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-rw-r--r--sysdeps/i386/configure44
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/i386/configure b/sysdeps/i386/configure
index baa66096a6..e60b4982e4 100644
--- a/sysdeps/i386/configure
+++ b/sysdeps/i386/configure
@@ -348,3 +348,47 @@ fi
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_novzeroupper" >&5
 $as_echo "$libc_cv_cc_novzeroupper" >&6; }
+
+# Check for support of thread-local storage handling in assembler and
+# linker.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for i386 TLS support" >&5
+$as_echo_n "checking for i386 TLS support... " >&6; }
+if ${libc_cv_386_tls+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat > conftest.s <<\EOF
+	.section ".tdata", "awT", @progbits
+	.globl foo
+foo:	.long	1
+	.section ".tbss", "awT", @nobits
+	.globl bar
+bar:	.skip	4
+	.text
+baz:	leal	bar@TLSLDM(%ebx), %eax
+	leal	bar@DTPOFF(%eax), %edx
+	subl	foo@GOTTPOFF(%edx), %eax
+	subl	$bar@TPOFF, %eax
+	movl	foo@GOTNTPOFF(%edx), %ecx
+	movl	%gs:(%ecx), %eax
+	movl	%gs:bar@NTPOFF, %eax
+EOF
+if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'
+  { { eval echo "\"\$as_me\":${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_cv_386_tls=yes
+else
+  libc_cv_386_tls=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_386_tls" >&5
+$as_echo "$libc_cv_386_tls" >&6; }
+if test $libc_cv_386_tls = no; then
+  as_fn_error $? "the assembler must support TLS" "$LINENO" 5
+fi
+
+$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+