1.4.0/rijndael.c/do_padlock: can't find a register in class `GENERAL_REGS' while reloading `asm' on elder gccs

[Axel Thimm]

On Sun, Jan 13, 2008 at 01:52:39PM +0200, Ismail Dönmez wrote:
> Sunday 13 January 2008 11:01:43 tarihinde Axel Thimm şunları yazmıştı:
> > trying to build libgcrypt on RHEL4 (gcc 3.4.6) and RHEL3 (gcc 3.2.3)
> > fails with the above on i386 (which is register starved anyway),
> > x86_64 for example builds fine.
> >
> > As later gcc version can build this even on i386 it looks like a gcc
> > shortcoming of that era. Still one would like to be able to build
> > libgcrypt on these distros :(
> >
> > With RHEL4's gcc 3.4.6 a possible workaround is to use -O0 to gcc, but
> > that doesn't work with RHEL3's 3.2.3. :(
> >
> > bash-2.05b# gcc -O0 -DHAVE_CONFIG_H -I. -I..  -I../src -I../src -c -o
> > rijndael.o rijndael.c rijndael.c: In function `do_padlock':
> > rijndael.c:2062: can't find a register in class `GENERAL_REGS' while
> > reloading `asm'
> >
> > Is there any workaround to get this building on older gccs? Thanks!
> 
> At least try -O2 -fomit-frame-pointer as CFLAGS so that it can optimize away 
> some code which can reduce register usage.

Thanks, that did it!

On Mon, Jan 14, 2008 at 08:13:09PM +0100, Werner Koch wrote:
> > Is there any workaround to get this building on older gccs? Thanks!
> 
> ./configure --disable-padlock
> 
> should help.

Should I prefer this over the -fomit-frame-pointer flag?
-- 
Axel.Thimm at ATrpms.net
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