bundle install problem: mysql.h is missing

Question

in my mac OSX 10.6 32 bit, I can install mysql2 gem quite easily, but not in mini mac 10.6 64bit server.

I have installed MySQL 5.5.11 in troublesome server, while i

Answer 1

The only way I could get this to work was to install the x64 version of mysql. I just used the .dmg located here http://dev.mysql.com/downloads/mysql/ and it worked like a charm. Wish I could get the 4 hours back it took to figure this out.

Answer 2

Posting this wherever I can--hopefully it will help someone and save them a lot of time.

I dug through 2 days worth of the internet and Stack Overflow, and it wasn't until I found this link and then starting working through this ticket for mysql2 that I actually resolved the issue.

With my setup (as explained in the ticket), the compiler switches of -Wno-null-conversion -Wno-unused-private-field would break and give me an error that wasn't exactly correct, which was:

mysql.h is missing. please check your installation of mysql and try again

Answer 3

I tried all the solutions posted here, but was not lucky. I reinstalled mysql with homebrew a couple of times and still no luck. Then I came across a blog post with a solution.

I edited the mysql_config file in /usr/local/Cellar/mysql/5.6.12/bin and removed the W-compiler options -Wno-null-conversion and -Wno-unused-private-field for cflags and cxxflags.

This solved the problem with gem install mysql2 and bundle install

Reference: http://www.randomactsofsentience.com/2013/05/gem-install-mysql2-missing-mysqlh-on-os.html

Answer 4

Verify that gcc is installed. If it isn't, you will get that same error message.

You can check the results/log file it mentions for more clues as to the cause.

Answer 5

This worked for me on my Mac OSX Lion:

sudo env ARCHFLAGS="-I/usr/local/include/mysql/mysql  -pipe -fPIC    -D_P1003_1B_VISIBLE -DSIGNAL_WITH_VIO_CLOSE -DSIGNALS_DONT_BREAK_READ -DIGNORE_SIGHUP_SIGQUIT  -DDONT_DECLARE_CXA_PURE_VIRTUAL" gem install mysql -- --with-mysql-dir=/usr/local/mysql --with-mysql-lib=/usr/local/lib/mysql/mysql --with-mysql-include=/usr/local/include/mysql/mysql --with-mysql-config=/usr/local/bin/mysql_config

This blog answered it.

Answer 6

I did a bundle install on a redmine repo and got the same error message :

mysql.h is missing. please check your installation of mysql and try again.

Running Fedora 16 64 bits, all I did was install mysql-devel (development package) from the distro rpm and the problem was solved!

So I think you could just

yum install mysql-devel

or apt-get the missing devel package.