Greetings, I finally have taken the time to look at our nightly builds of scipy for win32 and noticed that specfun is not compiling--as some have reported here: http://www.scipy.org/site_content/mailman?fn=scipy-user/2004-January/002 457.html and a link to the threaded discussion is here: http://www.scipy.org/site_content/mailman?fn=scipy-user/2004-January/thr ead.html Specifically you get an 'internal compiler error' when you have -O3 set (using no optimization setting seems to work). I've tried it with gcc ~3.2 and it compiles fine but 3.2.3 and a 3.3.1 (that comes with cygwin) were not able to compile it. Since specfun.f is a rather large file it would be impossible for me to reduce this to a simple case for reporting to the g77 folks or finding a workaround. Does anyone (Travis O.?) want to take a stab at this? (It would stink to have to specify gcc 3.2 or below as a build requirement on windows.) Thanks, Travis BTW Here's what I get with gcc 3.3.1: ....<a bunch of warnings>... Lib\special\specfun\specfun.f: In subroutine `cgama': Lib\special\specfun\specfun.f:7786: warning: `y1' might be used uninitialized in this function Lib\special\specfun\specfun.f:7794: warning: `na' might be used uninitialized in this function Lib\special\specfun\specfun.f: In subroutine `aswfb': Lib\special\specfun\specfun.f:7871: warning: `sw' might be used uninitialized in this function Lib\special\specfun\specfun.f:7881: Internal compiler error in emit_swap_insn, a t reg-stack.c:990 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://www.mingw.org/bugs.shtml> for instructions. warning: build_py: package init file 'Lib\tests\__init__.py' not found (or not a regular file) warning: build_py: package init file 'c:\temp\2.1\scipy\Lib\cluster\tests\__init __.py' not found (or not a regular file) warning: build_py: package init file 'c:\temp\2.1\scipy\Lib\fftpack\tests\__init __.py' not found (or not a regular file) ...<more warnings>... ........................ Travis N. Vaught Enthought, Inc. (512)536-1057 http://www.enthought.com ........................