Compiling from source... platform specific?

zeus · 31-05-2008, 07:58 AM

If I compile a package from source does it matter if I have an x86 or powerpc computer? Most binaries are for x86 and I have an ibook with gutsy.

cheers guys!

donkey42 · 31-05-2008, 03:15 PM

no, if you compiling from source, compiling from source creates the appropriate installation files for the architecture you are compiling it for

BTW: i can't believe i'm advising about compiling source, anyone would think i compile source all the time, tbh, i haven't even configured HWF kernel in my system let alone compiling from suorce

Edit: source code is source code it must be compiled before it can be executed on any specific architecture / platform

e.g. x86, PPC or whatever

Anti-Trend · 01-06-2008, 07:27 AM

For best results, put CPU-specific Cflags in your /etc/environment file.

Safe Cflags - Gentoo Linux Wiki

For instance, to get the best stable Cflags for a G5 SPARC...

Code:

CHOST="powerpc64-unknown-linux-gnu"
CFLAGS="-mcpu=G5 -O2 -pipe -maltivec -mabi=altivec -fno-strict-aliasing"
CXXFLAGS="${CFLAGS}"
LDFLAGS="-Wl,-O1"

donkey42 · 01-06-2008, 10:57 AM

if i may be so bold

Quote:

Originally Posted by zeus

Most binaries are for x86

if source is already compiled for x86 they are not compatible with PPC or any other architecture

Addis · 01-06-2008, 12:07 PM

Not all applications can be compiled for any architecture though. There may be cases where certain programs/libraries can only be built for certain architectures, since there's no guarantee that it's portable.

donkey42 · 01-06-2008, 12:18 PM

Quote:

Originally Posted by Addis

Not all applications can be compiled for any architecture though. There may be cases where certain programs/libraries can only be built for certain architectures, since there's no guarantee that it's portable.

thankies, are there any tell tale signs to signify a prog/lib source is not cross compilable between arch ?

Edit: sorry for the stupid post, presumably you can tell the arch by reading the source

31-05-2008, 07:58 AM	#1 (permalink) Top
zeus out of date Join Date: May 2003 Age: 27 Posts: 1,618 Times Helpful: 104 My Mood: Twisted Status: Offline My Computer	Compiling from source... platform specific? If I compile a package from source does it matter if I have an x86 or powerpc computer? Most binaries are for x86 and I have an ibook with gutsy. cheers guys!

31-05-2008, 03:15 PM	#2 (permalink) Top
donkey42 Paranoid Geeky Geek Join Date: Mar 2006 Age: 34 Male Posts: 5,746 Times Helpful: 306 My Mood: Paranoid Status: Offline My Computer	no, if you compiling from source, compiling from source creates the appropriate installation files for the architecture you are compiling it for BTW: i can't believe i'm advising about compiling source, anyone would think i compile source all the time, tbh, i haven't even configured HWF kernel in my system let alone compiling from suorce Edit: source code is source code it must be compiled before it can be executed on any specific architecture / platform e.g. x86, PPC or whatever __________________ GRUB manual \| Google Linux \| Distrowatch \| Linux Chix \| Kubuntu \| My Mini City Last edited by donkey42; 31-05-2008 at 04:35 PM. Reason: edit

01-06-2008, 07:27 AM	#3 (permalink) Top
Anti-Trend Nonconformist Geek Join Date: Oct 2003 Age: 27 Male Posts: 4,815 Times Helpful: 525 Status: Online My Computer	For best results, put CPU-specific Cflags in your /etc/environment file. Safe Cflags - Gentoo Linux Wiki For instance, to get the best stable Cflags for a G5 SPARC... Code: CHOST="powerpc64-unknown-linux-gnu" CFLAGS="-mcpu=G5 -O2 -pipe -maltivec -mabi=altivec -fno-strict-aliasing" CXXFLAGS="${CFLAGS}" LDFLAGS="-Wl,-O1" __________________ See My Desktop \| Try Linux \| Install Linux \| Visit My Server \| Support Hardware Forums \| Easily rip DVDs in Linux

01-06-2008, 12:07 PM	#5 (permalink) Top
Addis The King Join Date: Jan 2004 Age: 18 Male Posts: 5,254 Times Helpful: 402 My Mood: Drunk Status: Offline My Computer	Not all applications can be compiled for any architecture though. There may be cases where certain programs/libraries can only be built for certain architectures, since there's no guarantee that it's portable. __________________ Never trust a program you don't have the source code for. My website \| Powerful Desktop Linux \| Linux for human beings \| Linux for power users \| Linux for ricers

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