What are the gcc options?
GCC Command Options. When you invoke GCC, it normally does preprocessing, compilation, assembly and linking. The “overall options” allow you to stop this process at an intermediate stage. For example, the -c option says not to run the linker.
What is gcc W?
From gcc man page: -Wextra This enables some extra warning flags that are not enabled by -Wall. (This option used to be called -W. The older name is still supported, but the newer name is more descriptive.)
Which gcc option should be used?
When you compile C++ programs, you should invoke GCC as g++ instead. The gcc program accepts options and file names as operands. Many options have multi-letter names; therefore multiple single-letter options may not be grouped: -dv is very different from -d -v. You can mix options and other arguments.
Which option of gcc inhibit all warning messages?
-w is the GCC-wide option to disable warning messages.
What is Wextra?
-Wextra. This enables some extra warning flags that are not enabled by -Wall . (This option used to be called -W .
What does the O option to gcc do?
gcc -o writes the build output to an output file.
What is enable with the ++ 11 or ++ 11 compiler options?
You need to add the option –std=c++11 (not c+11) to the compiler’s command line, which tells the compiler to use the STanDard language version called C++11.
What is gcc pedantic?
The -pedantic option tells GCC to issue warnings in such cases; -pedantic-errors says to make them errors instead. This does not mean that all non-ISO constructs get warnings or errors. See Options to Request or Suppress Warnings, for more detail on these and related command-line options.
What happens when you compile without Z Execstack?
If this item is missing, we have no information and must assume that an executable stack is needed. By default, gcc will mark the stack non-executable, unless an executable stack is needed for function trampolines. The gcc marking can be overridden via the -z execstack or -z noexecstack compiler flags.
How do I disable GCC?
To answer your question about disabling specific warnings in GCC, you can enable specific warnings in GCC with -Wxxxx and disable them with -Wno-xxxx. From the GCC Warning Options: You can request many specific warnings with options beginning -W , for example -Wimplicit to request warnings on implicit declarations.