[Bug libstdc++/68156] New: --disable-hosted-libstdcxx doesn't work

[Bug libstdc++/68156] New: --disable-hosted-libstdcxx doesn't work

[fedor_qd at mail dot ru]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68156

            Bug ID: 68156
           Summary: --disable-hosted-libstdcxx doesn't work
           Product: gcc
           Version: 5.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: fedor_qd at mail dot ru
  Target Milestone: ---

Created attachment 36619
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36619&action=edit
This log file created by configure

When configuring with --disable-hosted-libstdcxx configure script terminates
with "exit 1"

I need to build libsupc++ only, any libc not aviable.
These commands taken used for configuring in MSYS:

export TARGET=arm-none-symbianelf
export PREFIX=/usr/local/$TARGET
export PATH=$PATH:$PREFIX/bin

../../gcc-5.2.0/libstdc++-v3/configure --build=i686-pc-mingw32
--host=arm-none-symbianelf --target=arm-none-symbianelf \
        --prefix=$PREFIX --disable-nls --disable-hosted-libstdcxx

config.log attached

[Bug libstdc++/68156] --disable-hosted-libstdcxx doesn't work

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68156

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Fiodar from comment #0)
> I need to build libsupc++ only, any libc not aviable.

That's not possible.

--disable-hosted-libstdcxx means that the libstdc++ that gets built and
installed will be a freestanding implementation, but you still need to build it
on a hosted system with a proper libc.