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Add the dependency on the main swig input source file as a normal
DEPENDS option.  We cannot use MAIN_DEPENDENCY because if there are
multiple target languages then multiple custom commands would want to
use the same MAIN_DEPENDENCY, but at most one custom command may specify
a given source file as its MAIN_DEPENDENCY.  Exposed by a CMP0057
warning.

e3f84fc5 cpack: Fix CPACK_PACKAGING_INSTALL_PREFIX handling for archives (#14677)

ac14cbf0 Allow add_dependencies() on INTERFACE libraries (#15414)
817d31db Help: Format add_dependencies documentation

4d08e6b6 QtAutogen: Fix rcc rebuild with Ninja generator (#15459)

230f2d6e ExternalData: Add option to recursively match under directories
564c07f7 ExternalData: Parameterize internal file(GLOB) operation selection

b76b52c0 Xcode: Set ARCHS only when CMAKE_OSX_ARCHITECTURES is specified (#14736)
9e14a5de cmGlobalXCodeGenerator: Simplify ARCHS list with cmJoin

98a3b2e2 CPackWIX: Omit codepage conversion when internal encoding is already UTF-8.

e680d43d Fix an unused variable warning from scanbuild.
a4a1b729 Fix warnings from clang scanbuild.

Fix the case when the archive generator is used to package components
with an install prefix.

Revert commit v3.0.0-rc1~175^2~20 (add_dependencies: Disallow use with
INTERFACE_LIBRARY, 2013-12-25).  Teach our dependency analysis to
transitively follow INTERFACE target utility dependencies as was done or
IMPORTED targets in commit v2.8.6~127^2~1 (Allow add_dependencies() on
imported targets, 2010-11-19).  Extend the InterfaceLibrary test with a
case to cover header generation for a header-only INTERFACE library via
a custom target.

Add reStructuredText markup.

The rcc outputs are byproducts of the cmake_autogen rule, not outputs.
We still must run cmake_autogen on every run even if the rcc outputs
exist.  Ninja requires explicit byproduct specification, which is now
possible in CMake since commit v3.2.0-rc1~340^2~2 (Add an option for
explicit BYPRODUCTS of custom commands, 2014-11-13).  Revise the logic
introduced by commit v3.2.0-rc1~480^2 (QtAutogen: Regenerate qrc files
if their input changes, 2014-09-17) to specify byproducts explicitly.

Extend the ``DATA{Dir/,...}`` syntax with a new ``RECURSE:`` option
to enable recursive matching of associated files.  This will allow
an entire directory tree of data to be referenced at once.

Extend the _ExternalData_arg_find_files signature with an option to
specify the kind of file(GLOB) operation to be performed.  Set
CMP0009 to NEW so that GLOB_RECURSE does not follow symlinks.

Teach the Xcode generator that ONLY_ACTIVE_ARCH=YES means to use ARCHS,
and that the default of ONLY_ACTIVE_ARCH=NO means to use NATIVE_ARCH and
ignore ARCHS.  In the latter case there is no reason to generate ARCHS.

a704098d ExternalProject: fix the build command for generator overrides

86037915 CPackWIX: Add static_casts for XML_Parser.

dcf29800 FindMFC: Use if(DEFINED) to simplify condition (#15477)

a8e7a104 GNU: Do not use -isystem with gfortran

4a2ff2b7 curl: Never consider using Windows APIs on Cygwin

9c76ff01 QtDialog: Fix CMake packaging with CPack on OS X with Qt5.

The `binary_dir` variable is never set, so this is invalid. Instead, use
"." which all the other build commands use anyways. Also only set the
--config option if it is meaningful.

Our Windows API header checks are conditioned on if(NOT UNIX) but
libarchive checks HAVE_WINDOWS_H anyway so the result leaks into
the cache and influenes the curl build.  Set the check results to
false explicitly for curl when not on Windows to tolerate this.
Reported-by: Vyacheslav Karpukhin <Vyacheslav.Karpukhin@jetbrains.com>

"XML_Parser" in cmexpat is a typedef for void* while newer releases of
expat seem to use struct XML_ParserStruct *XML_Parser.

Add static_casts so that the build works with either variant.

The compiler documents that USE statements search for ".mod" files
in directories specified with -I, but not -isystem.
Reported-by: Hugh Sorby <h.sorby@auckland.ac.nz>

Replace an old hack of the form 'if("${VAR}" MATCHES "^${VAR}$")'
with the much simpler 'if(NOT DEFINED ${VAR})'.  This was exposed
by a CMP0054 warning.

1f289095 file(LOCK): Close file descriptor/handle when releasing a lock

The file lock functionality added in commit v3.2.0-rc1~297^2~1 (file:
Add LOCK subcommand to do file and directory locking, 2014-11-26) forgot
to close the lock file descriptors.  Eventually it was possible to run
out of file descriptors and locks could not longer be acquired.  Fix
this by closing the file descriptor or handle when we are done with it.
Also set the member back to the initial value from the constructor
to leave everything in a consistent state (useful for debugging).

Co-Author: Ruslan Baratov <ruslan_baratov@yahoo.com>

209c142f SunPro: Drop non-existent -KPIE flag