Install Boehm GC on OS X

Rakefile

# how to install boehm gc on OS X

task :clean do
  sh "rm -rf gc" if File.exists?("gc")
end

task :checkout do
  #sh "curl -O http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/gc-7.2alpha4.tar.gz"
  #sh "tar zxf gc-*.tar.gz && rm gc-*.tar.gz"
  #sh "mv gc-* gc"
  
  sh "cvs -d:pserver:anonymous@bdwgc.cvs.sourceforge.net:/cvsroot/bdwgc login"
  sh "cvs -z3 -d:pserver:anonymous@bdwgc.cvs.sourceforge.net:" +
    "/cvsroot/bdwgc co -P bdwgc"
  sh "mv bdwgc gc"
end

task :build do
  sh "cd gc && ./configure && make"
end

task :test_clean do
  sh "rm main libgc.dylib"
end

task :test_build do
  sh "cp gc/.libs/libgc.dylib ."
  sh "gcc -Igc/include main.c libgc.dylib -o main"
  sh "install_name_tool -change /usr/local/lib/libgc.1.dylib " +
    "@executable_path/libgc.dylib main"
end

task :test_run do
  sh "./main"
  
  puts "Done!"
end

task :default => [:clean, :checkout, :build,
  :test_clean, :test_build, :test_run]