digest: common configurations

* ext/digest/digest_conf.rb (digest_conf): extract common
  configurations.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49563 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/ext/digest/digest_conf.rb b/ext/digest/digest_conf.rb
new file mode 100644
index 0000000000..f2cb1f36e8
--- /dev/null
+++ b/ext/digest/digest_conf.rb
@@ -0,0 +1,20 @@
+def digest_conf(name, hdr = name, funcs = nil)
+  unless with_config("bundled-#{name}")
+    dir_config("openssl")
+    pkg_config("openssl")
+    require File.expand_path('../../openssl/deprecation', __FILE__)
+    if have_library("crypto")
+      funcs ||= name.upcase
+      funcs = Array(funcs)
+      hdr = "openssl/#{hdr}.h"
+      if funcs.all? {|func| OpenSSL.check_func("#{func}_Transform", hdr)} &&
+         funcs.all? {|func| have_type("#{func}_CTX", hdr)}
+        $defs << "-D#{name.upcase}_USE_OPENSSL"
+        $objs << "#{name}ossl.#{$OBJEXT}"
+        return :ossl
+      end
+    end
+  end
+  $objs << "#{name}.#{$OBJEXT}"
+  return
+end