Create local copy of Opus v1.1.2

webrtc/modules/audio_coding/codecs/opus/opus/src/configure.ac

Index: webrtc/modules/audio_coding/codecs/opus/opus/src/configure.ac
diff --git a/webrtc/modules/audio_coding/codecs/opus/opus/src/configure.ac b/webrtc/modules/audio_coding/codecs/opus/opus/src/configure.ac
new file mode 100644
index 0000000000000000000000000000000000000000..a67aa37ad1d83675a46926ee3b304fd850ef4213
--- /dev/null
+++ b/webrtc/modules/audio_coding/codecs/opus/opus/src/configure.ac
@@ -0,0 +1,831 @@
+dnl Process this file with autoconf to produce a configure script. -*-m4-*-
+
+dnl The package_version file will be automatically synced to the git revision
+dnl by the update_version script when configured in the repository, but will
+dnl remain constant in tarball releases unless it is manually edited.
+m4_define([CURRENT_VERSION],
+          m4_esyscmd([ ./update_version 2>/dev/null || true
+                       if test -e package_version; then
+                           . ./package_version
+                           printf "$PACKAGE_VERSION"
+                       else
+                           printf "unknown"
+                       fi ]))
+
+AC_INIT([opus],[CURRENT_VERSION],[opus@xiph.org])
+
+AC_CONFIG_SRCDIR(src/opus_encoder.c)
+AC_CONFIG_MACRO_DIR([m4])
+
+dnl enable silent rules on automake 1.11 and later
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
+# For libtool.
+dnl Please update these for releases.
+OPUS_LT_CURRENT=5
+OPUS_LT_REVISION=2
+OPUS_LT_AGE=5
+
+AC_SUBST(OPUS_LT_CURRENT)
+AC_SUBST(OPUS_LT_REVISION)
+AC_SUBST(OPUS_LT_AGE)
+
+AM_INIT_AUTOMAKE([no-define])
+AM_MAINTAINER_MODE([enable])
+
+AC_CANONICAL_HOST
+AC_MINGW32
+AM_PROG_LIBTOOL
+AM_PROG_CC_C_O
+
+AC_PROG_CC_C99
+AC_C_CONST
+AC_C_INLINE
+
+AM_PROG_AS
+
+AC_DEFINE([OPUS_BUILD], [], [This is a build of OPUS])
+
+#Use a hacked up version of autoconf's AC_C_RESTRICT because it's not
+#strong enough a test to detect old buggy versions of GCC (e.g. 2.95.3)
+#Note: Both this and the test for variable-size arrays below are also
+#      done by AC_PROG_CC_C99, but not thoroughly enough apparently.
+AC_CACHE_CHECK([for C/C++ restrict keyword], ac_cv_c_restrict,
+  [ac_cv_c_restrict=no
+   # The order here caters to the fact that C++ does not require restrict.
+   for ac_kw in __restrict __restrict__ _Restrict restrict; do
+     AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+      [[typedef int * int_ptr;
+        int foo (int_ptr $ac_kw ip, int * $ac_kw baz[]) {
+        return ip[0];
+       }]],
+      [[int s[1];
+        int * $ac_kw t = s;
+        t[0] = 0;
+        return foo(t, (void *)0)]])],
+      [ac_cv_c_restrict=$ac_kw])
+     test "$ac_cv_c_restrict" != no && break
+   done
+  ])
+
+AH_VERBATIM([restrict],
+[/* Define to the equivalent of the C99 'restrict' keyword, or to
+   nothing if this is not supported.  Do not define if restrict is
+   supported directly.  */
+#undef restrict
+/* Work around a bug in Sun C++: it does not support _Restrict or
+   __restrict__, even though the corresponding Sun C compiler ends up with
+   "#define restrict _Restrict" or "#define restrict __restrict__" in the
+   previous line.  Perhaps some future version of Sun C++ will work with
+   restrict; if so, hopefully it defines __RESTRICT like Sun C does.  */
+#if defined __SUNPRO_CC && !defined __RESTRICT
+# define _Restrict
+# define __restrict__
+#endif])
+
+case $ac_cv_c_restrict in
+   restrict) ;;
+   no) AC_DEFINE([restrict], []) ;;
+   *)  AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
+esac
+
+AC_MSG_CHECKING(for C99 variable-size arrays)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
+                   [[static int x; char a[++x]; a[sizeof a - 1] = 0; int N; return a[0];]])],
+    [ has_var_arrays=yes
+      use_alloca="no (using var arrays)"
+      AC_DEFINE([VAR_ARRAYS], [1], [Use C99 variable-size arrays])
+    ],[
+      has_var_arrays=no
+    ])
+AC_MSG_RESULT([$has_var_arrays])
+
+AS_IF([test "$has_var_arrays" = "no"],
+  [
+   AC_CHECK_HEADERS([alloca.h])
+   AC_MSG_CHECKING(for alloca)
+   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alloca.h>]],
+                                      [[int foo=10; int *array = alloca(foo);]])],
+     [ use_alloca=yes;
+       AC_DEFINE([USE_ALLOCA], [], [Make use of alloca])
+     ],[
+       use_alloca=no
+     ])
+   AC_MSG_RESULT([$use_alloca])
+  ])
+
+LT_LIB_M
+
+AC_ARG_ENABLE([fixed-point],
+    [AS_HELP_STRING([--enable-fixed-point],
+                    [compile without floating point (for machines without a fast enough FPU)])],,
+    [enable_fixed_point=no])
+
+AS_IF([test "$enable_fixed_point" = "yes"],[
+  enable_float="no"
+  AC_DEFINE([FIXED_POINT], [1], [Compile as fixed-point (for machines without a fast enough FPU)])
+  PC_BUILD="fixed-point"
+],[
+  enable_float="yes";
+  PC_BUILD="floating-point"
+])
+
+AM_CONDITIONAL([FIXED_POINT], [test "$enable_fixed_point" = "yes"])
+
+AC_ARG_ENABLE([fixed-point-debug],
+    [AS_HELP_STRING([--enable-fixed-point-debug], [debug fixed-point implementation])],,
+    [enable_fixed_point_debug=no])
+
+AS_IF([test "$enable_fixed_point_debug" = "yes"],[
+  AC_DEFINE([FIXED_DEBUG], [1], [Debug fixed-point implementation])
+])
+
+AC_ARG_ENABLE([float_api],
+    [AS_HELP_STRING([--disable-float-api],
+                    [compile without the floating point API (for machines with no float library)])],,
+    [enable_float_api=yes])
+
+AM_CONDITIONAL([DISABLE_FLOAT_API], [test "$enable_float_api" = "no"])
+
+AS_IF([test "$enable_float_api" = "no"],[
+  AC_DEFINE([DISABLE_FLOAT_API], [1], [Do not build the float API])
+])
+
+AC_ARG_ENABLE([custom-modes],
+    [AS_HELP_STRING([--enable-custom-modes], [enable non-Opus modes, e.g. 44.1 kHz & 2^n frames])],,
+    [enable_custom_modes=no])
+
+AS_IF([test "$enable_custom_modes" = "yes"],[
+  AC_DEFINE([CUSTOM_MODES], [1], [Custom modes])
+  PC_BUILD="$PC_BUILD, custom modes"
+])
+
+AM_CONDITIONAL([CUSTOM_MODES], [test "$enable_custom_modes" = "yes"])
+
+has_float_approx=no
+#case "$host_cpu" in
+#i[[3456]]86 | x86_64 | powerpc64 | powerpc32 | ia64)
+#  has_float_approx=yes
+#  ;;
+#esac
+
+AC_ARG_ENABLE([float-approx],
+    [AS_HELP_STRING([--enable-float-approx], [enable fast approximations for floating point])],
+    [if test "$enable_float_approx" = "yes"; then
+       AC_WARN([Floating point approximations are not supported on all platforms.])
+     fi
+    ],
+    [enable_float_approx=$has_float_approx])
+
+AS_IF([test "$enable_float_approx" = "yes"],[
+  AC_DEFINE([FLOAT_APPROX], [1], [Float approximations])
+])
+
+AC_ARG_ENABLE([asm],
+    [AS_HELP_STRING([--disable-asm], [Disable assembly optimizations])],,
+    [enable_asm=yes])
+
+AC_ARG_ENABLE([rtcd],
+    [AS_HELP_STRING([--disable-rtcd], [Disable run-time CPU capabilities detection])],,
+    [enable_rtcd=yes])
+
+AC_ARG_ENABLE([intrinsics],
+    [AS_HELP_STRING([--enable-intrinsics], [Enable intrinsics optimizations for ARM(float) X86(fixed)])],,
+    [enable_intrinsics=no])
+
+rtcd_support=no
+cpu_arm=no
+
+AS_IF([test x"${enable_asm}" = x"yes"],[
+    inline_optimization="No inline ASM for your platform, please send patches"
+    case $host_cpu in
+      arm*)
+        dnl Currently we only have asm for fixed-point
+        AS_IF([test "$enable_float" != "yes"],[
+            cpu_arm=yes
+            AC_DEFINE([OPUS_ARM_ASM], [],  [Make use of ARM asm optimization])
+            AS_GCC_INLINE_ASSEMBLY(
+                [inline_optimization="ARM"],
+                [inline_optimization="disabled"]
+            )
+            AS_ASM_ARM_EDSP([OPUS_ARM_INLINE_EDSP=1],[OPUS_ARM_INLINE_EDSP=0])
+            AS_ASM_ARM_MEDIA([OPUS_ARM_INLINE_MEDIA=1],
+                [OPUS_ARM_INLINE_MEDIA=0])
+            AS_ASM_ARM_NEON([OPUS_ARM_INLINE_NEON=1],[OPUS_ARM_INLINE_NEON=0])
+            AS_IF([test x"$inline_optimization" = x"ARM"],[
+                AM_CONDITIONAL([OPUS_ARM_INLINE_ASM],[true])
+                AC_DEFINE([OPUS_ARM_INLINE_ASM], 1,
+                    [Use generic ARMv4 inline asm optimizations])
+                AS_IF([test x"$OPUS_ARM_INLINE_EDSP" = x"1"],[
+                    AC_DEFINE([OPUS_ARM_INLINE_EDSP], [1],
+                        [Use ARMv5E inline asm optimizations])
+                    inline_optimization="$inline_optimization (EDSP)"
+                ])
+                AS_IF([test x"$OPUS_ARM_INLINE_MEDIA" = x"1"],[
+                    AC_DEFINE([OPUS_ARM_INLINE_MEDIA], [1],
+                        [Use ARMv6 inline asm optimizations])
+                    inline_optimization="$inline_optimization (Media)"
+                ])
+                AS_IF([test x"$OPUS_ARM_INLINE_NEON" = x"1"],[
+                    AC_DEFINE([OPUS_ARM_INLINE_NEON], 1,
+                        [Use ARM NEON inline asm optimizations])
+                    inline_optimization="$inline_optimization (NEON)"
+                ])
+            ])
+            dnl We need Perl to translate RVCT-syntax asm to gas syntax.
+            AC_CHECK_PROG([HAVE_PERL], perl, yes, no)
+            AS_IF([test x"$HAVE_PERL" = x"yes"],[
+                AM_CONDITIONAL([OPUS_ARM_EXTERNAL_ASM],[true])
+                asm_optimization="ARM"
+                AS_IF([test x"$OPUS_ARM_INLINE_EDSP" = x"1"], [
+                    OPUS_ARM_PRESUME_EDSP=1
+                    OPUS_ARM_MAY_HAVE_EDSP=1
+                ],
+                [
+                    OPUS_ARM_PRESUME_EDSP=0
+                    OPUS_ARM_MAY_HAVE_EDSP=0
+                ])
+                AS_IF([test x"$OPUS_ARM_INLINE_MEDIA" = x"1"], [
+                    OPUS_ARM_PRESUME_MEDIA=1
+                    OPUS_ARM_MAY_HAVE_MEDIA=1
+                ],
+                [
+                    OPUS_ARM_PRESUME_MEDIA=0
+                    OPUS_ARM_MAY_HAVE_MEDIA=0
+                ])
+                AS_IF([test x"$OPUS_ARM_INLINE_NEON" = x"1"], [
+                    OPUS_ARM_PRESUME_NEON=1
+                    OPUS_ARM_MAY_HAVE_NEON=1
+                ],
+                [
+                    OPUS_ARM_PRESUME_NEON=0
+                    OPUS_ARM_MAY_HAVE_NEON=0
+                ])
+                AS_IF([test x"$enable_rtcd" = x"yes"],[
+                    AS_IF([test x"$OPUS_ARM_MAY_HAVE_EDSP" != x"1"],[
+                        AC_MSG_NOTICE(
+                          [Trying to force-enable armv5e EDSP instructions...])
+                        AS_ASM_ARM_EDSP_FORCE([OPUS_ARM_MAY_HAVE_EDSP=1])
+                    ])
+                    AS_IF([test x"$OPUS_ARM_MAY_HAVE_MEDIA" != x"1"],[
+                        AC_MSG_NOTICE(
+                          [Trying to force-enable ARMv6 media instructions...])
+                        AS_ASM_ARM_MEDIA_FORCE([OPUS_ARM_MAY_HAVE_MEDIA=1])
+                    ])
+                    AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON" != x"1"],[
+                        AC_MSG_NOTICE(
+                          [Trying to force-enable NEON instructions...])
+                        AS_ASM_ARM_NEON_FORCE([OPUS_ARM_MAY_HAVE_NEON=1])
+                    ])
+                ])
+                rtcd_support=
+                AS_IF([test x"$OPUS_ARM_MAY_HAVE_EDSP" = x"1"],[
+                    AC_DEFINE(OPUS_ARM_MAY_HAVE_EDSP, 1,
+                        [Define if assembler supports EDSP instructions])
+                    AS_IF([test x"$OPUS_ARM_PRESUME_EDSP" = x"1"],[
+                        AC_DEFINE(OPUS_ARM_PRESUME_EDSP, 1,
+                          [Define if binary requires EDSP instruction support])
+                        asm_optimization="$asm_optimization (EDSP)"
+                    ],
+                        [rtcd_support="$rtcd_support (EDSP)"]
+                    )
+                ])
+                AC_SUBST(OPUS_ARM_MAY_HAVE_EDSP)
+                AS_IF([test x"$OPUS_ARM_MAY_HAVE_MEDIA" = x"1"],[
+                    AC_DEFINE(OPUS_ARM_MAY_HAVE_MEDIA, 1,
+                      [Define if assembler supports ARMv6 media instructions])
+                    AS_IF([test x"$OPUS_ARM_PRESUME_MEDIA" = x"1"],[
+                        AC_DEFINE(OPUS_ARM_PRESUME_MEDIA, 1,
+                          [Define if binary requires ARMv6 media instruction support])
+                        asm_optimization="$asm_optimization (Media)"
+                    ],
+                        [rtcd_support="$rtcd_support (Media)"]
+                    )
+                ])
+                AC_SUBST(OPUS_ARM_MAY_HAVE_MEDIA)
+                AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON" = x"1"],[
+                    AC_DEFINE(OPUS_ARM_MAY_HAVE_NEON, 1,
+                      [Define if compiler supports NEON instructions])
+                    AS_IF([test x"$OPUS_ARM_PRESUME_NEON" = x"1"], [
+                        AC_DEFINE(OPUS_ARM_PRESUME_NEON, 1,
+                          [Define if binary requires NEON instruction support])
+                        asm_optimization="$asm_optimization (NEON)"
+                    ],
+                        [rtcd_support="$rtcd_support (NEON)"]
+                    )
+                ])
+                AC_SUBST(OPUS_ARM_MAY_HAVE_NEON)
+                dnl Make sure turning on RTCD gets us at least one
+                dnl instruction set.
+                AS_IF([test x"$rtcd_support" != x""],
+                    [rtcd_support=ARM"$rtcd_support"],
+                    [rtcd_support="no"]
+                )
+                AC_MSG_CHECKING([for apple style tools])
+                AC_PREPROC_IFELSE([AC_LANG_PROGRAM([
+#ifndef __APPLE__
+#error 1
+#endif],[])],
+                    [AC_MSG_RESULT([yes]); ARM2GNU_PARAMS="--apple"],
+                    [AC_MSG_RESULT([no]); ARM2GNU_PARAMS=""])
+                AC_SUBST(ARM2GNU_PARAMS)
+            ],
+            [
+                AC_MSG_WARN(
+                  [*** ARM assembly requires perl -- disabling optimizations])
+                asm_optimization="(missing perl dependency for ARM)"
+            ])
+        ])
+        ;;
+    esac
+],[
+   inline_optimization="disabled"
+   asm_optimization="disabled"
+])
+
+AM_CONDITIONAL([OPUS_ARM_INLINE_ASM],
+    [test x"${inline_optimization%% *}" = x"ARM"])
+AM_CONDITIONAL([OPUS_ARM_EXTERNAL_ASM],
+    [test x"${asm_optimization%% *}" = x"ARM"])
+
+AM_CONDITIONAL([HAVE_SSE], [false])
+AM_CONDITIONAL([HAVE_SSE2], [false])
+AM_CONDITIONAL([HAVE_SSE4_1], [false])
+AM_CONDITIONAL([HAVE_AVX], [false])
+
+m4_define([DEFAULT_X86_SSE_CFLAGS], [-msse])
+m4_define([DEFAULT_X86_SSE2_CFLAGS], [-msse2])
+m4_define([DEFAULT_X86_SSE4_1_CFLAGS], [-msse4.1])
+m4_define([DEFAULT_X86_AVX_CFLAGS], [-mavx])
+m4_define([DEFAULT_ARM_NEON_INTR_CFLAGS], [-mfpu=neon])
+# With GCC on ARM32 softfp architectures (e.g. Android, or older Ubuntu) you need to specify
+# -mfloat-abi=softfp for -mfpu=neon to work.  However, on ARM32 hardfp architectures (e.g. newer Ubuntu),
+# this option will break things.
+
+# As a heuristic, if host matches arm*eabi* but not arm*hf*, it's probably soft-float.
+m4_define([DEFAULT_ARM_NEON_SOFTFP_INTR_CFLAGS], [-mfpu=neon -mfloat-abi=softfp])
+
+AS_CASE([$host],
+	[arm*hf*], [AS_VAR_SET([RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS], "DEFAULT_ARM_NEON_INTR_CFLAGS")],
+	[arm*eabi*], [AS_VAR_SET([RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS], "DEFAULT_ARM_NEON_SOFTFP_INTR_CFLAGS")],
+	[AS_VAR_SET([RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS], "DEFAULT_ARM_NEON_INTR_CFLAGS")])
+
+AC_ARG_VAR([X86_SSE_CFLAGS], [C compiler flags to compile SSE intrinsics @<:@default=]DEFAULT_X86_SSE_CFLAGS[@:>@])
+AC_ARG_VAR([X86_SSE2_CFLAGS], [C compiler flags to compile SSE2 intrinsics @<:@default=]DEFAULT_X86_SSE2_CFLAGS[@:>@])
+AC_ARG_VAR([X86_SSE4_1_CFLAGS], [C compiler flags to compile SSE4.1 intrinsics @<:@default=]DEFAULT_X86_SSE4_1_CFLAGS[@:>@])
+AC_ARG_VAR([X86_AVX_CFLAGS], [C compiler flags to compile AVX intrinsics @<:@default=]DEFAULT_X86_AVX_CFLAGS[@:>@])
+AC_ARG_VAR([ARM_NEON_INTR_CFLAGS], [C compiler flags to compile ARM NEON intrinsics @<:@default=]DEFAULT_ARM_NEON_INTR_CFLAGS / DEFAULT_ARM_NEON_SOFTFP_INTR_CFLAGS[@:>@])
+
+AS_VAR_SET_IF([X86_SSE_CFLAGS], [], [AS_VAR_SET([X86_SSE_CFLAGS], "DEFAULT_X86_SSE_CFLAGS")])
+AS_VAR_SET_IF([X86_SSE2_CFLAGS], [], [AS_VAR_SET([X86_SSE2_CFLAGS], "DEFAULT_X86_SSE2_CFLAGS")])
+AS_VAR_SET_IF([X86_SSE4_1_CFLAGS], [], [AS_VAR_SET([X86_SSE4_1_CFLAGS], "DEFAULT_X86_SSE4_1_CFLAGS")])
+AS_VAR_SET_IF([X86_AVX_CFLAGS], [], [AS_VAR_SET([X86_AVX_CFLAGS], "DEFAULT_X86_AVX_CFLAGS")])
+AS_VAR_SET_IF([ARM_NEON_INTR_CFLAGS], [], [AS_VAR_SET([ARM_NEON_INTR_CFLAGS], ["$RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS"])])
+
+AC_DEFUN([OPUS_PATH_NE10],
+   [
+      AC_ARG_WITH(NE10,
+                  AC_HELP_STRING([--with-NE10=PFX],[Prefix where libNE10 is installed (optional)]),
+                  NE10_prefix="$withval", NE10_prefix="")
+      AC_ARG_WITH(NE10-libraries,
+                  AC_HELP_STRING([--with-NE10-libraries=DIR],
+                        [Directory where libNE10 library is installed (optional)]),
+                  NE10_libraries="$withval", NE10_libraries="")
+      AC_ARG_WITH(NE10-includes,
+                  AC_HELP_STRING([--with-NE10-includes=DIR],
+                                 [Directory where libNE10 header files are installed (optional)]),
+                  NE10_includes="$withval", NE10_includes="")
+
+      if test "x$NE10_libraries" != "x" ; then
+         NE10_LIBS="-L$NE10_libraries"
+      elif test "x$NE10_prefix" = "xno" || test "x$NE10_prefix" = "xyes" ; then
+         NE10_LIBS=""
+      elif test "x$NE10_prefix" != "x" ; then
+         NE10_LIBS="-L$NE10_prefix/lib"
+      elif test "x$prefix" != "xNONE" ; then
+         NE10_LIBS="-L$prefix/lib"
+      fi
+
+      if test "x$NE10_prefix" != "xno" ; then
+         NE10_LIBS="$NE10_LIBS -lNE10"
+      fi
+
+      if test "x$NE10_includes" != "x" ; then
+         NE10_CFLAGS="-I$NE10_includes"
+      elif test "x$NE10_prefix" = "xno" || test "x$NE10_prefix" = "xyes" ; then
+         NE10_CFLAGS=""
+      elif test "x$ogg_prefix" != "x" ; then
+         NE10_CFLAGS="-I$NE10_prefix/include"
+      elif test "x$prefix" != "xNONE"; then
+         NE10_CFLAGS="-I$prefix/include"
+      fi
+
+      AC_MSG_CHECKING(for NE10)
+      save_CFLAGS="$CFLAGS"; CFLAGS="$NE10_CFLAGS"
+      save_LIBS="$LIBS"; LIBS="$NE10_LIBS $LIBM"
+      AC_LINK_IFELSE(
+         [
+            AC_LANG_PROGRAM(
+               [[#include <NE10_init.h>
+               ]],
+               [[
+                  ne10_fft_cfg_float32_t cfg;
+                  cfg = ne10_fft_alloc_c2c_float32_neon(480);
+               ]]
+            )
+         ],[
+            HAVE_ARM_NE10=1
+            AC_MSG_RESULT([yes])
+         ],[
+            HAVE_ARM_NE10=0
+            AC_MSG_RESULT([no])
+            NE10_CFLAGS=""
+            NE10_LIBS=""
+         ]
+      )
+      CFLAGS="$save_CFLAGS"; LIBS="$save_LIBS"
+      #Now we know if libNE10 is installed or not
+      AS_IF([test x"$HAVE_ARM_NE10" = x"1"],
+         [
+            AC_DEFINE([HAVE_ARM_NE10], 1, [NE10 library is installed on host. Make sure it is on target!])
+            AC_SUBST(HAVE_ARM_NE10)
+            AC_SUBST(NE10_CFLAGS)
+            AC_SUBST(NE10_LIBS)
+         ]
+      )
+   ]
+)
+
+AS_IF([test x"$enable_intrinsics" = x"yes"],[
+   intrinsics_support=""
+   AS_CASE([$host_cpu],
+   [arm*],
+   [
+      cpu_arm=yes
+      OPUS_CHECK_INTRINSICS(
+         [ARM Neon],
+         [$ARM_NEON_INTR_CFLAGS],
+         [OPUS_ARM_MAY_HAVE_NEON_INTR],
+         [OPUS_ARM_PRESUME_NEON_INTR],
+         [[#include <arm_neon.h>
+         ]],
+         [[
+            static float32x4_t A0, A1, SUMM;
+            SUMM = vmlaq_f32(SUMM, A0, A1);
+         ]]
+      )
+      AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON_INTR" = x"1" && test x"$OPUS_ARM_PRESUME_NEON_INTR" != x"1"],
+          [
+             OPUS_ARM_NEON_INTR_CFLAGS="$ARM_NEON_INTR_CFLAGS"
+             AC_SUBST([OPUS_ARM_NEON_INTR_CFLAGS])
+          ]
+      )
+
+      AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON_INTR" = x"1"],
+      [
+         AC_DEFINE([OPUS_ARM_MAY_HAVE_NEON_INTR], 1, [Compiler supports ARMv7 Neon Intrinsics])
+         intrinsics_support="$intrinsics_support (Neon_Intrinsics)"
+
+         AS_IF([test x"enable_rtcd" != x"" && test x"$OPUS_ARM_PRESUME_NEON_INTR" != x"1"],
+            [rtcd_support="$rtcd_support (ARMv7_Neon_Intrinsics)"])
+
+         AS_IF([test x"$OPUS_ARM_PRESUME_NEON_INTR" = x"1"],
+            [AC_DEFINE([OPUS_ARM_PRESUME_NEON_INTR], 1, [Define if binary requires NEON intrinsics support])])
+
+         OPUS_PATH_NE10()
+         AS_IF([test x"$NE10_LIBS" != x""],
+         [
+              intrinsics_support="$intrinsics_support (NE10)"
+              AS_IF([test x"enable_rtcd" != x"" \
+               && test x"$OPUS_ARM_PRESUME_NEON_INTR" != x"1"],
+                 [rtcd_support="$rtcd_support (NE10)"])
+         ])
+
+         AS_IF([test x"$rtcd_support" = x""],
+            [rtcd_support=no])
+
+         AS_IF([test x"$intrinsics_support" = x""],
+            [intrinsics_support=no],
+            [intrinsics_support="arm$intrinsics_support"])
+      ],
+      [
+         AC_MSG_WARN([Compiler does not support ARM intrinsics])
+         intrinsics_support=no
+      ])
+   ],
+   [i?86|x86_64],
+   [
+      OPUS_CHECK_INTRINSICS(
+         [SSE],
+         [$X86_SSE_CFLAGS],
+         [OPUS_X86_MAY_HAVE_SSE],
+         [OPUS_X86_PRESUME_SSE],
+         [[#include <xmmintrin.h>
+         ]],
+         [[
+             static __m128 mtest;
+             mtest = _mm_setzero_ps();
+         ]]
+      )
+      AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE" = x"1" && test x"$OPUS_X86_PRESUME_SSE" != x"1"],
+          [
+             OPUS_X86_SSE_CFLAGS="$X86_SSE_CFLAGS"
+             AC_SUBST([OPUS_X86_SSE_CFLAGS])
+          ]
+      )
+      OPUS_CHECK_INTRINSICS(
+         [SSE2],
+         [$X86_SSE2_CFLAGS],
+         [OPUS_X86_MAY_HAVE_SSE2],
+         [OPUS_X86_PRESUME_SSE2],
+         [[#include <emmintrin.h>
+         ]],
+         [[
+             static __m128i mtest;
+             mtest = _mm_setzero_si128();
+         ]]
+      )
+      AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE2" = x"1" && test x"$OPUS_X86_PRESUME_SSE2" != x"1"],
+          [
+             OPUS_X86_SSE2_CFLAGS="$X86_SSE2_CFLAGS"
+             AC_SUBST([OPUS_X86_SSE2_CFLAGS])
+          ]
+      )
+      OPUS_CHECK_INTRINSICS(
+         [SSE4.1],
+         [$X86_SSE4_1_CFLAGS],
+         [OPUS_X86_MAY_HAVE_SSE4_1],
+         [OPUS_X86_PRESUME_SSE4_1],
+         [[#include <smmintrin.h>
+         ]],
+         [[
+            static __m128i mtest;
+            mtest = _mm_setzero_si128();
+            mtest = _mm_cmpeq_epi64(mtest, mtest);
+         ]]
+      )
+      AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE4_1" = x"1" && test x"$OPUS_X86_PRESUME_SSE4_1" != x"1"],
+          [
+             OPUS_X86_SSE4_1_CFLAGS="$X86_SSE4_1_CFLAGS"
+             AC_SUBST([OPUS_X86_SSE4_1_CFLAGS])
+          ]
+      )
+      OPUS_CHECK_INTRINSICS(
+         [AVX],
+         [$X86_AVX_CFLAGS],
+         [OPUS_X86_MAY_HAVE_AVX],
+         [OPUS_X86_PRESUME_AVX],
+         [[#include <immintrin.h>
+         ]],
+         [[
+            static __m256 mtest;
+            mtest = _mm256_setzero_ps();
+         ]]
+      )
+      AS_IF([test x"$OPUS_X86_MAY_HAVE_AVX" = x"1" && test x"$OPUS_X86_PRESUME_AVX" != x"1"],
+          [
+             OPUS_X86_AVX_CFLAGS="$X86_AVX_CFLAGS"
+             AC_SUBST([OPUS_X86_AVX_CFLAGS])
+          ]
+      )
+         AS_IF([test x"$rtcd_support" = x"no"], [rtcd_support=""])
+         AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE" = x"1"],
+         [
+            AC_DEFINE([OPUS_X86_MAY_HAVE_SSE], 1, [Compiler supports X86 SSE Intrinsics])
+            intrinsics_support="$intrinsics_support SSE"
+
+            AS_IF([test x"$OPUS_X86_PRESUME_SSE" = x"1"],
+               [AC_DEFINE([OPUS_X86_PRESUME_SSE], 1, [Define if binary requires SSE intrinsics support])],
+               [rtcd_support="$rtcd_support SSE"])
+         ],
+         [
+            AC_MSG_WARN([Compiler does not support SSE intrinsics])
+         ])
+
+         AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE2" = x"1"],
+         [
+            AC_DEFINE([OPUS_X86_MAY_HAVE_SSE2], 1, [Compiler supports X86 SSE2 Intrinsics])
+            intrinsics_support="$intrinsics_support SSE2"
+
+            AS_IF([test x"$OPUS_X86_PRESUME_SSE2" = x"1"],
+               [AC_DEFINE([OPUS_X86_PRESUME_SSE2], 1, [Define if binary requires SSE2 intrinsics support])],
+               [rtcd_support="$rtcd_support SSE2"])
+         ],
+         [
+            AC_MSG_WARN([Compiler does not support SSE2 intrinsics])
+         ])
+
+         AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE4_1" = x"1"],
+         [
+            AC_DEFINE([OPUS_X86_MAY_HAVE_SSE4_1], 1, [Compiler supports X86 SSE4.1 Intrinsics])
+            intrinsics_support="$intrinsics_support SSE4.1"
+
+            AS_IF([test x"$OPUS_X86_PRESUME_SSE4_1" = x"1"],
+               [AC_DEFINE([OPUS_X86_PRESUME_SSE4_1], 1, [Define if binary requires SSE4.1 intrinsics support])],
+               [rtcd_support="$rtcd_support SSE4.1"])
+         ],
+         [
+            AC_MSG_WARN([Compiler does not support SSE4.1 intrinsics])
+         ])
+         AS_IF([test x"$OPUS_X86_MAY_HAVE_AVX" = x"1"],
+         [
+            AC_DEFINE([OPUS_X86_MAY_HAVE_AVX], 1, [Compiler supports X86 AVX Intrinsics])
+            intrinsics_support="$intrinsics_support AVX"
+
+            AS_IF([test x"$OPUS_X86_PRESUME_AVX" = x"1"],
+               [AC_DEFINE([OPUS_X86_PRESUME_AVX], 1, [Define if binary requires AVX intrinsics support])],
+               [rtcd_support="$rtcd_support AVX"])
+         ],
+         [
+            AC_MSG_WARN([Compiler does not support AVX intrinsics])
+         ])
+
+         AS_IF([test x"$intrinsics_support" = x""],
+            [intrinsics_support=no],
+            [intrinsics_support="x86$intrinsics_support"]
+         )
+         AS_IF([test x"$rtcd_support" = x""],
+            [rtcd_support=no],
+            [rtcd_support="x86$rtcd_support"],
+        )
+
+    AS_IF([test x"$enable_rtcd" = x"yes" && test x"$rtcd_support" != x""],[
+            get_cpuid_by_asm="no"
+            AC_MSG_CHECKING([How to get X86 CPU Info])
+            AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                 #include <stdio.h>
+            ]],[[
+                 unsigned int CPUInfo0;
+                 unsigned int CPUInfo1;
+                 unsigned int CPUInfo2;
+                 unsigned int CPUInfo3;
+                 unsigned int InfoType;
+                 __asm__ __volatile__ (
+                 "cpuid":
+                 "=a" (CPUInfo0),
+                 "=b" (CPUInfo1),
+                 "=c" (CPUInfo2),
+                 "=d" (CPUInfo3) :
+                 "a" (InfoType), "c" (0)
+                );
+            ]])],
+            [get_cpuid_by_asm="yes"
+             AC_MSG_RESULT([Inline Assembly])
+			 AC_DEFINE([CPU_INFO_BY_ASM], [1], [Get CPU Info by asm method])],
+             [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+                 #include <cpuid.h>
+            ]],[[
+                 unsigned int CPUInfo0;
+                 unsigned int CPUInfo1;
+                 unsigned int CPUInfo2;
+                 unsigned int CPUInfo3;
+                 unsigned int InfoType;
+                 __get_cpuid(InfoType, &CPUInfo0, &CPUInfo1, &CPUInfo2, &CPUInfo3);
+            ]])],
+            [AC_MSG_RESULT([C method])
+			 AC_DEFINE([CPU_INFO_BY_C], [1], [Get CPU Info by c method])],
+            [AC_MSG_ERROR([no supported Get CPU Info method, please disable intrinsics])])])])
+   ],
+   [
+      AC_MSG_WARN([No intrinsics support for your architecture])
+      intrinsics_support="no"
+   ])
+],
+[
+   intrinsics_support="no"
+])
+
+AM_CONDITIONAL([CPU_ARM], [test "$cpu_arm" = "yes"])
+AM_CONDITIONAL([OPUS_ARM_NEON_INTR],
+    [test x"$OPUS_ARM_MAY_HAVE_NEON_INTR" = x"1"])
+AM_CONDITIONAL([HAVE_ARM_NE10],
+    [test x"$HAVE_ARM_NE10" = x"1"])
+AM_CONDITIONAL([HAVE_SSE],
+    [test x"$OPUS_X86_MAY_HAVE_SSE" = x"1"])
+AM_CONDITIONAL([HAVE_SSE2],
+    [test x"$OPUS_X86_MAY_HAVE_SSE2" = x"1"])
+AM_CONDITIONAL([HAVE_SSE4_1],
+    [test x"$OPUS_X86_MAY_HAVE_SSE4_1" = x"1"])
+AM_CONDITIONAL([HAVE_AVX],
+    [test x"$OPUS_X86_MAY_HAVE_AVX" = x"1"])
+
+AS_IF([test x"$enable_rtcd" = x"yes"],[
+    AS_IF([test x"$rtcd_support" != x"no"],[
+        AC_DEFINE([OPUS_HAVE_RTCD], [1],
+            [Use run-time CPU capabilities detection])
+        OPUS_HAVE_RTCD=1
+        AC_SUBST(OPUS_HAVE_RTCD)
+    ])
+],[
+    rtcd_support="disabled"
+])
+
+AC_ARG_ENABLE([assertions],
+    [AS_HELP_STRING([--enable-assertions],[enable additional software error checking])],,
+    [enable_assertions=no])
+
+AS_IF([test "$enable_assertions" = "yes"], [
+  AC_DEFINE([ENABLE_ASSERTIONS], [1], [Assertions])
+])
+
+AC_ARG_ENABLE([fuzzing],
+    [AS_HELP_STRING([--enable-fuzzing],[causes the encoder to make random decisions])],,
+    [enable_fuzzing=no])
+
+AS_IF([test "$enable_fuzzing" = "yes"], [
+  AC_DEFINE([FUZZING], [1], [Fuzzing])
+])
+
+AC_ARG_ENABLE([doc],
+    [AS_HELP_STRING([--disable-doc], [Do not build API documentation])],,
+    [enable_doc=yes])
+
+AS_IF([test "$enable_doc" = "yes"], [
+  AC_CHECK_PROG(HAVE_DOXYGEN, [doxygen], [yes], [no])
+],[
+  HAVE_DOXYGEN=no
+])
+
+AM_CONDITIONAL([HAVE_DOXYGEN], [test "$HAVE_DOXYGEN" = "yes"])
+
+AC_ARG_ENABLE([extra-programs],
+    [AS_HELP_STRING([--disable-extra-programs], [Do not build extra programs (demo and tests)])],,
+    [enable_extra_programs=yes])
+
+AM_CONDITIONAL([EXTRA_PROGRAMS], [test "$enable_extra_programs" = "yes"])
+
+
+saved_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fvisibility=hidden"
+AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])],
+    [ AC_MSG_RESULT([yes]) ],
+    [ AC_MSG_RESULT([no])
+      CFLAGS="$saved_CFLAGS"
+    ])
+
+CFLAGS="$CFLAGS -W"
+
+warn_CFLAGS="-Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes"
+saved_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS $warn_CFLAGS"
+AC_MSG_CHECKING([if ${CC} supports ${warn_CFLAGS}])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])],
+    [ AC_MSG_RESULT([yes]) ],
+    [ AC_MSG_RESULT([no])
+      CFLAGS="$saved_CFLAGS"
+    ])
+
+saved_LIBS="$LIBS"
+LIBS="$LIBS $LIBM"
+AC_CHECK_FUNCS([lrintf])
+AC_CHECK_FUNCS([lrint])
+LIBS="$saved_LIBS"
+
+AC_CHECK_FUNCS([__malloc_hook])
+
+AC_SUBST([PC_BUILD])
+
+AC_CONFIG_FILES([
+    Makefile
+    opus.pc
+    opus-uninstalled.pc
+    celt/arm/armopts.s
+    doc/Makefile
+    doc/Doxyfile
+])
+AC_CONFIG_HEADERS([config.h])
+
+AC_OUTPUT
+
+AC_MSG_NOTICE([
+------------------------------------------------------------------------
+  $PACKAGE_NAME $PACKAGE_VERSION:  Automatic configuration OK.
+
+    Compiler support:
+
+      C99 var arrays: ................ ${has_var_arrays}
+      C99 lrintf: .................... ${ac_cv_func_lrintf}
+      Use alloca: .................... ${use_alloca}
+
+    General configuration:
+
+      Floating point support: ........ ${enable_float}
+      Fast float approximations: ..... ${enable_float_approx}
+      Fixed point debugging: ......... ${enable_fixed_point_debug}
+      Inline Assembly Optimizations: . ${inline_optimization}
+      External Assembly Optimizations: ${asm_optimization}
+      Intrinsics Optimizations.......: ${intrinsics_support}
+      Run-time CPU detection: ........ ${rtcd_support}
+      Custom modes: .................. ${enable_custom_modes}
+      Assertion checking: ............ ${enable_assertions}
+      Fuzzing: ....................... ${enable_fuzzing}
+
+      API documentation: ............. ${enable_doc}
+      Extra programs: ................ ${enable_extra_programs}
+------------------------------------------------------------------------
+
+ Type "make; make install" to compile and install
+ Type "make check" to run the test suite
+])
+