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author | Kitware Robot <kwrobot@kitware.com> | 2013-10-15 15:17:36 (GMT) |
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committer | Brad King <brad.king@kitware.com> | 2013-10-15 18:12:03 (GMT) |
commit | f051814ed0e63badbfd68049354f36259dbf4b49 (patch) | |
tree | f4e6f885f86c882d723a7dd53d2b702d0c7fdffb /Help/command/function.rst | |
parent | e94958e99c4dec26c86ce8b76d744c04ba960675 (diff) | |
download | CMake-f051814ed0e63badbfd68049354f36259dbf4b49.zip CMake-f051814ed0e63badbfd68049354f36259dbf4b49.tar.gz CMake-f051814ed0e63badbfd68049354f36259dbf4b49.tar.bz2 |
Convert builtin help to reStructuredText source files
Run the convert-help.bash script to convert documentation:
./convert-help.bash "/path/to/CMake-build/bin"
Then remove it.
Diffstat (limited to 'Help/command/function.rst')
-rw-r--r-- | Help/command/function.rst | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Help/command/function.rst b/Help/command/function.rst new file mode 100644 index 0000000..b18e03c --- /dev/null +++ b/Help/command/function.rst @@ -0,0 +1,31 @@ +function +-------- + +Start recording a function for later invocation as a command. + +:: + + function(<name> [arg1 [arg2 [arg3 ...]]]) + COMMAND1(ARGS ...) + COMMAND2(ARGS ...) + ... + endfunction(<name>) + +Define a function named <name> that takes arguments named arg1 arg2 +arg3 (...). Commands listed after function, but before the matching +endfunction, are not invoked until the function is invoked. When it +is invoked, the commands recorded in the function are first modified +by replacing formal parameters (${arg1}) with the arguments passed, +and then invoked as normal commands. In addition to referencing the +formal parameters you can reference the variable ARGC which will be +set to the number of arguments passed into the function as well as +ARGV0 ARGV1 ARGV2 ... which will have the actual values of the +arguments passed in. This facilitates creating functions with +optional arguments. Additionally ARGV holds the list of all arguments +given to the function and ARGN holds the list of arguments past the +last expected argument. + +A function opens a new scope: see set(var PARENT_SCOPE) for details. + +See the cmake_policy() command documentation for the behavior of +policies inside functions. |