CMake

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Brad King 711b63f7e0 Add policy CMP0019 to skip include/link variable re-expansion Historically CMake has always expanded ${} variable references in the values given to include_directories(), link_directories(), and link_libraries(). This has been unnecessary since general ${} evaluation syntax was added to the language a LONG time ago, but has remained for compatibility with VERY early CMake versions. For a long time the re-expansion was a lightweight operation because it was only processed once at the directory level and the fast-path of cmMakefile::ExpandVariablesInString was usually taken because values did not have any '$' in them. Then commit `d899eb71` (Call ExpandVariablesInString for each target's INCLUDE_DIRECTORIES, 2012-02-22) made the operation a bit heavier because the expansion is now needed on a per-target basis. In the future we will support generator expressions in INCLUDE_DIRECTORIES with $<> syntax, so the fast-path in cmMakefile::ExpandVariablesInString will no longer be taken and re-expansion will be very expensive. Add policy CMP0019 to skip the re-expansion altogether in NEW behavior. In OLD behavior perform the expansion but improve the fast-path heuristic to match ${} but not $<>. If the policy is not set then warn if expansion actually does anything. We expect this to be encountered very rarely in practice.		2012-12-07 09:51:19 -05:00
Docs	cmake-mode.el: add local keybindings	2012-09-21 06:28:24 +02:00
Example	Remove trailing whitespace from most CMake and C/C++ code	2012-08-13 14:18:39 -04:00
Modules	Merge topic 'windows-ce'	2012-11-28 08:49:56 -05:00
Source	Add policy CMP0019 to skip include/link variable re-expansion	2012-12-07 09:51:19 -05:00
Templates	Fix config-specific INCLUDE_DIRECTORIES in multi-config generators	2012-10-17 16:24:14 -04:00
Tests	Add policy CMP0019 to skip include/link variable re-expansion	2012-12-07 09:51:19 -05:00
Utilities	Merge topic 'import-KWSys-subtree'	2012-11-07 09:07:15 -05:00
.gitattributes	Add CMAKE_GNUtoMS option to convert GNU .dll.a to MS .lib	2011-12-05 18:13:49 -05:00
.hooks-config.bash	Add pre-commit\|commit-msg\|prepare-commit-msg hook placeholders	2011-10-24 10:18:36 -04:00
CMakeCPack.cmake	Convert the CPACK_CYGWIN_PATCH_NUMBER variable to a cache variable	2012-08-16 16:40:24 -04:00
CMakeCPackOptions.cmake.in	Remove CMake-language block-end command arguments	2012-08-13 14:19:16 -04:00
CMakeGraphVizOptions.cmake	Convert CMake-language commands to lower case	2012-08-13 14:19:16 -04:00
CMakeLists.txt	Enable some compiler warnings when building CMake.	2012-11-13 13:26:59 -05:00
CMakeLogo.gif	ENH: fancier logo	2007-11-26 13:21:57 -05:00
CTestConfig.cmake	Convert CMake-language commands to lower case	2012-08-13 14:19:16 -04:00
CTestCustom.cmake.in	Merge topic 'import-KWSys-subtree'	2012-11-07 09:07:15 -05:00
CTestCustom.ctest.in	ENH: Create CTestCustom.cmake instead of CTestCustom.ctest. Create the old file to include the new one for compatibility. This should prevent the long delays of CTest traversing the whole tree looking for CTestCustom.ctest files.	2007-08-31 14:51:09 -04:00
ChangeLog.manual	CMake 2.8.10.2	2012-11-26 13:04:20 -05:00
ChangeLog.txt	Add new changelog to get ready for release	2009-09-23 16:45:29 -04:00
CompileFlags.cmake	Linux/PA-RISC: Link with --unique=.text.* to help binutils	2012-10-31 16:28:51 -04:00
Copyright.txt	Update main Copyright.txt year range for 2011	2011-11-10 07:56:31 -05:00
DartConfig.cmake	Convert CMake to OSI-approved BSD License	2009-09-28 11:43:28 -04:00
DartLocal.conf.in	ENH: remove superior dean i, no longer uses borland	2007-12-03 20:44:43 -05:00
Readme.txt	Convert CMake to OSI-approved BSD License	2009-09-28 11:43:28 -04:00
bootstrap	Merge topic 'copyright-year'	2012-11-06 14:13:05 -05:00
cmake_uninstall.cmake.in	Remove CMake-language block-end command arguments	2012-08-13 14:19:16 -04:00
configure	Simplify bootstrap script source dir detection	2009-09-25 10:48:24 -04:00
doxygen.config	Remove trailing whitespace from most CMake and C/C++ code	2012-08-13 14:18:39 -04:00

Readme.txt

This is CMake, the cross-platform, open-source make system.
CMake is distributed under the BSD License, see Copyright.txt.
For documentation see the Docs/ directory once you have built CMake
or visit http://www.cmake.org.


Building CMake
==============


Supported Platforms
-------------------

MS Windows, Mac OS X, Linux, FreeBSD, Solaris, HP-UX, IRIX, BeOS, QNX

Other UNIX-like operating systems may work too out of the box, if not
it shouldn't be a major problem to port CMake to this platform. Contact the
CMake mailing list in this case: http://www.cmake.org/mailman/listinfo/cmake


If you don't have any previous version of CMake already installed
--------------------------------------------------------------

* UNIX/Mac OSX/MinGW/MSYS/Cygwin:

You need to have a compiler and a make installed.
Run the bootstrap script you find the in the source directory of CMake.
You can use the --help option to see the supported options.
You may want to use the --prefix=<install_prefix> option to specify a custom
installation directory for CMake. You can run the bootstrap script from
within the CMake source directory or any other build directory of your
choice. Once this has finished successfully, run make and make install.
So basically it's the same as you may be used to from autotools-based
projects:

$ ./bootstrap; make; make install


* Other Windows:

You need to download and install a binary release of CMake in order to build
CMake.  You can get these releases from
http://www.cmake.org/HTML/Download.html .  Then proceed with the instructions
below.


You already have a version of CMake installed
---------------------------------------------

You can build CMake as any other project with a CMake-based build system:
run the installed CMake on the sources of this CMake with your preferred
options and generators. Then build it and install it.
For instructions how to do this, see http://www.cmake.org/HTML/RunningCMake.html