@echo off
rem ---------------------------------------------------------------------------
rem Builds qlclglwidget.dll natively on Windows with MSVC.
rem
rem Use this when the target Qt6 / libQt6Pas is an MSVC build (the official
rem Qt online-installer binaries are MSVC). A MinGW-built DLL cannot link
rem against MSVC Qt DLLs - the C++ ABIs are incompatible.
rem
rem How to run:
rem   1. Open "x64 Native Tools Command Prompt for VS" (vcvars64 environment).
rem   2. set QTDIR=C:\Qt\6.7.2\msvc2019_64     (your MSVC Qt kit)
rem   3. build-msvc.bat
rem
rem Output: ..\qlclglwidget.dll (put it next to the application executable).
rem ---------------------------------------------------------------------------

if "%QTDIR%"=="" (
  echo error: set QTDIR to your MSVC Qt kit first, e.g.:
  echo   set QTDIR=C:\Qt\6.7.2\msvc2019_64
  exit /b 1
)
if not exist "%QTDIR%\include\QtOpenGLWidgets" (
  echo error: %QTDIR%\include\QtOpenGLWidgets not found - is QTDIR an MSVC Qt6 kit?
  exit /b 1
)

cl /nologo /LD /EHsc /std:c++17 /permissive- /Zc:__cplusplus /MD /O2 ^
  /I"%QTDIR%\include" ^
  /I"%QTDIR%\include\QtCore" ^
  /I"%QTDIR%\include\QtGui" ^
  /I"%QTDIR%\include\QtWidgets" ^
  /I"%QTDIR%\include\QtOpenGL" ^
  /I"%QTDIR%\include\QtOpenGLWidgets" ^
  qlclglwidget.cpp /Fe:..\qlclglwidget.dll ^
  /link /LIBPATH:"%QTDIR%\lib" Qt6Widgets.lib Qt6OpenGLWidgets.lib Qt6Gui.lib Qt6Core.lib

if errorlevel 1 (
  echo build FAILED
  exit /b 1
)

del qlclglwidget.obj ..\qlclglwidget.exp ..\qlclglwidget.lib 2>nul
echo built ..\qlclglwidget.dll