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Relax a -r --gc-sections requirement

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A symbol root is not needed if --gc-keep-exported is also given.

	* ldlang.c (lang_end): Don't error if no --entry or --undefined
	is given with -r -gc-sections if --gc-keep-exported.
This commit is contained in:
Alan Modra 2018-10-19 23:59:11 +10:30
parent fe19e45ff3
commit 91ae256e33
2 changed files with 9 additions and 2 deletions
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5
ld/ChangeLog
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@ -1,3 +1,8 @@
2018-10-20 Alan Modra <amodra@gmail.com>
* ldlang.c (lang_end): Don't error if no --entry or --undefined
is given with -r -gc-sections if --gc-keep-exported.
2018-10-15 Jim Wilson <jimw@sifive.com>
* emulparams/elf32lriscv-defs.sh (DATA_START_SYMBOLS): New.

6
ld/ldlang.c
View File

@ -6383,8 +6383,10 @@ lang_end (void)
warn = TRUE;
/* Force the user to specify a root when generating a relocatable with
--gc-sections. */
if (link_info.gc_sections && bfd_link_relocatable (&link_info)
--gc-sections, unless --gc-keep-exported was also given. */
if (bfd_link_relocatable (&link_info)
&& link_info.gc_sections
&& !link_info.gc_keep_exported
&& !(entry_from_cmdline || undef_from_cmdline))
einfo (_("%F%P: gc-sections requires either an entry or "
"an undefined symbol\n"));