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Setting C++ standard [message #1836830]

Fri, 15 January 2021 03:51

Igor Korot

Messages: 4
Registered: January 2021

Junior Member

Hi, ALL,

In the new Eclipse (2020-12), what is the proper way to set the "-std=c++11" option so that the parser properly picks up the headers?

Thank you.

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Re: Setting C++ standard [message #1836857 is a reply to message #1836830]

Fri, 15 January 2021 17:47

David Vavra

Messages: 1426
Registered: October 2012

Senior Member

You need to add -std=c++11 to the compiler built-ins provider command in
Project --> Properties --> C/C++ General --> Preprocessor Include Paths, Macros etc. --> Providers tab

The newer g++ compilers automatically comply with C++14 and higher
so, unless you want to restrict things to C++11, you don't need to do anything.

You can check it by executing with a terminal:
gcc -x c++ -E -P -v -dD /dev/null | grep cplusplus

c++11 value is 201103

if the value is greater than that you should be OK.

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Re: Setting C++ standard [message #1836858 is a reply to message #1836857]

Fri, 15 January 2021 18:18

Igor Korot

Messages: 4
Registered: January 2021

Junior Member

Hi,
Where exactly and how should I add it?

Thank you.

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Re: Setting C++ standard [message #1836860 is a reply to message #1836858]

Fri, 15 January 2021 18:27

David Vavra

Messages: 1426
Registered: October 2012

Senior Member

Project --> Properties --> C/C++ General --> Preprocessor Include Paths, Macros etc. --> Providers tab --> CDT GCC Built-in Compiler Settings
Change the command in the edit box labelled "Command to get compiler specs:"
e.g,
change ${COMMAND} ${FLAGS} -E -P -v -dD "${INPUTS}"
to ${COMMAND} ${FLAGS} -std=c++11 -E -P -v -dD "${INPUTS}"

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