update build.bat

Author: treefrogframework

build.bat

@@ -8,13 +8,12 @@ rem
 set BASEDIR=%~dp0
 
 call "C:\Qt\6.11.1\msvc2022_64\bin\qtenv2.bat"
-rem call "C:\Qt\6.5.3\msvc2019_64\bin\qtenv2.bat"
 
 set ARCH=amd64
 set VSWHERE="%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe"
 set VCVARSBAT=""
 set VSVER=18 2022 2019
-set PATH=C:\Qt\Tools\CMake_64\bin;%PATH%
+
 
 if exist %VSWHERE% (
   for %%v in (%VSVER%) do (
@@ -38,6 +37,11 @@ if exist %VCVARSBAT% (
   exit
 )
 
+where cmake >nul 2>&1
+if ERRORLEVEL 1 (
+  set "PATH=C:\Qt\Tools\CMake_64\bin;%PATH%"
+)
+
 cd /D %BASEDIR%
 call compile_install.bat