From 4dc6ea4091aa5bda9c311a71c4985fc217d227ec Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sun, 5 Jan 2020 10:50:14 +0200
Subject: [PATCH] - set macOS deployment target in CMake

Removed explicit version selection from Travis configuration
Bug in particular version of CMake requires CMAKE_OSX_SYSROOT to be set to existing SDK name for Xcode 8
https://cmake.org/pipermail/cmake/2012-November/052649.html
---
 .travis.yml    | 4 ++--
 CMakeLists.txt | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index d1e3661d9..2e7e38bf8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,13 +14,13 @@ matrix:
       os: osx
       osx_image: xcode8
       env:
-        - CMAKE_OPTIONS="-DCMAKE_BUILD_TYPE=Debug -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9"
+        - CMAKE_OPTIONS="-DCMAKE_BUILD_TYPE=Debug -DCMAKE_OSX_SYSROOT=macosx10.12"
 
     - name: "Xcode 11.3"
       os: osx
       osx_image: xcode11.3
       env:
-        - CMAKE_OPTIONS="-DCMAKE_BUILD_TYPE=Release -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9"
+        - CMAKE_OPTIONS="-DCMAKE_BUILD_TYPE=Release"
 
     - name: "Visual Studio 2017 32-bit"
       os: windows
diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa74b5761..f30c37477 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -288,6 +288,7 @@ else()
 
 
 	if( APPLE )
+		set(CMAKE_OSX_DEPLOYMENT_TARGET "10.9")
 		if( CMAKE_CXX_COMPILER_ID STREQUAL "Clang" )
 			# With standard Apple tools -stdlib=libc++ needs to be specified in order to get
 			# C++11 support using SDKs 10.7 and 10.8.