BaseTools:Linux Python highest version check.

Linux Python highest version check.
The path of Python interpreter assign values to PYTHON_COMMAND

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

diff --git a/edksetup.sh b/edksetup.sh
index 06f95f4b9c278c154c43420770875057d7769526..bfa54ddf708883e18abb9ed51f8c4bdb11ae5f07 100755 (executable)
--- a/edksetup.sh
+++ b/edksetup.sh
@@ -115,11 +115,14 @@ function SetupPython()
 {    
   if [ $PYTHON3_ENABLE ] && [ $PYTHON3_ENABLE == TRUE ]
   then
-    for python in $(which python3)
+    if [ $origin_version ];then
+      origin_version=
+    fi
+    for python in $(whereis python3)
     do
       python=$(echo $python | grep "[[:digit:]]$" || true)
       python_version=${python##*python}
-      if [ -z "${python_version}" ];then
+      if [ -z "${python_version}" ] || (! command -v $python >/dev/null 2>&1);then
         continue
       fi
       if [ -z $origin_version ];then
@@ -137,14 +140,17 @@ function SetupPython()
   
   if [ -z $PYTHON3_ENABLE ] || [ $PYTHON3_ENABLE != TRUE ]
   then
-    for python in $(which python2)
+    if [ $origin_version ];then
+      origin_version=
+    fi
+    for python in $(whereis python2)
     do
       python=$(echo $python | grep "[[:digit:]]$" || true)
       python_version=${python##*python}
-      if [ -z "${python_version}" ];then
+      if [ -z "${python_version}" ] || (! command -v $python >/dev/null 2>&1);then
         continue
       fi
-      if [ -z $origin_version ] || [ $origin_version -ge 3 ]
+      if [ -z $origin_version ]
       then
         origin_version=$python_version
         export PYTHON=$python