💻 OS: mac m1 os

❓Error: bundle install 또는 rails db:create 사용할 때 발생하는 에러

macOS (m1)에서 bundle install을 할 때 생기는 에러이다. (while bundle install for mysql2 gem ruby on mac)

둘 중에 한 에러가 뜰 수 있다. (나는 둘 다 번갈아서 에러가 발생했다.)

ld: library not found for -lzstd (zstd 라이브러리를 찾지 못함)

ld: library not found for -lssl (ssl 라이브러리를 찾지 못함)

$ bundle install
(생략)
Installing mysql2 0.5.3 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory:
/Users/jyjeon/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/mysql2-0.5.3/ext/mysql2
/Users/jyjeon/.rbenv/versions/2.6.5/bin/ruby -I
/Users/jyjeon/.rbenv/versions/2.6.5/lib/ruby/2.6.0 -r
./siteconf20210928-15542-ky3uai.rb extconf.rb
--with-ldflags\=-L/opt/homebrew/Cellar/zstd/1.5.0/lib
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for rb_wait_for_single_fd()... yes
-----
Using mysql_config at /opt/homebrew/bin/mysql_config
-----
checking for mysql.h... yes
checking for errmsg.h... yes
checking for SSL_MODE_DISABLED in mysql.h... yes
checking for SSL_MODE_PREFERRED in mysql.h... yes
checking for SSL_MODE_REQUIRED in mysql.h... yes
checking for SSL_MODE_VERIFY_CA in mysql.h... yes
checking for SSL_MODE_VERIFY_IDENTITY in mysql.h... yes
checking for MYSQL.net.vio in mysql.h... yes
checking for MYSQL.net.pvio in mysql.h... no
checking for MYSQL_ENABLE_CLEARTEXT_PLUGIN in mysql.h... yes
checking for SERVER_QUERY_NO_GOOD_INDEX_USED in mysql.h... yes
checking for SERVER_QUERY_NO_INDEX_USED in mysql.h... yes
checking for SERVER_QUERY_WAS_SLOW in mysql.h... yes
checking for MYSQL_OPTION_MULTI_STATEMENTS_ON in mysql.h... yes
checking for MYSQL_OPTION_MULTI_STATEMENTS_OFF in mysql.h... yes
checking for my_bool in mysql.h... no

-----
Don't know how to set rpath on your system, if MySQL libraries are not in path
mysql2 may not load
-----
-----
Setting libpath to /opt/homebrew/Cellar/mysql/8.0.26/lib
-----
(생략)
make "DESTDIR=" clean
(생략)
ld: library not found for -lssl
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mysql2.bundle] Error 1

make failed, exit code 2
(생략)
An error occurred while installing mysql2 (0.5.3), and Bundler cannot
continue.

In Gemfile:
  mysql2

$ rails db:create
linking shared-object mysql2/mysql2.bundle
ld: library not found for -lzstd
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [mysql2.bundle] Error 1

make failed, exit code 2

이런 에러가 발생한다.

해결책은 bundle clean을 해주면 안 되는 경우가 있다. 그럴 경우 --force를 통해 해 준다.

bundle clean --force

brew uninstall mysql
brew install mysql

mysql이 깔려있을 경우 brew를 사용해서 삭제 후 재설치

1) ld: library not found for -lssl (ssl 라이브러리를 찾지 못함)

bundle config --local build.mysql2 "--with-cppflags=-I/usr/local/opt/openssl/include"

2) ld: library not found for -lzstd (zstd 라이브러리를 찾지 못함)

bundle config --local build.mysql2 "--with-ldflags=-L/opt/homebrew/Cellar/zstd/1.5.0/lib"

두 명령어 중 하나를 실행해주면 된다.

되지 않을 때는  sudo명령어를 사용해서 실행함.

gem install mysql2 -v '0.5.3' -- --with-opt-dir=$(brew --prefix openssl) --with-ldflags=-L/opt/homebrew/Cellar/zstd/1.5.0/lib

라이브러리 위치를 찾지 못해서 생기는 문제 같다.

출처

https://stackoverflow.com/questions/67840691/ld-library-not-found-for-lzstd-while-bundle-install-for-mysql2-gem-ruby-on-mac