transmission/cmake/FindUTP.cmake

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if(UTP_PREFER_STATIC_LIB)
set(UTP_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(_UTP QUIET libutp)
endif()
find_path(UTP_INCLUDE_DIR NAMES libutp/utp.h HINTS ${_UTP_INCLUDEDIR})
find_library(UTP_LIBRARY NAMES utp HINTS ${_UTP_LIBDIR})
if(UTP_INCLUDE_DIR AND UTP_LIBRARY)
include(CheckSymbolExists)
set(_UTP_FUNCS
utp_check_timeouts
utp_close
utp_connect
utp_context_get_userdata
utp_context_set_option
utp_context_set_userdata
utp_create_socket
utp_destroy
utp_getpeername
utp_get_userdata
utp_init
utp_issue_deferred_acks
utp_process_udp
utp_read_drained
utp_set_callback
utp_set_userdata
utp_write
utp_writev
)
set(_UTP_OLD_CMAKE_REQUIRED_INCLUDES "${CMAKE_REQUIRED_INCLUDES}")
set(_UTP_OLD_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}")
set(_UTP_OLD_CMAKE_REQUIRED_QUIET "${CMAKE_REQUIRED_QUIET}")
set(CMAKE_REQUIRED_INCLUDES "${UTP_INCLUDE_DIR}")
set(CMAKE_REQUIRED_LIBRARIES "${UTP_LIBRARY}")
set(CMAKE_REQUIRED_QUIET ON)
foreach(_UTP_FUNC IN LISTS _UTP_FUNCS)
string(MAKE_C_IDENTIFIER "HAVE_${_UTP_FUNC}" _UTP_FUNC_VAR)
string(TOUPPER "${_UTP_FUNC_VAR}" _UTP_FUNC_VAR)
check_symbol_exists(${_UTP_FUNC} libutp/utp.h ${_UTP_FUNC_VAR})
if(NOT ${_UTP_FUNC_VAR})
unset(UTP_INCLUDE_DIR CACHE)
unset(UTP_LIBRARY CACHE)
break()
endif()
endforeach()
set(CMAKE_REQUIRED_INCLUDES "${_UTP_OLD_CMAKE_REQUIRED_INCLUDES}")
set(CMAKE_REQUIRED_LIBRARIES "${_UTP_OLD_CMAKE_REQUIRED_LIBRARIES}")
set(CMAKE_REQUIRED_QUIET "${_UTP_OLD_CMAKE_REQUIRED_QUIET}")
endif()
set(UTP_INCLUDE_DIRS ${UTP_INCLUDE_DIR})
set(UTP_LIBRARIES ${UTP_LIBRARY})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(UTP
REQUIRED_VARS
UTP_LIBRARY
UTP_INCLUDE_DIR
)
mark_as_advanced(UTP_INCLUDE_DIR UTP_LIBRARY)
if(UTP_PREFER_STATIC_LIB)
set(CMAKE_FIND_LIBRARY_SUFFIXES ${UTP_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
unset(UTP_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES)
endif()