1. Compile the library file
You can use the library method to compile the library file: Library ('foo', ['f1. c', 'f2. c', 'f3. C ']) scons will use the appropriate library prefix and suffix based on your system. Therefore, in the POSIX system, the above example will be compiled as follows: % scons-QCC-O f1.o-C f1.ccc-O f2.o-C f2.ccc-O f3.o-C f3.car RC libfoo. A f1.o f2.o f3.oranlib libfoo. a. If you do not display the name of the specified target database, scons uses the name of the first source file.
1.1 Use source code or target file to compile the library fileIn addition to the source file, the Library can also use the target file, as shown below: Library ('foo', ['f1. c', 'f2. o', 'f3. c', 'f4. o'])
1.2 use staticlibrary to display and compile static databasesLibrary functions are used to compile static libraries. If you want to display the specified static library to be compiled, you can use staticlibrary instead of Library: staticlibrary ('foo', ['f1. c', 'f2. c', 'f3. c'])
1.3 Use sharedlibrary to compile a dynamic libraryTo compile a dynamic library (in the POSIX system) or DLL file (in Windows), you can use sharedlibrary: sharedlibrary ('foo', ['f1. c', 'f2. c', 'f3. C ']) Run scons compilation in POSIX: % scons-QCC-O f1. OS-C f1.ccc-O f2. OS-C f2.ccc-O f3. OS-C f3.ccc-O libfoo. so-shared f1. OS f2. OS f3. OS
2. link library filesWhen linking a library file, use the $ libs variable to specify the library file and use $ libpath to specify the directory for storing the library file: Library ('foo', ['f1. c', 'f2. c', 'f3. C ']) Program ('prog. c', Libs = ['foo', 'bar'], libpath = '. ') You do not need to specify the library file prefix (such as Lib) or suffix (such. A or. lib), scons will automatically match. % Scons-QCC-O f1. OS-C f1.ccc-O f2. OS-C f2.ccc-O f3. OS-C f3.car RC libfoo. A f1.o f2.o f3.oranlib libfoo. ACC-O Prog. o-C Prog. CCC-O prog Prog. o-l. -lfoo-lbar
3. $ libpath tells you where to find the libraryBy default, the linker only searches for library files in the default library directory of the system. Scons also searches for library files in the directory specified by $ libpath. $ Libpath consists of a directory list, as shown below: Program ('prog. C ', Libs = 'M', libpath = ['/usr/lib ','/usr/local/lib ']) the advantage of using the python list is that it can be used across platforms. Another optional method is to connect the library directory with the system-specific path separator into a string: In the POSIX system: libpath = '/usr/lib: /usr/local/lib 'in Windows: libpath = 'C: \ Lib; D: \ Lib' when the linker is executed, scons will create a suitable flags, allows the linker to search for library files in the specified library directory. The above example is compiled in the POSIX system: % scons-QCC-O Prog. o-C Prog. CCC-O prog Prog. o-L/usr/lib-L/usr/local/lib-LM
