From 5fab18c9c86d7ae275fdeeb2d895c6894a88f330 Mon Sep 17 00:00:00 2001
From: Kimball Thurston <kdt3rd@gmail.com>
Date: Sat, 13 Jul 2019 12:40:55 +1200
Subject: [PATCH] Generate version file to ensure proper version check

Signed-off-by: Kimball Thurston <kdt3rd@gmail.com>
---
 IlmBase/config/CMakeLists.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/IlmBase/config/CMakeLists.txt b/IlmBase/config/CMakeLists.txt
index 5376c80d..0e596532 100644
--- a/IlmBase/config/CMakeLists.txt
+++ b/IlmBase/config/CMakeLists.txt
@@ -101,7 +101,17 @@ endif()
 # The main export of the configuration - This is the
 # moral equivalent of a pkg-config file for cmake
 # and replaces the Find*.cmake of the "old" cmake
+include(CMakePackageConfigHelpers)
+write_basic_package_version_file("${PROJECT_NAME}ConfigVersion.cmake"
+  VERSION ${ILMBASE_VERSION}
+  COMPATIBILITY SameMajorVersion
+)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
+  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
+)
 install(EXPORT ${PROJECT_NAME}
   DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
+  FILE ${PROJECT_NAME}Config.cmake
   NAMESPACE ${PROJECT_NAME}::
+  EXPORT_LINK_INTERFACE_LIBRARIES
 )