Update install_prereqs.sh for individual use (#1197)

Our documentation indicates a user with sudo can run the install_prereqs.sh file. Turns out that the file is not complete enough to run on Ubuntu 18.04/20.04 independently. I updated the file to resolve the failures.

resolves #1191

tools/install_prereqs.sh

@@ -4,12 +4,20 @@
 
 set -e
 
-#install pip3, rocm-cmake, rocblas and miopen
-apt update && apt install -y python3-pip rocm-cmake rocblas miopen-hip openmp-extras
+export LC_ALL=C.UTF-8
+export LANG=C.UTF-8
+
+
+# Need pip3 and Python headers to build dependencies
+apt update && apt install -y python3-pip python3-dev cmake rocm-cmake rocblas miopen-hip openmp-extras
+
+# Needed for cmake to build various pip packages
+pip3 install setuptools wheel
 
 # install rbuild to build dependencies
 pip3 install https://github.com/RadeonOpenCompute/rbuild/archive/master.tar.gz
 
+
 PREFIX=/usr/local
 REQ_FILE_DIR=""
 if [ "$#" -ge 2 ]; then