[Bug libc/17841] New: Build failure if compiler defaults to PIE

[Bug libc/17841] New: Build failure if compiler defaults to PIE

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

            Bug ID: 17841
           Summary: Build failure if compiler defaults to PIE
           Product: glibc
           Version: 2.21
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: hjl.tools at gmail dot com
                CC: drepper.fsp at gmail dot com

If compiler defaults to PIE, build fails with

/export/build/gnu/gcc-pie/release/usr/gcc-5.0.0/bin/gcc -nostdlib -nostartfiles
-o /export/build/gnu/glibc-pie/build-x86_64-linux/io/pwd    -Wl,-z,combreloc
-Wl,-z,relro -Wl,--hash-style=both
/export/build/gnu/glibc-pie/build-x86_64-linux/csu/crt1.o
/export/build/gnu/glibc-pie/build-x86_64-linux/csu/crti.o
`/export/build/gnu/gcc-pie/release/usr/gcc-5.0.0/bin/gcc 
--print-file-name=crtbegin.o`
/export/build/gnu/glibc-pie/build-x86_64-linux/io/pwd.o 
-Wl,-dynamic-linker=/lib64/ld-linux-x86-64.so.2
-Wl,-rpath-link=/export/build/gnu/glibc-pie/build-x86_64-linux:/export/build/gnu/glibc-pie/build-x86_64-linux/math:/export/build/gnu/glibc-pie/build-x86_64-linux/elf:/export/build/gnu/glibc-pie/build-x86_64-linux/dlfcn:/export/build/gnu/glibc-pie/build-x86_64-linux/nss:/export/build/gnu/glibc-pie/build-x86_64-linux/nis:/export/build/gnu/glibc-pie/build-x86_64-linux/rt:/export/build/gnu/glibc-pie/build-x86_64-linux/resolv:/export/build/gnu/glibc-pie/build-x86_64-linux/crypt:/export/build/gnu/glibc-pie/build-x86_64-linux/nptl
/export/build/gnu/glibc-pie/build-x86_64-linux/libc.so.6
/export/build/gnu/glibc-pie/build-x86_64-linux/libc_nonshared.a -Wl,--as-needed
/export/build/gnu/glibc-pie/build-x86_64-linux/elf/ld.so -Wl,--no-as-needed
-lgcc  `/export/build/gnu/gcc-pie/release/usr/gcc-5.0.0/bin/gcc 
--print-file-name=crtend.o`
/export/build/gnu/glibc-pie/build-x86_64-linux/csu/crtn.o
/usr/local/bin/ld: /export/build/gnu/glibc-pie/build-x86_64-linux/csu/crt1.o:
relocation R_X86_64_32S against `__libc_csu_fini' can not be used when making a
shared object; recompile with -fPIC
/export/build/gnu/glibc-pie/build-x86_64-linux/csu/crt1.o: error adding
symbols: Bad value
collect2: error: ld returned 1 exit status

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[Bug libc/17841] Build failure if compiler defaults to PIE

[schwab@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
On armv7l it also fails:

gcc -nostdlib -nostartfiles -static -o
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/elf/sln   
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/csu/crt1.o
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/csu/crti.o `gcc 
--print-file-name=crtbeginT.o`
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/elf/sln.o
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/elf/static-stubs.o 
-Wl,--start-group /home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/libc.a -lgcc
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/elf/libgcc-stubs.a
-Wl,--end-group `gcc  --print-file-name=crtend.o`
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/csu/crtn.o
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/libc.a(setjmp.o): In function
`.L992':
(.rodata.cst4+0x0): undefined reference to `_rtld_global_ro'
/home/abuild/rpmbuild/BUILD/glibc-2.21/cc-base/libc.a(__longjmp.o): In function
`.L992':
(.rodata.cst4+0x0): undefined reference to `_rtld_global_ro'
collect2: error: ld returned 1 exit status

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841 has been created
        at  2a0b2d28affdb91ecdb0900719ba2f9fb942d0ee (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2a0b2d28affdb91ecdb0900719ba2f9fb942d0ee

commit 2a0b2d28affdb91ecdb0900719ba2f9fb942d0ee
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 10:40:46 2015 -0800

    Use -mno-copyreloc-in-pie to compile vismain.c

    GCC 5 may use copy relocation in PIE on x86-64 if linker supports it.
    But vismain.c, which is compiled as PIE, doesn't work with copy
    relocation.  This patch compiles vismain.c with -mno-copyreloc-in-pie
    if -mcopyreloc-in-pie is available.

        [BZ #17841]
        * config.make.in (have-mcopyreloc-in-pie): New.
        * configure.ac (libc_cv_mcopyreloc_in_pie): New.  Set to yes if
        -mcopyreloc-in-pie works.  AC_SUBST.
        * configure: Regenerated.
        * elf/Makefile (CFLAGS-vismain.c): Add -mno-copyreloc-in-pie
        if supported.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=157b304dd18e7ffb89921ea80b9fbebe9da18952

commit 157b304dd18e7ffb89921ea80b9fbebe9da18952
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 14:53:11 2015 -0800

    Compile archives with -fno-pie

    When compiler defaults to PIE, we compile archives with -fno-pie.   Since
    archives won't be used with PIE, compile them with -fpie isn't necessary.

        [BZ #17841]
        * Makeconfig (no-pie-ccflag): New.  Set to -fno-pie.
        (pic-default): Don't define if $(no-pie-ccflag) is -fno-pie.
        * Makerules (archive-objects): New.  Set before including
        extra-lib.mk.
        ($(archive-objects)): New. New rule to append $(no-pie-ccflag)
        to CFLAGS.
        * extra-lib.mk (archive-objects): New.
        * crypt/Makefile (crypt-suffix): New.
        ($(objpfx)md5test): Replace ".o" with $(crypt-suffix).
        ($(objpfx)md5test-giant): Likewise.
        ($(objpfx)sha256test): Likewise.
        ($(objpfx)sha512test): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b13706de6259ffb4140b75e898038afe04b2074f

commit b13706de6259ffb4140b75e898038afe04b2074f
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (+link): Set to $(+link-pie) if default to PIE.
        (+link-tests): Set to $(+link-pie-tests) if default to PIE.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841 has been created
        at  865bdc474cdd2536570afbfd0458538118b12c12 (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=865bdc474cdd2536570afbfd0458538118b12c12

commit 865bdc474cdd2536570afbfd0458538118b12c12
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 14:53:11 2015 -0800

    Compile archives with -fno-pie

    When compiler defaults to PIE, we compile archives with -fno-pie.   Since
    archives won't be used with PIE, compile them with -fpie isn't necessary.

        [BZ #17841]
        * Makeconfig (no-pie-ccflag): New.  Set to -fno-pie.
        (pic-default): Don't define if $(no-pie-ccflag) is -fno-pie.
        * Makerules (archive-objects): New.  Set before including
        extra-lib.mk.
        ($(archive-objects)): New. New rule to append $(no-pie-ccflag)
        to CFLAGS.
        * extra-lib.mk (archive-objects): New.
        * crypt/Makefile (crypt-suffix): New.
        ($(objpfx)md5test): Replace ".o" with $(crypt-suffix).
        ($(objpfx)md5test-giant): Likewise.
        ($(objpfx)sha256test): Likewise.
        ($(objpfx)sha512test): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=618fc355734a330c883eb0287cf7ea48107de19a

commit 618fc355734a330c883eb0287cf7ea48107de19a
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (+link): Set to $(+link-pie) if default to PIE.
        (+link-tests): Set to $(+link-pie-tests) if default to PIE.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841 has been created
        at  b51c97712c9379b45a450e7192ed9251929f484a (commit)

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b51c97712c9379b45a450e7192ed9251929f484a

commit b51c97712c9379b45a450e7192ed9251929f484a
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 14:53:11 2015 -0800

    Compile archives with -fno-pie

    When compiler defaults to PIE, we compile archives with -fno-pie.   Since
    archives won't be used with PIE, compile them with -fpie isn't necessary.

        [BZ #17841]
        * Makeconfig (no-pie-ccflag): New.  Set to -fno-pie.
        (pic-default): Don't define if $(no-pie-ccflag) is -fno-pie.
        (test-object-suffix): New.
        * Makerules (archive-objects): New.  Set before including
        extra-lib.mk.
        ($(archive-objects)): New. New rule to append $(no-pie-ccflag)
        to CFLAGS.
        * extra-lib.mk (archive-objects): New.
        * crypt/Makefile ($(objpfx)md5test): Replace ".o" with
        $(test-object-suffix).
        ($(objpfx)md5test-giant): Likewise.
        ($(objpfx)sha256test): Likewise.
        ($(objpfx)sha512test): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ae19112750e95d9627d0852d7dc98f393ac12f4a

commit ae19112750e95d9627d0852d7dc98f393ac12f4a
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (no-pie-ldflag): New.
        (+link): Renamed to ...
        (+link-no-pie): This.  Add $(no-pie-ldflag).
        (+link-tests): Renamed to ...
        (++link-no-pie-tests): This.  Add $(no-pie-ldflag).
        (+link): New.  Set to $(+link-no-pie) or $(+link-pie), depend on
        if PIE is default.
        (+link-tests): New.  Set to $(+link-pie-tests) or
        $(+link-no-pie-tests), depend on if PIE is default.
        * Rules (binaries-no-pie-tests): New.
        (binaries-no-pie-notests): Likewise.
        ($(addprefix $(objpfx),$(binaries-no-pie-tests))): Likewise.
        ($(addprefix $(objpfx),$(binaries-no-pie-notests))): Likewise.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.
        * math/Makefile (tests): Replace atest-exp atest-sincos
        atest-exp2 with $(tests-no-pie).
        (tests-no-pie): New.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841/master has been created
        at  b624512eca143f88457d1dfdb5cb37229ec05d3a (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b624512eca143f88457d1dfdb5cb37229ec05d3a

commit b624512eca143f88457d1dfdb5cb37229ec05d3a
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 14:53:11 2015 -0800

    Compile archives with -fno-pie

    When compiler defaults to PIE, we compile archives with -fno-pie.   Since
    archives won't be used with PIE, compile them with -fpie isn't necessary.

        [BZ #17841]
        * Makeconfig (no-pie-ccflag): New.  Set to -fno-pie.
        (pic-default): Don't define if $(no-pie-ccflag) is -fno-pie.
        (test-object-suffix): New.
        * Makerules (archive-objects): New.  Set before including
        extra-lib.mk.
        ($(archive-objects)): New. New rule to append $(no-pie-ccflag)
        to CFLAGS.
        * extra-lib.mk (archive-objects): New.
        * crypt/Makefile ($(objpfx)md5test): Replace ".o" with
        $(test-object-suffix).
        ($(objpfx)md5test-giant): Likewise.
        ($(objpfx)sha256test): Likewise.
        ($(objpfx)sha512test): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=502af329320bf3849dafba9b7ae26ae20462d94a

commit 502af329320bf3849dafba9b7ae26ae20462d94a
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (no-pie-ldflag): New.
        (+link): Renamed to ...
        (+link-no-pie): This.  Add $(no-pie-ldflag).
        (+link-tests): Renamed to ...
        (++link-no-pie-tests): This.  Add $(no-pie-ldflag).
        (+link): New.  Set to $(+link-no-pie) or $(+link-pie), depend on
        if PIE is default.
        (+link-tests): New.  Set to $(+link-pie-tests) or
        $(+link-no-pie-tests), depend on if PIE is default.
        * Rules (binaries-no-pie-tests): New.
        (binaries-no-pie-notests): Likewise.
        ($(addprefix $(objpfx),$(binaries-no-pie-tests))): Likewise.
        ($(addprefix $(objpfx),$(binaries-no-pie-notests))): Likewise.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.
        * elf/Makefile (tests-no-pie): Set to tst-dlopen-aout.
        (tests): Replace tst-dlopen-aout with $(tests-no-pie).
        * math/Makefile (tests): Replace atest-exp atest-sincos
        atest-exp2 with $(tests-no-pie).
        (tests-no-pie): New.

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[Bug libc/17841] Build failure if compiler defaults to PIE

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https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841/2.21 has been created
        at  9b1d32c794fe86f21fb534b8f808702b286c5059 (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9b1d32c794fe86f21fb534b8f808702b286c5059

commit 9b1d32c794fe86f21fb534b8f808702b286c5059
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Mar 6 04:55:56 2015 -0800

    Replace __attribute__((visibility("protected")))

    With copy relocation, address of protected data defined in the shared
    library may be external.  Compiler shouldn't asssume protected data will
    be local.  But due to

    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

    __attribute__((visibility("protected"))) doesn't work correctly, we need
    to use asm (".protected xxx") instead.

        * elf/ifuncdep2.c (global): Replace
        __attribute__((visibility("protected"))) with
        asm (".protected global").
        * elf/ifuncmod1.c (global): Likewise.
        * elf/ifuncmod5.c (global): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=420da75f11fcee9aef3bd1a39302449af91f571b

commit 420da75f11fcee9aef3bd1a39302449af91f571b
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (+link): Set to $(+link-pie) if default to PIE.
        (+link-tests): Set to $(+link-pie-tests) if default to PIE.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841/master has been created
        at  f9a8dda341d1493d7666b5242a0ae42c385bc632 (commit)

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f9a8dda341d1493d7666b5242a0ae42c385bc632

commit f9a8dda341d1493d7666b5242a0ae42c385bc632
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 14:53:11 2015 -0800

    Compile archives with -fno-pie

    When compiler defaults to PIE, we compile archives with -fno-pie.   Since
    archives won't be used with PIE, compile them with -fpie isn't necessary.

        [BZ #17841]
        * Makeconfig (no-pie-ccflag): New.  Set to -fno-pie.
        (pic-default): Don't define if $(no-pie-ccflag) is -fno-pie.
        (test-object-suffix): New.
        * Makerules (archive-objects): New.  Set before including
        extra-lib.mk.
        ($(archive-objects)): New. New rule to append $(no-pie-ccflag)
        to CFLAGS.
        * extra-lib.mk (archive-objects): New.
        * crypt/Makefile ($(objpfx)md5test): Replace ".o" with
        $(test-object-suffix).
        ($(objpfx)md5test-giant): Likewise.
        ($(objpfx)sha256test): Likewise.
        ($(objpfx)sha512test): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5307cac2785efd24eef5a21b6ee6e83a4ed46ac7

commit 5307cac2785efd24eef5a21b6ee6e83a4ed46ac7
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (no-pie-ldflag): New.
        (+link): Renamed to ...
        (+link-no-pie): This.  Add $(no-pie-ldflag).
        (+link-tests): Renamed to ...
        (++link-no-pie-tests): This.  Add $(no-pie-ldflag).
        (+link): New.  Set to $(+link-no-pie) or $(+link-pie), depend on
        if PIE is default.
        (+link-tests): New.  Set to $(+link-pie-tests) or
        $(+link-no-pie-tests), depend on if PIE is default.
        * Rules (binaries-no-pie-tests): New.
        (binaries-no-pie-notests): Likewise.
        ($(addprefix $(objpfx),$(binaries-no-pie-tests))): Likewise.
        ($(addprefix $(objpfx),$(binaries-no-pie-notests))): Likewise.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.
        * elf/Makefile (tests-no-pie): Set to tst-dlopen-aout.
        (tests): Replace tst-dlopen-aout with $(tests-no-pie).
        * math/Makefile (tests): Replace atest-exp atest-sincos
        atest-exp2 with $(tests-no-pie).
        (tests-no-pie): New.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841/2.21 has been created
        at  d8feaca7c8568149ee43b28bd582d56b8fe61981 (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d8feaca7c8568149ee43b28bd582d56b8fe61981

commit d8feaca7c8568149ee43b28bd582d56b8fe61981
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Mar 6 04:55:56 2015 -0800

    Replace __attribute__((visibility("protected")))

    With copy relocation, address of protected data defined in the shared
    library may be external.  Compiler shouldn't asssume protected data will
    be local.  But due to

    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

    __attribute__((visibility("protected"))) doesn't work correctly, we need
    to use asm (".protected xxx") instead.

        * elf/ifuncdep2.c (global): Replace
        __attribute__((visibility("protected"))) with
        asm (".protected global").
        * elf/ifuncmod1.c (global): Likewise.
        * elf/ifuncmod5.c (global): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1eac409fb6e772a505d45e65b413be1e258dac94

commit 1eac409fb6e772a505d45e65b413be1e258dac94
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (no-pie-ldflag): New.
        (+link): Set to $(+link-pie) if default to PIE.
        (+link-tests): Set to $(+link-pie-tests) if default to PIE.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.
        * elf/Makefile (LDFLAGS-tst-dlopen-aout): New.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, hjl/pr17841/master has been created
        at  25de905e5c9280002501af20ac4836795ae8146f (commit)

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=25de905e5c9280002501af20ac4836795ae8146f

commit 25de905e5c9280002501af20ac4836795ae8146f
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 14:53:11 2015 -0800

    Compile archives with -fno-pie

    When compiler defaults to PIE, we compile archives with -fno-pie.   Since
    archives won't be used with PIE, compile them with -fpie isn't necessary.

        [BZ #17841]
        * Makeconfig (no-pie-ccflag): New.  Set to -fno-pie.
        (pic-default): Don't define if $(no-pie-ccflag) is -fno-pie.
        (test-object-suffix): New.
        * Makerules (archive-objects): New.  Set before including
        extra-lib.mk.
        ($(archive-objects)): New. New rule to append $(no-pie-ccflag)
        to CFLAGS.
        * extra-lib.mk (archive-objects): New.
        * crypt/Makefile ($(objpfx)md5test): Replace ".o" with
        $(test-object-suffix).
        ($(objpfx)md5test-giant): Likewise.
        ($(objpfx)sha256test): Likewise.
        ($(objpfx)sha512test): Likewise.
        * math/Makefile (LDFLAGS-atest-exp): New.
        (LDFLAGS-atest-sincos): Likewise.
        (LDFLAGS-atest-exp2): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=01181d5beae0edc4cb7abbc8bb94098a2bea2366

commit 01181d5beae0edc4cb7abbc8bb94098a2bea2366
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    If PIE is the default, we need to build programs as PIE.

        [BZ #17841]
        * Makeconfig (no-pie-ldflag): New.
        (+link): Set to $(+link-pie) if default to PIE.
        (+link-tests): Set to $(+link-pie-tests) if default to PIE.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.
        * elf/Makefile (LDFLAGS-tst-dlopen-aout): New.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4ba31feb73f4f700d93e7005e50bdb4835839623

commit 4ba31feb73f4f700d93e7005e50bdb4835839623
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Mar 5 11:36:35 2015 -0800

    Add a testcase for copy reloc against protected data

    Linkers in some versions of binutils 2.25 and 2.26 don't support protected
    data symbol with error messsage like:

    /usr/bin/ld: copy reloc against protected `bar' is invalid
    /usr/bin/ld: failed to set dynamic section sizes: Bad value

    We check if linker supports copy reloc against protected data symbol to
    avoid running the test if linker is broken.

        [BZ #17711]
        * config.make.in (have-protected-data): New.
        * configure.ac: Check linker support for protected data symbol.
        * configure: Regenerated.
        * elf/Makefile (modules-names): Add tst-protected1moda and
        tst-protected1modb if $(have-protected-data) is yes.
        (tests): Add tst-protected1a and tst-protected1b if
        $(have-protected-data) is yes.
        ($(objpfx)tst-protected1a): New.
        ($(objpfx)tst-protected1b): Likewise.
        (tst-protected1modb.so-no-z-defs): Likewise.
        * elf/tst-protected1a.c: New file.
        * elf/tst-protected1b.c: Likewise.
        * elf/tst-protected1mod.h: Likewise.
        * elf/tst-protected1moda.c: Likewise.
        * elf/tst-protected1modb.c: Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6df34771a51884b8cfdc8216e9d07883979ebf84

commit 6df34771a51884b8cfdc8216e9d07883979ebf84
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Mar 4 10:24:25 2015 -0800

    Add ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA to x86

    With copy relocation, address of protected data defined in the shared
    library may be external.   When there is a relocation against the
    protected data symbol within the shared library, we need to check if we
    should skip the definition in the executable copied from the protected
    data.  This patch adds ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA and defines
    it for x86.  If ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA isn't 0, do_lookup_x
    will skip the data definition in the executable from copy reloc.

        [BZ #17711]
        * elf/dl-lookup.c (do_lookup_x): When UNDEF_MAP is NULL, which
        indicates it is called from do_lookup_x on relocation against
        protected data, skip the data definion in the executable from
        copy reloc.
        (_dl_lookup_symbol_x): Pass ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA,
        instead of ELF_RTYPE_CLASS_PLT, to do_lookup_x for
        EXTERN_PROTECTED_DATA relocation against STT_OBJECT symbol.
        * sysdeps/generic/ldsodefs.h * (ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA):
        New.  Defined to 4 if DL_EXTERN_PROTECTED_DATA is defined,
        otherwise to 0.
        * sysdeps/i386/dl-lookupcfg.h (DL_EXTERN_PROTECTED_DATA): New.
        * sysdeps/i386/dl-machine.h (elf_machine_type_class): Set class
        to ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA for R_386_GLOB_DAT.
        * sysdeps/x86_64/dl-lookupcfg.h (DL_EXTERN_PROTECTED_DATA): New.
        * sysdeps/x86_64/dl-machine.h (elf_machine_type_class): Set class
        to ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA for R_X86_64_GLOB_DAT.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, hjl/pr17841/master has been created
        at  ca1f728cbefd6955735087e45d80620113623b3b (commit)

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ca1f728cbefd6955735087e45d80620113623b3b

commit ca1f728cbefd6955735087e45d80620113623b3b
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Mar 2 14:53:11 2015 -0800

    Compile archives with -fno-pie

    When compiler defaults to PIE, we compile archives with -fno-pie.   Since
    archives won't be used with PIE, compile them with -fpie isn't necessary.

        [BZ #17841]
        * Makeconfig (no-pie-ccflag): New.  Set to -fno-pie.
        (pic-default): Don't define if $(no-pie-ccflag) is -fno-pie.
        (test-object-suffix): New.
        * Makerules (archive-objects): New.  Set before including
        extra-lib.mk.
        ($(archive-objects)): New. New rule to append $(no-pie-ccflag)
        to CFLAGS.
        * extra-lib.mk (archive-objects): New.
        * crypt/Makefile ($(objpfx)md5test): Replace ".o" with
        $(test-object-suffix).
        ($(objpfx)md5test-giant): Likewise.
        ($(objpfx)sha256test): Likewise.
        ($(objpfx)sha512test): Likewise.
        * math/Makefile (LDFLAGS-atest-exp): New.
        (LDFLAGS-atest-sincos): Likewise.
        (LDFLAGS-atest-exp2): Likewise.

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1ea33bb5517516d1d1005b953c92a071454e66d5

commit 1ea33bb5517516d1d1005b953c92a071454e66d5
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jan 14 06:29:04 2015 -0800

    Support compilers defaulting to PIE

    To support building glibc with GCC 6 configured with --enable-default-pie,
    which generates PIE by default, we need to build programs as PIE.  But
    elf/tst-dlopen-aout must not be built as PIE since it tests dlopen on
    ET_EXEC file and PIE is ET_DYN.

        [BZ #17841]
        * Makeconfig (no-pie-ldflag): New.
        (+link): Set to $(+link-pie) if default to PIE.
        (+link-tests): Set to $(+link-pie-tests) if default to PIE.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.
        * elf/Makefile (LDFLAGS-tst-dlopen-aout): New.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[vapier at gentoo dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

Mike Frysinger <vapier at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |toolchain at gentoo dot org

--- Comment #12 from Mike Frysinger <vapier at gentoo dot org> ---
(In reply to Andreas Schwab from comment #1)

you'll most likely need a fix like Gentoo has had for years:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=6d234be2fbd744d252c17cc1ee79010f3b3d88dc

i never got back around to addressing the questions on the referenced
libc-ports thread ...

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[Bug libc/17841] Build failure if compiler defaults to PIE

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |2.22

--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.

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[Bug libc/17841] Build failure if compiler defaults to PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=17841

--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, master has been updated
       via  cc08749b2d1c68284b25b157fbbe1ff219495cae (commit)
      from  45a8f0e6629d7772b9fa1aef0389bc51a094424d (commit)

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cc08749b2d1c68284b25b157fbbe1ff219495cae

commit cc08749b2d1c68284b25b157fbbe1ff219495cae
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Jun 25 02:37:04 2015 -0700

    Support compilers defaulting to PIE

    To support building glibc with GCC 6 configured with --enable-default-pie,
    which generates PIE by default, we need to build programs as PIE.  But
    elf/tst-dlopen-aout must not be built as PIE since it tests dlopen on
    ET_EXEC file and PIE is ET_DYN.

        [BZ #17841]
        * Makeconfig (no-pie-ldflag): New.
        (+link): Set to $(+link-pie) if default to PIE.
        (+link-tests): Set to $(+link-pie-tests) if default to PIE.
        * config.make.in (build-pie-default): New.
        * configure.ac (libc_cv_pie_default): New.  Set to yes if -fPIE
        is default.  AC_SUBST.
        * configure: Regenerated.
        * elf/Makefile (LDFLAGS-tst-dlopen-aout): New.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog      |   12 ++++++++++++
 Makeconfig     |    6 ++++++
 NEWS           |   22 +++++++++++-----------
 config.make.in |    1 +
 configure      |   21 +++++++++++++++++++++
 configure.ac   |   13 +++++++++++++
 elf/Makefile   |    1 +
 7 files changed, 65 insertions(+), 11 deletions(-)

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