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5.3 ./configure && make

5.2 Example Build Scripts

5.2.1 Example: Building a C Program

build do
  Environment.new do |env|
    env["CFLAGS"] << "-Wall"
    env.Program("program", glob("src/**/*.c"))
  end
end

5.2.2 Example: Building a D Program

build do
  Environment.new do |env|
    env["DFLAGS"] << "-Wall"
    env.Program("program", glob("src/**/*.d"))
  end
end

5.2.3 Example: Cloning an Environment

build do
  main_env = Environment.new do |env|
    env["CFLAGS"] = ["-DSOME_DEFINE", "-O3"]
    env["LIBS"] = ["SDL"]
    env.Program("program", glob("src/**/*.cc"))
  end

  debug_env = main_env.clone do |env|
    env["CFLAGS"] -= ["-O3"]
    env["CFLAGS"] += ["-g", "-O0"]
    env.Program("program-debug", glob("src/**/*.cc"))
  end
end

5.2.4 Example: Custom Builder

class GenerateFoo < Builder
  def run(options)
    target, cache = options.values_at(:target, :cache)
    cache.mkdir_p(File.dirname(target))
    File.open(target, "w") do |fh|
      fh.puts <<EOF
#define GENERATED 42
EOF
    end
    target
  end
end

build do
  Environment.new do |env|
    env.add_builder(GenerateFoo)
    env.GenerateFoo("foo.h", [])
    env.Program("a.out", glob("*.c"))
  end
end

5.2.5 Example: Using different compilation flags for some sources

build do
  Environment.new do |env|
    env["CFLAGS"] = ["-O3", "-Wall"]
    env.add_build_hook do |build_op|
      if build_op[:target] =~ %r{build/third-party}
        build_op[:vars]["CFLAGS"] -= ["-Wall"]
      end
    end
    env.Program("program", glob("**/*.cc"))
  end
end

5.2.6 Example: Creating a static library

build do
  Environment.new do |env|
    env.Library("mylib.a", glob("src/**/*.c"))
  end
end

5.2.7 Example: Creating a C++ parser source from a Yacc/Bison input file

build do
  Environment.new do |env|
    env.CFile("^/parser.tab.cc", "parser.yy")
  end
end
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5 Appendix		Table of ContentsNext »
5.3 ./configure && make