Updating the build script to work when python is installed to a path containing a space. (#15707)

Author: tannergooding

build.cmd

@@ -411,13 +411,13 @@ if /i "%__BuildNative%"=="1" (
 
     echo %__MsgPrefix%Laying out dynamically generated files consumed by the native build system
     echo %__MsgPrefix%Laying out dynamically generated Event test files and etmdummy stub functions
-    !PYTHON! -B -Wall  %__SourceDir%\scripts\genEventing.py --inc %__IntermediatesIncDir% --dummy %__IntermediatesIncDir%\etmdummy.h --man %__SourceDir%\vm\ClrEtwAll.man --nonextern || exit /b 1
+    "!PYTHON!" -B -Wall  %__SourceDir%\scripts\genEventing.py --inc %__IntermediatesIncDir% --dummy %__IntermediatesIncDir%\etmdummy.h --man %__SourceDir%\vm\ClrEtwAll.man --nonextern || exit /b 1
 
     echo %__MsgPrefix%Laying out dynamically generated EventPipe Implementation
-    !PYTHON! -B -Wall %__SourceDir%\scripts\genEventPipe.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate %__IntermediatesEventingDir%\eventpipe --nonextern || exit /b 1
+    "!PYTHON!" -B -Wall %__SourceDir%\scripts\genEventPipe.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate %__IntermediatesEventingDir%\eventpipe --nonextern || exit /b 1
 
     echo %__MsgPrefix%Laying out ETW event logging interface
-    !PYTHON! -B -Wall %__SourceDir%\scripts\genEtwProvider.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate %__IntermediatesIncDir% --exc %__SourceDir%\vm\ClrEtwAllMeta.lst || exit /b 1
+    "!PYTHON!" -B -Wall %__SourceDir%\scripts\genEtwProvider.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate %__IntermediatesIncDir% --exc %__SourceDir%\vm\ClrEtwAllMeta.lst || exit /b 1
 )
 
 if /i "%__DoCrossArchBuild%"=="1" (
@@ -431,13 +431,13 @@ if /i "%__DoCrossArchBuild%"=="1" (
 
     echo %__MsgPrefix%Laying out dynamically generated files consumed by the crossarch build system
     echo %__MsgPrefix%Laying out dynamically generated Event test files and etmdummy stub functions
-    !PYTHON! -B -Wall  %__SourceDir%\scripts\genEventing.py --inc !__CrossCompIntermediatesIncDir! --dummy !__CrossCompIntermediatesIncDir!\etmdummy.h --man %__SourceDir%\vm\ClrEtwAll.man --nonextern || exit /b 1
+    "!PYTHON!" -B -Wall  %__SourceDir%\scripts\genEventing.py --inc !__CrossCompIntermediatesIncDir! --dummy !__CrossCompIntermediatesIncDir!\etmdummy.h --man %__SourceDir%\vm\ClrEtwAll.man --nonextern || exit /b 1
 
     echo %__MsgPrefix%Laying out dynamically generated EventPipe Implementation
-    !PYTHON! -B -Wall %__SourceDir%\scripts\genEventPipe.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate !__CrossCompIntermediatesEventingDir!\eventpipe --nonextern || exit /b 1
+    "!PYTHON!" -B -Wall %__SourceDir%\scripts\genEventPipe.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate !__CrossCompIntermediatesEventingDir!\eventpipe --nonextern || exit /b 1
 
     echo %__MsgPrefix%Laying out ETW event logging interface
-    !PYTHON! -B -Wall %__SourceDir%\scripts\genEtwProvider.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate !__CrossCompIntermediatesIncDir! --exc %__SourceDir%\vm\ClrEtwAllMeta.lst || exit /b 1
+    "!PYTHON!" -B -Wall %__SourceDir%\scripts\genEtwProvider.py --man %__SourceDir%\vm\ClrEtwAll.man --intermediate !__CrossCompIntermediatesIncDir! --exc %__SourceDir%\vm\ClrEtwAllMeta.lst || exit /b 1
 )
 
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