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Saad Shakil
Saad Shakil

Posted on • Edited on

nio4r "Failed to build gem native extension."

#rails #gem #nio4r #webdev

In an RoR project, bundle install was giving:

Installing nio4r 2.5.8 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
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The following commands fix this:

bundle config build.nio4r --with-cflags="-Wno-incompatible-pointer-types"
gem install nio4r -v 2.5.8 -- --with-cflags="-Wno-incompatible-pointer-types"
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