commit b95a79c928fc4a6135d91c0c553cb2a63cf15140
author Steve Dower <steve.dower@microsoft.com> Wed Mar 27 16:28:41 2019 -0700
committer GitHub <noreply@github.com> Wed Mar 27 16:28:41 2019 -0700
tree 47ca04409d9ad6c3f65676f4d88a16ad9063414f
parent d5a5a33f12b60129d57f9b423b77d2fcba506834

bpo-36245: Fix more empty environment variable checks (GH-12592)

PCbuild/get_externals.bat

diff --git a/PCbuild/get_externals.bat b/PCbuild/get_externals.bat
index cbeb5a1..887fdc9 100644
--- a/PCbuild/get_externals.bat
+++ b/PCbuild/get_externals.bat
@@ -2,8 +2,8 @@
 setlocal
 rem Simple script to fetch source for external libraries
 
-if "%PCBUILD%"=="" (set PCBUILD=%~dp0)
-if "%EXTERNALS_DIR%"=="" (set EXTERNALS_DIR=%PCBUILD%\..\externals)
+if NOT DEFINED PCBUILD (set PCBUILD=%~dp0)
+if NOT DEFINED EXTERNALS_DIR (set EXTERNALS_DIR=%PCBUILD%\..\externals)
 
 set DO_FETCH=true
 set DO_CLEAN=false