[libtorrent] Fix linkage issues for dynamic builds (#7345)

* [libtorrent] Fix linkage issues for dynamic builds

* [libtorrent] Also handle static linkage

Co-authored-by: Jack·Boos·Yu <47264268+JackBoosY@users.noreply.github.com>

ports/libtorrent/CONTROL

@@ -1,5 +1,5 @@
 Source: libtorrent
-Version: 1.2.2
+Version: 1.2.2-1
 Homepage: https://github.com/arvidn/libtorrent
 Description: An efficient feature complete C++ BitTorrent implementation 
 Build-Depends: openssl, boost-system, boost-date-time, boost-chrono, boost-random, boost-asio, boost-crc, boost-config, boost-iterator, boost-scope-exit, boost-multiprecision

ports/libtorrent/portfile.cmake

@@ -10,24 +10,23 @@ vcpkg_from_github(
         add-datetime-to-boost-libs.patch
 )
 
-string(COMPARE EQUAL "${VCPKG_LIBRARY_LINKAGE}" "dynamic" LIBTORRENT_SHARED)
-
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     PREFER_NINJA # Disable this option if project cannot be built with Ninja
     OPTIONS
-        -Dshared=${LIBTORRENT_SHARED}
         -Ddeprecated-functions=off
 )
 
 vcpkg_install_cmake()
 
+file(READ ${CURRENT_PACKAGES_DIR}/include/libtorrent/aux_/export.hpp EXPORT_H)
+string(REPLACE "defined TORRENT_BUILDING_SHARED" "0" EXPORT_H "${EXPORT_H}")
 if (VCPKG_LIBRARY_LINKAGE STREQUAL "dynamic")
-    # Defines for shared lib
-    file(READ ${CURRENT_PACKAGES_DIR}/include/libtorrent/aux_/export.hpp EXPORT_H)
-    string(REPLACE "defined TORRENT_BUILDING_SHARED" "1" EXPORT_H "${EXPORT_H}")
-    file(WRITE ${CURRENT_PACKAGES_DIR}/include/libtorrent/aux_/export.hpp "${EXPORT_H}")
+    string(REPLACE "defined TORRENT_LINKING_SHARED" "1" EXPORT_H "${EXPORT_H}")
+else()
+    string(REPLACE "defined TORRENT_LINKING_SHARED" "0" EXPORT_H "${EXPORT_H}")
 endif()
+file(WRITE ${CURRENT_PACKAGES_DIR}/include/libtorrent/aux_/export.hpp "${EXPORT_H}")
 
 vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/LibtorrentRasterbar TARGET_PATH share/libtorrentrasterbar)