On Thu, 5 Feb 2026, Torbjorn SVENSSON wrote:

> Hi,
> 
> Gentle ping for below patch.

I think I'm now seeing

+UNRESOLVED: gcc.dg/lto/pr122515 c_lto_pr122515_0.o-c_lto_pr122515.a 
execute  -f
lto=auto -ffat-lto-objects 
+UNRESOLVED: gcc.dg/lto/pr122515 c_lto_pr122515_0.o-c_lto_pr122515.a link  
-flto
=auto -ffat-lto-objects 
+FAIL: gcc.dg/lto/pr122515, ar returned 1: /home/rguenther/obj/gcc/gcc-ar: 
Cannot find plugin 'liblto_plugin.so'

because of this.  This might be a pre-existing issue just exposed, but
it's still a bug.

Richard.

> Kind regards,
> Torbjörn
> 
> On 2026-01-29 13:58, Torbjörn SVENSSON wrote:
> > Changes since v1:
> > 
> > - Replaced implementation with the same approach as for gcov in
> >    gcc/testsuite/gcc.misc-tests/gcov.exp to properly support out of
> >    tree testing.
> > 
> > Ok for trunk and releases/gcc-15?
> > 
> > --
> > 
> > When the the gcc binary is named arm-none-eabi-gcc, the gcc-ar binary
> > will be named arm-none-eabi-gcc-ar.  The current approach works fine as
> > long as the binary does not contain any prefix, but if it does, the
> > gcc-ar binary will not be found.
> > 
> > gcc/testsuite/ChangeLog
> > 
> >  * lib/lto.exp (lto-build-archive): Transform gcc-ar binary name.
> > 
> > Signed-off-by: Torbjörn SVENSSON <[email protected]>
> > ---
> >   gcc/testsuite/lib/lto.exp | 17 ++++++++++++++---
> >   1 file changed, 14 insertions(+), 3 deletions(-)
> > 
> > diff --git a/gcc/testsuite/lib/lto.exp b/gcc/testsuite/lib/lto.exp
> > index c307762abc3..0181a3f4e85 100644
> > --- a/gcc/testsuite/lib/lto.exp
> > +++ b/gcc/testsuite/lib/lto.exp
> > @@ -313,6 +313,7 @@ proc lto-build-archive { testname objlist dest } {
> >       global testcase
> >       global tool
> >       global GCC_UNDER_TEST
> > +    global GCC_AR_UNDER_TEST
> >   
> >       upvar dg-messages-by-file dg-messages-by-file
> >   @@ -327,9 +328,19 @@ proc lto-build-archive { testname objlist dest } {
> >    }
> >       }
> >   -    # Hack up the gcc-ar command from $GCC_UNDER_TEST.
> > -    set ar_cmd [file dirname [lindex $GCC_UNDER_TEST 0]]
> > -    set ar_cmd "$ar_cmd/gcc-ar [lrange $GCC_UNDER_TEST 1 end]"
> > +    # For now find gcc-ar in the same directory as $GCC_UNDER_TEST, unless
> > +    # GCC_AR_UNDER_TEST is defined.
> > +
> > +    if ![info exists GCC_AR_UNDER_TEST] {
> > +   if { ![is_remote host] && [string match "*/*" [lindex $GCC_UNDER_TEST
> > 0]] } {
> > +       set ar_cmd [file dirname [lindex $GCC_UNDER_TEST
> > 0]]/[gcc-transform-out-of-tree gcc-ar]
> > +   } else {
> > +       set ar_cmd [gcc-transform-out-of-tree gcc-ar]
> > +   }
> > +    } else {
> > +        set ar_cmd $GCC_AR_UNDER_TEST
> > +    }
> > +
> >       set ar_output [remote_exec host "$ar_cmd rcs $dest $objlist"]
> >       set retval [lindex $ar_output 0]
> >       set retmsg [lindex $ar_output 1]
> 
> 
> 

-- 
Richard Biener <[email protected]>
SUSE Software Solutions Germany GmbH,
Frankenstrasse 146, 90461 Nuernberg, Germany;
GF: Jochen Jaser, Andrew McDonald, Werner Knoblich; (HRB 36809, AG Nuernberg)

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