1 files changed, 32 insertions, 10 deletions
diff --git a/ext/clogger_ext/extconf.rb b/ext/clogger_ext/extconf.rb
index 8cc8b5e..b327ada 100644
--- a/ext/clogger_ext/extconf.rb
+++ b/ext/clogger_ext/extconf.rb
@@ -1,12 +1,34 @@
-require 'mkmf'
+begin
+  require 'mkmf'
  
-if have_header('fcntl.h')
-  have_macro('F_GETFL', %w(fcntl.h))
-  have_macro('O_NONBLOCK', %w(unistd.h fcntl.h))
-end
+  # XXX let me know if this works for you...
+  if ! defined?(RUBY_VERSION) || RUBY_VERSION !~ /\A1\.[89]\./
+    raise "Invalid RUBY_VERSION for C extension"
+  end
+
+  have_header('ruby.h') or raise "ruby.h header not found!"
+
+  if have_header('fcntl.h')
+    have_macro('F_GETFL', %w(fcntl.h))
+    have_macro('O_NONBLOCK', %w(unistd.h fcntl.h))
+  end
  
-have_func('localtime_r', 'time.h') or abort "localtime_r needed"
-have_func('gmtime_r', 'time.h') or abort "gmtime_r needed"
-have_func('rb_str_set_len', 'ruby.h')
-dir_config('clogger_ext')
-create_makefile('clogger_ext')
+  have_func('localtime_r', 'time.h') or raise "localtime_r needed"
+  have_func('gmtime_r', 'time.h') or raise "gmtime_r needed"
+  have_func('rb_str_set_len', 'ruby.h')
+  dir_config('clogger_ext')
+  create_makefile('clogger_ext')
+rescue Object => err
+  warn "E: #{err.inspect}"
+  warn "Skipping C extension, pure Ruby version will be used instead"
+
+  # generate a dummy Makefile to fool rubygems installer
+  targets = %w(all static clean distclean realclean
+               install install-so install-rb install-rb-default
+               pre-install-rb pre-install-rb-default
+               site-install site-install-so site-install-rb)
+  File.open(File.dirname(__FILE__) << "/Makefile", "wb") do |fp|
+    fp.puts targets.join(' ') << ":"
+    fp.puts "\techo >&2 extension disabled"
+  end
+end