From 65829504073425362fc56995a1dcc8cc464b751a Mon Sep 17 00:00:00 2001
From: =?utf8?q?S=C3=B8ren=20Sandmann=20Pedersen?= <ssp@redhat.com>
Date: Sat, 28 Sep 2013 01:03:55 -0400
Subject: [PATCH] Rename HAVE_PTHREAD_SETSPECIFIC to HAVE_PTHREADS

The test for pthread_setspecific() can be used as a general test for
whether pthreads are available, so rename the variable from
HAVE_PTHREAD_SETSPECIFIC to HAVE_PTHREADS and run the test even when
better support for thread local variables are available.

However, the pthread arguments are still only added to CFLAGS and
LDFLAGS when pthread_setspecific() is used for thread local variables.

V2: AC_SUBST(PTHREAD_CFLAGS)
---
 configure.ac             | 29 +++++++++++++++--------------
 pixman/pixman-compiler.h |  2 +-
 2 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/configure.ac b/configure.ac
index 263c63e..2dd4776 100644
--- a/configure.ac
+++ b/configure.ac
@@ -961,37 +961,38 @@ main ()
 ]]))
 
 AC_DEFUN([PIXMAN_CHECK_PTHREAD],[dnl
-    if test "z$support_for_pthread_setspecific" != "zyes"; then
+    if test "z$support_for_pthreads" != "zyes"; then
 	PIXMAN_LINK_WITH_ENV(
 		[$1], [pthread_test_program],
 		[PTHREAD_CFLAGS="$CFLAGS"
 		 PTHREAD_LIBS="$LIBS"
 		 PTHREAD_LDFLAGS="$LDFLAGS"
-		 support_for_pthread_setspecific=yes])
+		 support_for_pthreads=yes])
     fi
 ])
 
-if test $ac_cv_tls = none ; then
-    support_for_pthread_setspecific=no
+support_for_pthreads=no
 
-    AC_MSG_CHECKING(for pthread_setspecific)
+AC_MSG_CHECKING(for pthreads)
 
-    PIXMAN_CHECK_PTHREAD([CFLAGS="-pthread"; LDFLAGS="-pthread"])
-    PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LIBS="-lpthread"])
-    PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LDFLAGS="-lroot"])
+PIXMAN_CHECK_PTHREAD([CFLAGS="-pthread"; LDFLAGS="-pthread"])
+PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LIBS="-lpthread"])
+PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LDFLAGS="-lroot"])
     
-    if test $support_for_pthread_setspecific = yes; then
-	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-	AC_DEFINE([HAVE_PTHREAD_SETSPECIFIC], [], [Whether pthread_setspecific() is supported])
+if test $support_for_pthreads = yes; then
+    AC_DEFINE([HAVE_PTHREADS], [], [Whether pthreads is supported])
+    if test $ac_cv_tls = none ; then
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
     fi
-
-    AC_MSG_RESULT($support_for_pthread_setspecific);
 fi
 
+AC_MSG_RESULT($support_for_pthreads)
+
 AC_SUBST(TOOLCHAIN_SUPPORTS__THREAD)
-AC_SUBST(HAVE_PTHREAD_SETSPECIFIC)
+AC_SUBST(HAVE_PTHREADS)
 AC_SUBST(PTHREAD_LDFLAGS)
 AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
 
 dnl =====================================
 dnl __attribute__((constructor))
diff --git a/pixman/pixman-compiler.h b/pixman/pixman-compiler.h
index 9b190b4..2489adc 100644
--- a/pixman/pixman-compiler.h
+++ b/pixman/pixman-compiler.h
@@ -178,7 +178,7 @@
 #   define PIXMAN_GET_THREAD_LOCAL(name)				\
     (&name)
 
-#elif defined(HAVE_PTHREAD_SETSPECIFIC)
+#elif defined(HAVE_PTHREADS)
 
 #include <pthread.h>
 
-- 
2.7.4