I try Mapserver 5.6.4 on Linux.
I've compiled Mapserver ,then put it on /cgi-bin/ direcotry. I tried to access "http://localhost/cgi-bin/mapserv", but "500: Internal Server Error" was shown.
I saw error point, and I guessed that msEvalRegex() didn't work. So I commented out mapfile.c codes of between 5190 lines and 5202 lines. ( if(getenv("MS_MAPFILE_PATTERN")....)
Then, mapserver worked well. (I got a response "200") I don't know the reason. (Mapserver needs any other library??) Please tell me about it.
My english is very poor, sorry.