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* upstream-KWSys:
  KWSys 2016-07-15 (f396bf43)

Kitware Robot authored Jul 15, 2016 and Brad King committed Jul 18, 2016

Code extracted from:

    http://public.kitware.com/KWSys.git

at commit f396bf43fc8a3e475e703acb99d629d123dbd003 (master).

Upstream Shortlog
-----------------

Brad King (2):
      e43689db SystemTools: Factor out environment storage class
      2aa7dd82 SystemTools: Do not free buffer passed to putenv("A=") on Windows

Dāvis Mosāns (4):
      19c31914 SystemTools: Abstract environment storage character type
      61301786 SystemTools: Tweak GetEnv/PutEnv implementation layout
      85920d53 SystemTools: Teach GetEnv/PutEnv to use correct encoding on Windows
      f396bf43 SystemTools: Add HasEnv function

Brad King authored Jul 18, 2016 and Kitware Robot committed Jul 18, 2016

a6290cff VS: Add support for NATVIS files

Brad King authored Jul 18, 2016 and Kitware Robot committed Jul 18, 2016

86dd2427 Ninja: Do not force response files when no sysconf(3) limit is used

Brad King authored Jul 18, 2016 and Kitware Robot committed Jul 18, 2016

5ec17e61 Ninja: Generalize check for sysconf(3) call

Brad King authored Jul 18, 2016 and Kitware Robot committed Jul 18, 2016

0a6c227d FindGIF: Detect version from GIF 4.1.6 and above

Robert Dailey authored Jul 15, 2016 and Brad King committed Jul 15, 2016

Add an explicit `<Natvis>` element in VS project files for `*.natvis`
files.  These enable custom debug visualizers for project-specific
types.

Fixes #16043.

Raphael Kubo da Costa authored Jul 15, 2016 and Brad King committed Jul 15, 2016

Use `sysconf(_SC_ARG_MAX)` wherever `_SC_ARG_MAX` is available instead
of hard-coding an incomplete list of operating systems that implement
it.  In particular, it is available on BSD platforms that were not
previously listed.

Commit v3.6.0-rc1~174^2~1 (cmGlobalNinjaGenerator: Clarify logic for
forcing use of response files, 2016-04-06) started using negative
command line length values to represent forced use of response files but
forgot to update `calculateCommandLineLengthLimit()` accordingly.  Teach
it to return `0` instead of `-1` when no limit is computed from the
system to avoid forcing response files.
Reported-by: Raphael Kubo da Costa <rakuco@FreeBSD.org>

Ben Campbell authored Jul 13, 2016 and Brad King committed Jul 15, 2016

GIF 4.1.6 introduced version macros in the header file.  Use them
to get a full version.

Fixes #16196.

Brad King authored Jul 15, 2016 and Kitware Robot committed Jul 15, 2016

8a98cf64 Honor CMAKE_*_LINKER_FLAGS[_<CONFIG>]_INIT set in toolchain files
37d15c39 MSVC: Set all CMAKE_*_LINKER_FLAGS_INIT directly
55c884ed Embarcadero: Set all CMAKE_*_LINKER_FLAGS_INIT directly
aec3c79a Strip CMAKE_*_LINKER_FLAGS[_<CONFIG>] initializer whitespace

Brad King authored Jul 15, 2016 and Kitware Robot committed Jul 15, 2016

58677c32 FindPostgreSQL: Fix initialization of PostgreSQL_LIBRARIES

Brad King authored Jul 15, 2016 and Kitware Robot committed Jul 15, 2016

4db08807 CMake: Report whether generators support platforms
43a68a6d cmGlobalGeneratorFactory: Use CM_OVERRIDE for all derived classes
af0e1cd4 Make CMake version dirty state available to code
6a077b5d Make CMake version suffix available to code

Document these variables.

Change our convention for setting these variables from:

    set(CMAKE_EXE_LINKER_FLAGS_INIT "...")

to

    string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " ...")

so that any value previously set by a toolchain file will be used.

Tobias Hunger authored Jul 08, 2016 and Brad King committed Jul 14, 2016

Set `CMake_VERSION_IS_DIRTY` to 1 or 0 depending on whether the CMake
source tree is considered dirty or not.

Tobias Hunger authored Jul 01, 2016 and Brad King committed Jul 14, 2016

Make the string (e.g. "rc1" or "gSHA-dirty") available to the code.

Brad King authored Jul 14, 2016 and Kitware Robot committed Jul 14, 2016

9587011d Utilities/Release: Update Windows binary host path to CMake

Brad King authored Jul 14, 2016 and Kitware Robot committed Jul 14, 2016

73e9f36e FindOpenMP: Detect version (specification date) from compiler
8f1103c0 FindOpenMP: Cleanup all variables unconditionally
ec963f04 FindOpenMP: Improve documentation formatting

Brad King authored Jul 14, 2016 and Kitware Robot committed Jul 14, 2016

9b588b2b ExternalData: Hide security-sensitive details from output

Brad King authored Jul 14, 2016 and Kitware Robot committed Jul 14, 2016

2aadb02f QtIFW: Don't show component selection page if it don't need
53992808 QtIFW: process USE_LGPL when CMake_INSTALL_COMPONENTS
8ae035a5 CMake: install COMPONENT cmcldeps

Brad King authored Jul 14, 2016 and Kitware Robot committed Jul 14, 2016

2eec433f ExternalProject: Add support for multiple alternative URLs

Brad King authored Jul 14, 2016 and Kitware Robot committed Jul 14, 2016

36fc3a53 VS: Fix VS 2015 .vcxproj debug setting for v90 toolset (#15986)

Brad King authored Jul 14, 2016 and Kitware Robot committed Jul 14, 2016

35322226 CMakeParseImplicitLinkInfo: Exclude libclang_rt libraries

Avoid copying CMAKE_EXE_LINKER_FLAGS_INIT to the others.

Avoid copying CMAKE_EXE_LINKER_FLAGS_INIT to the others.

Sujin Philip authored Jul 13, 2016 and Brad King committed Jul 13, 2016

Port changes from VTK commit fda6a31cb9 (Added Improved FindOpenMP
module, 2015-04-23).  Improve use of try_compile to avoid needing
to pass OpenMP flags as libraries.

Do not disclose credentials when printing URIs used to fetch external resources.