configure: install python pip

Author: cirosantilli

configure

@@ -48,10 +48,9 @@ gcc-arm-linux-gnueabi \
 libgoogle-perftools-dev \
 protobuf-compiler \
 python-dev \
+python-pip \
 scons \
 "
-  # Generate graphs of config.ini under m5out.
-  pip install --user pydot
 fi
 command -v apt-get >/dev/null 2>&1 || {
   cat <<EOF
@@ -93,6 +92,10 @@ $mysudo apt-get install $y \
 if "$qemu"; then
   $mysudo apt-get build-dep $y qemu
 fi
+if "$gem5"; then
+  # Generate graphs of config.ini under m5out.
+  pip install --user pydot
+fi
 
 ## Submodules