[Bug bootstrap/80615] New: [8 Regression] Boostrap --enable-maintainer-mode fails because genmddeps nees not-yet-built libiberty.a

["tkoenig at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80615

            Bug ID: 80615
           Summary: [8  Regression] Boostrap --enable-maintainer-mode
                    fails because genmddeps nees not-yet-built libiberty.a
           Product: gcc
           Version: 7.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tkoenig at gcc dot gnu.org
  Target Milestone: ---

Created attachment 41307
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41307&action=edit
config.log which fails

Configure command:

../trunk/gcc/configure --prefix=$HOME --enable-languages=c,c++,fortran,lto 
--enable-maintainer-mode

Bootstrapping compiler:

g25@linux-d6cw:~/Gcc/trunk-bin> gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/home/ig25/lib/gcc/x86_64-pc-linux-gnu/8.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../trunk/configure --prefix=/home/ig25
--enable-languages=c,c++,fortran,lto
Thread model: posix
gcc version 8.0.0 20170501 (experimental) (GCC) 

Error message:

ig25@linux-d6cw:~/Gcc/trunk-bin> make -j4
TARGET_CPU_DEFAULT="" \
HEADERS="auto-host.h ansidecl.h" DEFINES="" \
/bin/sh ../trunk/gcc/mkconfig.sh config.h
TARGET_CPU_DEFAULT="" \
HEADERS="options.h insn-constants.h config/vxworks-dummy.h
config/i386/biarch64.h config/i386/i386.h config/i386/unix.h config/i386/att.h
config/dbxelf.h config/elfos.h config/gnu-user.h config/glibc-stdint.h
config/i386/x86-64.h config/i386/gnu-user-common.h config/i386/gnu-user64.h
config/linux.h config/linux-android.h config/i386/linux-common.h
config/i386/linux64.h config/initfini-array.h defaults.h" DEFINES="LIBC_GLIBC=1
LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4 DEFAULT_LIBC=LIBC_GLIBC
ANDROID_DEFAULT=0" \
/bin/sh ../trunk/gcc/mkconfig.sh tm.h
TARGET_CPU_DEFAULT="" \
HEADERS="config/i386/i386-protos.h config/linux-protos.h tm-preds.h" DEFINES=""
\
/bin/sh ../trunk/gcc/mkconfig.sh tm_p.h
TARGET_CPU_DEFAULT="" \
HEADERS="auto-host.h ansidecl.h" DEFINES="" \
/bin/sh ../trunk/gcc/mkconfig.sh bconfig.h
make: *** No rule to make target
'../build-x86_64-pc-linux-gnu/libiberty/libiberty.a', needed by
'build/genmddeps'.  Stop.
make: *** Waiting for unfinished jobs....
config.h is unchanged
tm_p.h is unchanged
bconfig.h is unchanged
tm.h is unchanged