File Update-websocketpp-configVersion.cmake.patch of Package websocketpp

From bdc3895f330f10bfbef1079417c023d4f4157673 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wolfgang=20St=C3=B6ggl?= <c72578@yahoo.de>
Date: Fri, 1 May 2020 14:39:31 +0200
Subject: [PATCH] Update websocketpp-configVersion.cmake

- Disable check for same 32/64bit-ness. Use the ARCH_INDEPENDENT option
  for CMake 3.14 and newer.
- Use AnyNewerVersion instead of ExactVersion in order to increase
  compatibility. Otherwise cmake find_package will fail, if the version
  is not exactly the same.
---
 CMakeLists.txt | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index bff3654e..198ffd93 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -272,9 +272,20 @@ configure_package_config_file(websocketpp-config.cmake.in
   INSTALL_DESTINATION "${INSTALL_CMAKE_DIR}"
   NO_CHECK_REQUIRED_COMPONENTS_MACRO
 )
-write_basic_package_version_file("${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/websocketpp-configVersion.cmake"
-  VERSION ${WEBSOCKETPP_VERSION}
-  COMPATIBILITY ExactVersion)
+if (${CMAKE_VERSION} VERSION_LESS "3.14.0")
+    # Disable check for same 32/64bit-ness in websocketpp-configVersion.cmake by setting CMAKE_SIZEOF_VOID_P
+    set (CMAKE_SIZEOF_VOID_P "")
+    write_basic_package_version_file("${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/websocketpp-configVersion.cmake"
+      VERSION ${WEBSOCKETPP_VERSION}
+      COMPATIBILITY AnyNewerVersion)
+else ()
+    # Use ARCH_INDEPENDENT option introduced in CMake 3.14
+    # ARCH_INDEPENDENT is intended for header-only libraries or similar packages with no binaries
+    write_basic_package_version_file("${PROJECT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/websocketpp-configVersion.cmake"
+      VERSION ${WEBSOCKETPP_VERSION}
+      COMPATIBILITY AnyNewerVersion
+      ARCH_INDEPENDENT)
+endif ()
 
 # Install the websocketpp-config.cmake and websocketpp-configVersion.cmake
 install (FILES