[ITK] [ITK-users] C++11?
Bradley Lowekamp
blowekamp at mail.nih.gov
Mon Apr 14 11:31:55 EDT 2014
Hello,
Just to further elaborate, in the cmake configuration you need to add "-std=c++11", to CMAKE_CXX_FLAGS on the command line before the first configuration something like:
cmake -DCMAKE_CXX_FLAGS="-std=c++11" /your/source/ITK
Alternatively you can set the CXX_FLAGS environment variable similarly. Either way this should be done a new build directory with a clean configuration, not a reconfiguration.
Additionally, project that use this C++11 build of ITK should use the same flag.
Brad
On Apr 13, 2014, at 11:33 AM, Johnson, Hans J <hans-johnson at uiowa.edu> wrote:
> Jared,
>
> ADD_DEFINTIONS is not intended for compiler flags. You need to configure
> the build initializing with the C++ flags
>
> CXX=Œ/usr/bin/clang¹ CXX_FLAGS=³-std=c++11² ccmake ../ITK
>
> Hans
>
>
>
> On 4/12/14, 10:41 PM, "Becksfort, Jared" <Jared.Becksfort at STJUDE.ORG>
> wrote:
>
>> Hello,
>>
>> I was hoping to build the 4.5.2 with C++11. Are there instructions for
>> doing so? I tried adding
>>
>> ADD_DEFINITIONS(
>> -std=c++11
>> )
>>
>> to the CMakeLists.txt file, which felt like a hack and didn't work:
>>
>> Scanning dependencies of target itksys
>> [ 21%] Building C object
>> Modules/ThirdParty/KWSys/src/KWSys/CMakeFiles/itksys.dir/ProcessUNIX.c.o
>> error: invalid argument '-std=c++11' not allowed with 'C/ObjC'
>> make[2]: ***
>> [Modules/ThirdParty/KWSys/src/KWSys/CMakeFiles/itksys.dir/ProcessUNIX.c.o]
>> Error 1
>> make[1]: ***
>> [Modules/ThirdParty/KWSys/src/KWSys/CMakeFiles/itksys.dir/all] Error 2
>> make: *** [all] Error 2
>>
>> Thanks,
>> Jared
>>
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>
>
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