL_RELEASE}"
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IMPORTED_LOCATION_RELEASE
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"${sodium_DLL_RELEASE}")
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endif()
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endif()
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endif()
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