Top Level Namespace

Defined Under Namespace

Modules: CharlockHolmes Classes: String

Instance Method Summary collapse

Instance Method Details

#libflag_to_filename(ldflag) ⇒ Object 



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# File 'ext/charlock_holmes/extconf.rb', line 78

def libflag_to_filename(ldflag)
  case ldflag
  when /\A-l(.+)/
    "lib#{Regexp.last_match(1)}.#{$LIBEXT}"
  end
end

#resolve_static_library(libflag, dirs) ⇒ Object 



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# File 'ext/charlock_holmes/extconf.rb', line 85

def resolve_static_library(libflag, dirs)
  filename = libflag_to_filename(libflag)

  dir = dirs.find { |path| File.exist?(File.join(path, filename)) }

  raise "Unable to find #{filename} in #{dirs}" unless dir

  File.join(dir, filename)
end

#substitute_static_libs(packages) ⇒ Object 



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# File 'ext/charlock_holmes/extconf.rb', line 95

def substitute_static_libs(packages)
  packages.each do |pkg|
    unless pkg_config(pkg)
      message = "        Unable to run `pkg-config \#{pkg}`.\n\n        Check that PKG_CONFIG_PATH includes \#{pkg}.pc (or unset it if it's already set).\n\n        Current environment:\n        PKG_CONFIG_PATH=\#{ENV['PKG_CONFIG_PATH']}\n      MSG\n\n      raise message\n    end\n  end\n\n  # First, find all the -l<lib> flags added by pkg-config. We want to drop\n  # these dynamically linked libraries and substitute them with the static libraries.\n  libflags = packages.map do |pkg|\n    pkg_config(pkg, 'libs-only-l')&.strip&.split(' ')\n  end.flatten.uniq\n\n  # To find where the static libraries live, we need to search the\n  # library paths given by the -L flag from pkg-config.\n  lib_paths = packages.map do |pkg|\n    include_path = pkg_config(pkg, 'libs-only-L')&.strip\n    include_path&.split(' ')&.map { |lib| lib.gsub(/^-L/, '') }\n  end.flatten.uniq\n\n  # Drop the -l<lib> flags and add in the static libraries.\n  new_libs = $libs.shellsplit\n  new_libs.reject! { |arg| libflags.include?(arg) }\n  libflags.each { |flag| new_libs << resolve_static_library(flag, lib_paths) }\n  $libs = new_libs.uniq.shelljoin\nend\n"