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-rw-r--r--lib/mkmf.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 055ed226ea..d99209e2d6 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -1308,6 +1308,10 @@ def depend_rules(depend)
line.gsub!(/\.o\b/, ".#{$OBJEXT}")
line.gsub!(/\$\((?:hdr|top)dir\)\/config.h/, $config_h) if $config_h
line.gsub!(%r"\$\(hdrdir\)/(?!ruby(?![^:;/\s]))(?=[-\w]+\.h)", '\&ruby/')
+ if $nmake && /\A\s*\$\(RM|COPY\)/ =~ line
+ line.gsub!(%r"[-\w\./]{2,}"){$&.tr("/", "\\")}
+ line.gsub!(/(\$\((?!RM|COPY)[^:)]+)(?=\))/, '\1:/=\\')
+ end
if /(?:^|[^\\])(?:\\\\)*\\$/ =~ line
(cont ||= []) << line
next