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# -*- coding: us-ascii -*-
# frozen_string_literal: true
require 'mkmf'
if $mswin or $mingw or $cygwin
$CPPFLAGS << " -DYAML_DECLARE_STATIC"
end
yaml_source = with_config("libyaml-source-dir") || enable_config("bundled-libyaml", false)
unless yaml_source # default to pre-installed libyaml
pkg_config('yaml-0.1')
dir_config('libyaml')
unless find_header('yaml.h') && find_library('yaml', 'yaml_get_version')
yaml_source = true # fallback to the bundled source if exists
end
end
if yaml_source == true
# search the latest libyaml source under $srcdir
yaml_source = Dir.glob("#{$srcdir}/yaml{,-*}/").max_by {|n| File.basename(n).scan(/\d+/).map(&:to_i)}
unless yaml_source
download_failure = "failed to download libyaml source"
begin
require_relative '../../tool/extlibs.rb'
extlibs = ExtLibs.new(cache_dir: File.expand_path("../../tmp/download_cache", $srcdir))
unless extlibs.process_under($srcdir)
raise download_failure
end
rescue
# Implicitly captures Exception#cause. Newer rubies show it in the backtrace.
raise download_failure
end
yaml_source, = Dir.glob("#{$srcdir}/yaml-*/")
raise "libyaml not found" unless yaml_source
end
elsif yaml_source
yaml_source = yaml_source.gsub(/\$\((\w+)\)|\$\{(\w+)\}/) {ENV[$1||$2]}
end
if yaml_source
yaml_source = yaml_source.chomp("/")
yaml_configure = "#{File.expand_path(yaml_source)}/configure"
unless File.exist?(yaml_configure)
raise "Configure script not found in #{yaml_source.quote}"
end
puts("Configuring libyaml source in #{yaml_source.quote}")
yaml = "libyaml"
Dir.mkdir(yaml) unless File.directory?(yaml)
shared = $enable_shared || !$static
args = [
yaml_configure,
"--enable-#{shared ? 'shared' : 'static'}",
"--host=#{RbConfig::CONFIG['host'].sub(/-unknown-/, '-')}",
"CC=#{RbConfig::CONFIG['CC']}",
*(["CFLAGS=-w"] if RbConfig::CONFIG["GCC"] == "yes"),
]
puts(args.quote.join(' '))
unless system(*args, chdir: yaml)
raise "failed to configure libyaml"
end
inc = yaml_source.start_with?("#$srcdir/") ? "$(srcdir)#{yaml_source[$srcdir.size..-1]}" : yaml_source
$INCFLAGS << " -I#{yaml}/include -I#{inc}/include"
puts("INCFLAGS=#$INCFLAGS")
libyaml = "libyaml.#$LIBEXT"
$cleanfiles << libyaml
$LOCAL_LIBS.prepend("$(LIBYAML) ")
end
create_makefile 'psych' do |mk|
mk << "LIBYAML = #{libyaml}".strip << "\n"
mk << "LIBYAML_OBJDIR = libyaml/src#{shared ? '/.libs' : ''}\n"
mk << "OBJEXT = #$OBJEXT"
mk << "RANLIB = #{config_string('RANLIB') || config_string('NULLCMD')}\n"
end
# :startdoc:
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