all: treat all files as binary, but check in .bat with CRLF
This is a followup to CL 96495.
It should be simpler and more robust to achieve .bat files having
CRLF line endings by treating it as a binary file, like all other
files, and checking it in with the desired CRLF line endings.
A test is used to check the entire Go tree, short of directories
starting with "." and named "testdata", for any .bat files that
have anything other than strict CRLF line endings. This will help
catch any accidental modifications to existing .bat files or check
ins of new .bat files.
Importantly, this is compatible with how Gerrit serves .tar.gz files,
making it so that CRLF line endings are preserved.
The Go project is supported on many different environments, some of
which may have limited git implementations available, or none at all.
Relying on fewer git features and special rules makes it easier to
have confidence in the exact content of all files. Additionally, Go
development started in Subversion, moved to Perforce, then Mercurial,
and now uses Git.¹ Reducing its reliance on git-specific features will
help if there will be another transition in the project's future.
There are only 5 .bat files in the entire Go source tree, so a new one
being added is a rare event, and we prefer to do things in Go instead.
We still have the option of improving the experience for developers by
adding a pre-commit converter for .bat files to the git-codereview tool.
¹ https://groups.google.com/d/msg/golang-dev/sckirqOWepg/YmyT7dWJiocJ
Fixes #39391.
For #37791.
Change-Id: I6e202216322872f0307ac96f1b8d3f57cb901e6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/236437
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-06-03 22:35:09 -06:00
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:: Copyright 2012 The Go Authors. All rights reserved.
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:: Use of this source code is governed by a BSD-style
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:: license that can be found in the LICENSE file.
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:: Environment variables that control make.bat:
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::
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:: GOROOT_FINAL: The expected final Go root, baked into binaries.
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:: The default is the location of the Go tree during the build.
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::
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:: GOHOSTARCH: The architecture for host tools (compilers and
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:: binaries). Binaries of this type must be executable on the current
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:: system, so the only common reason to set this is to set
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:: GOHOSTARCH=386 on an amd64 machine.
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::
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:: GOARCH: The target architecture for installed packages and tools.
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::
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:: GOOS: The target operating system for installed packages and tools.
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::
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:: GO_GCFLAGS: Additional go tool compile arguments to use when
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:: building the packages and commands.
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::
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:: GO_LDFLAGS: Additional go tool link arguments to use when
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:: building the commands.
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::
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:: CGO_ENABLED: Controls cgo usage during the build. Set it to 1
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:: to include all cgo related files, .c and .go file with "cgo"
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:: build directive, in the build. Set it to 0 to ignore them.
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::
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:: CC: Command line to run to compile C code for GOHOSTARCH.
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:: Default is "gcc".
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::
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:: CC_FOR_TARGET: Command line to run compile C code for GOARCH.
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:: This is used by cgo. Default is CC.
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::
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:: FC: Command line to run to compile Fortran code.
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:: This is used by cgo. Default is "gfortran".
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@echo off
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:: Keep environment variables within this script
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:: unless invoked with --no-local.
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if x%1==x--no-local goto nolocal
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if x%2==x--no-local goto nolocal
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if x%3==x--no-local goto nolocal
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if x%4==x--no-local goto nolocal
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setlocal
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:nolocal
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set GOENV=off
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set GOBUILDFAIL=0
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set GOFLAGS=
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set GO111MODULE=
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if exist make.bat goto ok
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echo Must run make.bat from Go src directory.
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goto fail
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:ok
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:: Clean old generated file that will cause problems in the build.
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del /F ".\pkg\runtime\runtime_defs.go" 2>NUL
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:: Set GOROOT for build.
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cd ..
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set GOROOT_TEMP=%CD%
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set GOROOT=
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cd src
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set vflag=
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if x%1==x-v set vflag=-v
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if x%2==x-v set vflag=-v
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if x%3==x-v set vflag=-v
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if x%4==x-v set vflag=-v
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if not exist ..\bin\tool mkdir ..\bin\tool
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:: Calculating GOROOT_BOOTSTRAP
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if not "x%GOROOT_BOOTSTRAP%"=="x" goto bootstrapset
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for /f "tokens=*" %%g in ('where go 2^>nul') do (
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if "x%GOROOT_BOOTSTRAP%"=="x" (
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for /f "tokens=*" %%i in ('%%g env GOROOT 2^>nul') do (
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if /I not %%i==%GOROOT_TEMP% (
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set GOROOT_BOOTSTRAP=%%i
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)
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)
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)
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)
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if "x%GOROOT_BOOTSTRAP%"=="x" set GOROOT_BOOTSTRAP=%HOMEDRIVE%%HOMEPATH%\Go1.4
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:bootstrapset
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if not exist "%GOROOT_BOOTSTRAP%\bin\go.exe" goto bootstrapfail
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set GOROOT=%GOROOT_TEMP%
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set GOROOT_TEMP=
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echo Building Go cmd/dist using %GOROOT_BOOTSTRAP%
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if x%vflag==x-v echo cmd/dist
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setlocal
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set GOROOT=%GOROOT_BOOTSTRAP%
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set GOOS=
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set GOARCH=
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set GOBIN=
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set GO111MODULE=off
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"%GOROOT_BOOTSTRAP%\bin\go.exe" build -o cmd\dist\dist.exe .\cmd\dist
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endlocal
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if errorlevel 1 goto fail
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.\cmd\dist\dist.exe env -w -p >env.bat
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if errorlevel 1 goto fail
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call env.bat
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del env.bat
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if x%vflag==x-v echo.
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if x%1==x--dist-tool goto copydist
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if x%2==x--dist-tool goto copydist
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if x%3==x--dist-tool goto copydist
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if x%4==x--dist-tool goto copydist
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set buildall=-a
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if x%1==x--no-clean set buildall=
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if x%2==x--no-clean set buildall=
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if x%3==x--no-clean set buildall=
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if x%4==x--no-clean set buildall=
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if x%1==x--no-banner set buildall=%buildall% --no-banner
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if x%2==x--no-banner set buildall=%buildall% --no-banner
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if x%3==x--no-banner set buildall=%buildall% --no-banner
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if x%4==x--no-banner set buildall=%buildall% --no-banner
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:: Run dist bootstrap to complete make.bash.
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:: Bootstrap installs a proper cmd/dist, built with the new toolchain.
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:: Throw ours, built with Go 1.4, away after bootstrap.
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.\cmd\dist\dist.exe bootstrap %vflag% %buildall%
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if errorlevel 1 goto fail
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del .\cmd\dist\dist.exe
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goto end
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:: DO NOT ADD ANY NEW CODE HERE.
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:: The bootstrap+del above are the final step of make.bat.
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:: If something must be added, add it to cmd/dist's cmdbootstrap,
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:: to avoid needing three copies in three different shell languages
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:: (make.bash, make.bat, make.rc).
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:copydist
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mkdir "%GOTOOLDIR%" 2>NUL
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copy cmd\dist\dist.exe "%GOTOOLDIR%\"
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goto end
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:bootstrapfail
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echo ERROR: Cannot find %GOROOT_BOOTSTRAP%\bin\go.exe
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echo Set GOROOT_BOOTSTRAP to a working Go tree ^>= Go 1.4.
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:fail
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set GOBUILDFAIL=1
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if x%GOBUILDEXIT%==x1 exit %GOBUILDFAIL%
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:end
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