ld: Add --enable-textrel-check=[no|yes|warning|error]
Add a configure option, --enable-textrel-check=[no|yes|warning|error], to decide what ELF linker should do by default with DT_TEXTREL in an executable or shared library. PR ld/20824 * NEWS: Mention --enable-textrel-check=[no|yes|warning|error]. * configure.ac: Add --enable-textrel-check=[no|yes|warning|error]. (DEFAULT_LD_TEXTREL_CHECK): New AC_DEFINE_UNQUOTED. (DEFAULT_LD_TEXTREL_CHECK_WARNING): Likewise. * ldmain.c (main): Initialize link_info.textrel_check to DEFAULT_LD_TEXTREL_CHECK. * lexsup.c (ld_options): Check DEFAULT_LD_TEXTREL_CHECK_WARNING. * config.in: Regenerated. * configure: Likewise.
This commit is contained in:
H.J. Lu
parent
151f5de4a6
commit
b32632c499
13
ld/ChangeLog
13
ld/ChangeLog
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@ -1,3 +1,16 @@
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2020-05-28 H.J. Lu <hongjiu.lu@intel.com>
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PR ld/20824
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* NEWS: Mention --enable-textrel-check=[no|yes|warning|error].
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* configure.ac: Add --enable-textrel-check=[no|yes|warning|error].
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(DEFAULT_LD_TEXTREL_CHECK): New AC_DEFINE_UNQUOTED.
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(DEFAULT_LD_TEXTREL_CHECK_WARNING): Likewise.
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* ldmain.c (main): Initialize link_info.textrel_check to
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DEFAULT_LD_TEXTREL_CHECK.
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* lexsup.c (ld_options): Check DEFAULT_LD_TEXTREL_CHECK_WARNING.
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* config.in: Regenerated.
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* configure: Likewise.
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2020-05-28 Nick Clifton <nickc@redhat.com>
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* lexsup.c (parse_args): Generate an error if a name is not
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4
ld/NEWS
4
ld/NEWS
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@ -1,5 +1,9 @@
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-*- text -*-
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* Add a configure option, --enable-textrel-check=[no|yes|warning|error],
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to decide what ELF linker should do by default with DT_TEXTREL in an
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executable or shared library.
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* The -Map=<filename> command line option has been extended so that if
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<filename> is a directory then <filename>/<output-filename>.map will be
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created.
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@ -16,6 +16,12 @@
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/* Define if you want compressed debug sections by default. */
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#undef DEFAULT_FLAG_COMPRESS_DEBUG
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/* The default method for DT_TEXTREL check in ELF linker. */
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#undef DEFAULT_LD_TEXTREL_CHECK
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/* Define to 1 if DT_TEXTREL check is warning in ELF linker by default. */
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#undef DEFAULT_LD_TEXTREL_CHECK_WARNING
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/* Define to 1 if you want to enable -z relro in ELF linker by default. */
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#undef DEFAULT_LD_Z_RELRO
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@ -831,6 +831,7 @@ enable_got
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enable_compressed_debug_sections
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enable_new_dtags
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enable_relro
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enable_textrel_check
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enable_separate_code
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enable_default_hash_style
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enable_werror
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@ -1498,6 +1499,8 @@ Optional Features:
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compress debug sections by default]
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--enable-new-dtags set DT_RUNPATH instead of DT_RPATH by default]
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--enable-relro enable -z relro in ELF linker by default
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--enable-textrel-check=[yes|no|warning|error]
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enable DT_TEXTREL check in ELF linker
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--enable-separate-code enable -z separate-code in ELF linker by default
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--enable-default-hash-style={sysv,gnu,both}
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use this default hash style
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@ -12032,7 +12035,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 12035 "configure"
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#line 12038 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -12138,7 +12141,7 @@ else
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lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
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lt_status=$lt_dlunknown
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cat > conftest.$ac_ext <<_LT_EOF
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#line 12141 "configure"
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#line 12144 "configure"
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#include "confdefs.h"
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#if HAVE_DLFCN_H
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@ -15876,6 +15879,16 @@ if test "${enable_relro+set}" = set; then :
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esac
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fi
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# Decide if DT_TEXTREL check should be enabled in ELF linker.
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ac_default_ld_textrel_check=unset
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# Check whether --enable-textrel-check was given.
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if test "${enable_textrel_check+set}" = set; then :
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enableval=$enable_textrel_check; case "${enableval}" in
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yes|no|warning|error) ac_default_ld_textrel_check=${enableval} ;;
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esac
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fi
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# Decide if -z separate-code should be enabled in ELF linker by default.
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ac_default_ld_z_separate_code=unset
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# Check whether --enable-separate-code was given.
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@ -17618,6 +17631,30 @@ cat >>confdefs.h <<_ACEOF
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_ACEOF
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ac_default_ld_textrel_check_warning=0
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case "${ac_default_ld_textrel_check}" in
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unset|no)
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ac_default_ld_textrel_check=textrel_check_none
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;;
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yes|warning)
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ac_default_ld_textrel_check=textrel_check_warning
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ac_default_ld_textrel_check_warning=1
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;;
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error)
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ac_default_ld_textrel_check=textrel_check_error
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;;
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esac
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cat >>confdefs.h <<_ACEOF
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#define DEFAULT_LD_TEXTREL_CHECK $ac_default_ld_textrel_check
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_ACEOF
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cat >>confdefs.h <<_ACEOF
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#define DEFAULT_LD_TEXTREL_CHECK_WARNING $ac_default_ld_textrel_check_warning
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_ACEOF
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if test "${ac_default_ld_z_separate_code}" = unset; then
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ac_default_ld_z_separate_code=0
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fi
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@ -176,6 +176,15 @@ AC_ARG_ENABLE(relro,
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no) ac_default_ld_z_relro=0 ;;
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esac])dnl
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# Decide if DT_TEXTREL check should be enabled in ELF linker.
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ac_default_ld_textrel_check=unset
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AC_ARG_ENABLE([textrel-check],
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AC_HELP_STRING([--enable-textrel-check=@<:@yes|no|warning|error@:>@],
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[enable DT_TEXTREL check in ELF linker]),
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[case "${enableval}" in
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yes|no|warning|error) ac_default_ld_textrel_check=${enableval} ;;
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esac])
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# Decide if -z separate-code should be enabled in ELF linker by default.
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ac_default_ld_z_separate_code=unset
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AC_ARG_ENABLE(separate-code,
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@ -447,6 +456,26 @@ AC_DEFINE_UNQUOTED(DEFAULT_LD_Z_RELRO,
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$ac_default_ld_z_relro,
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[Define to 1 if you want to enable -z relro in ELF linker by default.])
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ac_default_ld_textrel_check_warning=0
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case "${ac_default_ld_textrel_check}" in
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unset|no)
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ac_default_ld_textrel_check=textrel_check_none
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;;
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yes|warning)
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ac_default_ld_textrel_check=textrel_check_warning
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ac_default_ld_textrel_check_warning=1
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;;
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error)
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ac_default_ld_textrel_check=textrel_check_error
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;;
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esac
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AC_DEFINE_UNQUOTED(DEFAULT_LD_TEXTREL_CHECK,
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$ac_default_ld_textrel_check,
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[The default method for DT_TEXTREL check in ELF linker.])
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AC_DEFINE_UNQUOTED(DEFAULT_LD_TEXTREL_CHECK_WARNING,
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$ac_default_ld_textrel_check_warning,
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[Define to 1 if DT_TEXTREL check is warning in ELF linker by default.])
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if test "${ac_default_ld_z_separate_code}" = unset; then
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ac_default_ld_z_separate_code=0
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fi
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@ -286,6 +286,7 @@ main (int argc, char **argv)
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link_info.combreloc = TRUE;
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link_info.strip_discarded = TRUE;
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link_info.prohibit_multiple_definition_absolute = FALSE;
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link_info.textrel_check = DEFAULT_LD_TEXTREL_CHECK;
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link_info.emit_hash = DEFAULT_EMIT_SYSV_HASH;
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link_info.emit_gnu_hash = DEFAULT_EMIT_GNU_HASH;
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link_info.callbacks = &link_callbacks;
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@ -517,7 +517,12 @@ static const struct ld_option ld_options[] =
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'\0', NULL, N_("Warn if start of section changes due to alignment"),
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TWO_DASHES },
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{ {"warn-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
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'\0', NULL, N_("Warn if outpout has DT_TEXTREL"),
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'\0', NULL,
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#if DEFAULT_LD_TEXTREL_CHECK_WARNING
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N_("Warn if outpout has DT_TEXTREL (default)"),
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#else
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N_("Warn if outpout has DT_TEXTREL"),
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#endif
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TWO_DASHES },
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{ {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
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'\0', NULL, NULL, NO_HELP },
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