pthreads-w32-2-8-0-src.tar.gz
i386 323.6 KiB Tue Jun 23 2009 01:12
pthreads-w32-2.8.0-mingw32-dll.tar.gz i386 16.9 KiB Tue Jun 23 2009 01:12
mpfr-2.4.1-src.tar.lzma Platform-Independent 882.7 KiB Tue Jun 23 2009 01:12
mpfr-2.4.1-mingw32-dll.tar.gz i386 136.5 KiB Tue Jun 23 2009 01:11
gmp-4.2.4-src.tar.bz2 Platform-Independent 1.6 MiB Tue Jun 23 2009 01:11
gmp-4.2.4-mingw32-dll.tar.gz i386 267.8 KiB Tue Jun 23 2009 01:11

The problem is that pthreads don't contain the dll files: I don't know if that's right, 
but it's contained the headers, and also the lib files.
i have to download the dll file from other place.
also the mpfr package and gmp package just contain the dll files 
and don't contain the headers, it's so strange, is there anyone can give me an explaining?
Thanks. 
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        此致

罗勇刚
Yonggang Luo