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- Newsgroups: comp.unix.bsd
- Path: sparky!uunet!stanford.edu!ames!elroy.jpl.nasa.gov!ufo!kaleb
- From: kaleb@jpl-devvax.jpl.nasa.gov (Kaleb Keithley)
- Subject: Re: [386BSD] gcc2 and -fPIC
- Message-ID: <1993Jan27.002600.21136@jpl-devvax.jpl.nasa.gov>
- Organization: Jet Propulsion Laboratory (NASA)
- References: <CGD.93Jan25211237@eden.CS.Berkeley.EDU> <1993Jan26.210430.27806@serval.net.wsu.edu>
- Date: Wed, 27 Jan 1993 00:26:00 GMT
- Lines: 34
-
- In article <1993Jan26.210430.27806@serval.net.wsu.edu> hlu@eecs.wsu.edu (H.J. Lu) writes:
- >In article <CGD.93Jan25211237@eden.CS.Berkeley.EDU>, cgd@eden.CS.Berkeley.EDU (Chris G. Demetriou) writes:
- >|> anybody gotten code compiled w/gcc2's -fPIC to assemble properly
- >|> (or "at all") under 386bsd?
- >|>
- >That is because as on bsd doesn't support PIC yet. That leads to another
- >question. I believe a.out format is not very good for PIC even with some
- >patches. Personally, I prefer ELF. The problem is gnu binutils 2.x and
- >gas do not fully support ELF. I was wondering if anyone has done something
- >on ELF?
-
- Huh? a.out and PIC work pretty good on Sun. I always understood the
- difference between PIC and non-PIC was the use of relative addressing
- versus "hard" addressing. I'm sure the assembler is more than capable
- of handling relative offsets if the compiler generates them correctly.
-
- Gcc doesn't grok PIC on any 386 machine, period, e.g. Sun 386i -- at
- least that's what I was told when I asked gnu.gcc.help. There are patches
- out there to make gcc generate PIC on 386. One author of such patches told
- me that Stallman didn't like them because they broke other things, or didn't
- fit the gcc conceptual design or some other blather...
-
- Anyway, ask around on gnu.gcc.help -- the patches are out there!
-
- BTW, you probably already know this, but I'll mention it for what it's
- worth. 99&44/100% of all things compiled with PIC go into shared
- "libraries". Getting things compiled/assembled with PIC is only half the
- battle. Then you have to modify 'ld' to create the library with the PIC
- objects. At least you'll want to handle the pure-text assertion.
-
- --
-
- Kaleb Keithley kaleb@jpl-devvax.jpl.nasa.gov
-
-