BaseTools/PosixLike: honor pre-set PYTHONPATH

[mirror_edk2.git] / BaseTools / BinWrappers / PosixLike / Trim

diff --git a/BaseTools/BinWrappers/PosixLike/Trim b/BaseTools/BinWrappers/PosixLike/Trim
index 2cb8b86a9931690d9ea8f10a7df6c3bbe35e6afa..6c8dde5bec3eae83e0762f8f36eeb3ab279e86df 100755 (executable)
--- a/BaseTools/BinWrappers/PosixLike/Trim
+++ b/BaseTools/BinWrappers/PosixLike/Trim
@@ -1,5 +1,14 @@
 #!/usr/bin/env bash
 #python `dirname $0`/RunToolFromSource.py `basename $0` $*
-PYTHONPATH="`dirname $0`/../../Source/Python" \
-    python "`dirname $0`/../../Source/Python"/`basename $0`/`basename $0`.py $*
 
+# If a python2 command is available, use it in preference to python
+if command -v python2 >/dev/null 2>&1; then
+    python_exe=python2
+fi
+
+full_cmd=${BASH_SOURCE:-$0} # see http://mywiki.wooledge.org/BashFAQ/028 for a discussion of why $0 is not a good choice here
+dir=$(dirname "$full_cmd")
+exe=$(basename "$full_cmd")
+
+export PYTHONPATH="$dir/../../Source/Python${PYTHONPATH:+:"$PYTHONPATH"}"
+exec "${python_exe:-python}" "$dir/../../Source/Python/$exe/$exe.py" "$@"