http://gcc.gnu.org/onlinedocs/gcc-2.95.3/gcc.html
Using and Porting the GNU Compiler Collection (GCC)

This manual documents how to run, install and port the GNU compiler, as well as its new features and incompatibilities, and how to report bugs. It corresponds to GCC version 2.95.

1. Compile C, C++, Objective C, or Fortran      You can compile C or C++ programs.
2. GCC Command Options      Command options supported by `gcc'.
3. Installing GNU CC        How to configure, compile and install GCC.
4. Extensions to the C Language Family      GNU extensions to the C language family.
5. Extensions to the C++ Language       GNU extensions to the C++ language.
6. gcov: a Test Coverage Program        gcov: a GCC test coverage program.
7. Known Causes of Trouble with GCC     If you have trouble installing GCC.
8. Reporting Bugs       How, why and where to report bugs.
9. How To Get Help with GCC     How to find suppliers of support for GCC.
10. Contributing to GCC Development     How to contribute to testing and developing GCC.
11. Using GCC on VMS
12. GCC and Portability     Goals of GCC's portability features.
13. Interfacing to GCC Output       Function-call interface of GCC output.
14. Passes and Files of the Compiler        Order of passes, what they do, and what each file is for.
15. RTL Representation      The intermediate representation that most passes work on.
16. Machine Descriptions        How to write machine description instruction patterns.
17. Target Description Macros       How to write the machine description C macros.
18. The Configuration File      Writing the `xm-machine.h' file.
19. Makefile Fragments      Writing the `t-target' and `x-host' files.
Funding Free Software       How to help assure funding for free software.
Linux and the GNU Project
GNU GENERAL PUBLIC LICENSE      GNU General Public License says how you can copy and share GCC.
Contributors to GCC     People who have contributed to GCC.
Index       Index of concepts and symbol names.