From 5b8f26b4cd59fd66b99ba32275c179a22adb757c Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Thu, 17 Oct 2002 22:06:48 +0000
Subject: 2002-10-17  Roland McGrath  <roland@redhat.com>

	* configure.in: Grok --without-__thread and disable HAVE___THREAD.
	* configure: Regenerated.
---
 configure.in | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 89830313a1..5ed4faa1f7 100644
--- a/configure.in
+++ b/configure.in
@@ -145,6 +145,10 @@ AC_ARG_WITH(tls, dnl
 [  --with-tls              enable support for TLS],
 	    usetls=$withval, usetls=no)
 
+AC_ARG_WITH(__thread, dnl
+[  --without-__thread      do not use TLS features even when supporting them],
+	    use__thread=$withval, use__thread=yes)
+
 AC_ARG_ENABLE(hidden-plt, dnl
 [  --disable-hidden-plt    do not hide internal function calls to avoid PLT],
 	      hidden=$enableval, hidden=yes)
@@ -1610,19 +1614,23 @@ if test "$libc_cv_gcc_subtract_local_labels" = yes; then
 fi
 
 dnl Check whether the compiler supports the __thread keyword.
-AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread,
-[cat > conftest.c <<\EOF
-__thread int a = 42;
-EOF
-if AC_TRY_COMMAND([${CC-cc} $CFLAGS -c conftest.c >&AC_FD_CC]); then
-  libc_cv_gcc___thread=yes
+if test "x$use__thread" != xno; then
+  AC_CACHE_CHECK([for __thread], libc_cv_gcc___thread,
+  [cat > conftest.c <<\EOF
+  __thread int a = 42;
+  EOF
+  if AC_TRY_COMMAND([${CC-cc} $CFLAGS -c conftest.c >&AC_FD_CC]); then
+    libc_cv_gcc___thread=yes
+  else
+    libc_cv_gcc___thread=no
+  fi
+  rm -f conftest*])
+  if test "$libc_cv_gcc___thread" = yes; then
+    AC_DEFINE(HAVE___THREAD)
+  fi
 else
   libc_cv_gcc___thread=no
 fi
-rm -f conftest*])
-if test "$libc_cv_gcc___thread" = yes; then
-  AC_DEFINE(HAVE___THREAD)
-fi
 
 if test "$libc_cv_gcc___thread" = yes; then
   dnl Check whether the compiler supports the tls_model attribute.
-- 
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