meson/configure: detect endian.h instead of trying to guess when it's available

Cc: Maxin B. John <maxin.john@gmail.com>
Cc: Khem Raj <raj.khem@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Suggested-by: Jon Turney <jon.turney@dronecode.org.uk>
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Cc: <mesa-stable@lists.freedesktop.org>

Android.common.mk

@@ -70,6 +70,7 @@ LOCAL_CFLAGS += \
 	-DHAVE_DLADDR \
 	-DHAVE_DL_ITERATE_PHDR \
 	-DHAVE_LINUX_FUTEX_H \
+	-DHAVE_ENDIAN_H \
 	-DHAVE_ZLIB \
 	-DMAJOR_IN_SYSMACROS \
 	-fvisibility=hidden \

configure.ac

@@ -865,6 +865,7 @@ 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="$DEFINES -DHAVE_MKOSTEMP"])
 AC_CHECK_FUNC([timespec_get], [DEFINES="$DEFINES -DHAVE_TIMESPEC_GET"])

meson.build

@@ -916,7 +916,7 @@ elif cc.has_header_symbol('sys/mkdev.h', 'major')
   pre_args += '-DMAJOR_IN_MKDEV'
 endif
 
-foreach h : ['xlocale.h', 'sys/sysctl.h', 'linux/futex.h']
+foreach h : ['xlocale.h', 'sys/sysctl.h', 'linux/futex.h', 'endian.h']
   if cc.compiles('#include <@0@>'.format(h), name : '@0@ works'.format(h))
     pre_args += '-DHAVE_@0@'.format(h.to_upper().underscorify())
   endif

scons/gallium.py

@@ -354,6 +354,9 @@ def generate(env):
         if check_header(env, 'xlocale.h'):
             cppdefines += ['HAVE_XLOCALE_H']
 
+        if check_header(env, 'endian.h'):
+            cppdefines += ['HAVE_ENDIAN_H']
+
         if check_functions(env, ['strtod_l', 'strtof_l']):
             cppdefines += ['HAVE_STRTOD_L']
 

src/util/u_endian.h

@@ -27,7 +27,7 @@
 #ifndef U_ENDIAN_H
 #define U_ENDIAN_H
 
-#if defined(__GLIBC__) || defined(ANDROID) || defined(__CYGWIN__)
+#ifdef HAVE_ENDIAN_H
 #include <endian.h>
 
 #if __BYTE_ORDER == __LITTLE_ENDIAN