add support for ruby1.6

1 files changed, 17 insertions, 4 deletions

diff --git a/extconf.rb b/extconf.rb
index 92dabdc..c4b5c81 100644
--- a/extconf.rb
+++ b/extconf.rb
@@ -15,6 +15,15 @@
 =end
 
 require "mkmf"
+require "rbconfig"
+
+ruby_version = Config::CONFIG['ruby_version'].to_f
+
+if ruby_version < 1.8
+  def message(*args)
+    printf(*args)
+  end
+end
 
 dir_config("openssl")
 dir_config("kerberos")
@@ -47,8 +56,8 @@ if $mingw
   have_library("gdi32")
 end
 result = have_header("openssl/ssl.h")
-result &&= %w[crypto libeay32].any? {|lib| have_library(lib, "OpenSSL_add_all_digests")}
-result &&= %w[ssl ssleay32].any? {|lib| have_library(lib, "SSL_library_init")}
+result &&= have_library("crypto", "OpenSSL_add_all_digests") || have_library("libeay32", "OpenSSL_add_all_digests")
+result &&= have_library("ssl", "SSL_library_init") || have_library("ssleay32", "SSL_library_init")
 if !result
   unless pkg_config("openssl") and have_header("openssl/ssl.h")
     message "=== Checking for required stuff failed. ===\n"
@@ -83,13 +92,17 @@ if try_cpp("#define FOO(a, ...) foo(a, ##__VA_ARGS__)\n int x(){FOO(1,2);}\n")
   $defs.push("-DHAVE_VA_ARGS_MACRO")
 end
 have_header("openssl/ocsp.h")
-have_struct_member("EVP_CIPHER_CTX", "flags", "openssl/evp.h")
+if ruby_version >= 1.8
+  have_struct_member("EVP_CIPHER_CTX", "flags", "openssl/evp.h")
+end
 
 message "=== Checking for Ruby features... ===\n"
 have_func("rb_obj_init_copy", "ruby.h")
 
 message "=== Checking done. ===\n"
-$distcleanfiles << "GNUmakefile" << "dep"
+if ruby_version >= 1.8
+	$distcleanfiles << "GNUmakefile" << "dep"
+end
 create_makefile("openssl")
 if /gcc/ =~ CONFIG["CC"]
   File.open("GNUmakefile", "w") {|f|