[Bug libstdc++/47368] New: CFLAGS_FOR_TARGET, profiledbootstrap and lto-bootstrap flags unused in libstdc++-v3

["howarth at nitro dot med.uc.edu" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47368

           Summary: CFLAGS_FOR_TARGET, profiledbootstrap and lto-bootstrap
                    flags unused in libstdc++-v3
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: howarth@nitro.med.uc.edu


When building with...

make -j profiledbootstrap BOOT_CFLAGS="-g -O3" CFLAGS_FOR_TARGET="-g -O3"

using the configure options...

Configured with: ../gcc-4.6-20110118/configure --prefix=/sw
--prefix=/sw/lib/gcc4.6 --mandir=/sw/share/man --infodir=/sw/lib/gcc4.6/info
--with-build-config=bootstrap-lto --enable-stage1-languages=c,lto
--enable-languages=c,c++,fortran,lto,objc,obj-c++,java --enable-build-with-cxx
--with-gmp=/sw --with-libiconv-prefix=/sw --with-ppl=/sw --with-cloog=/sw
--with-mpc=/sw --with-system-zlib --x-includes=/usr/X11R6/include
--x-libraries=/usr/X11R6/lib --program-suffix=-fsf-4.6 --enable-checking=yes
--enable-cloog-backend=isl

...libstdc++-v3 does not utilize the CFLAGS_FOR_TARGET="-g -O3" flags in its
build. This is unlike the other library directories such as libffi, libgcc,
libgfortran, libgomp, libiberty, libobjc, libquadmath and libssp which all
appear to use CFLAGS_FOR_TARGET.
   The  libstdc++-v3 build also doesn't utilize the profiling flags produced in
a profiledbootstrap or the lto flags produced from an lto-bootstrap.