[Bug bootstrap/94739] GCC won't build on CET enabled Linux OS

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94739

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:8fc8bf801e46d0d478c50bddecf5d8edf9511849

commit r10-7961-g8fc8bf801e46d0d478c50bddecf5d8edf9511849
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Sat Apr 25 10:06:59 2020 -0700

    Enable Intel CET in liblto_plugin.so on Intel CET enabled host

    Since ld is Intel CET enabled on Intel CET enabled host, dlopen fails on
    liblto_plugin.so if it isn't Intel CET enabled.  Add GCC_CET_HOST_FLAGS
    to cet.m4, use it in libiberty and lto-plugin to always enable Intel
    CET in liblto_plugin.so on Intel CET enabled host.

    On Linux/x86 host, enable Intel CET by default if assembler and compiler
    support Intel CET so that the generated liblto_plugin.so can be used on
    both CET and non-CET machines.  It is an error to disable Intel CET in
    liblto_plugin.so on Intel CET enabled host.

    config/

            PR bootstrap/94739
            * cet.m4 (GCC_CET_HOST_FLAGS): New.

    libiberty/

            PR bootstrap/94739
            * Makefile.in (COMPILE.c): Add @CET_HOST_FLAGS@.
            (configure_deps): Add $(srcdir)/../config/cet.m4 and
            $(srcdir)/../config/enable.m4.
            * aclocal.m4: Include ../config/cet.m4 and ../config/enable.m4.
            * configure.ac: Add GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) and
            AC_SUBST(CET_HOST_FLAGS).
            * configure: Regenerated.

    lto-plugin/

            PR bootstrap/94739
            * Makefile.am (AM_CFLAGS): Add $(CET_HOST_FLAGS).
            * configure.ac: Add GCC_CET_HOST_FLAGS(CET_HOST_FLAGS) and
            AC_SUBST(CET_HOST_FLAGS).
            * Makefile.in: Regenerated.
            * aclocal.m4: Likewise.
            * configure: Likewise.