Chapter 3. Using
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Chapter 3. Using

Table of Contents

Command Options
Headers
Header Files
Mixing Headers
The C Headers and namespace std
Precompiled Headers
Macros
Namespaces
Available Namespaces
namespace std
Using Namespace Composition
Linking
Almost Nothing
Finding Dynamic or Shared Libraries
Concurrency
Prerequisites
Thread Safety
Atomics
IO
Structure
Defaults
Future
Alternatives
Containers
Exceptions
Exception Safety
Exception Neutrality
Doing without
Compatibility
With C
With POSIX thread cancellation
Debugging Support
Using g++
Debug Versions of Library Binary Files
Memory Leak Hunting
Data Race Hunting
Using gdb
Tracking uncaught exceptions
Debug Mode
Compile Time Checking
Profile-based Performance Analysis

Command Options

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.

By default, g++ is equivalent to g++ -std=gnu++98. The standard library also defaults to this dialect.

Table 3.1. C++ Command Options

Option FlagsDescription
-std=c++98Use the 1998 ISO C++ standard plus amendments.
-std=gnu++98As directly above, with GNU extensions.
-std=c++11Use the 2011 ISO C++ standard.
-std=gnu++11As directly above, with GNU extensions.
-fexceptionsSee exception-free dialect
-frttiAs above, but RTTI-free dialect.
-pthread or -pthreadsFor ISO C++11 <thread>, <future>, <mutex>, or <condition_variable>.
-fopenmpFor parallel mode.

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