Update instructions in build&test script & environment setup script

activate-salt-fm-env.sh

@@ -1,4 +1,8 @@
 #!/usr/bin/env bash
+# Sourec this file on UO machines to setup your SALT-FM development environment
+# `source activate-salt-fm-env.sh`
+# After this you can quickly configure, build, and test using `./build_and_test.sh`
+
 export SALT_ROOT=/storage/packages/salt-fm
 export PATH="$SALT_ROOT/base/tools/bin:$PATH"
 export PATH="$SALT_ROOT/opt/tau/x86_64/bin:$PATH"

build_and_test.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+# Quick script to configure, build and test SALT-FM
+# On Gilgamesh or other UO systems, you can load the SALT-FM stack/environment with:
+# `source activate-salt-fm-env.sh`
+
+set -o errexit
+set -o nounset
+set -o pipefile
+set -o verbose
+
+cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -Wdev -Wdeprecated -G Ninja -S . -B build
+cmake --build build --parallel 8 --verbose || cmake --build build --verbose
+( cd build && ctest --output-on-failure )