Simple C Project Rakefile

rakefile

OBJ_DIRECTORY = "obj"
BIN_DIRECTORY = "bin"
COMPILER      = 'g++'
FORMAT        = "cpp"

source_files = FileList["*.#{FORMAT}"]

OUTPUT_FILE = File.join "./", BIN_DIRECTORY, "main.exe"

directory OBJ_DIRECTORY
directory BIN_DIRECTORY

gpp_args = "-std=c++11 -Wall -Werror=format-security -Werror=implicit-function-declaration -I includes"

task :run => :build do
    sh OUTPUT_FILE
end

file OUTPUT_FILE => source_files.pathmap('obj/%X.o') do |task, args|
    Rake::Task[BIN_DIRECTORY].invoke # build binary folder if it doesn't exist
    sh "#{COMPILER} #{gpp_args} #{FileList.new task.sources} -o #{OUTPUT_FILE}"
end

rule(".o" => [
    Proc.new { |path| File.basename path.pathmap('%X') + ".#{FORMAT}" },
]) do |task, args|
    Rake::Task[OBJ_DIRECTORY].invoke # build object folder
    sh "#{COMPILER} #{gpp_args} -c #{task.source} -o #{task}"
end

task :clean do
    sh "rm -rf #{OBJ_DIRECTORY}/* #{BIN_DIRECTORY}/*"
end

task :default => :build
task :build => OUTPUT_FILE