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flightgear/CMakeModules/FindLibEvent.cmake
James Turner 740193a378 CMake: different fix for ALIAS issues with 3.10
ALIAS is not really functional in 3.10, so use a variable to approximate
the same behaviour. Not elegant but it seems to work.
2020-08-27 22:33:08 +01:00

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CMake

# Finding LibEvent (https://libevent.org/)
# Defining:
# LIBEVENT_LIB
# LIBEVENT_INCLUDE_DIR
set(libEvent_target "_no_target_")
if(WIN32)
FIND_PATH(LIBEVENT_INCLUDE_DIR event2/event.h PATH_SUFFIXES include HINTS ${ADDITIONAL_LIBRARY_PATHS})
FIND_LIBRARY(LIBEVENT_LIB NAMES event_core PATH_SUFFIXES lib HINTS ${ADDITIONAL_LIBRARY_PATHS})
if (LIBEVENT_INCLUDE_DIR AND LIBEVENT_LIB)
add_library(libEvent UNKNOWN IMPORTED)
set_target_properties(libEvent PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${LIBEVENT_INCLUDE_DIR}"
IMPORTED_LOCATION "${LIBEVENT_LIB}"
)
endif()
else()
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_check_modules(libEvent IMPORTED_TARGET libevent)
endif()
if(libEvent_FOUND)
# can't use an ALIAS here, needs CMake 3.11
# use a global property instead
set(libEvent_target "PkgConfig::libEvent")
endif()
endif(WIN32)