CMake变量(提供信息的变量)
- 目录
- CMAKE_VERSION
- CMAKE_MAJOR_VERSION
- CMAKE_MINOR_VERSION
- CMAKE_PATCH_VERSION
- CMAKE_TWEAK_VERSION
- CMAKE_PROJECT_NAME
- CMAKE_BINARY_DIR
- CMAKE_SOURCE_DIR
- CMAKE_CURRENT_BINARY_DIR
- CMAKE_CURRENT_SOURCE_DIR
- PROJECT_NAME
- PROJECT_VERSION
- PROJECT_VERSION_MAJOR
- PROJECT_VERSION_MINOR
- PROJECT_VERSION_PATCH
- PROJECT_VERSION_TWEAK
- PROJECT_BINARY_DIR
- PROJECT_SOURCE_DIR
- <PROJECT_NAME>_VERSION
- <PROJECT_NAME>_VERSION_MAJOR
- <PROJECT_NAME>_VERSION_MINOR
- <PROJECT_NAME>_VERSION_PATCH
- <PROJECT_NAME>_VERSION_TWEAK
- <PROJECT_NAME>_SOURCE_DIR
- <PROJECT_NAME>_BINARY_DIR
First:
CMAKE_VERSION
- The CMake version string as three non-negative integer components separated by . and possibly followed by - and other information. The first two components
represent the feature level and the third component represents either a bug-fix level or development date.- Release versions and release candidate versions of CMake use the format:
- <major>.<minor>.<patch>[-rc<n>]
- where the <patch> component is less than . Development versions of CMake use the format:
- <major>.<minor>.<date>[-<id>]
- where the <date> component is of format CCYYMMDD and <id> may contain arbitrary(任意的) text. This represents development as of a particular date following
the <major>.<minor> feature release.
CMAKE_MAJOR_VERSION
CMAKE_MINOR_VERSION
CMAKE_PATCH_VERSION
CMAKE_TWEAK_VERSION
- Individual component values of CMAKE_VERSION
CMAKE_TWEAK_VERSION is defined to 0
for compatibility with code written for older CMake versions that may have defined higher values.Because in CMake versions 2.8.2 through 2.8.12, this variable holds the fourth version number component of the CMAKE_VERSION
variable.
CMAKE_BINARY_DIR
- The path to the top level of the build tree.
- This is the full path to the top level of the current CMake build tree. For an in-source build, this would be the same as CMAKE_SOURCE_DIR.
CMAKE_SOURCE_DIR
- The path to the top level of the source tree.
- This is the full path to the top level of the current CMake source tree. For an in-source build, this would be the same as CMAKE_BINARY_DIR
顶层CMakeLists.txt文件所在路径。
CMAKE_CURRENT_BINARY_DIR
CMAKE_CURRENT_SOURCE_DIR
- #add_subdirectory() will create a binary and a source directory in the build tree, and as it is being processed this variableswill be set.
add_subdirectory(source_dir [binary_dir])
#Add a subdirectory(子路径) to the build.
#The source_dir specifies the directory in which the source CMakeLists.txt and code files are located.If it is a relative path, it will be evaluated with
#respect to the current directory (the typical usage), but it may also be an absolute path.
#Thebinary_dir
specifies the directory in which to place the output files. If it is a relative path it will be evaluated with respect to the current
#output directory, but it may also be an absolute path. Ifbinary_dir
is not specified, the value ofsource_dir
, before expanding any relative path, will
#be used.
#子路径下的CMakeLists.txt执行完之后才会继续执行add_subdirectory()下一条语句子。
Second:
PROJECT_VERSION
- Value given to the VERSION option of the most recent call to the project() command, if any.
PROJECT_VERSION_MAJOR
PROJECT_VERSION_MINOR
PROJECT_VERSION_PATCH
PROJECT_VERSION_TWEAK
- First version number component of the PROJECT_VERSION variable as set by the project() command.
Second...
...
PROJECT_BINARY_DIR
- Full path to build directory for project.
- This is the binary directory of the most recent project() command.
PROJECT_SOURCE_DIR
- Top level source directory for the current project.
- This is the source directory of the most recent project() command.
Third:
PROJECT_NAME
- #The name of the current project.
- #This specifies name of the current project from the closest inherited project() command.
project(<PROJECT_NAME> [LANGUAGES] [<language-name>...])
<PROJECT_NAME>_VERSION
- Value given to the VERSION option of the most recent call to the project() command with project name <PROJECT-NAME>, if any.
<PROJECT_NAME>_VERSION_MAJOR
<PROJECT_NAME>_VERSION_MINOR
<PROJECT_NAME>_VERSION_PATCH
<PROJECT_NAME>_VERSION_TWEAK
- ...
<PROJECT_NAME>_SOURCE_DIR
<PROJECT_NAME>_BINARY_DIR
- Top level source directory for the named project.
- Top level binary directory for the named project.
- A variable is created with the name used in the project() command, and is the source directory and binary directory for the project. This can be useful
when add_subdirectory() is used to connect several projects.
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