upgrade gtest to 1.15 and fixed macos build issue

CMakeLists.txt

@@ -21,14 +21,15 @@ set(AGENT_PREFIX "" CACHE STRING "Prefix for the name of the agent and the agent
 set(CMAKE_INSTALL_DATADIR "${CMAKE_INSTALL_DATADIR}/mtconnect")
 
 message(INFO " Shared build: ${SHARED_AGENT_LIB}")
+set(CMAKE_OSX_DEPLOYMENT_TARGET 13.2)
 
 project(cppagent LANGUAGES C CXX)
 
 # We will define these properties by default for each CMake target to be created.
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
-set(CXX_COMPILE_FEATURES cxx_std_17)
+set(CXX_COMPILE_FEATURES cxx_std_20)
 
 set(WITH_RUBY ON CACHE STRING "With Ruby Support")
 

conan/profiles/macos

@@ -3,6 +3,7 @@ include(default)
 [settings]
 compiler=apple-clang
 compiler.cppstd=20
+os.version=14.0
 
 [system_tools]
 cmake/>3.26.0

conan/profiles/xcode

@@ -2,6 +2,7 @@ include(default)
 
 [settings]
 compiler.cppstd=20
+os.version=14.0
 
 [system_tools]
 cmake/>3.23.0

conanfile.py

@@ -130,7 +130,7 @@ def requirements(self):
         if self.options.with_ruby:
             self.requires("mruby/3.2.0", headers=True, libs=True, transitive_headers=True, transitive_libs=True)
 
-        self.requires("gtest/1.10.0", headers=True, libs=True, transitive_headers=True, transitive_libs=True, test=True)
+        self.requires("gtest/1.15.0", headers=True, libs=True, transitive_headers=True, transitive_libs=True, test=True)
 
     def configure(self):
         if self.options.shared: