CMake Simple usage

CMake is a cross-platform compilation tool, similar to the Automake

installation

# CD cmake-2.8.10.2
#/bootstrap # make
Install

Project

Project (<projectname> [CXX] [C] [JAVA])

Defines the name of the project and the supported language. This line introduces two variables (Hello_binary_dir and Hello_source_dir)

Set

Set (Var[value] [CACHE TYPE docstring [FORCE]])

Explicit definition of variables

Set (Src_list hello.c)

Message

Message ([Send_error | STATUS | Fatal_error] "message to display" ...)

Output user information to the terminal satus: Output information Send_error: Error generated, build process skipped Fatal_error: immediately terminate all cmake processes

Message (STATUS ' This is SOURCE dir ' ${hello_source_dir})

add_executable

Add_executable (<name> [WIN32] [macosx_bundle] [Exclude_from_all]

Introduces an executable file for the project using the given source file

Add_executable (${project_name} ${src_list})

examples

Project (Hello C CXX)

set (src_list helloworld.c) message

(STATUS ' This is BINARY dir ' ${hello_binary_dir})
Message (STATUS ' This is SOURCE dir ' ${cmake_source_dir} '

add_executable (${project_name} ${src_list})

Common variable names Project_name:project directive defines the project name Cmake_source_dir/project_source_dir: Project top-level directory cmake_current_list_file: This variable's CMakeLists.txt full path Cmake_current_list_line: The row where this variable is located Executable_output_path/library_output_path: The final result of the storage directory

Common Instructions
Include_directories: The location of the required header files for the program

Link_directories: The location of the required library files for the program

Target_link_libraries: Link library name

Target_link_libraries (${project_name} pthread)
target_link_libraries (${project_name}-lzlog)

Note: Target_link_libraries to be placed behind the add_executable, or report the following error

CMake Error at Cmakelists.txt:11 (target_link_libraries):
  cannot specify link libraries for Target "lwm2mclient" whic H is isn't built by this
  project.

Build_shared_libs: Generated as dynamic library

SET (Build_shared_libs on)

Add_library: Defines the name of the generated library, as well as the type and source files required

Add_library (Libname [shared| static| MODULE] [Exclude_from_all] source1 source2 ... sourcen)

add_library (Myhello ${src_list})//name do not conflict

# make
[ 50%] Built target Hello
scanning dependencies of target Myhello
[100%] Building C Object cmakefiles/myhello.dir/h ELLOWORLD.O
linking C Static library LIBMYHELLO.A

Add_definitions: Add-D definition. Make #ifdef Enable_debug Effective

Add_definitions (-denable_debug ...)

Add_test/enable_testing:

Add_test (testname exename arg1 arg2 ...)
Add_test (mytest./bin/hello)
enable_testing ()

Aux_source_directory: Temporarily build a list of source files. Find all source code files in a directory and store the list in a variable

Aux_source_directory (dir VARIABLE)
add_executable (${project_name} ${src_list})

Cmake_minimum_required: Version limit

cmake_minimum_required (version versionnumber [fatal_error])
cmake_minimum_required (version 2.8 Fatal_error)

Install:make INSTALL Use

INSTALL (PROGRAMS bin/hello destination bin)

# cmake-dcmake_install_prefix=./demo/.
# make install
install the project ...
--Install configuration: ""
-Installing:/home/thomas/demo/bin/hello

Add GDB Debugging

# Cmake-dcmake_build_type=debug.