Would this suffice for adding a fall back option to Installer? It also
requires that 'extensions_fallback' be added to the gemspec.
# from installer.rb
def build_extensions
return if @spec.extensions.empty?
say "Building native extensions. This could take a while..."
start_dir = Dir.pwd
dest_path = File.join @gem_dir, @spec.require_paths.first
ran_rake = false # only run rake once
@spec.extensions.each do |extension|
break if ran_rake
results = []
builder = case extension
when /extconf/ then
Gem::Ext::ExtConfBuilder
when /configure/ then
Gem::Ext::ConfigureBuilder
when /rakefile/i, /mkrf_conf/i then
ran_rake = true
Gem::Ext::RakeBuilder
else
results = ["No builder for extension '#{extension}'"]
nil
end
begin
Dir.chdir File.join(@gem_dir, File.dirname(extension))
results = builder.build(extension, @gem_dir, dest_path, results)
rescue => ex
results = results.join "\n"
File.open('gem_make.out', 'wb') { |f| f.puts results }
# ADDED IF CONDITION HERE
if @spec.extensions_fallback
message = <<-EOF
WARNING: Failed to build gem native extension.
#{results}
Results logged to #{File.join(Dir.pwd, 'gem_make.out')}
This Gem has a pure-ruby fallback. You can still proceed to use this
package without the native extension.
EOF
else
message = <<-EOF
ERROR: Failed to build gem native extension.
#{results}
Gem files will remain installed in [EMAIL PROTECTED] for inspection.
Results logged to #{File.join(Dir.pwd, 'gem_make.out')}
EOF
raise ExtensionBuildError, message
end
ensure
Dir.chdir start_dir
end
end
end
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