From 5164e76ce01fc36833a7f5e6fb7b1ec2f55c2262 Mon Sep 17 00:00:00 2001
From: Omair Majid <omajid@redhat.com>
Date: Wed, 1 Aug 2018 12:02:53 -0400
Subject: [PATCH] Use the identified python when building
 System.Private.CoreLib (#19043)

build.sh and build.cmd contain logic to identify a working version of
python to use. System.Private.CoreLib ignores that and directly invokes
'python', which may not work, or even execute a different program.
---
 build.sh                                                 | 2 ++
 src/System.Private.CoreLib/System.Private.CoreLib.csproj | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/build.sh b/build.sh
index 091d6227caf..4002f2744c2 100755
--- a/build.sh
+++ b/build.sh
@@ -22,6 +22,8 @@ then
    exit 1
 fi
 
+export PYTHON
+
 usage()
 {
     echo "Usage: $0 [BuildArch] [BuildType] [-verbose] [-coverage] [-cross] [-clangx.y] [-ninja] [-configureonly] [-skipconfigure] [-skipnative] [-skipmscorlib] [-skiptests] [-stripsymbols] [-ignorewarnings] [-cmakeargs] [-bindir]"
diff --git a/src/mscorlib/System.Private.CoreLib.csproj b/src/mscorlib/System.Private.CoreLib.csproj
index 9a2fc681703..0a02d3cffdf 100644
--- a/src/mscorlib/System.Private.CoreLib.csproj
+++ b/src/mscorlib/System.Private.CoreLib.csproj
@@ -543,7 +543,7 @@
     <PropertyGroup>
       <CMakeDefinitionSaveFile>$(IntermediateOutputPath)..\cmake.definitions</CMakeDefinitionSaveFile>
     </PropertyGroup>
-    <Exec Command="python $(MSBuildThisFileDirectory)..\scripts\check-definitions.py &quot;$(CMakeDefinitionSaveFile)&quot; &quot;$(DefineConstants)&quot; &quot;$(IgnoreDefineConstants)&quot; " />
+    <Exec Command="&quot;$(PYTHON)&quot; $(MSBuildThisFileDirectory)..\scripts\check-definitions.py &quot;$(CMakeDefinitionSaveFile)&quot; &quot;$(DefineConstants)&quot; &quot;$(IgnoreDefineConstants)&quot; " />
   </Target>
   <PropertyGroup Condition="'$(BuildOS)' == 'Windows_NT'">
     <EnableDotnetAnalyzers Condition="'$(EnableDotnetAnalyzers)'==''">true</EnableDotnetAnalyzers>