From: idz <idz@iosdeveloperzone.com>
Date: Sun, 13 Jul 2025 08:04:07 +0000 (-0700)
Subject: Configuration - Update C++ standard to C++17
X-Git-Tag: V7_9_2~4
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=cdfc6148c5e7cbaeeb3ac04e933864edadb1ada0;p=occt.git

Configuration - Update C++ standard to C++17
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6f0654484f..8bb3587a07 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -65,22 +65,19 @@ set (CMAKE_SUPPRESS_REGENERATION TRUE)
 set (CMAKE_CONFIGURATION_TYPES Release Debug RelWithDebInfo CACHE INTERNAL "" FORCE)
 
 # set using C++ standard
-set (BUILD_CPP_STANDARD "C++11" CACHE STRING "Select using c++ standard.")
-set_property(CACHE BUILD_CPP_STANDARD PROPERTY STRINGS "C++11" "C++14" "C++17" "C++20" "C++23")
+set (BUILD_CPP_STANDARD "C++17" CACHE STRING "Select using c++ standard.")
+set_property(CACHE BUILD_CPP_STANDARD PROPERTY STRINGS "C++17" "C++20" "C++23")
 
 # Set desired C++ standard
-if     ("${BUILD_CPP_STANDARD}" STREQUAL "C++11")
-  set (CMAKE_CXX_STANDARD 11)
-elseif ("${BUILD_CPP_STANDARD}" STREQUAL "C++14")
-  set (CMAKE_CXX_STANDARD 14)
-elseif ("${BUILD_CPP_STANDARD}" STREQUAL "C++17")
+if ("${BUILD_CPP_STANDARD}" STREQUAL "C++17")
   set (CMAKE_CXX_STANDARD 17)
 elseif ("${BUILD_CPP_STANDARD}" STREQUAL "C++20")
   set (CMAKE_CXX_STANDARD 20)
 elseif ("${BUILD_CPP_STANDARD}" STREQUAL "C++23")
   set (CMAKE_CXX_STANDARD 23)
 else ()
-  message (FATAL_ERROR, "misprint in c++ standard name")
+  set (CMAKE_CXX_STANDARD 17)
+  message (WARNING "misprint in c++ standard name, C++17 is used")
 endif()
 set (CMAKE_CXX_STANDARD_REQUIRED ON)