Re: [PATCH] configure: arrange to use appropriate objcopy

[Jakub Jelinek <jakub@redhat.com>]

On Thu, Jun 02, 2022 at 05:32:10PM +0200, Jan Beulich via Gcc-patches wrote:
> Using the system objcopy is wrong when other configure checks have
> probed a different set of binutils (I've noticed the problem on a system
> where the base objcopy can't deal with compressed debug sections).
> Arrange for the matching one to be picked up, first and foremost if an
> "in tree" one is available, by mirroring respective logic already
> present for nm.
> 
> gcc/
> 
> 	* Makefile.in (ORIGINAL_OBJCOPY_FOR_TARGET): New.
> 	* configure.ac: Check for objcopy, producing
> 	ORIGINAL_OBJCOPY_FOR_TARGET.
> 	* configure: Update accordingly.
> 	* exec-tool.in (ORIGINAL_OBJCOPY_FOR_TARGET): New.
> 	Handle objcopy.

This regressed
Executing on host: /home/jakub/src/gcc/obj44/gcc/xgcc -B/home/jakub/src/gcc/obj44/gcc/     -fdiagnostics-plain-output   -flto -g -gsplit-dwarf   -c -o c_lto_pr83719_0.o /home/jakub/src/gcc/gcc/testsuite/gcc.dg/lto/pr83719_0.c    (timeout = 300)
spawn -ignore SIGHUP /home/jakub/src/gcc/obj44/gcc/xgcc -B/home/jakub/src/gcc/obj44/gcc/ -fdiagnostics-plain-output -flto -g -gsplit-dwarf -c -o c_lto_pr83719_0.o /home/jakub/src/gcc/gcc/testsuite/gcc.dg/lto/pr83719_0.c
cc1: note: '-gsplit-dwarf' is not supported with LTO, disabling
/home/jakub/src/gcc/obj44/gcc/objcopy: line 120: exec: --: invalid option
exec: usage: exec [-cl] [-a name] [command [argument ...]] [redirection ...]
compiler exited with status 1
FAIL: gcc.dg/lto/pr83719 c_lto_pr83719_0.o assemble,  -flto -g -gsplit-dwarf 
for me, both on x86_64-linux and i686-linux.
For some reason, I have
grep OBJCOPY *gcc/Makefile
gcc/Makefile:ORIGINAL_OBJCOPY_FOR_TARGET = 
prev-gcc/Makefile:ORIGINAL_OBJCOPY_FOR_TARGET = 
stage1-gcc/Makefile:ORIGINAL_OBJCOPY_FOR_TARGET = 

	Jakub