Cmake qmake simple knowledge

CMake（Cross platform Make） It is an open source cross platform automatic construction tool , It can generate all kinds of... Across platforms makefile perhaps project file , Support the use of various compilation tools to generate executable programs or link libraries .

CMake Don't compile the program yourself , It's equivalent to using your own build script CMakeLists.txt, Call various compilation toolsets to generate executable programs or link libraries .

Generally used to compile programs makefile The files are complicated , It's more troublesome to write by yourself , And the use of CMake , You can write relatively simple CMakeLists.txt , from CMake according to CMakeLists.txt Automatic generation makefile, And then you can use it make Generate executable programs or link libraries .

qmake by QT Project building tools , Can generate cross platform .pro Project documents , It can generate corresponding files according to different operating systems and compiling tools Makefile, Used to build executable programs or link libraries .

Qt Use .pro Document management project ;
VC++ Then use .vcproj As a project file .
Integrated development environments are usually based on project documents （.pro/.vcproj） Manage and build projects .

Makefile
That is, generate script , Although you can call the compiler directly, such as g++ compiler , But if there are more code files in the project , Which code files have been updated and need to be recompiled , Which code has not been changed and does not need to be recompiled, etc , It's troublesome to rely on the programmer's own memory , What other code needs to be preprocessed or linked to which library files , These are complicated processes . In order to standardize the compilation and generation process of the program , Generated a standardized generation script , Namely Makefile, generator make According to the standard Makefile Automatically generate target program or library files .

To put it simply , Is to define Makefile , Let programmers just focus on how to write code , And all the dirty work in the process of generating the program is handed over to make Program .

Now? Makefile There are usually tools to automatically generate , Such as qmake Tools , This greatly reduces the burden on programmers .

Makefile
That is, generate script , Although you can call the compiler directly, such as g++ compiler , But if there are more code files in the project , Which code files have been updated and need to be recompiled , Which code has not been changed and does not need to be recompiled, etc , It's troublesome to rely on the programmer's own memory , What other code needs to be preprocessed or linked to which library files , These are complicated processes . In order to standardize the compilation and generation process of the program , Generated a standardized generation script , Namely Makefile, generator make According to the standard Makefile Automatically generate target program or library files . To put it simply , Is to define Makefile , Let programmers just focus on how to write code , And all the dirty work in the process of generating the program is handed over to make Program .

Now? Makefile There are usually tools to automatically generate , Such as qmake Tools , This greatly reduces the burden on programmers .

Linux/Unix The extension of static library in the system is generally .a, The dynamic library extension is generally .so .Windows In the system VC The static library extension used by the compiler is generally .lib, The dynamic library extension is generally .dll .

windeployqt yes Qt Provided Windows Platform packaging tool , It can find StuInfoFile.exe All dynamic link libraries required for executable files , And copy them to the current folder .