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Since commit v3.1.0-rc1~565^2~3 (Add platform-specific initialization
step when enabling languages, 2014-04-29) the main enable-language logic
includes the `CMakeSystemSpecificInitialize` module to perform
platform-specific initialization based on `CMAKE_SYSTEM_NAME`. This
should be done during `cmake --find-package` mode too.
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Some are user-facing. Others are source comments.
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Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool. Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience. Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.
Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices. It also references version control
history for more precise information. Therefore we no longer need to spell
out the list of Contributors in each source file notice.
Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing". The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.
Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically. Manually fix up shebang lines and trailing
newlines in a few files. Manually update the notices in a few files that the
script does not handle.
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In commit v2.8.6~102^2~18 (Better support for lib64 and Debian
multiarch, 2011-07-14) variable names "..._LANGUAGE_ARCHITECTURE" were
set instead of the correct "..._LIBRARY_ARCHITECTURE". Fix this typo
and also set the language-independent variable
CMAKE_LIBRARY_ARCHITECTURE.
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Convert several preformatted code block literals that enumerate lists of
options or variables to use reST definition lists instead. Manually
wrap other long lines in code blocks.
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Run the convert-help.bash script to convert documentation:
./convert-help.bash "/path/to/CMake-build/bin"
Then remove it.
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Drop the last use of CMAKE_OSX_SYSROOT_DEFAULT. Replace internal
platform variable CMAKE_${lang}_HAS_ISYSROOT with a more general
CMAKE_${lang}_SYSROOT_FLAG variable. If the -isysroot flag exists and
CMAKE_OSX_SYSROOT points to an SDK (not "/") then always add it to
compiler command lines. This is already done in the Xcode IDE.
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At the top of a build tree we configure inside the CMakeFiles directory
files such as "CMakeSystem.cmake" and "CMake<lang>Compiler.cmake" to
save information detected about the system and compilers in use. The
method of detection and the exact results store varies across CMake
versions as things improve. This leads to problems when loading files
configured by a different version of CMake. Previously we ignored such
existing files only if the major.minor part of the CMake version
component changed, and depended on the CMakeCache.txt to tell us the
last version of CMake that wrote the files. This led to problems if the
user deletes the CMakeCache.txt or we add required information to the
files in a patch-level release of CMake (still a "feature point" release
by modern CMake versioning convention).
Ensure that we always have version-consistent platform information files
by storing them in a subdirectory named with the CMake version. Every
version of CMake will do its own system and compiler identification
checks even when a build tree has already been configured by another
version of CMake. Stored results will not clobber those from other
versions of CMake which may be run again on the same tree in the future.
Loaded results will match what the system and language modules expect.
Rename the undocumented variable CMAKE_PLATFORM_ROOT_BIN to
CMAKE_PLATFORM_INFO_DIR to clarify its purpose. The new variable points
at the version-specific directory while the old variable did not.
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Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block. This is no longer the preferred style.
Run the following shell code:
for c in else endif endforeach endfunction endmacro endwhile; do
echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
egrep -z -v 'Tests/CMakeTests/While-Endwhile-' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
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In --find-package mode we can't enable a language, since a lot of
stuff has not been set up, e.g. which make tool to use.
So disable enable_language() in this mode.
Alex
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This fixes the problem that otherwise Platforms/CYGWIN.cmake doesn't
know whether it should set WIN32 or not.
Now it uses always the current behaviour.
Alex
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Alex
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The same for print_link_flags(), it is now set_link_flags_var().
Both macros don't print anything anymore, this was only in the
beginning.
Alex
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Alex
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This file has been written today from scratch by Matthias Kretz
and it BSD-licensed.
Alex
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Alex
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If CMAKE_SIZEOF_VOID_P is not set from the outside, it checks for the
existance of /usr/lib64, and if it exists, SIZEOF_VOID_P is set to 8.
For multiarch, if this is debian and
CMAKE_${LANGUAGE}_LANGUAGE_ARCHITECTURE has not been set, it globs
for the files in /lib, and uses the first one which matches
CMAKE_LIBRARY_ARCHITECTURE_REGEX.
Alex
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Alex
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In find-package mode, cmake executes Modules/CMakeFindPackage.cmake,
which calls find_package(), and this is then evaluated in cmake.cxx,
which prints an appropriate message to stdout, so it can be used
e.g. in a normal Makefile:
$ /opt/cmake-HEAD/bin/cmake --find-package -DNAME=JPEG
-DCOMPILER_ID=GNU -DLANGUAGE=C -DMODE=EXIST
JPEG found.
$ /opt/cmake-HEAD/bin/cmake --find-package -DNAME=JPEG
-DCOMPILER_ID=GNU -DLANGUAGE=C -DMODE=COMPILE
$ /opt/cmake-HEAD/bin/cmake --find-package -DNAME=JPEG
-DCOMPILER_ID=GNU -DLANGUAGE=C -DMODE=LINK
-rdynamic -ljpeg
Alex
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