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-rwxr-xr-xtool/rbinstall.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
index 2081a1f9d9..6ae73544ad 100755
--- a/tool/rbinstall.rb
+++ b/tool/rbinstall.rb
@@ -760,6 +760,7 @@ install?(:ext, :comm, :gem) do
spec = Dir.chdir(dir) {
Gem::Specification.load(File.basename(path))
}
+ next unless spec.platform == Gem::Platform::RUBY
spec.extension_dir = "#{extensions_dir}/#{spec.full_name}"
if File.directory?(ext = "#{gem_ext_dir}/#{spec.full_name}")
spec.extensions[0] ||= "-"