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 --git a/configure b/configure
index 367db1c1acb3ad13c2cfa6ce905a067a218bdb78..2f9adca0641e66cfff65d43bcf1cad7e6d9eda84 100755 (executable)
--- 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 00f49f09f70c2343c664c2bbf9f7a0d5f99f0565..7eb42393599235e83d2bb6fb1d32e8407a297f17 100644 (file)
--- 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