Module: Ryb::Ninja

Defined in:
lib/ryb/ninja.rb

Class Method Summary collapse

Class Method Details

.generate_build_file_for(project, opts = {}) ⇒ Object



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# File 'lib/ryb/ninja.rb', line 7

def self.generate_build_file_for(project, opts={})
  case Ryb.platform
    when :windows
      raise 'Unable to find Windows SDK.' unless Ryb::Windows.sdk?
      raise 'Unable to find Visual Studio.' unless Ryb::VisualStudio.installed?

      puts "Generating build.ninja..."
      ::Ninja::File.new "#{opts[:root]}/build.ninja" do
        variable 'root', opts[:root]
        variable 'built', opts[:built]

        # TODO(mtwilliams): Respect project.targets[:windows].sdk.
        variable 'WindowsSdkDir', Ryb::Windows.sdk
        variable 'VCInstallDir', Ryb::VisualStudio.install

        variable 'cl', "cl.exe"
        variable 'lib', "lib.exe"
        variable 'link', "link.exe"

        project.configurations.each do |_, config|
          [:windows].map{|target| project.targets[target]}.compact.each do |target|
            [:x86, :x86_64].map{|arch| project.architectures[arch]}.compact.each do |arch|
              triplet = "#{config.name}_#{target.name}_#{arch.name}"
              (project.applications + project.libraries).each do |buildable|
                name = "#{buildable.name.pretty||buildable.name.capitalize} (#{config.name.pretty||config.name.capitalize}) for #{target.name.pretty||target.name.capitalize} (#{arch.name.pretty||arch.name.capitalize})"
                puts " Adding '#{name}'..."
                quadruplet = "#{buildable.name}_#{triplet}"
                variable "#{quadruplet}_name", name
                variable "#{quadruplet}_suffix",
                         "#{config.suffix||''}#{target.suffix||''}#{arch.suffix||''}"
                defines = {}
                flags = {}
                if buildable.configurations[config.name]
                  defines = buildable.defines.merge(buildable.configurations[config.name].defines)
                  flags = buildable.flags.merge(buildable.configurations[config.name].flags)
                 else
                  defines = buildable.defines
                  flags = buildable.flags
                end
                defines = project.defines.merge(arch.defines.merge(target.defines.merge(config.defines.merge(defines))))
                flags = arch.flags.merge(target.flags.merge(config.flags.merge(flags)))
                # TODO(mtwilliams): Union paths after expansion.
                paths = {:includes => project.paths[:includes] | buildable.paths[:includes],
                         :libraries => project.paths[:libraries] | buildable.paths[:libraries],
                         :binaries => project.paths[:binaries] | buildable.paths[:binaries]}
                expand_path_variables = lambda {|path| path.gsub(/\$built/i, "${built}")}
                includes = paths[:includes].map(&expand_path_variables).map{|path| File.expand_path(path)}
                libraries = paths[:libraries].map(&expand_path_variables).map{|path| File.expand_path(path)}
                binaries = paths[:binaries].map(&expand_path_variables).map{|path| File.expand_path(path)}
                variable "#{quadruplet}_defines", defines.map{|name, value| "/D#{name}=#{value}"}.join(' ')
                cflags = []
                cflags.push("/I\"${WindowsSdkDir}/Include\" /I\"${VCInstallDir}/include\"")
                cflags.push('/arch:IA32') if arch.name == 'x86'
                if flags[:generate_debug_symbols]
                  cflags.push('/MDd /Zi')
                else
                  cflags.push('/MD')
                end
                cflags.push({:none => '/Od /RTCsu /fp:precise /fp:except',
                             :size => '/O1 /fp:fast /fp:except-',
                             :speed => '/Ox /fp:fast /fp:except-'}[flags[:optimization]||:none])
                includes.each{|includes_search_dir| cflags.push("/I\"#{includes_search_dir}\"")}
                ldflags = []
                if arch.name == 'x86'
                  ldflags.push('/machine:X86')
                  ldflags.push("/LIBPATH:\"${WindowsSdkDir}/Lib\" /LIBPATH:\"${VCInstallDir}/Lib\"")
                elsif arch.name == 'x86_64'
                  ldflags.push('/machine:X64')
                  ldflags.push("/LIBPATH:\"${WindowsSdkDir}/Lib/x64\" /LIBPATH:\"${VCInstallDir}/Lib/amd64\"")
                end
                ldflags.push('/DEBUG') if flags[:generate_debug_symbols]
                libraries.each{|libraries_search_dir| ldflags.push("/LIBPATH:\"#{libraries_search_dir}\"")}
                binaries.each{|binaries_search_dir| ldflags.push("/LIBPATH:\"#{binaries_search_dir}\"")}
                variable "#{quadruplet}_cflags", cflags.join(' ')
                variable "#{quadruplet}_ldflags", ldflags.join(' ')
                arflags = []
                variable "#{quadruplet}_arflags", arflags.join(' ')
                # TODO(mtwilliams): Refactor into cc, ld, and ar rules, using variables under build(s) for uncommonalities.
                rule "cc_#{quadruplet}",
                     "${cl} /nologo /c /showIncludes /favor:blend /GF /GR- /W4 ${#{quadruplet}_cflags} ${#{quadruplet}_defines} /Fo$out $in",
                     :dependencies => :msvc
                rule "ld_#{quadruplet}",
                     "${link} /nologo /manifest:no ${#{quadruplet}_ldflags} /OUT:$out $in"
                rule "ar_#{quadruplet}",
                     "${lib} /nologo ${#{quadruplet}_arflags} /OUT:$out $in"
                sources = buildable.files[:source].select{|file| /\.(c|cc|cpp)\z/.match(file)}
                outputs_to_inputs = Hash[sources.map{|source| ["${built}/obj/#{source.gsub(/\.[^.]+\z/,'')}.#{triplet}.obj", "${root}/#{source}"]}]
                build "cc_#{quadruplet}", outputs_to_inputs
                output = "#{buildable.name}${#{quadruplet}_suffix}"
                if buildable.is_a? Ryb::Application
                  build "ld_#{quadruplet}", "${built}/bin/#{output}.exe" => outputs_to_inputs.map{|object,_| object}
                  defaults "${built}/bin/#{output}.exe"
                elsif buildable.is_a? Ryb::Library
                  case buildable.linkage
                  when :static
                    build "ar_#{quadruplet}", "${built}/lib/#{output}.lib" => outputs_to_inputs.map{|object,_| object}
                  when :dynamic
                    # TODO(mtwilliams): Specify -DLL.
                    build "ld_#{quadruplet}", "${built}/bin/#{output}.dll" => outputs_to_inputs.map{|object,_| object}
                  end
                end
              end
            end
          end
        end
      end

      # TODO(mtwilliams): Generate shell and batch scripts, instead.
      puts "Generating Makefile..."
      ::File.open("#{opts[:root]}/Makefile", 'w') do |f|
        f.write "# This file was auto-generated by \"#{::File.basename($PROGRAM_NAME, ::File.extname($0))}\".\n"
        f.write "# Do not modify! Instead, modify the aforementioned program.\n\n"

        f.write "WindowsSdkDir := /#{Ryb::Windows.sdk.gsub(/\\/,'/').gsub(/\:/,'')}\n\n"
        f.write "VCInstallDir := /#{Ryb::VisualStudio.install.gsub(/\\/,'/').gsub(/\:/,'')}\n"

        f.write "# HACK: The Common7/IDE path might not exist in older versions of Microsoft Visual Studio.\n"
        f.write "CommonTools := $(shell readlink -f \"$(VCInstallDir)/../Common7\")\n\n"

        targets = []
        project.configurations.each do |_, config|
          [:windows].map{|target| project.targets[target]}.compact.each do |target|
            [:x86, :x86_64].map{|arch| project.architectures[arch]}.compact.each do |arch|
              triplet = "#{config.name}-#{target.name}-#{arch.name}"
              (project.applications + project.libraries).each do |buildable|
                quadruplet = "#{buildable.name}-#{triplet}"
                targets.push(quadruplet)
              end
            end
          end
        end

        f.write ".PHONY: all #{targets.join(' ')}\n"
        f.write "all: #{targets.join(' ')}\n\n"

        project.configurations.each do |_, config|
          [:windows].map{|target| project.targets[target]}.compact.each do |target|
            [:x86, :x86_64].map{|arch| project.architectures[arch]}.compact.each do |arch|
              triplet = [config.name, target.name, arch.name]
              (project.applications + project.libraries).each do |buildable|
                quadruplet = [buildable.name, triplet]
                case arch.name
                  when 'x86'
                    f.write "#{quadruplet.join('-')}: export PATH := $(WindowsSdkDir)/bin:$(CommonTools)/IDE:$(VCInstallDir)/bin:$(PATH)\n"
                  when 'x86_64'
                    f.write "#{quadruplet.join('-')}: export PATH := $(WindowsSdkDir)/bin/x64:$(CommonTools)/IDE:$(VCInstallDir)/bin/x86_amd64:$(VCInstallDir)/bin:$(PATH)\n"
                  end
                f.write "#{quadruplet.join('-')}:\n"
                suffix = "#{config.suffix||''}#{target.suffix||''}#{arch.suffix||''}"
                if buildable.is_a? Ryb::Application
                  f.write "\t@ninja #{opts[:built]}/bin/#{buildable.name}#{suffix}.exe\n\n"
                elsif buildable.is_a? Ryb::Library
                  case buildable.linkage
                  when :static
                    f.write "\t@ninja #{opts[:built]}/lib/#{buildable.name}#{suffix}.lib\n\n"
                  when :dynamic
                    f.write "\t@ninja #{opts[:built]}/bin/#{buildable.name}#{suffix}.dll\n\n"
                  end
                end
              end
            end
          end
        end
      end

      puts "Done."
    # when :macosx
    # when :linux
    # when :bsd
    else
      raise 'Unsupported platform!'
    end
end