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nodelet: error: nullptr was not declared in this scope

asked 2018-05-24 08:52:03 -0600

bear234 gravatar image

I'm trying to install the ros base from source following this link, everyting works fine.

Then I download the package nodelet and all of its dependencies packages. However, when I compile all of packages with catkin_make, I get an error:

[ 75%] Building CXX object CMakeFiles/nodeletlib.dir/src/loader.cpp.o
In file included from /root/system-full/tmp/install_isolated/include/class_loader/class_loader.hpp:46:0,
                 from /root/system-full/tmp/install_isolated/include/class_loader/multi_library_class_loader.hpp:42,
                 from /root/system-full/tmp/install_isolated/include/pluginlib/class_loader.hpp:38,
                 from /root/system-full/tmp/src/nodelet_core/nodelet/src/loader.cpp:34:
/root/system-full/tmp/install_isolated/include/class_loader/class_loader_core.hpp: In function ‘void class_loader::impl::registerPlugin(const string&, const string&)’:
/root/system-full/tmp/install_isolated/include/class_loader/class_loader_core.hpp:183:7: error: ‘nullptr’ was not declared in this scope
   if (nullptr == getCurrentlyActiveClassLoader()) {

I can compile the package class_loader without any error but when I try to compile the package nodelet, I will get the error above.

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answered 2018-05-24 10:30:20 -0600

gvdhoorn gravatar image

Kinetic is "only" compatible with platforms with compilers supporting C++11 (see REP-3). nullptr was added in C++11.

The fact that you see that error implies that whatever platform your compiling on / for does not have C++11 support (or doesn't have it enabled).

You'll have to either enable C++11 support in your compiler, or if that is not possible change to a compiler that does support it.

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gcc -v shows me the version of gcc is 5.4. I think it does support c++11

bear234 gravatar image bear234  ( 2018-05-24 20:13:46 -0600 )edit

at lease, g++ -std=c++11 can compile c++11 code on my machine.

bear234 gravatar image bear234  ( 2018-05-24 20:18:52 -0600 )edit

I don't know why your particular platform doesn't have C++11 enabled by default. The kinetic-devel dev-job on the buildfarm doesn't show the same error and uses GCC5.4 as well: log.

gvdhoorn gravatar image gvdhoorn  ( 2018-05-25 02:30:11 -0600 )edit

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Asked: 2018-05-24 08:52:03 -0600

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Last updated: May 24 '18