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powerpc: Use --no-tls-get-addr-optimize in test only if the linker supports it

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LLD doesn't support --{,no-}tls-get-addr-optimize.

Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
This commit is contained in:
Fangrui Song 2021-08-24 09:26:44 -07:00
parent 528f9ff6bf
commit f9cd7d5d19
3 changed files with 40 additions and 0 deletions
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2
sysdeps/unix/sysv/linux/powerpc/Makefile
View File

@ -14,8 +14,10 @@ endif
ifeq ($(subdir),elf)
# Otherwise tst-tls-dlinfo fails due to tst-tlsmod2.so using static tls.
ifeq ($(have-tls-get-addr-optimize),yes)
LDFLAGS-tst-tlsmod2.so += -Wl,--no-tls-get-addr-optimize
endif
endif
ifeq ($(subdir),misc)
sysdep_headers += bits/ppc.h

34
sysdeps/unix/sysv/linux/powerpc/configure vendored
View File

@ -76,4 +76,38 @@ $as_echo "$libc_cv_mabi_ibmlongdouble" >&6; }
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for linker that supports --no-tls-get-addr-optimize" >&5
$as_echo_n "checking for linker that supports --no-tls-get-addr-optimize... " >&6; }
libc_linker_feature=no
if test x"$gnu_ld" = x"yes"; then
libc_linker_check=`$LD -v --help 2>/dev/null | grep "\--no-tls-get-addr-optimize"`
if test -n "$libc_linker_check"; then
cat > conftest.c <<EOF
int _start (void) { return 42; }
EOF
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
-Wl,--no-tls-get-addr-optimize -nostdlib -nostartfiles
-fPIC -shared -o conftest.so conftest.c
1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
$as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }
then
libc_linker_feature=yes
fi
rm -f conftest*
fi
fi
if test $libc_linker_feature = yes; then
libc_cv_tls_get_addr_optimize=yes
else
libc_cv_tls_get_addr_optimize=no
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
$as_echo "$libc_linker_feature" >&6; }
config_vars="$config_vars
have-tls-get-addr-optimize = $libc_cv_tls_get_addr_optimize"
ldd_rewrite_script=sysdeps/unix/sysv/linux/powerpc/ldd-rewrite.sed

4
sysdeps/unix/sysv/linux/powerpc/configure.ac
View File

@ -36,4 +36,8 @@ long double foobar (long double x) { return x; }]])],
fi
fi
LIBC_LINKER_FEATURE([--no-tls-get-addr-optimize], [-Wl,--no-tls-get-addr-optimize],
[libc_cv_tls_get_addr_optimize=yes], [libc_cv_tls_get_addr_optimize=no])
LIBC_CONFIG_VAR([have-tls-get-addr-optimize], [$libc_cv_tls_get_addr_optimize])
ldd_rewrite_script=sysdeps/unix/sysv/linux/powerpc/ldd-rewrite.sed