0004-Turn-multi-configuration-off.patch

From Pierre Moreau <pierre.moreau@cs.lth.se>
Date: Fri, 21 Aug 2020 21:21:21 +0200
Subject: [Patch] Turn multi-configuration off

If multi-configuration is detected, assimp will install both Debug and Release
target configurations (which is fine in itself).
However when using `find_package()` on assimp, it loops over all installed
target configurations and ensure that everything is there which will not work
as we only built and installed the Release version so CMake ends up failing due
to trying to locate the referenced libraries from the Debug version.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ab1a8d2c..afef9cbd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -347,7 +347,7 @@ if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.5)
 SET( ASSIMP_BIN_INSTALL_DIR "bin" CACHE STRING
   "Path the tool executables are installed to." )
 
-get_cmake_property(is_multi_config GENERATOR_IS_MULTI_CONFIG)
+set(is_multi_config OFF)
 
 IF (INJECT_DEBUG_POSTFIX AND (is_multi_config OR CMAKE_BUILD_TYPE STREQUAL "Debug"))
   SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "Debug Postfix for lib, samples and tools")