mesa: Fix building with musl

backport needed patches
add a patch to use _NP macros only on glibc
based linux and not on all linux

Change-Id: Ib43bec9d222856f8e7acb9f0143b406517f049c8
(From OE-Core rev: 7dcd8f532fef71e711bf11a00f0e246a36b6138a)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-graphics/mesa/mesa/0001-PTHREAD_MUTEX_RECURSIVE_NP-is-specific-to-glibc.patch

@@ -0,0 +1,29 @@
+From 46cdd464efbada13478f5e39a50aef85599ff91b Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 4 Apr 2015 15:50:53 -0700
+Subject: [PATCH 1/2] PTHREAD_MUTEX_RECURSIVE_NP is specific to glibc
+
+use glibc guard around it
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+Upstream-Status: Pending
+---
+ include/c11/threads_posix.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/c11/threads_posix.h b/include/c11/threads_posix.h
+index f9c165d..c641de4 100644
+--- a/include/c11/threads_posix.h
++++ b/include/c11/threads_posix.h
+@@ -178,7 +178,7 @@ mtx_init(mtx_t *mtx, int type)
+         return thrd_error;
+     pthread_mutexattr_init(&attr);
+     if ((type & mtx_recursive) != 0) {
+-#if defined(__linux__) || defined(__linux)
++#if defined __GLIBC__ && (defined(__linux__) || defined(__linux))
+         pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
+ #else
+         pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+-- 
+2.1.4
+

meta/recipes-graphics/mesa/mesa/0002-mesa-simplify-detection-of-fpclassify.patch

@@ -0,0 +1,53 @@
+From c09606093c6b8e47d7cb6745eff192184eaaae07 Mon Sep 17 00:00:00 2001
+From: Felix Janda <felix.janda@posteo.de>
+Date: Fri, 23 Jan 2015 17:57:15 +0100
+Subject: [PATCH 2/2] mesa: simplify detection of fpclassify
+
+Fixes compilation with musl libc.
+
+Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
+Upstream-Status: Backport
+---
+ src/mesa/main/querymatrix.c | 18 +++++++-----------
+ 1 file changed, 7 insertions(+), 11 deletions(-)
+
+diff --git a/src/mesa/main/querymatrix.c b/src/mesa/main/querymatrix.c
+index eb36c76..ef85175 100644
+--- a/src/mesa/main/querymatrix.c
++++ b/src/mesa/main/querymatrix.c
+@@ -37,8 +37,12 @@
+ #define INT_TO_FIXED(x) ((GLfixed) ((x) << 16))
+ #define FLOAT_TO_FIXED(x) ((GLfixed) ((x) * 65536.0))
+ 
+-#if defined(_MSC_VER)
+-#if _MSC_VER < 1800  /* Not required on VS2013 and above. */
++#if defined(fpclassify)
++/* ISO C99 says that fpclassify is a macro.  Assume that any implementation
++ * of fpclassify, whether it's in a C99 compiler or not, will be a macro.
++ */
++#elif defined(_MSC_VER)
++/* Not required on VS2013 and above. */
+ /* Oddly, the fpclassify() function doesn't exist in such a form
+  * on MSVC.  This is an implementation using slightly different
+  * lower-level Windows functions.
+@@ -71,16 +75,8 @@ fpclassify(double x)
+             return FP_NAN;
+     }
+ }
+-#endif  /* _MSC_VER < 1800 */
+-
+-#elif defined(__APPLE__) || defined(__CYGWIN__) || defined(__FreeBSD__) || \
+-     defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \
+-     (defined(__sun) && defined(__C99FEATURES__)) || defined(__MINGW32__) || \
+-     (defined(__sun) && defined(__GNUC__)) || defined(ANDROID) || defined(__HAIKU__)
+-
+-/* fpclassify is available. */
+ 
+-#elif !defined(_XOPEN_SOURCE) || _XOPEN_SOURCE < 600
++#else
+ 
+ enum {FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL, FP_NORMAL}
+ fpclassify(double x)
+-- 
+2.1.4
+

meta/recipes-graphics/mesa/mesa_10.4.4.bb

@@ -1,6 +1,9 @@
 require ${BPN}.inc
 
-SRC_URI = "ftp://ftp.freedesktop.org/pub/mesa/${PV}/MesaLib-${PV}.tar.bz2"
+SRC_URI = "ftp://ftp.freedesktop.org/pub/mesa/${PV}/MesaLib-${PV}.tar.bz2 \
+           file://0001-PTHREAD_MUTEX_RECURSIVE_NP-is-specific-to-glibc.patch \
+	   file://0002-mesa-simplify-detection-of-fpclassify.patch \
+          "
 
 SRC_URI[md5sum] = "62faf98ac79c5587f8e917e187419e6c"
 SRC_URI[sha256sum] = "f18a967e9c4d80e054b2fdff8c130ce6e6d1f8eecfc42c9f354f8628d8b4df1c"