Rails error installing mysql2 (mysql2-0.3.20)
I faced the same issue when installing mysql2-0.3.21 on Mac pro.
Below mentioned solution worked for me (run the below mentioned 3 commands in the terminal pointing to your project folder):
brew install mysqlgem install mysql2 -v '0.3.21' -- --srcdir=/usr/local/mysql/includebundle install
I just ran into this problem today. mysql got updated recently, so what worked for me was:
brew install mysql@5.6brew link mysql@5.6 --forcebundle installAlternatively, I did not try this solution, but it seems to have worked for other people.
This worked for me - macOS Catalina
brew uninstall mysqlgem uninstall mysql2brew install mysql@5.7brew link mysql@5.7 --forcegem install mysql2 -v '0.3.21'# Gemfilegem 'mysql2', '0.3.21'bundle update mysql2