An Introduction to GCC: For the GNU Compilers GCC and G++ by Brian J. Gough, Richard M. Stallman

By Brian J. Gough, Richard M. Stallman

This handbook offers a whole educational creation to the GNU C and C++ compilers, gcc and g++. Many books educate the C and C++ languages, this e-book teaches you the way to take advantage of the compiler itself. the entire universal difficulties and blunder messages encountered through new clients of GCC are rigorously defined, with quite a few easy-to-follow ''Hello World'' examples. subject matters coated contain: compiling C and C++ courses utilizing header records and libraries, caution innovations, use of the preprocessor, static and dynamic linking, debugging, optimization, platform-specific thoughts, profiling and assurance trying out, paths and surroundings variables, and the C++ common library and templates. includes a certain foreword via Richard M. Stallman, vital developer of GCC and founding father of the GNU venture. the entire cash raised from the sale of this e-book will aid the advance of unfastened software program and documentation.

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The standard itself specifies only a limited set of circumstances that should generate diagnostics, and these are what ‘-ansi -pedantic’ reports. 3 Selecting specific standards The specific language standard used by GCC can be controlled with the ‘-std’ option. 159-1989, ISO/IEC 9899:1990). GCC incorporates the corrections in the two ISO Technical Corrigenda to the original standard. ‘-std=iso9899:199409’ The ISO C language standard with ISO Amendment 1, published in 1994. This amendment was mainly concerned with internationalization, such as adding support for multibyte characters to the C library.

3 Preprocessing source files It is possible to see the effect of the preprocessor on source files directly, using the ‘-E’ option of gcc. " ; The ‘-E’ option causes gcc to run the preprocessor, display the expanded output, and then exit without compiling the resulting source code. " ;. The preprocessor also inserts lines recording the source file and line numbers in the form # line-number "source-file ", to aid in debugging and allow the compiler to issue error messages referring to this information.

Templates can be considered as a powerful kind of macro facility. When a templated class or function is used with a specific class or type, such as float or int, the corresponding template code is compiled with that type substituted in the appropriate places. 1 Using C++ standard library templates The C++ standard library ‘libstdc++’ supplied with GCC provides a wide range of generic container classes such as lists and queues, in addition to generic algorithms such as sorting. These classes were originally part of the Standard Template Library (STL), which was a separate package, but are now included in the C++ standard library itself.

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