From: MenTaLguY Date: 2007-08-22T04:00:56+09:00 Subject: Re: Failure trying to build Ruby 1.8.6 on HP-UX 11 If I rememeber correctly from my own attempts to build Ruby on HP-UX, one of the issues is that HP's make is broken and incorrectly thinks parse.y is out of date, trying to regenerate it with HP's yacc, which is also broken. Things generally get much better if you use the GNU toolchain (make, bison, gcc) rather than HP's. But note that you'll still need to disable IPv6 support or else the socket library won't actually work (because HP's IPv6 support is broken). Also, make sure that the linker patches are up-to-date, or you may run into linker issues down the road. -mental