[c++] When to use dynamic vs. static libraries


Creating a static library

$$:~/static [32]> cat foo.c
#include<stdio.h>
void foo()
{
printf("\nhello world\n");
}
$$:~/static [33]> cat foo.h
#ifndef _H_FOO_H
#define _H_FOO_H

void foo();

#endif
$$:~/static [34]> cat foo2.c
#include<stdio.h>
void foo2()
{
printf("\nworld\n");
}
$$:~/static [35]> cat foo2.h
#ifndef _H_FOO2_H
#define _H_FOO2_H

void foo2();

#endif
$$:~/static [36]> cat hello.c
#include<foo.h>
#include<foo2.h>
void main()
{
foo();
foo2();
}
$$:~/static [37]> cat makefile
hello: hello.o libtest.a
        cc -o hello hello.o -L. -ltest
hello.o: hello.c
        cc -c hello.c -I`pwd`
libtest.a:foo.o foo2.o
        ar cr libtest.a foo.o foo2.o
foo.o:foo.c
        cc -c foo.c
foo2.o:foo.c
        cc -c foo2.c
clean:
        rm -f foo.o foo2.o libtest.a hello.o

$$:~/static [38]>

creating a dynamic library

$$:~/dynamic [44]> cat foo.c
#include<stdio.h>
void foo()
{
printf("\nhello world\n");
}
$$:~/dynamic [45]> cat foo.h
#ifndef _H_FOO_H
#define _H_FOO_H

void foo();

#endif
$$:~/dynamic [46]> cat foo2.c
#include<stdio.h>
void foo2()
{
printf("\nworld\n");
}
$$:~/dynamic [47]> cat foo2.h
#ifndef _H_FOO2_H
#define _H_FOO2_H

void foo2();

#endif
$$:~/dynamic [48]> cat hello.c
#include<foo.h>
#include<foo2.h>
void main()
{
foo();
foo2();
}
$$:~/dynamic [49]> cat makefile
hello:hello.o libtest.sl
        cc -o hello hello.o -L`pwd` -ltest
hello.o:
        cc -c -b hello.c -I`pwd`
libtest.sl:foo.o foo2.o
        cc -G -b -o libtest.sl foo.o foo2.o
foo.o:foo.c
        cc -c -b foo.c
foo2.o:foo.c
        cc -c -b foo2.c
clean:
        rm -f libtest.sl foo.o foo

2.o hello.o
$$:~/dynamic [50]>

Examples related to c++

Method Call Chaining; returning a pointer vs a reference? How can I tell if an algorithm is efficient? Difference between opening a file in binary vs text How can compare-and-swap be used for a wait-free mutual exclusion for any shared data structure? Install Qt on Ubuntu #include errors detected in vscode Cannot open include file: 'stdio.h' - Visual Studio Community 2017 - C++ Error How to fix the error "Windows SDK version 8.1" was not found? Visual Studio 2017 errors on standard headers How do I check if a Key is pressed on C++

Examples related to dll

The program can't start because api-ms-win-crt-runtime-l1-1-0.dll is missing while starting Apache server on my computer PHP 7: Missing VCRUNTIME140.dll How to fix PHP Warning: PHP Startup: Unable to load dynamic library 'ext\\php_curl.dll'? WampServer: php-win.exe The program can't start because MSVCR110.dll is missing msvcr110.dll is missing from computer error while installing PHP installing JDK8 on Windows XP - advapi32.dll error The program can’t start because MSVCR71.dll is missing from your computer. Try reinstalling the program to fix this program ImportError: DLL load failed: %1 is not a valid Win32 application. But the DLL's are there Loading DLLs at runtime in C# Missing `server' JVM (Java\jre7\bin\server\jvm.dll.)

Examples related to shared-libraries

How to install the Six module in Python2.7 "relocation R_X86_64_32S against " linking Error Compilation fails with "relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object" How to create a shared library with cmake? error while loading shared libraries: libncurses.so.5: Build .so file from .c file using gcc command line What's the difference between .so, .la and .a library files? ld cannot find -l<library> How do you find what version of libstdc++ library is installed on your linux machine? What are .a and .so files?

Examples related to static-linking

Define static method in source-file with declaration in header-file in C++ Static linking vs dynamic linking When to use dynamic vs. static libraries

Examples related to dynamic-linking

Telling gcc directly to link a library statically Static linking vs dynamic linking When to use dynamic vs. static libraries