forums.ps2dev.org

ooPo · Posted: Mon May 19, 2008 1:49 pm Post subject:

Can you post the actual error message? It is usually a lot easier to help out when we can see that.

It sounds like you may be linking in libraries in the wrong order.

sopordave · Joined: 15 May 2008 Posts: 10

ldesnogu · Joined: 17 Apr 2004 Posts: 97

A few things:
- abs is not in math.h/libm, it's part of libc
- try to move -lm at end of link command-line
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sopordave · Joined: 15 May 2008 Posts: 10

sopordave · Joined: 15 May 2008 Posts: 10

I feel silly. After looking in the lib folder, there is no libm.a.

But there is a 32-bit library in lib/32. Does anybody know the reason why there isn't a 64-bit libm, or is my installation just screwed up?

ooPo · Posted: Fri May 23, 2008 11:46 pm Post subject:

You need to put the libraries at the end of the line.

The linker parses the command line and makes a list of what functions it needs as it adds each object file. When it reaches a library it will link only the functions it knows it needs. If you add more object files after the library it doesn't go back and add the missing functions - you get an undefined reference.

There is a way to tell the linker to add everything, but I don't remember how at the moment.

jimparis · Joined: 10 Jun 2005 Posts: 1180 Location: Boston

ooPo · Posted: Sat May 24, 2008 1:37 am Post subject:

mc · Joined: 12 Jan 2005 Posts: 212 Location: Linköping

stripping does not remove unused code, just symbol and debug information.
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ooPo · Posted: Sat May 24, 2008 6:49 am Post subject:

...and that would be why the whole-archive option isn't used. :)

Good to know.

Undertaker · Joined: 25 May 2008 Posts: 2

I need some help I installed the toolchain but it said cant find the directory John Rone when to execute the scripts, I have read the post and tried to rename John Rone to John_Rone but it doesnt allow me to do it.Can anyone please help.What am I missing here?.I am using Cygwin.

mc · Joined: 12 Jan 2005 Posts: 212 Location: Linköping

@ooPo: --whole-archive is useful sometimes when you don't know
beforehand which code will be used, e.g. when you have a dynamic
plug-in system. I use it in the Dreamcast port of ScummVM.
_________________
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I rescue the people

ooPo · Posted: Wed May 28, 2008 11:09 pm Post subject:

Is there a way to strip out the unused parts of the archive after it has been linked in?

mc · Joined: 12 Jan 2005 Posts: 212 Location: Linköping

Linking fixes the address layout, so after that you can not move any code. So even
if you were able to remove unused functions, it would just leave "holes", not make
the memory footprint smaller.

There is an option "--gc-sections" to ld which allows unused sections to be removed
during linking (rather than after) though.

But normally you should be fine with just using archives normally, without
--whole-archive. Then the linker will pull in the parts you need and skip the rest.
_________________
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Getting over crisis
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J.F. · Joined: 22 Feb 2004 Posts: 2907

The readme in the ps3toolchain dir still says to get libmfr instead of libmpfr. Someone might want to alter that. :)

Thanks.

J.F. · Joined: 22 Feb 2004 Posts: 2907

Ran into the infamous "makeinfo" bug compiling newlib for the ps3.

ooPo · Posted: Mon Sep 01, 2008 4:13 am Post subject:

What are these makeinfo changes?

J.F. · Joined: 22 Feb 2004 Posts: 2907

I haven't checked the current PSP scripts/patches, but the manual procedure was to change "MAKEINFO = /some/god/awful/long/path/makeinfo" into "MAKEINFO = makeinfo" in the newlib makefile, make and make install newlib, then continue with the next script.

I assumed SOMETHING was done to clear that issue in the PSP toolchain script since no one has complained about it.

ooPo · Posted: Mon Sep 01, 2008 9:28 am Post subject:

http://www.nabble.com/Check-for-makeinfo-%3E4.9-fails-td13172513.html

J.F. · Joined: 22 Feb 2004 Posts: 2907

ooPo · Posted: Fri Oct 10, 2008 4:29 am Post subject:

I don't think it ever existed. :)

J.F. · Joined: 22 Feb 2004 Posts: 2907

Is there nothing at all? Even notes on dividing up the stuff into libs? I was looking into my own libs needed for a project, but I'd rather not reinvent the wheel if I didn't have to. Otherwise, I'll just do my own libs, and maybe they can help towards an sdk. :)

ooPo · Posted: Fri Oct 10, 2008 11:22 pm Post subject:

Go right ahead, I'd assume that if there was anything really active someone would have spoken up by now. :)

J.F. · Joined: 22 Feb 2004 Posts: 2907

Well, sometimes folks take awhile to respond, so I'll work on my stuff, but keep an eye on the thread. If no one says otherwise by the time I have a few libs and examples ready, I'll post them here for feedback.

steelblood_relic · Joined: 30 Jan 2008 Posts: 8

During the ppu-gcc setup, I noticed something that didn't seem right. There was some output text saying something like "Checking for big-endian..." and I'm pretty sure it said "no". Is there something I have to setup to get it to compile my programs for big-endian Cell, or will the endianness be correct?

Also(maybe this is already answered, but I didn't find it after a quick search): I basically want to compile my PPU/SPU programs on win32/x86 using cygwin and running like an OtherOS without Linux installed(based on OtherOS-demo), will I be able to embed my SPU-programs in my PPU-program, use PPU/SPU-specific instrucions for SIMD functionality, etc, using this toolchain(basically, everything I can do with the IBM Cell SDK)?

Thank you.

J.F. · Joined: 22 Feb 2004 Posts: 2907

That was probably checking the HOST. Remember that you're cross-compiling.

Also, there's really not much more (yet) than the compiler and a partial libc and libm. There's no facility for launching SPU code in the OTHEROS toolchain. You'd need to handle all that by hand. You'd need something like libspu2 for OTHEROS.

steelblood_relic · Joined: 30 Jan 2008 Posts: 8

rapso · Joined: 28 Mar 2005 Posts: 148

if you get quite some annoying bug building the toolchain like warnings because the return type was ignored, and those warnings are threaded like errors, it's probably due to the newest version of gcc (4.4.1 or somethin). fixing all those tiny issues takes really lot of time, I gave up after 2h.

a simple workaround is to downgrade your gcc e.g.