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Re: Remove configure tests for some linker -z options
- From: Adhemerval Zanella <adhemerval dot zanella at linaro dot org>
- To: libc-alpha at sourceware dot org
- Date: Fri, 6 Nov 2015 10:10:43 -0200
- Subject: Re: Remove configure tests for some linker -z options
- Authentication-results: sourceware.org; auth=none
- References: <alpine dot DEB dot 2 dot 10 dot 1511060018500 dot 8571 at digraph dot polyomino dot org dot uk>
On 05-11-2015 22:19, Joseph Myers wrote:
> There are configure tests for the linker -z nodelete, -z nodlopen and
> -z initfirst options. These options were added in binutils 2.11, so
> the tests are obsolete; this patch removes them.
>
> Tested for x86_64 and x86 (testsuite, and that installed shared
> libraries are unchanged by the patch).
>
> 2015-11-05 Joseph Myers <joseph@codesourcery.com>
>
> * configure.ac (libc_cv_z_nodelete): Remove configure test.
> (libc_cv_z_nodlopen): Likewise.
> (libc_cv_z_initfirst): Likewise.
> * configure: Regenerated.
>
> diff --git a/configure b/configure
> index 71800c6..01f5075 100755
> --- a/configure
> +++ b/configure
> @@ -5472,102 +5472,6 @@ if test $libc_cv_cc_with_libunwind = yes; then
>
> fi
>
> -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z nodelete" >&5
> -$as_echo_n "checking for linker that supports -z nodelete... " >&6; }
> -libc_linker_feature=no
> -if test x"$gnu_ld" = x"yes"; then
> - libc_linker_check=`$LD -v --help 2>/dev/null | grep "\-z nodelete"`
> - if test -n "$libc_linker_check"; then
> - cat > conftest.c <<EOF
> -int _start (void) { return 42; }
> -EOF
> - if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
> - -Wl,--enable-new-dtags,-z,nodelete -nostdlib -nostartfiles
> - -fPIC -shared -o conftest.so conftest.c
> - 1>&5'
> - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
> - (eval $ac_try) 2>&5
> - ac_status=$?
> - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
> - test $ac_status = 0; }; }
> - then
> - libc_linker_feature=yes
> - fi
> - rm -f conftest*
> - fi
> -fi
> -if test $libc_linker_feature = yes; then
> - libc_cv_z_nodelete=yes
> -else
> - as_fn_error $? "linker with -z nodelete support required" "$LINENO" 5
> -fi
> -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
> -$as_echo "$libc_linker_feature" >&6; }
> -
> -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z nodlopen" >&5
> -$as_echo_n "checking for linker that supports -z nodlopen... " >&6; }
> -libc_linker_feature=no
> -if test x"$gnu_ld" = x"yes"; then
> - libc_linker_check=`$LD -v --help 2>/dev/null | grep "\-z nodlopen"`
> - if test -n "$libc_linker_check"; then
> - cat > conftest.c <<EOF
> -int _start (void) { return 42; }
> -EOF
> - if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
> - -Wl,--enable-new-dtags,-z,nodlopen -nostdlib -nostartfiles
> - -fPIC -shared -o conftest.so conftest.c
> - 1>&5'
> - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
> - (eval $ac_try) 2>&5
> - ac_status=$?
> - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
> - test $ac_status = 0; }; }
> - then
> - libc_linker_feature=yes
> - fi
> - rm -f conftest*
> - fi
> -fi
> -if test $libc_linker_feature = yes; then
> - libc_cv_z_nodlopen=yes
> -else
> - as_fn_error $? "linker with -z nodlopen support required" "$LINENO" 5
> -fi
> -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
> -$as_echo "$libc_linker_feature" >&6; }
> -
> -{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z initfirst" >&5
> -$as_echo_n "checking for linker that supports -z initfirst... " >&6; }
> -libc_linker_feature=no
> -if test x"$gnu_ld" = x"yes"; then
> - libc_linker_check=`$LD -v --help 2>/dev/null | grep "\-z initfirst"`
> - if test -n "$libc_linker_check"; then
> - cat > conftest.c <<EOF
> -int _start (void) { return 42; }
> -EOF
> - if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
> - -Wl,--enable-new-dtags,-z,initfirst -nostdlib -nostartfiles
> - -fPIC -shared -o conftest.so conftest.c
> - 1>&5'
> - { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
> - (eval $ac_try) 2>&5
> - ac_status=$?
> - $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
> - test $ac_status = 0; }; }
> - then
> - libc_linker_feature=yes
> - fi
> - rm -f conftest*
> - fi
> -fi
> -if test $libc_linker_feature = yes; then
> - libc_cv_z_initfirst=yes
> -else
> - as_fn_error $? "linker with -z initfirst support required" "$LINENO" 5
> -fi
> -{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
> -$as_echo "$libc_linker_feature" >&6; }
> -
> ASFLAGS_config=
> { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether --noexecstack is desirable for .S files" >&5
> $as_echo_n "checking whether --noexecstack is desirable for .S files... " >&6; }
> diff --git a/configure.ac b/configure.ac
> index c3ebba3..3fdf992 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1208,18 +1208,6 @@ if test $libc_cv_cc_with_libunwind = yes; then
> AC_DEFINE(HAVE_CC_WITH_LIBUNWIND)
> fi
>
> -LIBC_LINKER_FEATURE([-z nodelete], [-Wl,--enable-new-dtags,-z,nodelete],
> - [libc_cv_z_nodelete=yes],
> - [AC_MSG_ERROR(linker with -z nodelete support required)])
> -
> -LIBC_LINKER_FEATURE([-z nodlopen], [-Wl,--enable-new-dtags,-z,nodlopen],
> - [libc_cv_z_nodlopen=yes],
> - [AC_MSG_ERROR(linker with -z nodlopen support required)])
> -
> -LIBC_LINKER_FEATURE([-z initfirst], [-Wl,--enable-new-dtags,-z,initfirst],
> - [libc_cv_z_initfirst=yes],
> - [AC_MSG_ERROR(linker with -z initfirst support required)])
> -
> ASFLAGS_config=
> AC_CACHE_CHECK(whether --noexecstack is desirable for .S files,
> libc_cv_as_noexecstack, [dnl
>
LGTM.