[CMake] C++11 flag not being added

[Petr Bena]

Can you elaborate on it a bit?

I put set(CMAKE_CXX_STANDARD 11) as first line of my CMakeLists and it
still doesn't work, without the hack I used I get errors while
compiling.

Can you give me example file in which it works? I guess there is more
needed for it to work.

On Tue, Oct 13, 2015 at 7:12 PM, Matthew S Wallace
<mwallace at ccmtrading.com> wrote:
> Thanks, setting the global variable solved my issue.
>
> -Matt
>
>> On Oct 13, 2015, at 10:46 AM, Johannes Zarl-Zierl <johannes.zarl-zierl at jku.at> wrote:
>>
>> Hi,
>>
>> CXX_STANDARD is a target property, not a global one. You can either set
>> CXX_STANDARD for every target that needs it, or set it globally by changing
>> the default value.
>>
>> You can do the latter by setting the variable CMAKE_CXX_STANDARD  before
>> defining any target that depends on it:
>>
>> set(CMAKE_CXX_STANDARD 11)
>>
>> HTH,
>>  Johannes
>>
>> On Tuesday 13 October 2015 10:22:36 Matthew S Wallace wrote:
>>> I have the following two lines in my CMakeLists.txt
>>>
>>> set_property(GLOBAL PROPERTY CXX_STANDARD 11)
>>> set_property(GLOBAL PROPERTY CXX_STANDARD_REQUIRED)
>>>
>>> However when compiling some of my source files, the -std=c++11 flag is not
>>> added.
>>>
>>> Just for good measure I added:
>>> target_compile_features(my_target PRIVATE cxx_strong_enums) to the target
>>> that was having the problem.
>>>
>>> Not sure if it matters, but in this case the compile error I’m getting is
>>> complaining because I’m referencing a fully scoped enum.  If I explicitly
>>> include -std=c++11 in my compile flags, everything works.
>>>
>>> I’m thinking I’m probably just misunderstanding how CXX_STANDARD works, but
>>> any help would be appreciated.
>>>
>>> -Matt
>>
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