premiere-libtorrent/examples/cmake/FindLibtorrentRasterbar.cmake

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# - Try to find libtorrent-rasterbar
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#
# This module tries to locate libtorrent-rasterbar Config.cmake files and uses pkg-config if available
# and the config file could not be found.
# If that does not work, you can pre-set LibtorrentRasterbar_CUSTOM_DEFINITIONS
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# for definitions unrelated to Boost's separate compilation (which are already
# decided by the LibtorrentRasterbar_USE_STATIC_LIBS variable).
#
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# Once done this will define
# LibtorrentRasterbar_FOUND - System has libtorrent-rasterbar
# LibtorrentRasterbar_INCLUDE_DIRS - The libtorrent-rasterbar include directories
# LibtorrentRasterbar_LIBRARIES - The libraries needed to use libtorrent-rasterbar
# LibtorrentRasterbar_DEFINITIONS - Compiler switches required for using libtorrent-rasterbar
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# LibtorrentRasterbar_OPENSSL_ENABLED - libtorrent-rasterbar uses and links against OpenSSL
# LibtorrentRasterbar::torrent-rasterbar imported target will be created
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# Let's begin with the config mode
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set(_exactKeyword "")
if (${${CMAKE_FIND_PACKAGE_NAME}_FIND_VERSION_EXACT})
set(_exactKeyword "EXACT")
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endif()
find_package(LibtorrentRasterbar ${${CMAKE_FIND_PACKAGE_NAME}_FIND_VERSION} ${_exactKeyword} CONFIG)
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if (LibtorrentRasterbar_FOUND)
if (NOT ${CMAKE_FIND_PACKAGE_NAME}_FIND_QUIETLY)
message(STATUS "LibtorrentRasterbar package found in ${LibtorrentRasterbar_DIR}")
message(STATUS "LibtorrentRasterbar version: ${LibtorrentRasterbar_VERSION}")
endif()
# Extract target properties into this module variables
get_target_property(LibtorrentRasterbar_INCLUDE_DIRS LibtorrentRasterbar::torrent-rasterbar INTERFACE_INCLUDE_DIRECTORIES)
get_target_property(LibtorrentRasterbar_LIBRARIES LibtorrentRasterbar::torrent-rasterbar IMPORTED_LOCATION)
get_target_property(_iface_link_libs LibtorrentRasterbar::torrent-rasterbar INTERFACE_LINK_LIBRARIES)
list(APPEND LibtorrentRasterbar_LIBRARIES ${_iface_link_libs})
get_target_property(LibtorrentRasterbar_DEFINITIONS LibtorrentRasterbar::torrent-rasterbar INTERFACE_COMPILE_DEFINITIONS)
get_target_property(_iface_compile_options LibtorrentRasterbar::torrent-rasterbar INTERFACE_COMPILE_OPTIONS)
list(APPEND LibtorrentRasterbar_DEFINITIONS ${_iface_compile_options})
list(FIND _iface_link_libs "OpenSSL::SSL" _openssl_lib_index)
if (_openssl_lib_index GREATER -1)
set(LibtorrentRasterbar_OPENSSL_ENABLED TRUE)
else()
set(LibtorrentRasterbar_OPENSSL_ENABLED FALSE)
endif()
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else()
find_package(Threads QUIET REQUIRED)
find_package(PkgConfig QUIET)
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if(PKG_CONFIG_FOUND)
pkg_check_modules(PC_LIBTORRENT_RASTERBAR QUIET libtorrent-rasterbar)
endif()
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if(LibtorrentRasterbar_USE_STATIC_LIBS)
set(LibtorrentRasterbar_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
set(CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_STATIC_LIBRARY_SUFFIX})
endif()
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if(PC_LIBTORRENT_RASTERBAR_FOUND)
set(LibtorrentRasterbar_DEFINITIONS ${PC_LIBTORRENT_RASTERBAR_CFLAGS_OTHER})
else()
if(LibtorrentRasterbar_CUSTOM_DEFINITIONS)
set(LibtorrentRasterbar_DEFINITIONS ${LibtorrentRasterbar_CUSTOM_DEFINITIONS})
else()
# Without pkg-config, we can't possibly figure out the correct build flags.
# libtorrent is very picky about those. Let's take a set of defaults and
# hope that they apply. If not, you the user are on your own.
set(LibtorrentRasterbar_DEFINITIONS
-DTORRENT_USE_OPENSSL
-DTORRENT_DISABLE_GEO_IP
-DBOOST_ASIO_ENABLE_CANCELIO
-D_FILE_OFFSET_BITS=64)
endif()
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if(NOT LibtorrentRasterbar_USE_STATIC_LIBS)
list(APPEND LibtorrentRasterbar_DEFINITIONS
-DTORRENT_LINKING_SHARED
-DBOOST_SYSTEM_DYN_LINK)
endif()
endif()
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if (NOT ${CMAKE_FIND_PACKAGE_NAME}_FIND_QUIETLY)
message(STATUS "libtorrent definitions: ${LibtorrentRasterbar_DEFINITIONS}")
endif()
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find_path(LibtorrentRasterbar_INCLUDE_DIR libtorrent
HINTS ${PC_LIBTORRENT_RASTERBAR_INCLUDEDIR} ${PC_LIBTORRENT_RASTERBAR_INCLUDE_DIRS}
PATH_SUFFIXES libtorrent-rasterbar)
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find_library(LibtorrentRasterbar_LIBRARY NAMES torrent-rasterbar
HINTS ${PC_LIBTORRENT_RASTERBAR_LIBDIR} ${PC_LIBTORRENT_RASTERBAR_LIBRARY_DIRS})
if(LibtorrentRasterbar_USE_STATIC_LIBS)
set(CMAKE_FIND_LIBRARY_SUFFIXES ${LibtorrentRasterbar_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
set(LibtorrentRasterbar_LIBRARIES ${LibtorrentRasterbar_LIBRARY} ${CMAKE_THREAD_LIBS_INIT})
set(LibtorrentRasterbar_INCLUDE_DIRS ${LibtorrentRasterbar_INCLUDE_DIR})
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if(NOT Boost_SYSTEM_FOUND)
find_package(Boost QUIET REQUIRED COMPONENTS system)
set(LibtorrentRasterbar_LIBRARIES
${LibtorrentRasterbar_LIBRARIES} ${Boost_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
set(LibtorrentRasterbar_INCLUDE_DIRS
${LibtorrentRasterbar_INCLUDE_DIRS} ${Boost_INCLUDE_DIRS})
endif()
list(FIND LibtorrentRasterbar_DEFINITIONS -DTORRENT_USE_OPENSSL LibtorrentRasterbar_ENCRYPTION_INDEX)
if(LibtorrentRasterbar_ENCRYPTION_INDEX GREATER -1)
find_package(OpenSSL QUIET REQUIRED)
set(LibtorrentRasterbar_LIBRARIES ${LibtorrentRasterbar_LIBRARIES} ${OPENSSL_LIBRARIES})
set(LibtorrentRasterbar_INCLUDE_DIRS ${LibtorrentRasterbar_INCLUDE_DIRS} ${OPENSSL_INCLUDE_DIR})
set(LibtorrentRasterbar_OPENSSL_ENABLED ON)
endif()
include(FindPackageHandleStandardArgs)
# handle the QUIETLY and REQUIRED arguments and set LibtorrentRasterbar_FOUND to TRUE
# if all listed variables are TRUE
find_package_handle_standard_args(LibtorrentRasterbar DEFAULT_MSG
LibtorrentRasterbar_LIBRARY
LibtorrentRasterbar_INCLUDE_DIR
Boost_SYSTEM_FOUND
)
mark_as_advanced(LibtorrentRasterbar_INCLUDE_DIR LibtorrentRasterbar_LIBRARY
LibtorrentRasterbar_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES
LibtorrentRasterbar_ENCRYPTION_INDEX)
if (LibtorrentRasterbar_FOUND AND NOT TARGET LibtorrentRasterbar::torrent-rasterbar)
add_library(LibtorrentRasterbar::torrent-rasterbar SHARED IMPORTED)
# LibtorrentRasterbar_DEFINITIONS var contains a mix of -D, -f, and possible -std options
# let's split them into definitions and options (that are not definitions)
set(LibtorrentRasterbar_defines "${LibtorrentRasterbar_DEFINITIONS}")
set(LibtorrentRasterbar_options "${LibtorrentRasterbar_DEFINITIONS}")
list(FILTER LibtorrentRasterbar_defines INCLUDE REGEX "(^|;)-D.+")
list(FILTER LibtorrentRasterbar_options EXCLUDE REGEX "(^|;)-D.+")
# remove '-D' from LibtorrentRasterbar_defines
string(REGEX REPLACE "(^|;)(-D)" "\\1" LibtorrentRasterbar_defines "${LibtorrentRasterbar_defines}")
set_target_properties(LibtorrentRasterbar::torrent-rasterbar PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
IMPORTED_LOCATION "${LibtorrentRasterbar_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${LibtorrentRasterbar_INCLUDE_DIRS}"
INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "${LibtorrentRasterbar_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${LibtorrentRasterbar_LIBRARIES}"
INTERFACE_COMPILE_DEFINITIONS "${LibtorrentRasterbar_defines}"
INTERFACE_COMPILE_OPTIONS "${LibtorrentRasterbar_options}"
)
endif()
endif()