CMake/README

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WELCOME TO CROSS-PLATFORM MAKE (CMake)
-------------------------------------
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CMake is a cross-platform, extensible build environment. It currently generates
Unix makefiles and Microsoft Visual C++ projects/workspaces.
To use CMake, create CMakeLists.txt in each directory that makes up your
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source repository. The CMakeLists.txt file contains rules. Each rule does
something different, like defining a list of source code, include directories,
etc. Once CMake has processed all the rules in all the CMakeLists.txt files,
it generates the appropriate "makefile(s)" for the system/compiler that you
are on.
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THE BOOK OF RULES
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-----------------
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The key to using CMake is to learn the rules. Each rule has the same format:
NAME_OF_RULE(args....)
where args is a white-space separated listed of arguments. (Arguments
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containing spaces should be quoted). For example:
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INCLUDE_DIRECTORIES(./ d:/include "c:/Program Files/include")
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note that Unix-style slashes are used. The rules may reference CMake
variables, either built-in or defined variables. Two important variables
are built-in to CMake:
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CMAKE_SOURCE_DIR - The root directory of the source code
directory tree.
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CMAKE_BINARY_DIR - The root directory of the build tree
where binaries are placed. This includes
object files, libraries, and executables.
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A rule might reference these as follows:
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INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR})
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using the ${} delimiters.
Here is a list of current rules. You may also wish to view
the Doxygen documentation (if available) or generate it with
the doxygen.config file in this directory.
Rules: (Generated with cmDumpDocumentation)
------------------------------------------
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ABSTRACT_FILES - A list of abstract classes, useful for wrappers.
Usage: ABSTRACT_FILES(file1 file2 ..)
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ADD_TARGET - Add an extra target to the build system.
Usage: ADD_TARGET(Name "command to run")
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AUX_SOURCE_DIRECTORY - Add all the source files found in the specified
directory to the build.
Usage: AUX_SOURCE_DIRECTORY(dir)
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EXECUTABLES - Add a list of executables files.
Usage: EXECUTABLES(file1 file2 ...)
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FIND_INCLUDE - Find an include path.
Usage: FIND_INCLUDE(DEFINE try1 try2 ...)
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FIND_LIBRARY - Find a library.
Usage: FIND_LIBRARY(DEFINE try1 try2)
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FIND_PROGRARM - Find an executable program.
Usage: FIND_PROGRAM(NAME executable1 executable2 ...)
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INCLUDE_DIRECTORIES - Add include directories to the build.
Usage: INCLUDE_DIRECTORIES(dir1 dir2 ...)
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LIBRARY - Set a name for a library.
Usage: LIBRARY(libraryname)
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LINK_DIRECTORIES - Specify link directories.
Usage: Specify the paths to the libraries that will be linked in.
LINK_DIRECTORIES(directory1 directory2 ...)
The directories can use built in definitions like
CMAKE_BINARY_DIR and CMAKE_SOURCE_DIR.
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LINK_LIBRARIES - Specify a list of libraries to be linked into executables or
shared objects.
Usage: LINK_LIBRARIES(library1 library2)
Specify a list of libraries to be linked into
executables or shared objects. This rule is passed
down to all other rules. The library name should be
the same as the name used in the LIBRARY(library) rule.
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PROJECT - Set a name for the entire project. One argument.
Usage: PROJECT(projectname)
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SOURCE_FILES - Add a list of source files.
Usage: SOURCE_FILES(file1 file2 ...)
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SOURCE_FILES_REQUIRE - Add a list of source files if the required
variables are set.
Usage: SOURCE_FILES_REQUIRE(var1 var2 ... SOURCES_BEGIN file1 file2 ...)
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SUBDIRS - Add a list of subdirectories to the build.
Usage: SUBDIRS(dir1 dir2 ...)
Add a list of subdirectories to the build.
This will cause any CMakeLists.txt files in the sub directories
to be processed by CMake.
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TESTS - Add a list of executables files that are run as tests.
Usage: TESTS(file1 file2 ...)
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UNIX_DEFINES - Add -D flags to the command line for Unix only.
Usage: UNIX_DEFINES(-DFOO -DBAR)
Add -D flags to the command line for Unix only.
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UNIX_LIBRARIES - Add libraries that are only used for Unix programs.
Usage: UNIX_LIBRARIES(library -lm ...)
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WIN32_DEFINES - Add -D define flags to command line for Win32 environments.
Usage: WIN32_DEFINES(-DFOO -DBAR ...)
Add -D define flags to command line for Win32 environments.
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WIN32_LIBRARIES - Add libraries that are only used for Win32 programs.
Usage: WIN32_LIBRARIES(library -lm ...)
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USING / BUILDING WITH CMAKE
---------------------------
Windows:
-------
These programs are used to drive CMake on Windows:
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CMakeSetup.exe -> window MFC based GUI for configure on windows
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CMakeSetupCMD.exe -> windows command line version of CMakeConfigure
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To build a project on Windows:
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load CMake/Source/CMakeSetup.dsw
Build it
Run it
Specify paths
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Load ITK.dsw
Build Common, Numerics, then any of the many executables,
or do a Batch build with debug only.
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Unix:
----
These programs/files are used to drive CMake on Unix:
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configure -> run on unix to configure for build
CMakeBuildTargets -> Unix program to read CMakeLists.txt and
generate CMakeTargets.make
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makefile fragments:
CMakeMaster.make -> main file to be included by makefiles
CMakeVariables.make -> all make varibles are set in this file
CMakeRules.make -> All build rules are here (except Simple Rules)
CMakeSimpleRules.make -> simple build rules for .o to .cxx, this is
separate to be able to build CMakeBuildTargets
itself.
CMakeLocal.make -> Place for hand configuration
CMakeTargets.make -> generated rules for make style build in each
directory
MakefileTemplate.make -> master makefile template used by configure to
generate Makefiles
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Unix install:
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In place (object files end up in source code directory):
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./configure
make
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Other directory (object files are in another directory):
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mkdir Insight-build
cd Insight-build
../Insight/configure
make
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FOR MORE INFORMATION
--------------------
Contact Bill Hoffman bill.hoffman@kitware.com who is the
principal developer.