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[GOLD] Add --secure-plt option for ppc32

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Added just to accept, and ignore.  gcc since 2015-10-21, when
configured with --enable-secureplt passes this option to the linker.
As powerpc gold cannot link --bss-plt code successfully, gold needs to
accept the option or the gcc specs file needs to be changed.

The patch also make gold detect --bss-plt code and error out rather
than producing a binary that crashes.

	* options.h: Add --secure-plt option.
	* powerpc.cc (Target_powerpc::Scan::local): Detect and error
	on -fPIC -mbss-plt code.
	(Target_powerpc::Scan::global): Likewise.
This commit is contained in:
Alan Modra
2017-01-10 10:24:09 +10:30
parent eaa38cfd42
commit f159cdb611
3 changed files with 48 additions and 0 deletions
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3
gold/options.h
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@@ -1203,6 +1203,9 @@ class General_options
DEFINE_special(section_start, options::TWO_DASHES, '\0',
N_("Set address of section"), N_("SECTION=ADDRESS"));
DEFINE_bool(secure_plt, options::TWO_DASHES , '\0', true,
N_("(PowerPC only) Use new-style PLT"), NULL);
DEFINE_optional_string(sort_common, options::TWO_DASHES, '\0', NULL,
N_("Sort common symbols by alignment"),
N_("[={ascending,descending}]"));