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| author | fincs <fincs.alt1@gmail.com> | 2016-12-16 13:42:02 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2016-12-16 13:49:03 +1030 |
| commit | 221855059a11ab76aa909a5df4104354f9384139 (patch) | |
| tree | e1bd030fe42b33167faff27c3df182cc6843054d /ld/ld.texinfo | |
| parent | 4c4067e410581fe5c6190407b4fd410e7b71f9e4 (diff) | |
| download | gdb-221855059a11ab76aa909a5df4104354f9384139.zip gdb-221855059a11ab76aa909a5df4104354f9384139.tar.gz gdb-221855059a11ab76aa909a5df4104354f9384139.tar.bz2 | |
Implement and document --gc-keep-exported
include/
* bfdlink.h (struct bfd_link_info): Add gc_keep_exported.
bfd/
* elflink.c (bfd_elf_gc_mark_dynamic_ref_symbol): Add handling
for info->gc_keep_exported.
(bfd_elf_gc_sections): Likewise.
ld/
* ld.texinfo: Document --gc-keep-exported.
* ldlex.h (enum option_values): Add OPTION_GC_KEEP_EXPORTED.
* lexsup.c (parse_args): Add handling for --gc-keep-exported.
Diffstat (limited to 'ld/ld.texinfo')
| -rw-r--r-- | ld/ld.texinfo | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/ld/ld.texinfo b/ld/ld.texinfo index ec7ff1b..17503eb 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -1558,6 +1558,18 @@ default behaviour (of not listing the sections that are removed) can be restored by specifying @samp{--no-print-gc-sections} on the command line. +@kindex --gc-keep-exported +@cindex garbage collection +@item --gc-keep-exported +When @samp{--gc-sections} is enabled, this option prevents garbage +collection of unused input sections that contain global symbols having +default or protected visibility. This option is intended to be used for +executables where unreferenced sections would otherwise be garbage +collected regardless of the external visibility of contained symbols. +Note that this option has no effect when linking shared objects since +it is already the default behaviour. This option is only supported for +ELF format targets. + @kindex --print-output-format @cindex output format @item --print-output-format |