MakefileExamples

Several generic makefile examples for C, such as

• automatic compilation of sub-folders
• recursive compilation of sub-makefiles, similar to the linux kernel.

If you want to know more about makefile, please visit GNU make. If you need the Chinese version, please visit how-to-write-makefile.

Features:

• Automatically find all source files and header file search paths in the specified code directory.
• Automatically generate dependent files, only compile the files that have been modified recently and ensure that they are correct.
• Clear all compiled files.

How to use:

• BUILD_OUTPUT - Specify the directory where the compiled object files and dependent files are located, if not specified, the default is ./ .
• BUILD_SRC - Specify the code search path, it will compile all searched files with the suffix of .c , and include the search path of all header files with the suffix of .h . If not specified, the default is ./ .
• BUILD_EXE - Specify the file name of the compiled executable file.
• INCLUDES - Usually do not need to be specified, because it will be automatically searched, but it can be used to add a header file search path other than the code search path.
• LD_DIRS - Specify the library search directory.
• LD_LIBS - Specify the required libraries.

Test:

xhr@ubuntu:~/MakefileExamples$ cd automatic/
xhr@ubuntu:~/MakefileExamples/automatic$ make
 CC _build/./foo/bar/proc.o
 CC _build/./main.o
 CC _build/./src/good.o
 LD test.exe
>>> successful !!
xhr@ubuntu:~/MakefileExamples/automatic$ ./test.exe
hello
thread_task
print_good: GOOD_GOOD
AUTHOR: xhr
xhr@ubuntu:~/MakefileExamples/automatic$ ls
_build foo include main.c Makefile src test.exe
xhr@ubuntu:~/MakefileExamples/automatic$ make clean
xhr@ubuntu:~/MakefileExamples/automatic$ ls
foo include main.c Makefile src

Features:

• Use method similar to linux kernel.
• You need to add sub-makefiles(BUILD.mk) under each source file directory to determine which directories or source files need to be compiled.
• Only compile files that have been modified.

How to use:

Only describe the differences from Automatic Folder.

• There is no BUILD_SRC, need to use the BUILD.mk to specify compilation of contents.
• INCLUDES - Do not use relative paths, use ROOT_DIR as a prefix.

Test:

xhr@ubuntu:~/MakefileExamples$ cd recursive/
xhr@ubuntu:~/MakefileExamples/recursive$ make
 CC ./main.o
 CC foo/bar/deep/deeper/deep.o
 CC foo/bar/proc.o
 LD foo/bar/_built-in.a
 CC foo/bar/deep/deep.o
 LD foo/bar/deep/_built-in.a
 LD foo/_built-in.a
 CC src/good.o
 LD src/_built-in.a
 LD ./_built-in.a
 LD test.exe
>>> successful !!
xhr@ubuntu:~/MakefileExamples/recursive$ ./test.exe
hello main: GOOD GOOD
thread_task
print_good: GOOD GOOD
The more deeper file depth.
You can see the sub-makefile example in `foo/BUILD.mk`.
AUTHOR: xhr
xhr@ubuntu:~/MakefileExamples/recursive$ ls
_build BUILD.mk foo include main.c Makefile src test.exe
xhr@ubuntu:~/MakefileExamples/recursive$ make clean
xhr@ubuntu:~/MakefileExamples/recursive$ ls
BUILD.mk foo include main.c Makefile src