[Mesa-dev] [PATCH 1/1] Fix endianess detection with musl-based toolchains

[Bernd Kuhls]

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/
Signed-off-by: Bernd Kuhls <bernd.kuhls at t-online.de>
---
 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 4761c59..7991b52 100644
--- a/configure.ac
+++ b/configure.ac
@@ -786,6 +786,7 @@ 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"])
 
diff --git a/src/amd/Makefile.addrlib.am b/src/amd/Makefile.addrlib.am
index 64823fc..4e2fb1d 100644
--- a/src/amd/Makefile.addrlib.am
+++ b/src/amd/Makefile.addrlib.am
@@ -28,6 +28,7 @@ addrlib_libamdgpu_addrlib_la_CPPFLAGS = \
 	-I$(srcdir)/addrlib/core \
 	-I$(srcdir)/addrlib/inc/chip/r800 \
 	-I$(srcdir)/addrlib/r800/chip \
+	$(DEFINES) \
 	-DBRAHMA_BUILD=1
 
 addrlib_libamdgpu_addrlib_la_CXXFLAGS = \
diff --git a/src/util/u_endian.h b/src/util/u_endian.h
index b9d563d..266fb4a 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)
+#if defined(__GLIBC__) || defined(ANDROID) || defined(HAVE_ENDIAN_H)
 #include <endian.h>
 
 #if __BYTE_ORDER == __LITTLE_ENDIAN
-- 
2.10.1