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transmission/cmake/FindEVENT2.cmake

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if(EVENT2_PREFER_STATIC_LIB)
set(EVENT2_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
if(WIN32)
set(CMAKE_FIND_LIBRARY_SUFFIXES .a .lib ${CMAKE_FIND_LIBRARY_SUFFIXES})
else()
set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
endif()
if(UNIX)
find_package(PkgConfig QUIET)
pkg_check_modules(_EVENT2 QUIET libevent)
endif()
find_path(EVENT2_INCLUDE_DIR NAMES event2/event.h HINTS ${_EVENT2_INCLUDEDIR})
find_library(EVENT2_LIBRARY NAMES event-2.1 event HINTS ${_EVENT2_LIBDIR})
if(EVENT2_INCLUDE_DIR)
if(_EVENT2_VERSION)
set(EVENT2_VERSION ${_EVENT2_VERSION})
else()
file(STRINGS "${EVENT2_INCLUDE_DIR}/event2/event-config.h" EVENT2_VERSION_STR REGEX "^#define[\t ]+_EVENT_VERSION[\t ]+\"[^\"]+\"")
if(EVENT2_VERSION_STR MATCHES "\"([^\"]+)\"")
set(EVENT2_VERSION "${CMAKE_MATCH_1}")
endif()
endif()
endif()
set(EVENT2_INCLUDE_DIRS ${EVENT2_INCLUDE_DIR})
set(EVENT2_LIBRARIES ${EVENT2_LIBRARY})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(EVENT2
REQUIRED_VARS
EVENT2_LIBRARY
EVENT2_INCLUDE_DIR
VERSION_VAR
EVENT2_VERSION
)
mark_as_advanced(EVENT2_INCLUDE_DIR EVENT2_LIBRARY)
if(EVENT2_PREFER_STATIC_LIB)
set(CMAKE_FIND_LIBRARY_SUFFIXES ${EVENT2_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
unset(EVENT2_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES)
endif()