From 23f680ef4a693862271d5adf777e6edb2c8057f5 Mon Sep 17 00:00:00 2001
From: "Michael X. Grey" <grey@openrobotics.org>
Date: Fri, 16 Nov 2018 12:16:31 +0800
Subject: [PATCH] Export OpenThreads target for win32

---
 src/OpenThreads/win32/CMakeLists.txt | 50 ++++++++++++++++++++++++----
 1 file changed, 44 insertions(+), 6 deletions(-)

diff --git a/src/OpenThreads/win32/CMakeLists.txt b/src/OpenThreads/win32/CMakeLists.txt
index 84550bd7a..82574ebf4 100644
--- a/src/OpenThreads/win32/CMakeLists.txt
+++ b/src/OpenThreads/win32/CMakeLists.txt
@@ -43,12 +43,50 @@ IF(MSVC AND OSG_MSVC_VERSIONED_DLL)
     HANDLE_MSVC_DLL(ot ${OPENTHREADS_SOVERSION})
 ENDIF()
 
-INSTALL(
-    TARGETS OpenThreads
-    ARCHIVE DESTINATION lib COMPONENT libopenthreads-dev
-    LIBRARY DESTINATION lib COMPONENT libopenthreads
-    RUNTIME DESTINATION bin COMPONENT libopenthreads
-)
+IF(OSG_EXPORT_TARGETS)
+
+    INSTALL(
+        TARGETS OpenThreads
+        EXPORT  OpenThreads
+        ARCHIVE DESTINATION lib COMPONENT libopenthreads-dev
+        LIBRARY DESTINATION lib COMPONENT libopenthreads
+        RUNTIME DESTINATION bin COMPONENT libopenthreads
+    )
+
+    INSTALL(
+        EXPORT OpenThreads
+        NAMESPACE ${PKG_NAMESPACE}::
+        DESTINATION ${INSTALL_CONFIGDIR}
+        FILE OpenThreads-targets.cmake
+        COMPONENT libopenthreads-dev
+    )
+
+    # Intentionally blank
+    SET(COMPONENT_CMAKE_DEPENDENCIES)
+
+    SET(TARGET_IMPORT_INPUT_FILE  "${PROJECT_SOURCE_DIR}/packaging/cmake/openscenegraph-component-import-targets.cmake")
+    SET(TARGET_IMPORT_OUTPUT_FILE "${PROJECT_BINARY_DIR}/packaging/cmake/openscenegraph-OpenThreads-import-targets.cmake")
+    CONFIGURE_FILE(
+        ${TARGET_IMPORT_INPUT_FILE}
+        ${TARGET_IMPORT_OUTPUT_FILE}
+        @ONLY
+    )
+    INSTALL(
+        FILES ${TARGET_IMPORT_OUTPUT_FILE}
+        DESTINATION ${INSTALL_CONFIGDIR}
+        COMPONENT libopenscenegraph-dev
+    )
+
+ELSE()
+
+    INSTALL(
+        TARGETS OpenThreads
+        ARCHIVE DESTINATION lib COMPONENT libopenthreads-dev
+        LIBRARY DESTINATION lib COMPONENT libopenthreads
+        RUNTIME DESTINATION bin COMPONENT libopenthreads
+    )
+
+ENDIF()
 INSTALL(
     FILES ${OpenThreads_PUBLIC_HEADERS}
     DESTINATION include/OpenThreads