[glibc] Check if linker also support -mtls-dialect=gnu2

[glibc] Check if linker also support -mtls-dialect=gnu2

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=04e8169f1d0397b1ffc77fbb49f4344f1ae53a82

commit 04e8169f1d0397b1ffc77fbb49f4344f1ae53a82
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Tue Oct 26 10:58:50 2021 -0300

    Check if linker also support -mtls-dialect=gnu2
    
    Since some linkers (for instance lld for i386) does not support it
    for all architectures.
    
    Checked on i686-linux-gnu.
    
    Reviewed-by: Fangrui Song <maskray@google.com>

Diff:
---
 configure    | 4 ++--
 configure.ac | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index 367db1c1ac..2f9adca064 100755
--- a/configure
+++ b/configure
@@ -6312,8 +6312,8 @@ void foo (void)
   i = 10;
 }
 EOF
-if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -S -fPIC -mtls-dialect=gnu2
-		   conftest.c 1>&5'
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nostartfiles
+		   conftest.c -o conftest 1>&5'
   { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
   (eval $ac_try) 2>&5
   ac_status=$?
diff --git a/configure.ac b/configure.ac
index 00f49f09f7..7eb4239359 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1493,8 +1493,8 @@ void foo (void)
   i = 10;
 }
 EOF
-if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -S -fPIC -mtls-dialect=gnu2
-		   conftest.c 1>&AS_MESSAGE_LOG_FD])
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -fPIC -mtls-dialect=gnu2 -nostdlib -nostartfiles
+		   conftest.c -o conftest 1>&AS_MESSAGE_LOG_FD])
 then
   libc_cv_mtls_dialect_gnu2=yes
 else