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ld: Add -Bno-symbolic

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PR 27834
	* ldlex.h (enum option_values): Add OPTION_NO_SYMBOLIC.
	* lexsup.c (ld_options): Add -Bno-symbolic.
	(parse_args): Handle -Bno-symbolic.
	* ld.texi: Document -Bno-symbolic.
	* NEWS: Mention -Bno-symbolic.
	* testsuite/ld-elf/shared.exp: Add a test.
This commit is contained in:
Fangrui Song 2021-05-11 23:10:45 -07:00 committed by Alan Modra
parent 4863cddb50
commit cf893b0ef7
6 changed files with 30 additions and 0 deletions
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10
ld/ChangeLog
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@ -1,3 +1,13 @@
2021-05-13 Fangrui Song <maskray@google.com>
PR 27834
* ldlex.h (enum option_values): Add OPTION_NO_SYMBOLIC.
* lexsup.c (ld_options): Add -Bno-symbolic.
(parse_args): Handle -Bno-symbolic.
* ld.texi: Document -Bno-symbolic.
* NEWS: Mention -Bno-symbolic.
* testsuite/ld-elf/shared.exp: Add a test.
2021-05-12 Richard Earnshaw <rearnsha@arm.com>
* testsuite/ld-arm/arm-elf.exp (farcall test for v8-m.mainline):

2
ld/NEWS
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@ -8,6 +8,8 @@
* Add -z start-stop-gc to disable special treatment of __start_*/__stop_*
references when --gc-sections.
* Add -Bno-symbolic to cancel -Bsymbolic and -Bsymbolic-functions.
Changes in 2.36:
* Add libdep plugin, for linking dependencies of static libraries that

5
ld/ld.texi
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@ -1633,6 +1633,11 @@ symbols to the definition within the shared library, if any.
This option is only meaningful on ELF platforms which support shared
libraries.
@kindex -Bno-symbolic
@item -Bno-symbolic
This option can cancel previously specified @samp{-Bsymbolic} and
@samp{-Bsymbolic-functions}.
@kindex --dynamic-list=@var{dynamic-list-file}
@item --dynamic-list=@var{dynamic-list-file}
Specify the name of a dynamic list file to the linker. This is

1
ld/ldlex.h
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@ -54,6 +54,7 @@ enum option_values
OPTION_OFORMAT,
OPTION_RELAX,
OPTION_NO_RELAX,
OPTION_NO_SYMBOLIC,
OPTION_RETAIN_SYMBOLS_FILE,
OPTION_RPATH,
OPTION_RPATH_LINK,

5
ld/lexsup.c
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@ -302,6 +302,8 @@ static const struct ld_option ld_options[] =
'\0', NULL, NULL, ONE_DASH },
{ {"static", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"Bno-symbolic", no_argument, NULL, OPTION_NO_SYMBOLIC},
'\0', NULL, N_("Don't bind global references locally"), ONE_DASH },
{ {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
'\0', NULL, N_("Bind global references locally"), ONE_DASH },
{ {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
@ -1301,6 +1303,9 @@ parse_args (unsigned argc, char **argv)
case OPTION_STATS:
config.stats = true;
break;
case OPTION_NO_SYMBOLIC:
opt_symbolic = symbolic_unset;
break;
case OPTION_SYMBOLIC:
opt_symbolic = symbolic;
break;

7
ld/testsuite/ld-elf/shared.exp
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@ -618,6 +618,10 @@ set build_tests {
{"Build libdl2k.so with --export-dynamic-symbol-list=dl2.list and -Bsymbolic"
"-shared -Wl,--export-dynamic-symbol-list=dl2.list,-Bsymbolic" "-fPIC"
{dl2.c dl2xxx.c} {} "libdl2k.so"}
# Check that -Bno-symbolic cancels -Bsymbolic.
{"Build libdl2l.so with -Bsymbolic -Bno-symbolic and --export-dynamic-symbol=foo"
"-shared -Wl,-Bsymbolic,-Bno-symbolic,--export-dynamic-symbol=foo" "-fPIC"
{dl2.c dl2xxx.c} {} "libdl2l.so"}
{"Build libdl4a.so with --dynamic-list=dl4.list"
"-shared -Wl,--dynamic-list=dl4.list" "-fPIC"
{dl4.c dl4xxx.c} {} "libdl4a.so"}
@ -1028,6 +1032,9 @@ set run_tests [list \
[list "Run with libdl2k.so" \
"-Wl,--no-as-needed tmpdir/libdl2k.so" "" \
{dl2main.c} "dl2k" "dl2a.out" ] \
[list "Run with libdl2l.so" \
"-Wl,--no-as-needed tmpdir/libdl2l.so" "" \
{dl2main.c} "dl2l" "dl2b.out" ] \
[list "Run with libdl4a.so" \
"-Wl,--no-as-needed tmpdir/libdl4a.so" "" \
{dl4main.c} "dl4a" "dl4a.out" "-fPIC"] \