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-rw-r--r--spec/rubyspec/optional/capi/spec_helper.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/spec/rubyspec/optional/capi/spec_helper.rb b/spec/rubyspec/optional/capi/spec_helper.rb
index 3d8cb296a6..5dcb6aceac 100644
--- a/spec/rubyspec/optional/capi/spec_helper.rb
+++ b/spec/rubyspec/optional/capi/spec_helper.rb
@@ -57,6 +57,10 @@ def compile_extension(name)
make = ENV['MAKE']
make ||= (RbConfig::CONFIG['host_os'].include?("mswin") ? "nmake" : "make")
+ if File.basename(make, ".*") == "nmake"
+ # suppress logo of nmake.exe to stderr
+ ENV["MAKEFLAGS"] = "l#{ENV["MAKEFLAGS"]}"
+ end
# Do not capture stderr as we want to show compiler warnings
output = IO.popen([make, "V=1", "DESTDIR=", close_others: false], &:read)