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Improve setting minimal compiler standard (C++11)

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... so the user can override all settings.

This may need more tweaks in the future.
This commit is contained in:
Albrecht Schlosser
2025-03-07 15:17:56 +01:00
parent daf20b86af
commit 42a04c064d
1 changed files with 22 additions and 2 deletions
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24
CMakeLists.txt
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@@ -35,8 +35,28 @@ cmake_minimum_required(VERSION 3.15.0 FATAL_ERROR)
project(FLTK VERSION 1.5.0) project(FLTK VERSION 1.5.0)
set(CMAKE_CXX_STANDARD 11) #######################################################################
set(CMAKE_CXX_STANDARD_REQUIRED TRUE) # set the required C++ standard -- may be overridden by the user
#######################################################################
# Note 1: We don't check if the user sets a standard older than C++11,
# but if they do, the build will fail.
# Note 2: For optimal portability we disable compiler specific
# extensions, but this can also be overridden by the user.
# Note 3: This code is experimental and intentionally undocumented.
# It may be removed or changed w/o notice.
if(NOT DEFINED CMAKE_CXX_STANDARD)
set(CMAKE_CXX_STANDARD 11)
endif()
if(NOT DEFINED CMAKE_CXX_STANDARD_REQUIRED)
set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
endif()
if(NOT DEFINED CMAKE_CXX_EXTENSIONS)
set(CMAKE_CXX_EXTENSIONS OFF)
endif()
####################################################################### #######################################################################
# include macro and function definitions for general usage # include macro and function definitions for general usage