1.在rhel5.1上安装mysql-4.0.18， configure的时候报如下错误：

configure: error: This is a linux system and Linux threads was not
found. On linux Linuxthreads should be used. Please install Linuxthreads
(or a new glibc) and try again. See the Installation chapter in the
Reference Manual for more information.

看来需要新版本的glibc；configure的时候增加参数 --with-named-thread-libs="-lpthread" ；顺利通过。

2.不过make的时候又出错了
mysqld.o: In function `main':
mysqld.cc:(.text+0x3ee0): undefined reference to `my_fast_mutexattr'
mysqld.o:mysqld.cc:(.text+0x4143): more undefined references to `my_fast_mutexattr' follow
collect2: ld returned 1 exit status
make[4]: *** [mysqld] Error 1
make[4]: Leaving directory `/usr/local/src/mysql-4.0.26/sql'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/usr/local/src/mysql-4.0.26/sql'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/usr/local/src/mysql-4.0.26/sql'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/src/mysql-4.0.26'
make: *** [all] Error 2

在mysql-4.0.26/sql/sql_class.cc文件中的
#include
（约39行）语句下面写如下代码

#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
pthread_mutexattr_t my_fast_mutexattr;
#endif

make顺利通过；

3.我按照上面的步骤坐下来仍然报错，最后直接修改mysql-4.0.26/sql/sql_class.cc文件，添加pthread_mutexattr_t my_fast_mutexattr;，不知道有没有什么影响。