$NetBSD: patch-CMakeLists.txt,v 1.8 2019/12/16 08:24:39 adam Exp $

Do not build third party libraries on Darwin.

--- CMakeLists.txt.orig	2019-10-09 11:42:29.000000000 +0000
+++ CMakeLists.txt
@@ -201,13 +201,13 @@ OCV_OPTION(OPENCV_ENABLE_NONFREE "Enable
 
 # 3rd party libs
 OCV_OPTION(OPENCV_FORCE_3RDPARTY_BUILD   "Force using 3rdparty code from source" OFF)
-OCV_OPTION(BUILD_ZLIB               "Build zlib from source"             (WIN32 OR APPLE OR OPENCV_FORCE_3RDPARTY_BUILD) )
-OCV_OPTION(BUILD_TIFF               "Build libtiff from source"          (WIN32 OR ANDROID OR APPLE OR OPENCV_FORCE_3RDPARTY_BUILD) )
-OCV_OPTION(BUILD_JASPER             "Build libjasper from source"        (WIN32 OR ANDROID OR APPLE OR OPENCV_FORCE_3RDPARTY_BUILD) )
-OCV_OPTION(BUILD_JPEG               "Build libjpeg from source"          (WIN32 OR ANDROID OR APPLE OR OPENCV_FORCE_3RDPARTY_BUILD) )
-OCV_OPTION(BUILD_PNG                "Build libpng from source"           (WIN32 OR ANDROID OR APPLE OR OPENCV_FORCE_3RDPARTY_BUILD) )
-OCV_OPTION(BUILD_OPENEXR            "Build openexr from source"          (((WIN32 OR ANDROID OR APPLE) AND NOT WINRT) OR OPENCV_FORCE_3RDPARTY_BUILD) )
-OCV_OPTION(BUILD_WEBP               "Build WebP from source"             (((WIN32 OR ANDROID OR APPLE) AND NOT WINRT) OR OPENCV_FORCE_3RDPARTY_BUILD) )
+OCV_OPTION(BUILD_ZLIB               "Build zlib from source"             (WIN32 OR OPENCV_FORCE_3RDPARTY_BUILD) )
+OCV_OPTION(BUILD_TIFF               "Build libtiff from source"          (WIN32 OR ANDROID OR OPENCV_FORCE_3RDPARTY_BUILD) )
+OCV_OPTION(BUILD_JASPER             "Build libjasper from source"        (WIN32 OR ANDROID OR OPENCV_FORCE_3RDPARTY_BUILD) )
+OCV_OPTION(BUILD_JPEG               "Build libjpeg from source"          (WIN32 OR ANDROID OR OPENCV_FORCE_3RDPARTY_BUILD) )
+OCV_OPTION(BUILD_PNG                "Build libpng from source"           (WIN32 OR ANDROID OR OPENCV_FORCE_3RDPARTY_BUILD) )
+OCV_OPTION(BUILD_OPENEXR            "Build openexr from source"          (((WIN32 OR ANDROID) AND NOT WINRT) OR OPENCV_FORCE_3RDPARTY_BUILD) )
+OCV_OPTION(BUILD_WEBP               "Build WebP from source"             (((WIN32 OR ANDROID) AND NOT WINRT) OR OPENCV_FORCE_3RDPARTY_BUILD) )
 OCV_OPTION(BUILD_TBB                "Download and build TBB from source" (ANDROID OR OPENCV_FORCE_3RDPARTY_BUILD) )
 OCV_OPTION(BUILD_IPP_IW             "Build IPP IW from source"           (NOT MINGW OR OPENCV_FORCE_3RDPARTY_BUILD) IF (X86_64 OR X86) AND NOT WINRT )
 OCV_OPTION(BUILD_ITT                "Build Intel ITT from source"
