From c45a52af36dbe399ec87b97db13812e20fa500d1 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 22 May 2017 04:10:51 +0000
Subject: downloader.rb: true symlink on cygwin

* tool/downloader.rb (Downloader.link_cache): on Cygwin, make true
  symlink only, which is provided by the OS.  as mingw/mswin ruby
  can't follow cygwin's pseudo symlink, it will fail on the same
  source tree.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58843 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 tool/downloader.rb | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

(limited to 'tool')

diff --git a/tool/downloader.rb b/tool/downloader.rb
index a8c47f02c7..0498e3f95c 100644
--- a/tool/downloader.rb
+++ b/tool/downloader.rb
@@ -225,15 +225,17 @@ class Downloader
   def self.link_cache(cache, file, name, verbose = false)
     return false unless cache and cache.exist?
     return true if cache.eql?(file)
-    begin
-      file.make_symlink(cache.relative_path_from(file.parent))
-    rescue SystemCallError
-    else
-      if verbose
-        $stdout.puts "made symlink #{name} to #{cache}"
-        $stdout.flush
+    if /cygwin/ !~ RUBY_PLATFORM or /winsymlink:nativestrict/ =~ ENV['CYGWIN']
+      begin
+        file.make_symlink(cache.relative_path_from(file.parent))
+      rescue SystemCallError
+      else
+        if verbose
+          $stdout.puts "made symlink #{name} to #{cache}"
+          $stdout.flush
+        end
+        return true
       end
-      return true
     end
     begin
       file.make_link(cache)
-- 
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