|
|
@@ -1339,6 +1339,44 @@ dnl SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-simd*.c"
|
|
|
fi
|
|
|
}
|
|
|
|
|
|
+dnl Check for ARM NEON instruction support using gas syntax
|
|
|
+CheckNEON()
|
|
|
+{
|
|
|
+ AC_ARG_ENABLE(arm-neon,
|
|
|
+AC_HELP_STRING([--enable-arm-neon], [use NEON assembly blitters on ARM [[default=yes]]]),
|
|
|
+ enable_arm_neon=$enableval, enable_arm_neon=yes)
|
|
|
+ if test x$enable_video = xyes -a x$enable_assembly = xyes -a x$enable_arm_neon = xyes; then
|
|
|
+ save_CFLAGS="$CFLAGS"
|
|
|
+ have_arm_neon=no
|
|
|
+ CFLAGS="-x assembler-with-cpp $CFLAGS"
|
|
|
+
|
|
|
+ AC_MSG_CHECKING(for ARM NEON)
|
|
|
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
|
|
|
+ .text
|
|
|
+ .fpu neon
|
|
|
+ .arch armv7a
|
|
|
+ .object_arch armv4
|
|
|
+ .eabi_attribute 10, 0
|
|
|
+ .arm
|
|
|
+ .altmacro
|
|
|
+ #ifndef __ARM_EABI__
|
|
|
+ #error EABI is required (to be sure that calling conventions are compatible)
|
|
|
+ #endif
|
|
|
+ pld [r0]
|
|
|
+ vmovn.u16 d0, q0
|
|
|
+ ]])], have_arm_neon=yes)
|
|
|
+ AC_MSG_RESULT($have_arm_neon)
|
|
|
+
|
|
|
+ CFLAGS="$save_CFLAGS"
|
|
|
+
|
|
|
+ if test x$have_arm_neon = xyes; then
|
|
|
+ AC_DEFINE(SDL_ARM_NEON_BLITTERS)
|
|
|
+dnl SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-neon*.c"
|
|
|
+ SOURCES="$SOURCES $srcdir/src/video/arm/pixman-arm-neon*.S"
|
|
|
+ fi
|
|
|
+ fi
|
|
|
+}
|
|
|
+
|
|
|
dnl See if GCC's -fvisibility=hidden is supported (gcc4 and later, usually).
|
|
|
dnl Details of this flag are here: http://gcc.gnu.org/wiki/Visibility
|
|
|
CheckVisibilityHidden()
|
|
|
@@ -3433,6 +3471,7 @@ case "$host" in
|
|
|
CheckDummyAudio
|
|
|
CheckDLOPEN
|
|
|
CheckARM
|
|
|
+ CheckNEON
|
|
|
CheckOSS
|
|
|
CheckALSA
|
|
|
CheckPulseAudio
|
Ben Avison