Skip to main content
UploadLanguage (EN)Support
BusinessMobileSocial MediaMarketingTechnologyArt & PhotosCareerDesignEducationPresentations & Public SpeakingGovernment & NonprofitHealthcareInternetLawLeadership & ManagementAutomotiveEngineeringSoftwareRecruiting & HRRetailSalesServicesScienceSmall Business & EntrepreneurshipFoodEnvironmentEconomy & FinanceData & AnalyticsInvestor RelationsSportsSpiritualNews & PoliticsTravelSelf ImprovementReal EstateEntertainment & HumorHealth & MedicineDevices & HardwareLifestyle
AP
Uploaded byAnil Pokhrel
PPT, PDF1,143 views

GCC compiler

This document provides an overview of the GCC compiler, including its history and development by Richard Stallman as part of the GNU project in 1984. It describes how GCC can be used to compile C and C++ code and supports cross-compiling for different architectures. The document outlines several common GCC options such as -c to compile only, -o to specify an output file name, -g to include debugging information, -Wall to show warnings, and -ansi to ensure standard compliance.

Design◦
Downloaded 15 times
1 GCC Compiler Presented by: Anil pokhrel BscCSIT 6th semester
2 Contents • History of GCC • Introduction to GCC • Options in GCC • Conclusion
History of GCC • The original GNU C Compiler (GCC) is developed by Richard Stallman, the founder of the GNU Project. • Richard Stallman founded the GNU project in 1984 to create a complete Unix-like operating system as free software, to promote freedom and cooperation among computer users and programmers.
4 Introduction to GCC • Stands for GNU C/C++ Compiler • A popular console-based compiler for *NIX platforms and others; can cross-compile code for various architectures • gcc to compile C programs; • g++ for C++ • can actually work with also Java and a couple other languages
To compile: -c 1. gcc performs compilation and assembly of the source file without linking. 2. The output are usually object code files, .o; they can later be linked and form the desired executables. 3. Generates one object file per source file keeping the same prefix (before .) of the filename. 4. gcc main.c
Options: -o <filename> • Places resulting file into the filename specified instead of the default one. • Can be used with any generated files (object, executables, assembly, etc.) • If you have the file called source.c; the defaults are: • source.o if -c was specified • a.out if executable • These can be overridden with the -o option. • gcc main.c -o main
Options: -g •Includes debugging info in the generated object code. This info can later be used in gdb. •gcc allows to use -g with the optimization turned on (-O) in case there is a need to debug or trace the optimized code.
Options: -Wall • Shows most of the warnings related to possibly incorrect code. • Wall is a combination of a large common set of the -W options together. These typically include: • unused variables • possibly uninitialized variables when in use for the first time • defaulting return types • missing braces and parentheses in certain context that make it ambiguous • etc.
Options: -ansi • For those who are picky about standard compliance and to ensures the code compiled complies with the ANSI C standard; • These options can be quite annoying for those who don’t know C well since gcc will refuse to compile unkosher C code, which otherwise it has no problems with. • $ gcc -Wall -ansi main.c -o main
Conclusion
Refferences • https://www.geeksforgeeks.org/gcc-command-in-linux- with-examples/ • https://www.rapidtables.com/code/linux/gcc.html • https://en.wikipedia.org/wiki/GNU_Compiler_Collection • https://www.thegeekstuff.com/2012/10/gcc-compiler- options/
13