compile error with mysql 4.1.2-alpha

[cygwin]

I downloaded mysql 4.0.20 source (not the win version). It fails to 
compile with the following error:

=========================================================================
if gcc -DDEFAULT_BASEDIR=\"/usr/local\" -DDATADIR="\"/usr/local/var\"" 
-DDEFAULT_CHARSET_HOME="\"/usr/local\"" 
-DSHAREDIR="\"/usr/local/share/mysql\""
  -DHAVE_CONFIG_H -I. -I. -I.. -I./../include -I../include -I.. -I. 
-O3 -DDBUG_OFF   -MT my_thr_init.o -MD -MP -MF ".deps/my_thr_init.Tpo" \
   -c -o my_thr_init.o `test -f 'my_thr_init.c' || echo 
'./'`my_thr_init.c; \
then mv -f ".deps/my_thr_init.Tpo" ".deps/my_thr_init.Po"; \
else rm -f ".deps/my_thr_init.Tpo"; exit 1; \
fi
my_thr_init.c: In function `my_thread_global_init':
my_thr_init.c:72: error: `PTHREAD_MUTEX_ERRORCHECK_NP' undeclared (first 
use in this function)
my_thr_init.c:72: error: (Each undeclared identifier is reported only once
my_thr_init.c:72: error: for each function it appears in.)
make[2]: *** [my_thr_init.o] Error 1
make[2]: Leaving directory `/c/Documents and Settings/jeremy/My 
Documents/My Downloads/tmp/mysql-4.0.20/mysys'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/c/Documents and Settings/jeremy/My 
Documents/My Downloads/tmp/mysql-4.0.20'
make: *** [all] Error 2
=========================================================================

What is going on here? I can find PTHREAD_MUTEX_ERRORCHECK_NP in the 
linux pthread.h, but not cygwin.

cygwin wrote:

> 
> Hi,
> 
> i am trying to get DBI working with mysql...
> 
> I am trying to compile mysql, and get a compile error (see below). Has 
> anyone built a mysql recently?
> 
> regards,
> jeremy


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