summaryrefslogtreecommitdiff
path: root/recipes/util-linux-ng/util-linux-ng-2.17/tls.patch
blob: bdb29cae1f42e6f30ea6b380b6d3629988176a9c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Index: util-linux-ng-2.16/m4/tls.m4
===================================================================
--- util-linux-ng-2.16.orig/m4/tls.m4	2009-07-04 01:20:03.000000000 +0200
+++ util-linux-ng-2.16/m4/tls.m4	2009-07-30 01:57:30.151697033 +0200
@@ -18,31 +18,26 @@
 # version as well.
 #
 AC_DEFUN([AX_TLS], [
-  AC_MSG_CHECKING(for thread local storage (TLS) class)
-  AC_CACHE_VAL(ac_cv_tls, [
-    ax_tls_keywords="__thread __declspec(thread) none"
-    for ax_tls_keyword in $ax_tls_keywords; do
-       case $ax_tls_keyword in
-          none) ac_cv_tls=none ; break ;;
-          *)
-             AC_TRY_COMPILE(
-                [#include <stdlib.h>
-                 static void
-                 foo(void) {
-                 static ] $ax_tls_keyword [ int bar;
-                 exit(1);
-                 }],
-                 [],
-                 [ac_cv_tls=$ax_tls_keyword ; break],
-                 ac_cv_tls=none
-             )
-          esac
-    done
-])
+  AC_CACHE_CHECK([for thread local storage (TLS) class],
+    ac_cv_tls,
+    [AC_LINK_IFELSE([__thread int a; int b; int main() { return a = b; }],
+	 [chktls_save_LDFLAGS="$LDFLAGS"
+	  LDFLAGS="-shared -Wl,--no-undefined $LDFLAGS"
+	  chktls_save_CFLAGS="$CFLAGS"
+	  CFLAGS="-fPIC $CFLAGS"
+	  dnl If -shared works, test if TLS works in a shared library.
+	  AC_LINK_IFELSE([int f() { return 0; }],
+	    AC_LINK_IFELSE([__thread int a; int b; int f() { return a = b; }],
+	      [ac_cv_tls=yes],
+	      [ac_cv_tls=no]),
+	    [ac_cv_tls=yes])
+	  CFLAGS="$chktls_save_CFLAGS"
+	  LDFLAGS="$chktls_save_LDFLAGS"], [ac_cv_tls=no])
+    ])
 
-  if test "$ac_cv_tls" != "none"; then
-    dnl AC_DEFINE([TLS], [], [If the compiler supports a TLS storage class define it to that here])
-    AC_DEFINE_UNQUOTED([TLS], $ac_cv_tls, [If the compiler supports a TLS storage class define it to that here])
-  fi
-  AC_MSG_RESULT($ac_cv_tls)
+  AS_IF([test "x$ac_cv_tls" = "xyes"],
+    [AC_DEFINE([TLS], 1,
+     [Define this if the compiler supports __thread for Thread-Local Storage])
+     $1],
+    [$2])
 ])
Index: util-linux-ng-2.16/shlibs/uuid/src/gen_uuid.c
===================================================================
--- util-linux-ng-2.16.orig/shlibs/uuid/src/gen_uuid.c	2009-07-30 02:31:48.518159459 +0200
+++ util-linux-ng-2.16/shlibs/uuid/src/gen_uuid.c	2009-07-30 02:32:04.867871183 +0200
@@ -99,7 +99,7 @@
 #endif
 
 #ifdef TLS
-#define THREAD_LOCAL static TLS
+#define THREAD_LOCAL static __thread
 #else
 #define THREAD_LOCAL static
 #endif