Table of Contents
The set of features available in the GNU C++ library is shaped by several GCC Command Options. Options that impact libstdc++ are enumerated and detailed in the table below.
The standard library conforms to the dialect of C++ specified by the
-std option passed to the compiler.
By default, g++ is equivalent to
g++ -std=gnu++14 since GCC 6, and
g++ -std=gnu++98 for older releases.
Table 3.1. C++ Command Options
| Option Flags | Description |
|---|---|
-std=c++98 or -std=c++03
| Use the 1998 ISO C++ standard plus amendments. |
-std=gnu++98 or -std=gnu++03
| As directly above, with GNU extensions. |
-std=c++11 | Use the 2011 ISO C++ standard. |
-std=gnu++11 | As directly above, with GNU extensions. |
-std=c++14 | Use the 2014 ISO C++ standard. |
-std=gnu++14 | As directly above, with GNU extensions. |
-fexceptions | See exception-free dialect |
-frtti | As above, but RTTI-free dialect. |
-pthread or -pthreads | For ISO C++11
<thread>,
<future>,
<mutex>,
or <condition_variable>.
|
-latomic | Linking to libatomic
is required for some uses of ISO C++11
<atomic>.
|
-lstdc++fs | Linking to libstdc++fs
is required for use of the Filesystem library extensions in
<experimental/filesystem>.
|
-fopenmp | For parallel mode. |