How to compile a static library in Linux

Question

I have a question  How to compile a static library in Linux with gcc  i e  I need to compile my source code into a file named out a  Is it sufficient to simply compile with the command gcc -o out a out c  I m not quite familiar with gcc  hope anyone can give me a hand

User · Accepted Answer

See Creating a shared and static library with the gnu compiler [gcc]

gcc -c -o out.o out.c

-c means to create an intermediary object file, rather than an executable.

ar rcs libout.a out.o

This creates the static library. r means to insert with replacement, c means to create a new archive, and s means to write an index. As always, see the man page for more info.

User · Answer

Here a full makefile example   makefile  TARGET   prog    TARGET   main o lib a     gcc    -o     main o  main c     gcc -c   lt  -o     lib a  lib1 o lib2 o     ar rcs        lib1 o  lib1 c lib1 h     gcc -c -o      lt   lib2 o  lib2 c lib2 h     gcc -c -o      lt   clean      rm -f   o   a   TARGET    explaining the makefile    target  prerequisites - the rule head    - means the target    - means all prerequisites   lt  - means just the first prerequisite ar - a Linux tool to create  modify  and extract from archives see the man pages for further information  The options in this case mean    r - replace files existing inside the archive c - create a archive if not already existent s - create an object-file index into the archive    To conclude  The static library under Linux is nothing more than a archive of object files   main c using the lib   include  lt stdio h gt    include  lib h   int main   void         fun1 10       fun2 10       return 0      lib h the libs main header   ifndef LIB H INCLUDED  define LIB H INCLUDED   include  lib1 h   include  lib2 h    endif   lib1 c first lib source   include  lib1 h    include  lt stdio h gt   void fun1   int x         printf   i n  x       lib1 h the corresponding header   ifndef LIB1 H INCLUDED  define LIB1 H INCLUDED   ifdef   cplusplus    extern    C       endif  void fun1   int x      ifdef   cplusplus       endif   endif    LIB1 H INCLUDED      lib2 c second lib source   include  lib2 h    include  lt stdio h gt   void fun2   int x         printf   i n  2 x       lib2 h the corresponding header   ifndef LIB2 H INCLUDED  define LIB2 H INCLUDED   ifdef   cplusplus    extern    C       endif  void fun2   int x      ifdef   cplusplus       endif   endif    LIB2 H INCLUDED

User · Answer

Generate the object files with gcc  then use ar to bundle them into a static library

[c] How to compile a static library in Linux?

Examples related to c

Examples related to gcc

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