git/compat/vcbuild/vcpkg_install.bat
Jeff Hostetler dce7d29551 msvc: support building Git using MS Visual C++
With this patch, Git can be built using the Microsoft toolchain, via:

	make MSVC=1 [DEBUG=1]

Third party libraries are built from source using the open source
"vcpkg" tool set. See https://github.com/Microsoft/vcpkg

On a first build, the vcpkg tools and the third party libraries are
automatically downloaded and built. DLLs for the third party libraries
are copied to the top-level (and t/helper) directory to facilitate
debugging. See compat/vcbuild/README.

A series of .bat files are invoked by the Makefile to find the location
of the installed version of Visual Studio and the associated compiler
tools (essentially replicating the environment setup performed by a
"Developer Command Prompt"). This should find the most recent VS2015 or
VS2017 installation. Output from these scripts are used by the Makefile
to define compiler and linker pathnames and -I and -L arguments.

The build produces .pdb files for both debug and release builds.

Note: This commit was squashed from an organic series of commits
developed between 2016 and 2018 in Git for Windows' `master` branch.
This combined commit eliminates the obsolete commits related to fetching
NuGet packages for third party libraries. It is difficult to use NuGet
packages for C/C++ sources because they may be built by earlier versions
of the MSVC compiler and have CRT version and linking issues.

Additionally, the C/C++ NuGet packages that we were using tended to not
be updated concurrently with the sources.  And in the case of cURL and
OpenSSL, this could expose us to security issues.

Helped-by: Yue Lin Ho <b8732003@student.nsysu.edu.tw>
Helped-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-06-25 10:46:57 -07:00

81 lines
2.4 KiB
Batchfile

@ECHO OFF
REM ================================================================
REM This script installs the "vcpkg" source package manager and uses
REM it to build the third-party libraries that git requires when it
REM is built using MSVC.
REM
REM [1] Install VCPKG.
REM [a] Create <root>/compat/vcbuild/vcpkg/
REM [b] Download "vcpkg".
REM [c] Compile using the currently installed version of VS.
REM [d] Create <root>/compat/vcbuild/vcpkg/vcpkg.exe
REM
REM [2] Install third-party libraries.
REM [a] Download each (which may also install CMAKE).
REM [b] Compile in RELEASE mode and install in:
REM vcpkg/installed/<arch>/{bin,lib}
REM [c] Compile in DEBUG mode and install in:
REM vcpkg/installed/<arch>/debug/{bin,lib}
REM [d] Install headers in:
REM vcpkg/installed/<arch>/include
REM
REM [3] Create a set of MAKE definitions for the top-level
REM Makefile to allow "make MSVC=1" to find the above
REM third-party libraries.
REM [a] Write vcpkg/VCPGK-DEFS
REM
REM https://blogs.msdn.microsoft.com/vcblog/2016/09/19/vcpkg-a-tool-to-acquire-and-build-c-open-source-libraries-on-windows/
REM https://github.com/Microsoft/vcpkg
REM https://vcpkg.readthedocs.io/en/latest/
REM ================================================================
SETLOCAL EnableDelayedExpansion
@FOR /F "delims=" %%D IN ("%~dp0") DO @SET cwd=%%~fD
cd %cwd%
dir vcpkg\vcpkg.exe >nul 2>nul && GOTO :install_libraries
echo Fetching vcpkg in %cwd%vcpkg
git.exe clone https://github.com/Microsoft/vcpkg vcpkg
IF ERRORLEVEL 1 ( EXIT /B 1 )
cd vcpkg
echo Building vcpkg
powershell -exec bypass scripts\bootstrap.ps1
IF ERRORLEVEL 1 ( EXIT /B 1 )
echo Successfully installed %cwd%vcpkg\vcpkg.exe
:install_libraries
SET arch=x64-windows
echo Installing third-party libraries...
FOR %%i IN (zlib expat libiconv openssl libssh2 curl) DO (
cd %cwd%vcpkg
IF NOT EXIST "packages\%%i_%arch%" CALL :sub__install_one %%i
IF ERRORLEVEL 1 ( EXIT /B 1 )
)
:install_defines
cd %cwd%
SET inst=%cwd%vcpkg\installed\%arch%
echo vcpkg_inc=-I"%inst%\include">VCPKG-DEFS
echo vcpkg_rel_lib=-L"%inst%\lib">>VCPKG-DEFS
echo vcpkg_rel_bin="%inst%\bin">>VCPKG-DEFS
echo vcpkg_dbg_lib=-L"%inst%\debug\lib">>VCPKG-DEFS
echo vcpkg_dbg_bin="%inst%\debug\bin">>VCPKG-DEFS
EXIT /B 0
:sub__install_one
echo Installing package %1...
.\vcpkg.exe install %1:%arch%
IF ERRORLEVEL 1 ( EXIT /B 1 )
echo Finished %1
goto :EOF