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Instrumentation (NS)

Before running Instruments ¹, execute:

# Create NS "entitlement" for "task port" access, e.g. for debugger/profiler.
ENTITLEMENTS=entitlements.plist
cat > ${ENTITLEMENTS} << EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
"https://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>com.apple.security.get-task-allow</key>
    <true/>
  </dict>
</plist>
EOF

# Force-sign (-f) Emacs libraries and application with ad‐hoc identity (-s -).
codesign -s - -f --entitlements ${ENTITLEMENTS} \
         nextstep/Emacs.app/Contents/MacOS/libexec/* \
         nextstep/Emacs.app

# Quick-run Emacs, without loading any configuration.
emacs -Q

Footnotes:

To see standard output and error output, e.g. NSLog, click “+ Instrument” and pick “stdout/stderr”.