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build: warn upon --use-largepages config option #31103

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build: warn upon --use-largepages config option #31103

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build: warn upon --use-largepages config option 
Emit a warning when the user configures with `--use-largepages` and/or
`--use-largepages-script-lld` informing them that the option is now
available as a Node.js runtime option once it is built.

Refs: #31063 (comment)
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Gabriel Schulhof committed Dec 27, 2019
commit 3d7f05464870a77929d3444a6d5c975a5ab99dad
7 changes: 7 additions & 0 deletions configure.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1067,6 +1067,13 @@ def configure_node(o):
else:
o['variables']['node_use_dtrace'] = 'false'

if options.node_use_large_pages or options.node_use_large_pages_script_lld:
warn('''The `--use-largepages` and `--use-largepages-script-lld` options
have no effect during build time. Support for mapping to large pages is
now a runtime option of Node.js. Run `node --use-largepages` or add
`--use-largepages` to the `NODE_OPTIONS` environment variable once
Node.js is built to enable mapping to large pages.''')

if options.no_ifaddrs:
o['defines'] += ['SUNOS_NO_IFADDRS']

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