[PATCH] Implement a workaround for GNU mak jobserver

[H.J. Lu]

On Tue, Oct 27, 2020 at 8:30 AM Andreas Schwab <schwab@linux-m68k.org> wrote:
>
> On Okt 27 2020, H.J. Lu wrote:
>
> > Since it must keep the same timestamps on config.status and Makefile,
>
> Why is that needed?
>

ld/Makefile has

ldemul-list.h: Makefile
        (echo "/* This file is automatically generated.  DO NOT EDIT! */";\
        for f in `echo " " ${EMULATION_OFILES} "" \
         | sed -e 's/ e/ ld/g' -e 's/ ld/ /g' -e 's/[.]o//g'`; do \
            echo "extern ld_emulation_xfer_type ld_$${f}_emulation;"; \
        done;\
        echo "";\
        echo "#define EMULATION_LIST \\";\
        for f in `echo " " ${EMULATION_OFILES} "" \
         | sed -e 's/ e/ ld/g' -e 's/ ld/ /g' -e 's/[.]o//g'`; do \
            echo "  &ld_$${f}_emulation, \\"; \
        done;\
        echo "  0") >ldemul-tmp.h
        mv ldemul-tmp.h ldemul-list.h

"make check" training run in triggers both linker check and
ld-new rebuild in parallel because Makefile was edited by
config.status.  This is a simple change to avoid it.

-- 
H.J.