From 735095ae9566b2b14e8210e5ed44b3d5b51495f1 Mon Sep 17 00:00:00 2001
From: Andreas Jaeger <aj@suse.de>
Date: Mon, 19 Mar 2012 21:00:15 +0100
Subject: Merge sysdeps/i386/elf/Versions into sysdeps/i386/Versions. Move
 sysdeps/i386/elf/start.S to sysdeps/i386/ Merge sysdeps/i386/elf/configure.in
 into sysdeps/i386/configure.in Delete merged files
 sysdeps/i386/elf/configure.in, sysdeps/i386/elf/Versions and
 sysdeps/i386/elf/configure.

---
 sysdeps/i386/configure.in | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'sysdeps/i386/configure.in')

diff --git a/sysdeps/i386/configure.in b/sysdeps/i386/configure.in
index f769019acf..ec69080eb6 100644
--- a/sysdeps/i386/configure.in
+++ b/sysdeps/i386/configure.in
@@ -97,3 +97,37 @@ if AC_TRY_COMMAND([${CC-cc} -mno-vzeroupper -xc /dev/null -S -o /dev/null]); the
 else
   libc_cv_cc_novzeroupper=no
 fi])
+
+# Check for support of thread-local storage handling in assembler and
+# linker.
+AC_CACHE_CHECK(for i386 TLS support, libc_cv_386_tls, [dnl
+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	$bar@TPOFF, %eax
+	movl	foo@GOTNTPOFF(%edx), %ecx
+	movl	%gs:(%ecx), %eax
+	movl	%gs:bar@NTPOFF, %eax
+EOF
+dnl
+if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
+  libc_cv_386_tls=yes
+else
+  libc_cv_386_tls=no
+fi
+rm -f conftest*])
+if test $libc_cv_386_tls = no; then
+  AC_MSG_ERROR([the assembler must support TLS])
+fi
+
+dnl It is always possible to access static and hidden symbols in an
+dnl position independent way.
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
-- 
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