Generating static and dynamic libraries under Linux [Linux]

g++ using g++ to compile Hello World

1. Writing the Hello World code

2. Build the executable file using the g++ command hello.out

3. g++ Command Rules

Precompiled g++-E hello. cpp -o hello.i compile    g+ +-s hello.  CPP -o hello.s Assembly    G+ C hello.  CPP -o hello.o

Command explanation

1. Precompiled g++-E hello.cpp-o hello.i

Expand # include <iostream> to capture the display of the last screen

2. Compile g++-S hello.cpp-o Hello.s capture the display of the last screen

3. Compilation, generating object file g++-C hello.cpp-o hello.c display binary file

4. Link, write three files add.h add.cpp main.cpp

Compile run g++ add.h add.cpp main.cpp-o main.out

Static library and dynamic library generation

Static library: Linux: *.a windows: *.lib

Dynamic library: Linux: *.so windows: *.dll

Creation and use of static libraries

Static libraries are aggregates of some target files

Create a static library file using AR

1. Compile the Add.cpp file to generate the ADD.O file g++-C add.cpp

2. Create a. A file from the. o file using ar ar-r libadd.a add.o

3. Use the. a file g++ main.cpp-l.-ladd-o Main

Dynamic library creation and use

1. Create a. So file g++-shared-fpic add.cpp-o libmyadd.so

2. Use the. So file link main g++ main.cpp-l.-lmyadd-o main.out

3. Add the path and run Main.out ld_library_path=. ./main.out

Generating static and dynamic libraries under Linux [Linux]