On Tue, Jun 2, 2015 at 8:02 PM, Michael Meissner <meiss...@linux.vnet.ibm.com> wrote: > This is a convenience patch that would help those of us who work on the main > GCC releases as well as backporting changes to the IBM Advance Toolchain. It > adds a new configuration switch, --with-advance-toolchain=<xxx> that > configures > the compiler to use the include files, libraries, and dynamic loader that are > released with the IBM Advance Toolchain releases instead of the distribution > headers and libraries. > > On the older systems, the distribution glibc (based on glibc 2.11) accounts > for > some errors in the testsuite that are fixed in newer glibc's that the Advance > Toolchain provides (Advance Toolchain 7.0 provides 2.18, while Advance > Toolchain 8.0 provides 2.20), and it is useful not to encounter these when > running make check. > > I've tested these patches on a power7 SuSE Sles 11.3 big endian system, and on > a power8 Ubuntu little endian system. On the older system, I can't build a > bootstrap compiler, due to C++ library issues. On the Ubunto system, I get no > regressions. Given this switch is a debug convenience option that users are > not expected to use, I don't see the no bootstrap issue as being a problem. > > In addition to the trunk, I would like to backport the patch to the active > branches (4.9 and 5). Is this patch acceptable to commit to the trunk and to > the branches? > > 2015-06-02 Michael Meissner <meiss...@linux.vnet.ibm.com> > > * config.gcc (powerpc*-*-*): Add support for a new configure > option --with-advance-toolchain=<xxx> which overrides using the > default header files, libraries and dynamic linker. > > * config/rs6000/linux64.h (SUBSUBTARGET_EXTRA_SPECS): Add new > specs to support the configure --with-advance-toolchain=<xxx> > option. > (INCLUDE_EXTRA_SPEC): Likewise. > (LINK_OS_EXTRA_SPEC32): Likewise. > (LINK_OK_EXTRA_SPEC64): Likewise. > (LINK_OS_NEW_DTAGS_SPEC): Likewise. > (DYNAMIC_LINKER_PREFIX): Likewise. > (CPP_OS_DEFAULT_SPEC): Use the new specs for providing advance > toolchain support. > (GLIBC_DYNAMIC_LINKER32): Likewise. > (GLIBC_DYNAMIC_LINKER64): Likewise. > (LINK_OS_LINUX_SPEC32): Likewise. > (LINK_OS_LINUX_SPEC64): Likewise. > > * doc/install.texi (--enable-advance-toolchain=<xx>): Document new > configuration option.
This is okay, with the correction noticed by Joseph. Please ask the Release Managers about backporting. Thanks, David
