[Bug driver/109135] Wrong make utility called with LTO testsuite

["sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109135

--- Comment #7 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Mar 15, 2023 at 08:35:41AM +0000, rguenth at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109135
> 
> --- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
> (In reply to Steve Kargl from comment #4)
> > On Tue, Mar 14, 2023 at 10:36:27PM +0000, sgk at troutmask dot
> > apl.washington.edu wrote:
> > 
> > Looking in obj/gcc/Makefile at line 341 I see the comment
> > 
> > # Make sure the $(MAKE) variable is defined.
> > 
> > followed by no checking to see if MAKE is defined.
> 
> Makefile.in has
> 
> # Make sure the $(MAKE) variable is defined.
> @SET_MAKE@
> 
> configure has
> 
> if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
>   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
> $as_echo "yes" >&6; }
>   SET_MAKE=
> else
>   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
> $as_echo "no" >&6; }
>   SET_MAKE="MAKE=${MAKE-make}"
> fi
> 
> from AC_PROG_MAKE_SET which seems to check whether make sets $MAKE.
> That appearantly succeeds for you.  Do you "properly" do sth like
> 
> MAKE=gmake ../configure
> 
> so configure sees which make you are using?  I think if your gmake

No. I simply use '../configure ; gmake -j6 bootstrap'.
This has worked for years.  I'm currently using GNU
make 4.3. If MAKE is not being set to gmake, then I
would expect bootstrap to fail. 

I plan to run gmake with debugging output, and need to
check gmake.info to see how to dump the environment
information.

> doesn't set it then even recursive configure invocations from gmake
> will resort to 'make'
> 
> but then I _think_ that gmake itself sets $MAKE (if it was not set?) for
> sub-processes.  But maybe only if it thinks its recursive make?

I suppose I'll start using the 'MAKE=gmake ..' form or some variation
as I use tcsh.