diff options
| -rw-r--r-- | ld/ChangeLog | 10 | ||||
| -rw-r--r-- | ld/NEWS | 3 | ||||
| -rw-r--r-- | ld/emultempl/elf32.em | 2 | ||||
| -rw-r--r-- | ld/ld.texinfo | 13 |
4 files changed, 26 insertions, 2 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 19e34da..a2c13c8 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,13 @@ +2018-01-12 Nick Clifton <nickc@redhat.com> + + * emultempl/elf32.em (_handle_option): Add support for "-z undefs" + as the opposite of "-z defs". + * ld.texinfo: Document the new option. Update the description of + the -z defs option to make it clear that it does generate an error + if an undefined symbol reference is found in an object file whilst + creating a shared library. + * NEWS: Document this new feature. + 2018-01-11 H.J. Lu <hongjiu.lu@intel.com> * testsuite/ld-elf/pr22393-2a.rd: Replace "-z textonly" with @@ -1,6 +1,9 @@ -*- text -*- + * Add -z separate-code to generate separate code PT_LOAD segment. +* Add "-z undefs" command line option as the inverse of the "-z defs" option. + * Add -z globalaudit command line option to force audit libraries to be run for every dynamic object loaded by an executable - provided that the loader supports this functionality. diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em index 8ff19bf..c0925fc 100644 --- a/ld/emultempl/elf32.em +++ b/ld/emultempl/elf32.em @@ -2726,6 +2726,8 @@ fragment <<EOF case 'z': if (strcmp (optarg, "defs") == 0) link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR; + else if (strcmp (optarg, "undefs") == 0) + link_info.unresolved_syms_in_objects = RM_IGNORE; else if (strcmp (optarg, "muldefs") == 0) link_info.allow_multiple_definition = TRUE; else if (CONST_STRNEQ (optarg, "max-page-size=")) diff --git a/ld/ld.texinfo b/ld/ld.texinfo index 8cd2bed..94d340c 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -1147,8 +1147,9 @@ layout will be optimized to minimize memory pages if the system is using pages of this size. @item defs -Disallows undefined symbols in object files. Undefined symbols in -shared libraries are still allowed. +Report unresolved symbol references from regular object files. This +is done even if the linker is creating a non-symbolic shared library. +This option is the inverse of @samp{-z undefs}. @item dynamic-undefined-weak @itemx nodynamic-undefined-weak @@ -1288,6 +1289,11 @@ Report an error if DT_TEXTREL is set, i.e., if the binary has dynamic relocations in read-only sections. Don't report an error if @samp{notext} or @samp{textoff}. +@item undefs +Do not report unresolved symbol references from regular object files, +either when creating an executable, or when creating a shared library. +This option is the inverse of @samp{-z defs}. + @end table Other keywords are ignored for Solaris compatibility. @@ -1693,6 +1699,7 @@ while linking a large executable. @kindex --no-undefined @kindex -z defs +@kindex -z undefs @item --no-undefined @itemx -z defs Report unresolved symbol references from regular object files. This @@ -1701,6 +1708,8 @@ The switch @option{--[no-]allow-shlib-undefined} controls the behaviour for reporting unresolved references found in shared libraries being linked in. +The effects of this option can be reverted by using @code{-z undefs}. + @kindex --allow-multiple-definition @kindex -z muldefs @item --allow-multiple-definition |