From b414cddcb5b76b211098a39edc7017618853f8b1 Mon Sep 17 00:00:00 2001
From: raiqarasool <rasoolraiqa@gmail.com>
Date: Fri, 12 Sep 2025 14:19:16 -0400
Subject: [PATCH] Add export and install of CMake targets for proper
 find_package support

---
 CMakeLists.txt            | 27 +++++++++++++++++++++++++--
 cmake/evioConfig.cmake.in |  6 +++---
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c2aa58b5e..9127732f1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -139,7 +139,8 @@ if(NOT C_ONLY)
             /usr/local/include
             ${Boost_INCLUDE_DIRS}
             ${LZ4_INCLUDE_DIRS}
-            ${DISRUPTOR_INCLUDE_DIR}
+            $<BUILD_INTERFACE:${DISRUPTOR_INCLUDE_DIR}>
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/Disruptor>
     )
 
     # Add the C++ tests/examples
@@ -232,6 +233,7 @@ endif()
 
 # Basic C library installation - minimal approach
 install(TARGETS evio
+        EXPORT evioTargets
         LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
         ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
         RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -243,7 +245,8 @@ install(FILES ${C_HEADER_FILES}
 
 # C++ components if enabled
 if(NOT C_ONLY)
-    install(TARGETS eviocc
+    install(TARGETS eviocc ${DISRUPTOR_LIBRARY}
+            EXPORT evioTargets
             LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
             ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
             RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
@@ -254,6 +257,26 @@ if(NOT C_ONLY)
     )
 endif()
 
+# Export targets and install config for find_package()
+install(EXPORT evioTargets
+        FILE evioTargets.cmake
+        NAMESPACE evio::
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/evio
+)
+
+include(CMakePackageConfigHelpers)
+
+configure_package_config_file(
+    ${CMAKE_SOURCE_DIR}/cmake/evioConfig.cmake.in
+    ${CMAKE_BINARY_DIR}/evioConfig.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/evio
+)
+
+install(FILES
+    ${CMAKE_BINARY_DIR}/evioConfig.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/evio
+)
+
 # Unit testing setup
 add_test(NAME EvioWriteAndReadBack_builder COMMAND bin/EvioWriteAndReadBack_builder 10)
 
diff --git a/cmake/evioConfig.cmake.in b/cmake/evioConfig.cmake.in
index 27930e821..a608d512c 100644
--- a/cmake/evioConfig.cmake.in
+++ b/cmake/evioConfig.cmake.in
@@ -25,9 +25,9 @@ if(NOT DEFINED C_ONLY)
             message(WARNING "You may need to set DISRUPTOR_CPP_HOME environment variable.")
         endif()
     else()
-        # If evio was built with FetchContent, we make no assumptions
-        message(STATUS "evio was built with integrated Disruptor. You need to provide Disruptor separately.")
-    endif()
+      # Disruptor is built and exported together with evio
+        message(STATUS "evio includes Disruptor internally; you do not need to provide it separately.")
+   endif()
 endif()
 
 # Include the targets file