configure

#!/bin/bash

if [[ $# -gt 0 && ( "$1" == "-h" || "$1" == "--help" ) ]]; then
  echo "Usage: configure [debug | release]"
  echo
  echo "Configures the either a debug or release build."
  exit 1
fi

if [ ! -e build/ ]; then
  mkdir build
fi

# Determine the build type from the commandline (in case it is specified), and
# lowercase it.
build_type="$(tr '[:upper:]' '[:lower:]' <<< "$*")"

# By default, make a debug build in case no build type has been specified.
if [ "$build_type" = "" ]; then
  build_type="debug"
fi

echo "Configuring a $build_type build..."

# In case this is run as root, configure the installation prefix as /usr/local,
# otherwise, $HOME/.local.
if [ "$EUID" -eq 0 ]; then 
  install_prefix="/usr/local"
else
  install_prefix="$HOME/.local"
fi

# Upper the first character of the build type for use with CMake.
build_type="$(tr '[:lower:]' '[:upper:]' <<< ${build_type:0:1})${build_type:1}"

cd build && cmake ../ -GNinja \
  -DCMAKE_MAKE_PROGRAM="$(command -v ninja)" \
  -DCMAKE_EXPORT_COMPILE_COMMANDS=ON \
  -DCMAKE_INSTALL_PREFIX="$install_prefix" \
  -DCMAKE_BUILD_TYPE="$build_type"

echo
echo "Configuration complete, to build issue 'ninja -C build'"