From 8d71ca3b44bed784471379746d67c4db90d012df Mon Sep 17 00:00:00 2001
From: DownerCase <119755054+DownerCase@users.noreply.github.com>
Date: Mon, 22 Jan 2024 14:12:14 +0000
Subject: [PATCH] [CMake] yaml-cpp compatibility with CMake < 3.18 (#1323)

---
 CMakeLists.txt                 | 2 +-
 app/meas_cutter/CMakeLists.txt | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index af447a1a42..5cf0c7d0b2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@
 #
 # ========================= eCAL LICENSE =================================
 
-cmake_minimum_required(VERSION 3.13)
+cmake_minimum_required(VERSION 3.15)
 
 include(CMakeDependentOption)
 
diff --git a/app/meas_cutter/CMakeLists.txt b/app/meas_cutter/CMakeLists.txt
index fdac3f7c05..4209e6c380 100644
--- a/app/meas_cutter/CMakeLists.txt
+++ b/app/meas_cutter/CMakeLists.txt
@@ -24,7 +24,9 @@ find_package(yaml-cpp REQUIRED)
 
 #compatibility with yaml-cpp < 0.8.0
 if (NOT TARGET yaml-cpp::yaml-cpp AND TARGET yaml-cpp)
-  add_library(yaml-cpp::yaml-cpp ALIAS yaml-cpp)
+  # ALIASing a imported non-global library requires CMake 3.18 so we do this
+  add_library(yaml-cpp::yaml-cpp INTERFACE IMPORTED)
+  target_link_libraries(yaml-cpp::yaml-cpp INTERFACE yaml-cpp)
 endif()