Document these variables.

Change our convention for setting these variables from:

    set(CMAKE_C_FLAGS_INIT "...")

to

    string(APPEND CMAKE_C_FLAGS_INIT " ...")

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

Automate the conversion with:

    sed -i 's/set *(\(CMAKE_\(C\|CXX\|Fortran\|RC\|ASM\|${[^}]\+}\)_FLAGS\(_[^_]\+\)\?_INIT \+"\)/string(APPEND \1 /' \
      Modules/Compiler/*.cmake Modules/Platform/*.cmake

and follow up with some manual fixes (e.g. to cases that already
meant to append).  Also revert the automated changes to contexts
that are not protected from running multiple times.

Migrate from the old `<os>-<cc>.cmake` layout to the modern
`<os>-<id>-<lang>.cmake` layout.  Keep settings common to C and C++ in a
`Windows-OpenWatcom.cmake` helper module with an include blocker.
For now just add both C and CXX settings in the helper module.

Refactor options out of `Modules/Compiler/Intel-{ASM,C,CXX,Fortran}.cmake`
into a common helper in `Modules/Compiler/Intel.cmake`.  Condition
them to be used only on non-Windows hosts where the Intel compiler
is GNU-like instead of MSVC-like.

Previously this worked only because the options were later overridden
by `Modules/Platform/Windows-Intel*.cmake`, but it is cleaner to not
set the options in the first place.

Teach `Modules/Platform/Windows-MSVC.cmake` not to use MSVC options
for Fortran.  We use the `__windows_compiler_msvc` for the Intel
Fortran compiler on Windows for other settings, but we do not want
the flags.

Previously this worked only because the options were later overridden
by `Modules/Platform/Windows-Intel*.cmake`, but it is cleaner to not
set the options in the first place.

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

a77d597b clang-format.bash: Fix filter-branch example documentation

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

73a3c0cd cmake-gui: Add build option to use Qt5 xcb plugin statically

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

c05d240e Help: Document CMAKE_TRY_COMPILE_PLATFORM_VARIABLES example
dab3ccf2 InstallRequiredSystemLibraries: Document UCRT option use case

Inside `git filter-branch --tree-filter` we must format all tracked
files because formatting of the tree for each commit is independent
from earlier commits.

This will enable builds against a static Qt5.

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

d582c23a try_compile: Add policy CMP0066 to honor CMAKE_<LANG>_FLAGS_<CONFIG>

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

b5ec5b09 Avoid using KWSys auto_ptr by adopting it ourselves

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

60212979 Merge branch 'upstream-liblzma' into update-liblzma
e4d39146 liblzma 2014-12-21 (265e5ffb)
d4f52404 liblzma: Revise update script to get version 5.0.8
bf969198 Merge branch 'upstream-liblzma' into update-liblzma
ca4276e4 liblzma: Remove CMake-specific README
d38a37ea liblzma 2013-06-30 (b69900ed)
ec8f744a Add script to update liblzma from upstream

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

4e8480db cmTypeMacro: mark overridden functions with CM_OVERRIDE

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

3f77655d CM_OVERRIDE: fix feature test for clang

Suggested-by: Hendrik Sattler <post@hendrik-sattler.de>

Suggested-by: Hendrik Sattler <post@hendrik-sattler.de>

* upstream-liblzma:
  liblzma 2014-12-21 (265e5ffb)

liblzma upstream authored 10 years ago and Brad King committed 8 years ago

Code extracted from:

    http://git.tukaani.org/xz.git

at commit 265e5ffb70d9c175b424621576294d28807efd9b (v5.0.8).

We will now manage the liblzma source tree updates using
the `Utilities/Scripts/update-liblzma.bash` script.  Drop
the README that covered the old method.

liblzma upstream authored 11 years ago and Brad King committed 8 years ago

Code extracted from:

    http://git.tukaani.org/xz.git

at commit b69900ed0b2f914fc6c0a180dcb522dbe5b80ea7 (v5.0.5).

Replace use of cmsys::auto_ptr with a CM_AUTO_PTR macro that maps to
our own implementation adopted from the KWSys auto_ptr implementation.
Later we may be able to map CM_AUTO_PTR to std::auto_ptr on compilers
that do not warn about it.

Automate the client site conversions:

    git grep -l auto_ptr -- Source/ | grep -v Source/kwsys/ | xargs sed -i \
      's|cmsys::auto_ptr|CM_AUTO_PTR|;s|cmsys/auto_ptr.hxx|cm_auto_ptr.hxx|'

In the `try_compile` source file signature we propagate the caller's
value of `CMAKE_<LANG>_FLAGS` into the test project.  Extend this to
propagate `CMAKE_<LANG>_FLAGS_<CONFIG>` too instead of always using the
default value in the test project.  This will be useful, for example, to
allow the MSVC runtime library to be changed (e.g. `-MDd` => `-MTd`).
However, some projects may currently depend on this not being done,
so we need to activate the behavior using a policy.

This change was originally made by commit v3.6.0-rc1~160^2 (try_compile:
Honor CMAKE_<LANG>_FLAGS_<CONFIG> changes, 2016-04-11) but without the
policy and so had to be reverted during the 3.6 release candidate cycle.

Fixes #16174.

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

a9252441 Tests: Run clang-format on GenerateExportHeader code

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

f05f5b01 cmliblzma: always build as static library

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

843402b0 GenerateExportHeader: Add option to specify custom content

Brad King authored 8 years ago and Kitware Robot committed 8 years ago

943fe6e3 Revert "try_compile: Honor CMAKE_<LANG>_FLAGS_<CONFIG> changes"

Clang refuses to default initialize an instance of a class that does not
have a default constructor.  Fix the check by adding default
constructors.  Don't use brace initialization like it is proposed in the
error message.  We want to test the override support independent from
the support for brace initialization.