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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Fails to install on Ruby 3.0.2","articleBody":"```\r\n$ gem install bcrypt -v '3.1.16' --source 'https://rubygems.org/'\r\nBuilding native extensions. This could take a while...\r\nERROR:  Error installing bcrypt:\r\n        ERROR: Failed to build gem native extension.\r\n\r\n    current directory: /home/$USER/.rvm/gems/ruby-3.0.2/gems/bcrypt-3.1.16/ext/mri\r\n/home/$USER/.rvm/rubies/ruby-3.0.2/bin/ruby -I /home/$USER/.rvm/rubies/ruby-3.0.2/lib/ruby/3.0.0 -r ./siteconf20210811-1329082-xzlqe3.rb extconf.rb\r\ncreating Makefile\r\n\r\ncurrent directory: /home/$USER/.rvm/gems/ruby-3.0.2/gems/bcrypt-3.1.16/ext/mri\r\nmake DESTDIR\\= clean\r\n\r\ncurrent directory: /home/$USER/.rvm/gems/ruby-3.0.2/gems/bcrypt-3.1.16/ext/mri\r\nmake DESTDIR\\=\r\ncompiling bcrypt_ext.c\r\ncompiling crypt_blowfish.c\r\ngcc  -D__SKIP_GNU     -c -o x86.o x86.S\r\ncompiling crypt_gensalt.c\r\ncompiling wrapper.c\r\nwrapper.c:182:60: warning: ‘struct crypt_data’ declared inside parameter list will not be visible outside of this definition or declaration\r\n  182 | char *crypt_r(const char *key, const char *setting, struct crypt_data *data)\r\n      |                                                            ^~~~~~~~~~\r\ncc1: warning: unrecognized command line option ‘-Wno-self-assign’\r\ncc1: warning: unrecognized command line option ‘-Wno-parentheses-equality’\r\ncc1: warning: unrecognized command line option ‘-Wno-constant-logical-operand’\r\nlinking shared-object bcrypt_ext.so\r\n\r\ncurrent directory: /home/$USER/.rvm/gems/ruby-3.0.2/gems/bcrypt-3.1.16/ext/mri\r\nmake DESTDIR\\= install\r\nmake: /usr/bin/mkdir: Command not found\r\nmake: *** [Makefile:202: .sitearchdir.time] Error 127\r\n\r\nmake install failed, exit code 2\r\n\r\nGem files will remain installed in /home/$USER/.rvm/gems/ruby-3.0.2/gems/bcrypt-3.1.16 for inspection.\r\nResults logged to /home/$USER/.rvm/gems/ruby-3.0.2/extensions/x86_64-linux/3.0.0/bcrypt-3.1.16/gem_make.out\r\n```","author":{"url":"https://github.com/alecvn","@type":"Person","name":"alecvn"},"datePublished":"2021-08-11T09:46:47.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/256/bcrypt-ruby/issues/256"}