From b8cb88092fb440dd942ef592d08cdc8b3e4eeade Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@intel.com>
Date: Mon, 18 Apr 2016 23:33:24 -0300
Subject: [PATCH] Tools: install-prereqs-ubuntu: fix exporting PATH

Since we escape $PATH, we can't just try to export that way. Since PATH
is unset if we do this, we end up with things like :

./Tools/scripts/install-prereqs-ubuntu.sh: line 101: apt-cache: command
not found
---
 Tools/scripts/install-prereqs-ubuntu.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Tools/scripts/install-prereqs-ubuntu.sh b/Tools/scripts/install-prereqs-ubuntu.sh
index 1e4928b10c..ee3d3317ff 100755
--- a/Tools/scripts/install-prereqs-ubuntu.sh
+++ b/Tools/scripts/install-prereqs-ubuntu.sh
@@ -82,7 +82,7 @@ exportline="export PATH=$OPT/$ARM_ROOT/bin:\$PATH";
 grep -Fxq "$exportline" ~/.profile 2>/dev/null || {
     if maybe_prompt_user "Add $OPT/$ARM_ROOT/bin to your PATH [Y/n]?" ; then
         echo $exportline >> ~/.profile
-        $exportline
+        eval $exportline
     else
         echo "Skipping adding $OPT/$ARM_ROOT/bin to PATH."
     fi
@@ -92,7 +92,7 @@ exportline2="export PATH=$ARDUPILOT_ROOT/$ARDUPILOT_TOOLS:\$PATH";
 grep -Fxq "$exportline2" ~/.profile 2>/dev/null || {
     if maybe_prompt_user "Add $ARDUPILOT_ROOT/$ARDUPILOT_TOOLS to your PATH [Y/n]?" ; then
         echo $exportline2 >> ~/.profile
-        $exportline2
+        eval $exportline2
     else
         echo "Skipping adding $ARDUPILOT_ROOT/$ARDUPILOT_TOOLS to PATH."
     fi