## 基础
### 设置cmake变量
## 输出
### 消息
## IF条件语句
## 查找软件包
大型软件包都包含.cmake文件，可以直接使用类似：
## 设置链接目录
如果你包含的链接库没有.cmake文件，可以使用如下方式包含：
## 查看设置目录
SET(VARIABLE VALUE)
查看cmake变量
MESSAGE("CMAKE_BINARY_DIR: ${CMAKE_BINARY_DIR}")
查看系统环境变量
MESSAGE("$ENV{PATH}")
检查是否是win32系统
IF(WIN32)
...**do** something...
ELSE(WIN32)
...**do** something **else**...
ENDIF(WIN32)
检查是否是Linux系统
IF(CMAKE_SYSTEM_NAME STREQUAL Linux)
检查环境变量是否设置
IF(DEFINED ENV{FOO_HOME})
message("...using Foo found in $ENV{FOO_HOME}")
ELSE()
message("FOO_HOME is not defined. You must tell CMake where to find Foo")
# exit early
**return**()
ENDIF()
表</span>
检查表中是否包含某值
list(FIND VTK_MODULES_ENABLED "vtkFiltersParallel" HasMyModule)
IF(HasMyModule EQUAL -1)
message(FATAL_ERROR "You must build VTK with more modules.")
ENDIF()
MESSAGE("Hello world")
变量
message("VTK Using Boost? ${VTK_USE_BOOST}")
出错信息
MESSAGE(FATAL_ERROR "An error occured.")
**if** (!VTK_USE_BOOST)
MESSAGE(SEND_ERROR "VTK must be built with VTK_USE_BOOST=ON.")
**endif** ()
逻辑运算符</span>
AND
`**if**(A AND B)`
OR
`**if**(A OR B)`
NOT
`**if**(NOT A)`
Compound
`**if**(NOT(A AND B))`
FIND_PACKAGE(Eigen3)
指定查找.cmake文件位置
`set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/" ${CMAKE_MODULE_PATH})`
检查是否找到软件包
FIND_PACKAGE(Eigen3)
**if**(EIGEN3_FOUND)
... **do** something ...
**endif**(EIGEN3_FOUND)
抑制警告
FIND_PACKAGE(Eigen3 QUIET)
取消版本警告</span>
cmake_minimum_required(VERSION 2.6.0 FATAL_ERROR)
查找目录中的CMakeList.txt</span>
INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR})
或者
INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
find_library(OPENSSL_LIB ssl $ENV{OPENSSL_LIB_PATH})
如果环境变量包含了OPENSSL_LIB_PATH，直接使用
target_link_libraries(mytarget ${OPENSSL_LIB})
如果没有设置环境变量，通过cmake gui设置。
设置包含目录</span>
`INCLUDE_DIRECTORIES(/some/directory)`
get_property(inc_dirs DIRECTORY PROPERTY INCLUDE_DIRECTORIES)
message("inc_dirs = ${inc_dirs}")
自动化配置和生成</span>
`cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=/usr/mylocation ../`
编译器设置</span>
设置标识
ccmake ../../src/boost -DCMAKE_IS_EXPERIMENTAL=YES_I_KNOW
设置预处理标识
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D__WXGTK__")
强制使用g++
`set(MySources main.c anotherFile.c)add_executable(SpinRecognize ${MySource})set_source_files_properties(${MySources} PROPERTIES LANGUAGE CXX)`
设置目标
set_target_properties(
myexe_target
PROPERTIES COMPILE_FLAGS
"-Wall")
设置默认生成类型</span>
SET(CMAKE_BUILD_TYPE Debug CACHE STRING "default to debug" FORCE)
自定义类型</span>
String
SET(BUILD_PARAVIEW_PLUGIN ON CACHE STRING "Build Paraview plugin?" FORCE)
Bool
SET(DAI_WITH_BP ON CACHE BOOL "Belief Propagation" FORCE)
Comparison
**if**(DAI_WITH_BP EQUALS ON)
#**do** something
endif(DAI_WITH_BP EQUALS ON)
或者
**if**(DAI_WITH_BP)
#**do** something
endif(DAI_WITH_BP)
链接到特定库
ITK
ITK目录为：
export ITK_DIR=/home/doriad/bin/ITK
CMakeLists.txt写为：
FIND_PACKAGE(ITK REQUIRED)
INCLUDE(${ITK_USE_FILE})
ADD_EXECUTABLE(CastImageFilter CastImageFilter.cxx)
TARGET_LINK_LIBRARIES(CastImageFilter
vtkHybrid
ITKIO ITKBasicFilters ITKCommon
)
VXL
环境变量：
export VXLBIN="/home/doriad/bin/vxl"
Then in the CMakeLists.txt use:
FIND_PACKAGE(VXL REQUIRED)
INCLUDE(${VXL_CMAKE_DIR}/UseVXL.cmake)
VTK
Add the path to your environment:
export VTK_DIR="/home/doriad/bin/VTK"
Then in the CMakeLists.txt use:
FIND_PACKAGE(VTK REQUIRED)
INCLUDE(${VTK_USE_FILE})
Boost
假设生成为 ./bjam —prefix=/home/doriad/bin install
需要先修改 .bashrc:
export BOOST_ROOT="/home/doriad/bin"
再写cmakelist.txt
SET(Boost_USE_MULTITHREAD ON) #set a flag
FIND_PACKAGE(Boost)
INCLUDE_DIRECTORIES(${INCLUDE_DIRECTORIES} ${Boost_INCLUDE_DIRS})
LINK_DIRECTORIES(${LINK_DIRECTORIES} ${Boost_LIBRARY_DIRS})
OpenCV
Add to the environment:
export OpenCV_DIR=/home/doriad/bin/OpenCV
Then in the CMakeLists.txt use:
FIND_PACKAGE(OpenCV REQUIRED )
INCLUDE_DIRECTORIES( ${OPENCV_INCLUDE_DIR} )
ADD_EXECUTABLE(Scalar Scalar.cxx)
TARGET_LINK_LIBRARIES(Scalar ${OpenCV_LIBS})
Get Help Using a Library
cmake --help-module FindBoost
Add new libraries to CMake
/usr/share/cmake/Modules/FindOpenGL.cmake|
Dependency Graph
ccmake ../src/Program/ --graphviz=test.graph
dotty test.graph
CTest
Run a specific test by number
e.g. Test 622
ctest -I 622,622
Run a range of tests
e.g. Test 622 to 625
ctest -I 622,625
Run a test by name
ctest -R "itkTransformPoint*"|
Show verbose output of a test
ctest -V -R "itkTransformPoint*"|
Create a Test
cmake_minimum_required(VERSION 2.6) project(simple)ENABLE_TESTING() add_executable(simple simple.cpp)add_test(SimpleTest simple)
Link to a library
ADD_EXECUTABLE(ColoredLines ColoredLines.cpp)TARGET_LINK_LIBRARIES(ColoredLines vtkHybrid)
Create a library
add_library(MatlabLibrary ./MatlabDll/LidarK.cpp)
Installing executables
Once your project is built, you can use the ‘install’ make target to copy the executables to the directory specified by CMAKE_INSTALL_PREFIX.
add_executable(test test.cxx)install(TARGETS test RUNTIME DESTINATION ${CMAKE_INSTALL_PREFIX})
If you get an error like:
error while loading shared libraries: I get
libwx_gtk2u_core-2.9.so.1: cannot open shared object file: No such file or directory
you should add:
SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
to your CMakeLists.txt file.
Utilities
Add non-compiled files to a project
This allows files that are not compiled to be added to a project (Qt Creator, for example) while keeping them logically separated from files that are compiled (in the normal add_executable command):
add_custom_target(
MyProjectSources SOURCES
MyProject.h
)
Recursively add subdirectories to INCLUDE_DIRECTORIES
MACRO(HEADER_DIRECTORIES return_list) FILE(GLOB_RECURSE new_list *.h) SET(dir_list "") FOREACH(file_path ${new_list}) GET_FILENAME_COMPONENT(dir_path ${file_path} PATH) SET(dir_list ${dir_list} ${dir_path}) ENDFOREACH() LIST(REMOVE_DUPLICATES dir_list) SET(${return_list} ${dir_list})ENDMACRO()
来源： <[http://www.vtk.org/Wiki/CMake/Examples](http://www.vtk.org/Wiki/CMake/Examples)>
