From d48c835f654acdeb61c155455bd76e7e29b54e9b Mon Sep 17 00:00:00 2001
From: Steven Siloti <ssiloti@gmail.com>
Date: Sat, 8 Jul 2017 14:11:22 -0700
Subject: [PATCH] add cmake package support

This enables libtorrent to be used with the find_package command for easy
integration with applications which use cmake.
---
 CMakeLists.txt                   | 42 +++++++++++++++++++++++++++++---
 libtorrent-rasterbarConfig.cmake |  1 +
 2 files changed, 39 insertions(+), 4 deletions(-)
 create mode 100644 libtorrent-rasterbarConfig.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0a7a351cb..336e790e2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -365,12 +365,46 @@ else()
 	set (LIBDIR "lib")
 endif()
 
-install(TARGETS torrent-rasterbar DESTINATION ${LIBDIR})
-install(DIRECTORY include/libtorrent
-	DESTINATION include
-	PATTERN ".svn" EXCLUDE)
+install(TARGETS torrent-rasterbar EXPORT torrent-rasterbarTargets
+	DESTINATION ${LIBDIR} INCLUDES DESTINATION include)
+install(DIRECTORY include/libtorrent DESTINATION include)
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libtorrent-rasterbar.pc DESTINATION ${LIBDIR}/pkgconfig)
 
+# === generate a CMake Config File ===
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file(
+	"${CMAKE_CURRENT_BINARY_DIR}/libtorrent-rasterbar/libtorrent-rasterbarConfigVersion.cmake"
+	VERSION ${VERSION}
+	COMPATIBILITY ExactVersion
+)
+
+export(EXPORT torrent-rasterbarTargets
+	FILE "${CMAKE_CURRENT_BINARY_DIR}/libtorrent-rasterbar/libtorrent-rasterbarTargets.cmake"
+	NAMESPACE Libtorrent::
+)
+
+configure_file(libtorrent-rasterbarConfig.cmake
+	"${CMAKE_CURRENT_BINARY_DIR}/libtorrent-rasterbar/libtorrent-rasterbarConfig.cmake"
+	COPYONLY
+)
+
+set(ConfigPackageLocation lib/cmake/libtorrent-rasterbar)
+install(EXPORT torrent-rasterbarTargets
+	FILE
+		libtorrent-rasterbarTargets.cmake
+	NAMESPACE
+		Libtorrent::
+	DESTINATION
+		${ConfigPackageLocation}
+)
+install(
+	FILES
+		libtorrent-rasterbarConfig.cmake
+		"${CMAKE_CURRENT_BINARY_DIR}/libtorrent-rasterbar/libtorrent-rasterbarConfigVersion.cmake"
+	DESTINATION
+		${ConfigPackageLocation}
+)
+
 # === set up examples directory as an independent project ===
 file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/examples)
 configure_file(examples/run_cmake.sh.in examples/run_cmake.sh)
diff --git a/libtorrent-rasterbarConfig.cmake b/libtorrent-rasterbarConfig.cmake
new file mode 100644
index 000000000..e4bdebff7
--- /dev/null
+++ b/libtorrent-rasterbarConfig.cmake
@@ -0,0 +1 @@
+include("${CMAKE_CURRENT_LIST_DIR}/libtorrent-rasterbarTargets.cmake")