[Bug ld/20283] Make -z relro the default if possible

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=20283

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by H.J. Lu <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=647e4d46495f2bfb0950fd1066c8a660173cca40

commit 647e4d46495f2bfb0950fd1066c8a660173cca40
Author: H.J. Lu <address@hidden>
Date:   Wed Jun 22 05:37:24 2016 -0700

    ld: Add a linker configure option --enable-relro

    Add a configure option --enable-relro to decide whether -z relro should
    be enabled in ELF linker by default.  Default to yes for all Linux
    targets, except FRV, HPPA, IA64 and MIPS, since many relro tests fail
    on these targets.

        PR ld/20283
        * NEWS: Mention --enable-relro.
        * configure.ac: Add --enable-relro.
        (DEFAULT_LD_Z_RELRO): New.  Set by --enable-relro.
        * configure.tgt (ac_default_ld_z_relro): Default it to 1 for
        some Linux targets.
        * config.in: Regenerated.
        * configure: Likewise.
        * emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Set
        link_info.relro to DEFAULT_LD_Z_RELRO.
        * testsuite/config/default.exp (ld_elf_shared_opt): New.
        * testsuite/lib/ld-lib.exp (run_dump_test): Pass
        $ld_elf_shared_opt to ld for ELF targets with shared object
        support.
        (run_ld_link_tests): Likewise.

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