From f52c68a51082dffbcc36542db8b504c93d3645a1 Mon Sep 17 00:00:00 2001
From: Emily Hudson <emily33901@gmail.com>
Date: Tue, 13 Aug 2019 20:04:20 +0000
Subject: [PATCH] compiler: bootstrap with MSVC

Add make_msvc.bat to bootstrap with msvc and test it with travis
---
 .travis.yml    |  2 ++
 make_msvc.bat  | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 make_tests.bat | 19 ++++++++++++++-----
 3 files changed, 64 insertions(+), 5 deletions(-)
 create mode 100644 make_msvc.bat

diff --git a/.travis.yml b/.travis.yml
index 32f33ef892..b4f890906d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,6 +39,8 @@ script:
   - |
     if [[ "${TRAVIS_OS_NAME}" == "windows" ]]; then
       choco install openssl.light
+      echo "Testing msvc bootstrapping"
+      ./make_msvc.bat
       echo "Running make_tests.bat..."
       ./make_tests.bat
     fi
diff --git a/make_msvc.bat b/make_msvc.bat
new file mode 100644
index 0000000000..7871ff12ec
--- /dev/null
+++ b/make_msvc.bat
@@ -0,0 +1,48 @@
+@echo off
+
+set exiterror=0
+
+echo finding an MSVC installation
+
+for /f "usebackq tokens=*" %%i in (`"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -latest -products * -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property installationPath`) do (
+  set InstallDir=%%i
+)
+
+REM set up a devcmd
+
+if exist "%InstallDir%\Common7\Tools\vsdevcmd.bat" (
+  call "%InstallDir%\Common7\Tools\vsdevcmd.bat" -arch=x64 -host_arch=x64
+) else (
+  goto :nomsvc
+)
+
+echo fetch v.c
+curl -O https://raw.githubusercontent.com/vlang/vc/master/v.c
+
+echo build v.c with msvc
+cl.exe /w /volatile:ms /D_UNICODE /DUNICODE /Fo.v.c.obj /O2 /MD v.c user32.lib kernel32.lib advapi32.lib shell32.lib /link /NOLOGO /OUT:v2.exe /INCREMENTAL:NO
+
+if %ERRORLEVEL% GEQ 1 (
+   goto :compileerror
+)
+
+echo rebuild from source
+v2.exe -o v.exe compiler
+
+del .v.c.obj
+del v.c
+del v2.exe
+
+exit
+
+:nomsvc
+echo Cannot find an msvc installation
+goto :error
+
+:compileerror
+echo Failed to compile - Create an issue at 'https://github.com/vlang' and tag '@emily33901'!
+goto :error
+
+:error
+echo Exiting from error
+exit /b 1
diff --git a/make_tests.bat b/make_tests.bat
index 7b94074683..a0b3a247f2 100644
--- a/make_tests.bat
+++ b/make_tests.bat
@@ -1,5 +1,10 @@
 @echo off
 
+echo Cleanup
+del v.exe
+del v.c
+del v2.exe
+
 echo fetch v.c
 curl -O https://raw.githubusercontent.com/vlang/vc/master/v.c
 if %ERRORLEVEL% NEQ 0 goto :fail
@@ -13,12 +18,16 @@ echo build v using vc
 vc.exe -o v.exe compiler
 if %ERRORLEVEL% NEQ 0 goto :fail
 
-echo build v.msvc using v
-v.exe -os msvc -o v.msvc.exe compiler
+echo build vc.msvc using vc
+vc.exe -os msvc -o v.msvc.exe compiler
 if %ERRORLEVEL% NEQ 0 goto :fail
 
-echo build v.msvc.2 using v.msvc
-v.msvc.exe -os msvc -o v.msvc.2.exe compiler
+echo build v.msvc.3 using v
+v.exe -os msvc -o v.msvc.2.exe compiler
+if %ERRORLEVEL% NEQ 0 goto :fail
+
+echo build v.msvc.3 using v.msvc
+v.msvc.exe -os msvc -o v.msvc.3.exe compiler
 if %ERRORLEVEL% NEQ 0 goto :fail
 
 echo build v.gcc using v.msvc
@@ -56,4 +65,4 @@ echo fail
 exit /b 1
 
 :done
-echo pass
\ No newline at end of file
+echo pass