From: kledzik
Date: October 3 2000 12:09am
Subject: compiling mySQL on Mac OS X
List-Archive: http://lists.mysql.com/internals/19
Message-Id: <200010030009.RAA05352@scv1.apple.com>
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I posted this to the 'internals' list a few weeks ago, but looks like =
the listserv was not working then.  Just a little more info on Darwin =
and Mac OS X.

-Nick

---------------------------------------
Although I work at Apple, I've been interested in trying to use mySQL =
for a personal project.  I download the sources for 3.23.24-beta, and =
after a lot of wrestling and got it running on Mac OS X (public beta).  =
I'd like to feed back my changes, so no one else will need to go through =
the porting pain. =20

First off, to clarify:  "Mac OS X" and "Mac OS X Server" and very =
different platforms.   mySQL currently does compile on Mac OS X Server =
(previously known as Rhapsody).  What I did was get it building on Mac =
OS X, which Apple recently had a public beta release.  There have been a =
few posts to this list in the past that have helped out.

1) strtol is built-in in Mac OS X.  mySQL builds its own implementation =
of the function into libmysqlclient.a.  The result is any client =
software fails on launch because strtol is defined twice.  Simply =
conditionalizing strtol.c did not work.  For some reason strto.c (which =
is included by strtol.c and strtoll.c etc) was compiled on its own and =
since if LONGLONG and UNSIGNED are undefined it compiles into strtol.  =
It seems like the correct fix is somewhere in the makefiles (strto.c =
should never be compiled on its own).  My fix was to change strto.c =
from:

 #define function longtype strtolXXX

to:

 #ifdef __APPLE_CC__
    #define function longtype strtolXXX
#else
    #define function longtype strtol
#endif


2) The file sql_cache.cc does not compile with Apple's gcc on Mac OS X.  =
I tracked this down to a compiler bug and reported it.  The compiler =
problem is a codegen problem with >32K static array initialization when =
the array contains C++ classes that use templates...  Since the cache =
array does not seem to be used, I changed  sql_cache.cc from:

  #define SQL_CACHE_LENGTH 300

to:
 #ifdef __APPLE_CC__
   #define SQL_CACHE_LENGTH 30
#else
   #define SQL_CACHE_LENGTH 300
#endif


3) Unlike Mac OS X Server, Mac OS X does support pthreads, but not the =
full set that mySQL expects.  I added the following to my_pthread.h. =
(based on another posting to this list). Note: __APPLE_CC__ is a =
conditional built in to the gcc compiler on Mac OS X.

diff -r mysql-3.23.24-beta/include/my_pthread.h =
mysql-3.23.24-beta.my/include/my_pthread.h
381a382,397
> #if __APPLE_CC__
>  #define pthread_condattr_init(A) pthread_dummy(0)
>  #define pthread_condattr_destroy(A) pthread_dummy(0)
>  #define pthread_cond_init( A, B ) pthread_cond_init( (A), 0 )
>  #define pthread_kill(A,B) pthread_dummy(0)
>  #define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C))
>  #undef  pthread_detach_this_thread
>  #define pthread_detach_this_thread() { pthread_t tmp=3Dpthread_self() =
; pthread_detach(tmp); }
>  #ifdef sigset
>   #undef sigset
>   #define sigset(A,B) signal((A),(B))
>  #endif
> #endif

4) In the configuration script, it's not clear to me how $ac_cv_prog_gcc =
is set up.  But Apple's gcc on Mac OS X does not support -O6 only -O. =20=


if test "$ac_cv_prog_gcc" =3D "yes"
then
  DEBUG_CFLAGS=3D"-g"
  DEBUG_OPTIMIZE_CC=3D"-O"
  OPTIMIZE_CFLAGS=3D"-O6"   ## <-- does not work on Mac OS X, change to =
-O
else
  DEBUG_CFLAGS=3D"-g"
  DEBUG_OPTIMIZE_CC=3D""
  OPTIMIZE_CFLAGS=3D"-O"
fi


5) To distingush between Mac OS X and Mac OS X Server in config.guess, =
the uname values are:

uname option         Mac OS X                  Mac OS X Server
=
----------------------+--------------------------+------------------------=
--------+
-s                             Darwin                         Rhapsody
-r                             1.2                                 5.6
-m                           Power Macintosh       Power Macintosh
=20
config.guess should be updated to recognize Mac OS X as a target.


-Nick