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-rw-r--r--README.md3
1 files changed, 3 insertions, 0 deletions
diff --git a/README.md b/README.md
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+++ b/README.md
@@ -97,6 +97,9 @@ This is what you need to do to compile and install Ruby:
6. Run `make`.
+ * On Mac, set RUBY\_CODESIGN environment variable with a signing identity.
+ It uses the identity to sign `ruby` binary. See also codesign(1).
+
7. Optionally, run '`make check`' to check whether the compiled Ruby
interpreter works well. If you see the message "`check succeeded`", your
ruby works as it should (hopefully).