From fb8dbe8f0c1d724a289e439474c640dff4c35b8b Mon Sep 17 00:00:00 2001
From: Joshua Goins <josh@redstrate.com>
Date: Tue, 16 Oct 2018 09:18:42 -0400
Subject: [PATCH] Add assimp cmake module

---
 CMakeLists.txt         |  5 ++-
 cmake/Findassimp.cmake | 83 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+), 2 deletions(-)
 create mode 100644 cmake/Findassimp.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 100731e..e9b51b8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,7 @@ set(CMAKE_CXX_STANDARD 14)
 
 find_package(SDL2 REQUIRED)
 find_package(Vulkan REQUIRED)
+find_package(assimp REQUIRED)
 
 if(CMAKE_BUILD_TYPE STREQUAL "Debug")
 	add_definitions(-DDEBUG)
@@ -16,8 +17,8 @@ add_executable(Graph
     src/main.cpp
     src/renderer.cpp
     src/worldpass.cpp)
-target_link_libraries(Graph PUBLIC SDL2::SDL2 SDL2::SDL2main ${Vulkan_LIBRARY} assimp)
-target_include_directories(Graph PUBLIC include ${Vulkan_INCLUDE_DIRS})
+target_link_libraries(Graph PUBLIC SDL2::SDL2 SDL2::SDL2main ${Vulkan_LIBRARY} ${assimp_LIBRARIES})
+target_include_directories(Graph PUBLIC include ${Vulkan_INCLUDE_DIRS} ${assimp_INCLUDE_DIRS})
 
 macro(compile_shader src)
     add_custom_command(
diff --git a/cmake/Findassimp.cmake b/cmake/Findassimp.cmake
new file mode 100644
index 0000000..6d464e3
--- /dev/null
+++ b/cmake/Findassimp.cmake
@@ -0,0 +1,83 @@
+if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+	set(ASSIMP_ARCHITECTURE "64")
+elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
+	set(ASSIMP_ARCHITECTURE "32")
+endif(CMAKE_SIZEOF_VOID_P EQUAL 8)
+	
+if(WIN32)
+	set(ASSIMP_ROOT_DIR CACHE PATH "ASSIMP root directory")
+
+	# Find path of each library
+	find_path(ASSIMP_INCLUDE_DIR
+		NAMES
+			assimp/anim.h
+		HINTS
+			${ASSIMP_ROOT_DIR}/include
+	)
+
+	if(MSVC12)
+		set(ASSIMP_MSVC_VERSION "vc120")
+	elseif(MSVC14)	
+		set(ASSIMP_MSVC_VERSION "vc140")
+	endif(MSVC12)
+	
+	if(MSVC12 OR MSVC14)
+	
+		find_path(ASSIMP_LIBRARY_DIR
+			NAMES
+				assimp-${ASSIMP_MSVC_VERSION}-mt.lib
+			HINTS
+				${ASSIMP_ROOT_DIR}/lib${ASSIMP_ARCHITECTURE}
+		)
+		
+		find_library(ASSIMP_LIBRARY_RELEASE				assimp-${ASSIMP_MSVC_VERSION}-mt.lib 			PATHS ${ASSIMP_LIBRARY_DIR})
+		find_library(ASSIMP_LIBRARY_DEBUG				assimp-${ASSIMP_MSVC_VERSION}-mtd.lib			PATHS ${ASSIMP_LIBRARY_DIR})
+		
+		set(ASSIMP_LIBRARY 
+			optimized 	${ASSIMP_LIBRARY_RELEASE}
+			debug		${ASSIMP_LIBRARY_DEBUG}
+		)
+		
+		set(ASSIMP_LIBRARIES "ASSIMP_LIBRARY_RELEASE" "ASSIMP_LIBRARY_DEBUG")
+	
+		FUNCTION(ASSIMP_COPY_BINARIES TargetDirectory)
+			ADD_CUSTOM_TARGET(AssimpCopyBinaries
+				COMMAND ${CMAKE_COMMAND} -E copy ${ASSIMP_ROOT_DIR}/bin${ASSIMP_ARCHITECTURE}/assimp-${ASSIMP_MSVC_VERSION}-mtd.dll 	${TargetDirectory}/Debug/assimp-${ASSIMP_MSVC_VERSION}-mtd.dll
+				COMMAND ${CMAKE_COMMAND} -E copy ${ASSIMP_ROOT_DIR}/bin${ASSIMP_ARCHITECTURE}/assimp-${ASSIMP_MSVC_VERSION}-mt.dll 		${TargetDirectory}/Release/assimp-${ASSIMP_MSVC_VERSION}-mt.dll
+			COMMENT "Copying Assimp binaries to '${TargetDirectory}'"
+			VERBATIM)
+		ENDFUNCTION(ASSIMP_COPY_BINARIES)
+	
+	endif()
+	
+else(WIN32)
+
+	find_path(
+	  assimp_INCLUDE_DIRS
+	  NAMES postprocess.h scene.h version.h config.h cimport.h
+	  PATHS /usr/include/assimp
+	)
+
+	find_library(
+	  assimp_LIBRARIES
+	  NAMES 
+	  assimp
+	  PATHS 
+	  /usr/lib
+	)
+
+	if (assimp_INCLUDE_DIRS AND assimp_LIBRARIES)
+	  SET(assimp_FOUND TRUE)
+	ENDIF (assimp_INCLUDE_DIRS AND assimp_LIBRARIES)
+
+	if (assimp_FOUND)
+	  if (NOT assimp_FIND_QUIETLY)
+		message(STATUS "Found asset importer library: ${assimp_LIBRARIES}")
+	  endif (NOT assimp_FIND_QUIETLY)
+	else (assimp_FOUND)
+	  if (assimp_FIND_REQUIRED)
+		message(FATAL_ERROR "Could not find asset importer library")
+	  endif (assimp_FIND_REQUIRED)
+	endif (assimp_FOUND)
+	
+endif(WIN32)