ruby on rails - Installing mysql2 gem - HAVE_UINT (ushort, uint type redefinition errors) -

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yes, yet question installing mysql2 gem use in ruby on rails. it's error haven't been able find listed in question.

i've got 64 bit mysql , rvm installed on os x mountain lion. when trying install mysql2 gem, keep getting error make redefinition of ushort , uint in mysql2_ext.h. found file in couple of different places (apparently cached, because changing file did nothing when reran gem install mysql2 command) , found these lines in it:

#ifndef have_uint #define have_uint typedef unsigned short    ushort; typedef unsigned int    uint; #endif

it indeed trying redefine ushort , uint though still has them. how tell symbols defined?

turns out there's way specify cflags force recognize have_uint definition. not (apparently gem installation manages ignore environment variables set way):

sudo env cflags="-dhave_uint" gem install mysql2

see this question how this:

gem install mysql2 -- --with-cflags=\"-dhave_uint\"

and worked!


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