From 4fb5038fb194b7bf75a5985a2f88d0e2007d792b Mon Sep 17 00:00:00 2001
From: Mika Rautio <mrrautio@users.sourceforge.net>
Date: Mon, 20 Nov 2017 00:10:05 +0200
Subject: [PATCH] Add support for building Mac OS X Framework bundles

---
 CMakeLists.txt      |  9 +++++++++
 code/CMakeLists.txt | 25 +++++++++++++++++++++++--
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73a30e9d4..0fc9af467 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -42,6 +42,10 @@ OPTION( BUILD_SHARED_LIBS
   "Build package with shared libraries."
   ON
 )
+OPTION( BUILD_FRAMEWORK
+  "Build package as Mac OS X Framework bundle."
+  OFF
+)
 OPTION( ASSIMP_DOUBLE_PRECISION
   "Set to ON to enable double precision processing"
   OFF
@@ -111,6 +115,11 @@ IF(MSVC)
   )
 ENDIF(MSVC)
 
+IF (BUILD_FRAMEWORK)
+  SET (BUILD_SHARED_LIBS ON)
+  MESSAGE(STATUS "Framework bundle building enabled")
+ENDIF(BUILD_FRAMEWORK)
+
 IF(NOT BUILD_SHARED_LIBS)
   MESSAGE(STATUS "Shared libraries disabled")
   SET(LINK_SEARCH_START_STATIC TRUE)
diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 4890a3c9e..1e08bdb44 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -914,8 +914,27 @@ SET_TARGET_PROPERTIES( assimp PROPERTIES
 )
 
 if (APPLE)
-  SET_TARGET_PROPERTIES( assimp PROPERTIES INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/${ASSIMP_LIB_INSTALL_DIR}")
-endif()
+  SET_TARGET_PROPERTIES( assimp PROPERTIES
+    INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/${ASSIMP_LIB_INSTALL_DIR}"
+  )
+
+  if (BUILD_FRAMEWORK)
+    SET_TARGET_PROPERTIES( assimp PROPERTIES
+      FRAMEWORK TRUE
+      FRAMEWORK_VERSION C
+      MACOSX_FRAMEWORK_IDENTIFIER net.sf.assimp
+      PUBLIC_HEADER "${PUBLIC_HEADERS}"
+    )
+
+    # PUBLIC_HEADER option does not support directory structure creation
+    # add ./Compiler/*.h to assimp.framework via copy command
+    ADD_CUSTOM_COMMAND(TARGET assimp POST_BUILD 
+      COMMAND "${CMAKE_COMMAND}" -E copy_directory 
+         "../${HEADER_PATH}/Compiler"
+         assimp.framework/Headers/Compiler
+      COMMENT "Copying public ./Compiler/ header files to framework bundle's Headers/Compiler/")
+  endif(BUILD_FRAMEWORK)
+endif(APPLE)
 
 # Build against external unzip, or add ../contrib/unzip so
 # assimp can #include "unzip.h"
@@ -935,9 +954,11 @@ INSTALL( TARGETS assimp
   LIBRARY DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
   ARCHIVE DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
   RUNTIME DESTINATION ${ASSIMP_BIN_INSTALL_DIR}
+  FRAMEWORK DESTINATION ${ASSIMP_LIB_INSTALL_DIR}
   COMPONENT ${LIBASSIMP_COMPONENT})
 INSTALL( FILES ${PUBLIC_HEADERS} DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}/assimp COMPONENT assimp-dev)
 INSTALL( FILES ${COMPILER_HEADERS} DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}/assimp/Compiler COMPONENT assimp-dev)
+
 if (ASSIMP_ANDROID_JNIIOSYSTEM)
   INSTALL(FILES ${HEADER_PATH}/${ASSIMP_ANDROID_JNIIOSYSTEM_PATH}/AndroidJNIIOSystem.h
     DESTINATION ${ASSIMP_INCLUDE_INSTALL_DIR}