configure

#!/usr/bin/env ruby
#
# Copyright 2009, Curtis Spencer.
#
# This configure script is based on Lloyd Hilaiel's configure script in yajl
# Copyright 2007-2009, Lloyd Hilaiel.
# 
require 'fileutils'
require 'optparse'

options = {}

OptionParser.new do |opts|
  opts.banner = "Usage: configure [options]"
  opts.on("-p", "--prefix PATH", "Set installation prefix") do |prefix|
    options[:prefix] = prefix
  end
  opts.on("-d","--debug", "Configure with debug options enabled") do |d|
    options[:debug] = d
  end
  opts.on_tail("-h", "--help", "Output usage summary") do 
    puts opts
    exit
  end
end.parse!

additional_cmake_options = []

if options[:debug]
  puts "== Generating Debug Configuration"
  additional_cmake_options << "-D CMAKE_BUILD_TYPE=Debug"
end

if options[:prefix]
  additional_cmake_options << "-DCMAKE_INSTALL_PREFIX='#{options[:prefix]}'"
end


puts "== Removing Old Build Files"
FileUtils.rm_rf("build")
FileUtils.rm_f("Makefile")
puts "== Running CMake in Build Directory"
FileUtils.mkdir("build")
FileUtils.cd("build") do 
  # Check for cmake's existence
  if (!system("cmake > /dev/null"))
    puts "The \"cmake\" program is required to configure pillowtalk.  It's"
    puts "available from most ports/packaging systems and http://cmake.org"
    exit 1
  end
  puts "cmake #{additional_cmake_options.join(' ')} .."
  if (!system("cmake #{additional_cmake_options.join(' ')} .."))
    exit 1
  end
end

# now generate a Makefile
puts "== Generating Makefile"
File.open("Makefile", "w+") do |f| 
  f.puts ".PHONY: all clean distclean install test distro"
  f.puts "all: distro"
  f.puts
  f.puts "distro:"
  f.puts "	@cd build && make"
  f.puts
  f.puts "doc:"
  f.puts "	@cd build && make doc"
  f.puts
  f.puts "test:"
  f.puts "	@cd build && make && make test"
  f.puts
  f.puts "clean:"  
  f.puts "	@cd build && make clean"
  f.puts
  f.puts "distclean:"  
  f.puts "	@rm -rf Makefile build"
  f.puts
  f.puts "install: all" 
  f.puts "	@cd build && make && make install"
  f.puts
end
puts "== Configuration complete"