Re: [crosstool-ng] error building x86 toolchain

[Khem Raj <raj dot khem at gmail dot com>]

On (07/01/09 08:14), Matthias Kaehlcke wrote:
> Hi Khem,
> 
> El Mon, Jan 05, 2009 at 04:23:31PM -0800 Khem Raj ha dit:
> 
> > On (02/01/09 18:52), Matthias Kaehlcke wrote:
> > > hi,
> > > 
> > > i ran into an error during the crosstool-ng build for a x86
> > > toolchain in the compilation of pthread_rwlock_tryrdlock.c:
> > > 
> > > [ALL  ]    pthread_rwlock_tryrdlock.c: Assembler messages:
> > > [ALL  ]    pthread_rwlock_tryrdlock.c:52: Error: suffix or operands
> > > invalid for `mov'
> > > [ERROR]    make[3]: ***
> > > [/data/prog/embedded/toolchains/ct-ng-build/targets/i386-unknown-linux-gnu/build/build-libc/nptl/pthread_rwlock_tryrdlock.o]
> > > Error 1
> > 
> > I think this error is coming from lll_lock defined in
> > ./nptl/sysdeps/unix/sysv/linux/i386/lowlevellock.h. In the inline asm it
> > says "g" (private)  this tells compiler to chose from any
> > register, memory or immediate integer operand. So in your case compiler
> > choses register bl because __shared is unsigned chari and this instruction does not expect that. Note that 
> > its not possible to do a lot of checks on inline code for the compiler
> > where as assembler can do better here in catching the error and it does.
> > 
> > what opt level are you using? for me it works with -O2 and above 
> > but I get same errors with O O1 or Os
> 
> i build the toolchain with -O
> 
> > may be typecasting private to (int) private would help here try this
> > patch attached it might help.
> 
> after applying your patch pthread_rwlock_tryrdlock.c compiles.
> 
> the build now stops with another error in nptl:
> 
> [ALL  ]    make[3]: *** No rule to make target
> `/data/prog/embedded/toolchains/ct-ng-build/targets/i386-unknown-linux-gnu/build/build-libc/nptl/pthread_spin_trylock.o',
> needed by `lib-noranlib'.  Stop.

Do you really need to build for i386 ? if not then I would suggest try
to build for i486-linux-gnu.

-Khem

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