class RbPlusPlus::Writers::ExtensionWriter
Writes out the code for building the extension. This writer takes care of building the extconf.rb file with the appropriate options.
Attributes
options[RW]
Options given from the extension
Public Instance Methods
write()
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# File lib/rbplusplus/writers/extension.rb, line 12 def write extconf = File.join(working_dir, "extconf.rb") inc_str = @options[:include_paths].flatten.uniq.map {|i| "-I#{i}"}.join(" ") inc_str += " " + @options[:cxxflags].flatten.join(" ") lib_path_str = @options[:library_paths].flatten.uniq.map {|i| "-L#{i}"}.join(" ") lib_str = @options[:libraries].flatten.uniq.map {|i| "-l#{i}"}.join(" ") lib_str += " " + @options[:ldflags].flatten.join(" ") File.open(extconf, "w+") do |file| file.puts <<-EOF require 'rubygems' require 'mkmf-rice' # Add the arguments to the linker flags. def append_ld_flags(flags) flags = [flags] unless flags.is_a?(Array) with_ldflags("\#{$LDFLAGS} \#{flags.join(' ')}") { true } end $CPPFLAGS += \" -I'#{working_dir}' #{inc_str}\" $LDFLAGS += \" #{lib_path_str} #{lib_str}\" if RUBY_PLATFORM =~ /darwin/ # In order to link the shared library into our bundle with GCC 4.x on OSX, we have to work around a bug: # GCC redefines symbols - which the -fno-common prohibits. In order to keep the -fno-common, we # remove the flat_namespace (we now have two namespaces, which fixes the GCC clash). Also, we now lookup # symbols in both the namespaces (dynamic_lookup). $LDSHARED_CXX.gsub!('suppress', 'dynamic_lookup') $LDSHARED_CXX.gsub!('-flat_namespace', '') append_ld_flags '-all_load' end create_makefile(\"#{builder.name}\") EOF end end