buildroot/package/mesa3d/0002-Fix-endianess-detection-with-musl-based-toolchains.patch

From 4135bd2e13880866deb0440855d1a869397e5024 Mon Sep 17 00:00:00 2001
From: Bernd Kuhls <bernd.kuhls@t-online.de>
Date: Fri, 4 Nov 2016 19:44:37 +0100
Subject: [PATCH] Fix endianess detection with musl-based toolchains

Musl does not define __GLIBC__ and will not provide a __MUSL__ macro:
http://wiki.musl-libc.org/wiki/FAQ#Q:_why_is_there_no_MUSL_macro_.3F

This patch checks for the presence of endian.h and promotes the result
to src/amd/Makefile.addrlib.am which executes the broken build command.
Fixes compile errors detected by the autobuilder infrastructure of the
buildroot project:

http://autobuild.buildroot.net/results/e27/e27a9a95f72dba3076549beb2a2ccfdbea2fcfee/
http://autobuild.buildroot.net/results/e27/e27a9a95f72dba3076549beb2a2ccfdbea2fcfee/

Patch sent upstream: https://patchwork.freedesktop.org/patch/119961/

[Bernd: rebase on mesa 18.0.0]
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
[Romain: rebase on mesa 17.3.1]
Signed-off-by: Romain Naour <romain.naour@gmail.com>
---
 configure.ac                | 1 +
 src/amd/Makefile.addrlib.am | 1 +
 src/util/u_endian.h         | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index a02173f244..ee03d6f582 100644
--- a/configure.ac
+++ b/configure.ac
@@ -791,6 +791,7 @@ fi
 AC_HEADER_MAJOR
 AC_CHECK_HEADER([xlocale.h], [DEFINES="$DEFINES -DHAVE_XLOCALE_H"])
 AC_CHECK_HEADER([sys/sysctl.h], [DEFINES="$DEFINES -DHAVE_SYS_SYSCTL_H"])
+AC_CHECK_HEADER([endian.h], [DEFINES="$DEFINES -DHAVE_ENDIAN_H"])
 AC_CHECK_FUNC([strtof], [DEFINES="$DEFINES -DHAVE_STRTOF"])
 AC_CHECK_FUNC([mkostemp], [DEFINES="$DEFINES -DHAVE_MKOSTEMP"])
 AC_CHECK_FUNC([memfd_create], [DEFINES="$DEFINES -DHAVE_MEMFD_CREATE"])
diff --git a/src/amd/Makefile.addrlib.am b/src/amd/Makefile.addrlib.am
index 46689637f9..508edfd0d5 100644
--- a/src/amd/Makefile.addrlib.am
+++ b/src/amd/Makefile.addrlib.am
@@ -29,7 +29,8 @@
 	-I$(srcdir)/addrlib/inc/chip/gfx9 \
 	-I$(srcdir)/addrlib/inc/chip/r800 \
 	-I$(srcdir)/addrlib/gfx9/chip \
-	-I$(srcdir)/addrlib/r800/chip
+	-I$(srcdir)/addrlib/r800/chip \
+	$(DEFINES)
 
 addrlib_libamdgpu_addrlib_la_CXXFLAGS = \
 	$(VISIBILITY_CXXFLAGS) $(CXX11_CXXFLAGS)
diff --git a/src/util/u_endian.h b/src/util/u_endian.h
index 9e09f80181..038a28fac9 100644
--- a/src/util/u_endian.h
+++ b/src/util/u_endian.h
@@ -27,7 +27,7 @@
 #ifndef U_ENDIAN_H
 #define U_ENDIAN_H
 
-#if defined(__GLIBC__) || defined(ANDROID) || defined(__CYGWIN__)
+#if defined(__GLIBC__) || defined(ANDROID) || defined(__CYGWIN__) || defined(HAVE_ENDIAN_H)
 #include <endian.h>
 
 #if __BYTE_ORDER == __LITTLE_ENDIAN
-- 
2.14.3