cmake: support for building git on windows with msvc and clang.

This patch adds support for Visual Studio and Clang builds

The minimum required version of CMake is upgraded to 3.15 because
this version offers proper support for Clang builds on Windows.

Libintl is not searched for when building with Visual Studio or Clang
because there is no binary compatible version available yet.

NOTE: In the link options invalidcontinue.obj has to be included.
The reason for this is because by default, Windows calls abort()'s
instead of setting errno=EINVAL when invalid arguments are passed to
standard functions.
This commit explains it in detail:
4b623d80f73528a632576990ca51e34c333d5dd6

On Windows the default generator is Visual Studio,so for Visual Studio
builds do this:

cmake `relative-path-to-srcdir`

NOTE: Visual Studio generator is a multi config generator, which means
that Debug and Release builds can be done on the same build directory.

For Clang builds do this:

On bash
CC=clang cmake `relative-path-to-srcdir` -G Ninja
		-DCMAKE_BUILD_TYPE=[Debug or Release]

On cmd
set CC=Clang
cmake `relative-path-to-srcdir` -G Ninja
		-DCMAKE_BUILD_TYPE=[Debug or Release]

Signed-off-by: Sibi Siddharthan <sibisiddharthan.github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

0 files changed, 0 insertions, 0 deletions