Chris@69: dnl Process this file with autoconf to produce a configure script. -*-m4-*-
Chris@69: 
Chris@69: dnl The package_version file will be automatically synced to the git revision
Chris@69: dnl by the update_version script when configured in the repository, but will
Chris@69: dnl remain constant in tarball releases unless it is manually edited.
Chris@69: m4_define([CURRENT_VERSION],
Chris@69:           m4_esyscmd([ ./update_version 2>/dev/null || true
Chris@69:                        if test -e package_version; then
Chris@69:                            . ./package_version
Chris@69:                            printf "$PACKAGE_VERSION"
Chris@69:                        else
Chris@69:                            printf "unknown"
Chris@69:                        fi ]))
Chris@69: 
Chris@69: AC_INIT([opus],[CURRENT_VERSION],[opus@xiph.org])
Chris@69: 
Chris@69: AC_CONFIG_SRCDIR(src/opus_encoder.c)
Chris@69: AC_CONFIG_MACRO_DIR([m4])
Chris@69: 
Chris@69: dnl enable silent rules on automake 1.11 and later
Chris@69: m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
Chris@69: 
Chris@69: # For libtool.
Chris@69: dnl Please update these for releases.
Chris@69: OPUS_LT_CURRENT=7
Chris@69: OPUS_LT_REVISION=0
Chris@69: OPUS_LT_AGE=7
Chris@69: 
Chris@69: AC_SUBST(OPUS_LT_CURRENT)
Chris@69: AC_SUBST(OPUS_LT_REVISION)
Chris@69: AC_SUBST(OPUS_LT_AGE)
Chris@69: 
Chris@69: AM_INIT_AUTOMAKE([no-define])
Chris@69: AM_MAINTAINER_MODE([enable])
Chris@69: 
Chris@69: AC_CANONICAL_HOST
Chris@69: AC_MINGW32
Chris@69: AM_PROG_LIBTOOL
Chris@69: AM_PROG_CC_C_O
Chris@69: 
Chris@69: AC_PROG_CC_C99
Chris@69: AC_C_CONST
Chris@69: AC_C_INLINE
Chris@69: 
Chris@69: AM_PROG_AS
Chris@69: 
Chris@69: AC_DEFINE([OPUS_BUILD], [], [This is a build of OPUS])
Chris@69: 
Chris@69: #Use a hacked up version of autoconf's AC_C_RESTRICT because it's not
Chris@69: #strong enough a test to detect old buggy versions of GCC (e.g. 2.95.3)
Chris@69: #Note: Both this and the test for variable-size arrays below are also
Chris@69: #      done by AC_PROG_CC_C99, but not thoroughly enough apparently.
Chris@69: AC_CACHE_CHECK([for C/C++ restrict keyword], ac_cv_c_restrict,
Chris@69:   [ac_cv_c_restrict=no
Chris@69:    # The order here caters to the fact that C++ does not require restrict.
Chris@69:    for ac_kw in __restrict __restrict__ _Restrict restrict; do
Chris@69:      AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
Chris@69:       [[typedef int * int_ptr;
Chris@69:         int foo (int_ptr $ac_kw ip, int * $ac_kw baz[]) {
Chris@69:         return ip[0];
Chris@69:        }]],
Chris@69:       [[int s[1];
Chris@69:         int * $ac_kw t = s;
Chris@69:         t[0] = 0;
Chris@69:         return foo(t, (void *)0)]])],
Chris@69:       [ac_cv_c_restrict=$ac_kw])
Chris@69:      test "$ac_cv_c_restrict" != no && break
Chris@69:    done
Chris@69:   ])
Chris@69: 
Chris@69: AH_VERBATIM([restrict],
Chris@69: [/* Define to the equivalent of the C99 'restrict' keyword, or to
Chris@69:    nothing if this is not supported.  Do not define if restrict is
Chris@69:    supported directly.  */
Chris@69: #undef restrict
Chris@69: /* Work around a bug in Sun C++: it does not support _Restrict or
Chris@69:    __restrict__, even though the corresponding Sun C compiler ends up with
Chris@69:    "#define restrict _Restrict" or "#define restrict __restrict__" in the
Chris@69:    previous line.  Perhaps some future version of Sun C++ will work with
Chris@69:    restrict; if so, hopefully it defines __RESTRICT like Sun C does.  */
Chris@69: #if defined __SUNPRO_CC && !defined __RESTRICT
Chris@69: # define _Restrict
Chris@69: # define __restrict__
Chris@69: #endif])
Chris@69: 
Chris@69: case $ac_cv_c_restrict in
Chris@69:    restrict) ;;
Chris@69:    no) AC_DEFINE([restrict], []) ;;
Chris@69:    *)  AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
Chris@69: esac
Chris@69: 
Chris@69: AC_MSG_CHECKING(for C99 variable-size arrays)
Chris@69: AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
Chris@69:                    [[static int x; char a[++x]; a[sizeof a - 1] = 0; int N; return a[0];]])],
Chris@69:     [ has_var_arrays=yes
Chris@69:       use_alloca="no (using var arrays)"
Chris@69:       AC_DEFINE([VAR_ARRAYS], [1], [Use C99 variable-size arrays])
Chris@69:     ],[
Chris@69:       has_var_arrays=no
Chris@69:     ])
Chris@69: AC_MSG_RESULT([$has_var_arrays])
Chris@69: 
Chris@69: AS_IF([test "$has_var_arrays" = "no"],
Chris@69:   [
Chris@69:    AC_CHECK_HEADERS([alloca.h])
Chris@69:    AC_MSG_CHECKING(for alloca)
Chris@69:    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alloca.h>]],
Chris@69:                                       [[int foo=10; int *array = alloca(foo);]])],
Chris@69:      [ use_alloca=yes;
Chris@69:        AC_DEFINE([USE_ALLOCA], [], [Make use of alloca])
Chris@69:      ],[
Chris@69:        use_alloca=no
Chris@69:      ])
Chris@69:    AC_MSG_RESULT([$use_alloca])
Chris@69:   ])
Chris@69: 
Chris@69: LT_LIB_M
Chris@69: 
Chris@69: AC_ARG_ENABLE([fixed-point],
Chris@69:     [AS_HELP_STRING([--enable-fixed-point],
Chris@69:                     [compile without floating point (for machines without a fast enough FPU)])],,
Chris@69:     [enable_fixed_point=no])
Chris@69: 
Chris@69: AS_IF([test "$enable_fixed_point" = "yes"],[
Chris@69:   enable_float="no"
Chris@69:   AC_DEFINE([FIXED_POINT], [1], [Compile as fixed-point (for machines without a fast enough FPU)])
Chris@69:   PC_BUILD="fixed-point"
Chris@69: ],[
Chris@69:   enable_float="yes";
Chris@69:   PC_BUILD="floating-point"
Chris@69: ])
Chris@69: 
Chris@69: AM_CONDITIONAL([FIXED_POINT], [test "$enable_fixed_point" = "yes"])
Chris@69: 
Chris@69: AC_ARG_ENABLE([fixed-point-debug],
Chris@69:     [AS_HELP_STRING([--enable-fixed-point-debug], [debug fixed-point implementation])],,
Chris@69:     [enable_fixed_point_debug=no])
Chris@69: 
Chris@69: AS_IF([test "$enable_fixed_point_debug" = "yes"],[
Chris@69:   AC_DEFINE([FIXED_DEBUG], [1], [Debug fixed-point implementation])
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([float_api],
Chris@69:     [AS_HELP_STRING([--disable-float-api],
Chris@69:                     [compile without the floating point API (for machines with no float library)])],,
Chris@69:     [enable_float_api=yes])
Chris@69: 
Chris@69: AM_CONDITIONAL([DISABLE_FLOAT_API], [test "$enable_float_api" = "no"])
Chris@69: 
Chris@69: AS_IF([test "$enable_float_api" = "no"],[
Chris@69:   AC_DEFINE([DISABLE_FLOAT_API], [1], [Do not build the float API])
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([custom-modes],
Chris@69:     [AS_HELP_STRING([--enable-custom-modes], [enable non-Opus modes, e.g. 44.1 kHz & 2^n frames])],,
Chris@69:     [enable_custom_modes=no])
Chris@69: 
Chris@69: AS_IF([test "$enable_custom_modes" = "yes"],[
Chris@69:   AC_DEFINE([CUSTOM_MODES], [1], [Custom modes])
Chris@69:   PC_BUILD="$PC_BUILD, custom modes"
Chris@69: ])
Chris@69: 
Chris@69: AM_CONDITIONAL([CUSTOM_MODES], [test "$enable_custom_modes" = "yes"])
Chris@69: 
Chris@69: has_float_approx=no
Chris@69: #case "$host_cpu" in
Chris@69: #i[[3456]]86 | x86_64 | powerpc64 | powerpc32 | ia64)
Chris@69: #  has_float_approx=yes
Chris@69: #  ;;
Chris@69: #esac
Chris@69: 
Chris@69: AC_ARG_ENABLE([float-approx],
Chris@69:     [AS_HELP_STRING([--enable-float-approx], [enable fast approximations for floating point])],
Chris@69:     [if test "$enable_float_approx" = "yes"; then
Chris@69:        AC_WARN([Floating point approximations are not supported on all platforms.])
Chris@69:      fi
Chris@69:     ],
Chris@69:     [enable_float_approx=$has_float_approx])
Chris@69: 
Chris@69: AS_IF([test "$enable_float_approx" = "yes"],[
Chris@69:   AC_DEFINE([FLOAT_APPROX], [1], [Float approximations])
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([asm],
Chris@69:     [AS_HELP_STRING([--disable-asm], [Disable assembly optimizations])],,
Chris@69:     [enable_asm=yes])
Chris@69: 
Chris@69: AC_ARG_ENABLE([rtcd],
Chris@69:     [AS_HELP_STRING([--disable-rtcd], [Disable run-time CPU capabilities detection])],,
Chris@69:     [enable_rtcd=yes])
Chris@69: 
Chris@69: AC_ARG_ENABLE([intrinsics],
Chris@69:     [AS_HELP_STRING([--disable-intrinsics], [Disable intrinsics optimizations])],,
Chris@69:     [enable_intrinsics=yes])
Chris@69: 
Chris@69: rtcd_support=no
Chris@69: cpu_arm=no
Chris@69: 
Chris@69: AS_IF([test x"${enable_asm}" = x"yes"],[
Chris@69:     inline_optimization="No inline ASM for your platform, please send patches"
Chris@69:     case $host_cpu in
Chris@69:       arm*)
Chris@69:         dnl Currently we only have asm for fixed-point
Chris@69:         AS_IF([test "$enable_float" != "yes"],[
Chris@69:             cpu_arm=yes
Chris@69:             AC_DEFINE([OPUS_ARM_ASM], [],  [Make use of ARM asm optimization])
Chris@69:             AS_GCC_INLINE_ASSEMBLY(
Chris@69:                 [inline_optimization="ARM"],
Chris@69:                 [inline_optimization="disabled"]
Chris@69:             )
Chris@69:             AS_ASM_ARM_EDSP([OPUS_ARM_INLINE_EDSP=1],[OPUS_ARM_INLINE_EDSP=0])
Chris@69:             AS_ASM_ARM_MEDIA([OPUS_ARM_INLINE_MEDIA=1],
Chris@69:                 [OPUS_ARM_INLINE_MEDIA=0])
Chris@69:             AS_ASM_ARM_NEON([OPUS_ARM_INLINE_NEON=1],[OPUS_ARM_INLINE_NEON=0])
Chris@69:             AS_IF([test x"$inline_optimization" = x"ARM"],[
Chris@69:                 AM_CONDITIONAL([OPUS_ARM_INLINE_ASM],[true])
Chris@69:                 AC_DEFINE([OPUS_ARM_INLINE_ASM], 1,
Chris@69:                     [Use generic ARMv4 inline asm optimizations])
Chris@69:                 AS_IF([test x"$OPUS_ARM_INLINE_EDSP" = x"1"],[
Chris@69:                     AC_DEFINE([OPUS_ARM_INLINE_EDSP], [1],
Chris@69:                         [Use ARMv5E inline asm optimizations])
Chris@69:                     inline_optimization="$inline_optimization (EDSP)"
Chris@69:                 ])
Chris@69:                 AS_IF([test x"$OPUS_ARM_INLINE_MEDIA" = x"1"],[
Chris@69:                     AC_DEFINE([OPUS_ARM_INLINE_MEDIA], [1],
Chris@69:                         [Use ARMv6 inline asm optimizations])
Chris@69:                     inline_optimization="$inline_optimization (Media)"
Chris@69:                 ])
Chris@69:                 AS_IF([test x"$OPUS_ARM_INLINE_NEON" = x"1"],[
Chris@69:                     AC_DEFINE([OPUS_ARM_INLINE_NEON], 1,
Chris@69:                         [Use ARM NEON inline asm optimizations])
Chris@69:                     inline_optimization="$inline_optimization (NEON)"
Chris@69:                 ])
Chris@69:             ])
Chris@69:             dnl We need Perl to translate RVCT-syntax asm to gas syntax.
Chris@69:             AC_CHECK_PROG([HAVE_PERL], perl, yes, no)
Chris@69:             AS_IF([test x"$HAVE_PERL" = x"yes"],[
Chris@69:                 AM_CONDITIONAL([OPUS_ARM_EXTERNAL_ASM],[true])
Chris@69:                 asm_optimization="ARM"
Chris@69:                 AS_IF([test x"$OPUS_ARM_INLINE_EDSP" = x"1"], [
Chris@69:                     OPUS_ARM_PRESUME_EDSP=1
Chris@69:                     OPUS_ARM_MAY_HAVE_EDSP=1
Chris@69:                 ],
Chris@69:                 [
Chris@69:                     OPUS_ARM_PRESUME_EDSP=0
Chris@69:                     OPUS_ARM_MAY_HAVE_EDSP=0
Chris@69:                 ])
Chris@69:                 AS_IF([test x"$OPUS_ARM_INLINE_MEDIA" = x"1"], [
Chris@69:                     OPUS_ARM_PRESUME_MEDIA=1
Chris@69:                     OPUS_ARM_MAY_HAVE_MEDIA=1
Chris@69:                 ],
Chris@69:                 [
Chris@69:                     OPUS_ARM_PRESUME_MEDIA=0
Chris@69:                     OPUS_ARM_MAY_HAVE_MEDIA=0
Chris@69:                 ])
Chris@69:                 AS_IF([test x"$OPUS_ARM_INLINE_NEON" = x"1"], [
Chris@69:                     OPUS_ARM_PRESUME_NEON=1
Chris@69:                     OPUS_ARM_MAY_HAVE_NEON=1
Chris@69:                 ],
Chris@69:                 [
Chris@69:                     OPUS_ARM_PRESUME_NEON=0
Chris@69:                     OPUS_ARM_MAY_HAVE_NEON=0
Chris@69:                 ])
Chris@69:                 AS_IF([test x"$enable_rtcd" = x"yes"],[
Chris@69:                     AS_IF([test x"$OPUS_ARM_MAY_HAVE_EDSP" != x"1"],[
Chris@69:                         AC_MSG_NOTICE(
Chris@69:                           [Trying to force-enable armv5e EDSP instructions...])
Chris@69:                         AS_ASM_ARM_EDSP_FORCE([OPUS_ARM_MAY_HAVE_EDSP=1])
Chris@69:                     ])
Chris@69:                     AS_IF([test x"$OPUS_ARM_MAY_HAVE_MEDIA" != x"1"],[
Chris@69:                         AC_MSG_NOTICE(
Chris@69:                           [Trying to force-enable ARMv6 media instructions...])
Chris@69:                         AS_ASM_ARM_MEDIA_FORCE([OPUS_ARM_MAY_HAVE_MEDIA=1])
Chris@69:                     ])
Chris@69:                     AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON" != x"1"],[
Chris@69:                         AC_MSG_NOTICE(
Chris@69:                           [Trying to force-enable NEON instructions...])
Chris@69:                         AS_ASM_ARM_NEON_FORCE([OPUS_ARM_MAY_HAVE_NEON=1])
Chris@69:                     ])
Chris@69:                 ])
Chris@69:                 rtcd_support=
Chris@69:                 AS_IF([test x"$OPUS_ARM_MAY_HAVE_EDSP" = x"1"],[
Chris@69:                     AC_DEFINE(OPUS_ARM_MAY_HAVE_EDSP, 1,
Chris@69:                         [Define if assembler supports EDSP instructions])
Chris@69:                     AS_IF([test x"$OPUS_ARM_PRESUME_EDSP" = x"1"],[
Chris@69:                         AC_DEFINE(OPUS_ARM_PRESUME_EDSP, 1,
Chris@69:                           [Define if binary requires EDSP instruction support])
Chris@69:                         asm_optimization="$asm_optimization (EDSP)"
Chris@69:                     ],
Chris@69:                         [rtcd_support="$rtcd_support (EDSP)"]
Chris@69:                     )
Chris@69:                 ])
Chris@69:                 AC_SUBST(OPUS_ARM_MAY_HAVE_EDSP)
Chris@69:                 AS_IF([test x"$OPUS_ARM_MAY_HAVE_MEDIA" = x"1"],[
Chris@69:                     AC_DEFINE(OPUS_ARM_MAY_HAVE_MEDIA, 1,
Chris@69:                       [Define if assembler supports ARMv6 media instructions])
Chris@69:                     AS_IF([test x"$OPUS_ARM_PRESUME_MEDIA" = x"1"],[
Chris@69:                         AC_DEFINE(OPUS_ARM_PRESUME_MEDIA, 1,
Chris@69:                           [Define if binary requires ARMv6 media instruction support])
Chris@69:                         asm_optimization="$asm_optimization (Media)"
Chris@69:                     ],
Chris@69:                         [rtcd_support="$rtcd_support (Media)"]
Chris@69:                     )
Chris@69:                 ])
Chris@69:                 AC_SUBST(OPUS_ARM_MAY_HAVE_MEDIA)
Chris@69:                 AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON" = x"1"],[
Chris@69:                     AC_DEFINE(OPUS_ARM_MAY_HAVE_NEON, 1,
Chris@69:                       [Define if compiler supports NEON instructions])
Chris@69:                     AS_IF([test x"$OPUS_ARM_PRESUME_NEON" = x"1"], [
Chris@69:                         AC_DEFINE(OPUS_ARM_PRESUME_NEON, 1,
Chris@69:                           [Define if binary requires NEON instruction support])
Chris@69:                         asm_optimization="$asm_optimization (NEON)"
Chris@69:                     ],
Chris@69:                         [rtcd_support="$rtcd_support (NEON)"]
Chris@69:                     )
Chris@69:                 ])
Chris@69:                 AC_SUBST(OPUS_ARM_MAY_HAVE_NEON)
Chris@69:                 dnl Make sure turning on RTCD gets us at least one
Chris@69:                 dnl instruction set.
Chris@69:                 AS_IF([test x"$rtcd_support" != x""],
Chris@69:                     [rtcd_support=ARM"$rtcd_support"],
Chris@69:                     [rtcd_support="no"]
Chris@69:                 )
Chris@69:                 AC_MSG_CHECKING([for apple style tools])
Chris@69:                 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([
Chris@69: #ifndef __APPLE__
Chris@69: #error 1
Chris@69: #endif],[])],
Chris@69:                     [AC_MSG_RESULT([yes]); ARM2GNU_PARAMS="--apple"],
Chris@69:                     [AC_MSG_RESULT([no]); ARM2GNU_PARAMS=""])
Chris@69:                 AC_SUBST(ARM2GNU_PARAMS)
Chris@69:             ],
Chris@69:             [
Chris@69:                 AC_MSG_WARN(
Chris@69:                   [*** ARM assembly requires perl -- disabling optimizations])
Chris@69:                 asm_optimization="(missing perl dependency for ARM)"
Chris@69:             ])
Chris@69:         ])
Chris@69:         ;;
Chris@69:     esac
Chris@69: ],[
Chris@69:    inline_optimization="disabled"
Chris@69:    asm_optimization="disabled"
Chris@69: ])
Chris@69: 
Chris@69: AM_CONDITIONAL([OPUS_ARM_INLINE_ASM],
Chris@69:     [test x"${inline_optimization%% *}" = x"ARM"])
Chris@69: AM_CONDITIONAL([OPUS_ARM_EXTERNAL_ASM],
Chris@69:     [test x"${asm_optimization%% *}" = x"ARM"])
Chris@69: 
Chris@69: AM_CONDITIONAL([HAVE_SSE], [false])
Chris@69: AM_CONDITIONAL([HAVE_SSE2], [false])
Chris@69: AM_CONDITIONAL([HAVE_SSE4_1], [false])
Chris@69: AM_CONDITIONAL([HAVE_AVX], [false])
Chris@69: 
Chris@69: m4_define([DEFAULT_X86_SSE_CFLAGS], [-msse])
Chris@69: m4_define([DEFAULT_X86_SSE2_CFLAGS], [-msse2])
Chris@69: m4_define([DEFAULT_X86_SSE4_1_CFLAGS], [-msse4.1])
Chris@69: m4_define([DEFAULT_X86_AVX_CFLAGS], [-mavx])
Chris@69: m4_define([DEFAULT_ARM_NEON_INTR_CFLAGS], [-mfpu=neon])
Chris@69: # With GCC on ARM32 softfp architectures (e.g. Android, or older Ubuntu) you need to specify
Chris@69: # -mfloat-abi=softfp for -mfpu=neon to work.  However, on ARM32 hardfp architectures (e.g. newer Ubuntu),
Chris@69: # this option will break things.
Chris@69: 
Chris@69: # As a heuristic, if host matches arm*eabi* but not arm*hf*, it's probably soft-float.
Chris@69: m4_define([DEFAULT_ARM_NEON_SOFTFP_INTR_CFLAGS], [-mfpu=neon -mfloat-abi=softfp])
Chris@69: 
Chris@69: AS_CASE([$host],
Chris@69:         [arm*hf*], [AS_VAR_SET([RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS], "DEFAULT_ARM_NEON_INTR_CFLAGS")],
Chris@69:         [arm*eabi*], [AS_VAR_SET([RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS], "DEFAULT_ARM_NEON_SOFTFP_INTR_CFLAGS")],
Chris@69:         [AS_VAR_SET([RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS], "DEFAULT_ARM_NEON_INTR_CFLAGS")])
Chris@69: 
Chris@69: AC_ARG_VAR([X86_SSE_CFLAGS], [C compiler flags to compile SSE intrinsics @<:@default=]DEFAULT_X86_SSE_CFLAGS[@:>@])
Chris@69: AC_ARG_VAR([X86_SSE2_CFLAGS], [C compiler flags to compile SSE2 intrinsics @<:@default=]DEFAULT_X86_SSE2_CFLAGS[@:>@])
Chris@69: AC_ARG_VAR([X86_SSE4_1_CFLAGS], [C compiler flags to compile SSE4.1 intrinsics @<:@default=]DEFAULT_X86_SSE4_1_CFLAGS[@:>@])
Chris@69: AC_ARG_VAR([X86_AVX_CFLAGS], [C compiler flags to compile AVX intrinsics @<:@default=]DEFAULT_X86_AVX_CFLAGS[@:>@])
Chris@69: 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[@:>@])
Chris@69: 
Chris@69: AS_VAR_SET_IF([X86_SSE_CFLAGS], [], [AS_VAR_SET([X86_SSE_CFLAGS], "DEFAULT_X86_SSE_CFLAGS")])
Chris@69: AS_VAR_SET_IF([X86_SSE2_CFLAGS], [], [AS_VAR_SET([X86_SSE2_CFLAGS], "DEFAULT_X86_SSE2_CFLAGS")])
Chris@69: AS_VAR_SET_IF([X86_SSE4_1_CFLAGS], [], [AS_VAR_SET([X86_SSE4_1_CFLAGS], "DEFAULT_X86_SSE4_1_CFLAGS")])
Chris@69: AS_VAR_SET_IF([X86_AVX_CFLAGS], [], [AS_VAR_SET([X86_AVX_CFLAGS], "DEFAULT_X86_AVX_CFLAGS")])
Chris@69: AS_VAR_SET_IF([ARM_NEON_INTR_CFLAGS], [], [AS_VAR_SET([ARM_NEON_INTR_CFLAGS], ["$RESOLVED_DEFAULT_ARM_NEON_INTR_CFLAGS"])])
Chris@69: 
Chris@69: AC_DEFUN([OPUS_PATH_NE10],
Chris@69:    [
Chris@69:       AC_ARG_WITH(NE10,
Chris@69:                   AC_HELP_STRING([--with-NE10=PFX],[Prefix where libNE10 is installed (optional)]),
Chris@69:                   NE10_prefix="$withval", NE10_prefix="")
Chris@69:       AC_ARG_WITH(NE10-libraries,
Chris@69:                   AC_HELP_STRING([--with-NE10-libraries=DIR],
Chris@69:                         [Directory where libNE10 library is installed (optional)]),
Chris@69:                   NE10_libraries="$withval", NE10_libraries="")
Chris@69:       AC_ARG_WITH(NE10-includes,
Chris@69:                   AC_HELP_STRING([--with-NE10-includes=DIR],
Chris@69:                                  [Directory where libNE10 header files are installed (optional)]),
Chris@69:                   NE10_includes="$withval", NE10_includes="")
Chris@69: 
Chris@69:       if test "x$NE10_libraries" != "x" ; then
Chris@69:          NE10_LIBS="-L$NE10_libraries"
Chris@69:       elif test "x$NE10_prefix" = "xno" || test "x$NE10_prefix" = "xyes" ; then
Chris@69:          NE10_LIBS=""
Chris@69:       elif test "x$NE10_prefix" != "x" ; then
Chris@69:          NE10_LIBS="-L$NE10_prefix/lib"
Chris@69:       elif test "x$prefix" != "xNONE" ; then
Chris@69:          NE10_LIBS="-L$prefix/lib"
Chris@69:       fi
Chris@69: 
Chris@69:       if test "x$NE10_prefix" != "xno" ; then
Chris@69:          NE10_LIBS="$NE10_LIBS -lNE10"
Chris@69:       fi
Chris@69: 
Chris@69:       if test "x$NE10_includes" != "x" ; then
Chris@69:          NE10_CFLAGS="-I$NE10_includes"
Chris@69:       elif test "x$NE10_prefix" = "xno" || test "x$NE10_prefix" = "xyes" ; then
Chris@69:          NE10_CFLAGS=""
Chris@69:       elif test "x$NE10_prefix" != "x" ; then
Chris@69:          NE10_CFLAGS="-I$NE10_prefix/include"
Chris@69:       elif test "x$prefix" != "xNONE"; then
Chris@69:          NE10_CFLAGS="-I$prefix/include"
Chris@69:       fi
Chris@69: 
Chris@69:       AC_MSG_CHECKING(for NE10)
Chris@69:       save_CFLAGS="$CFLAGS"; CFLAGS="$CFLAGS $NE10_CFLAGS"
Chris@69:       save_LIBS="$LIBS"; LIBS="$LIBS $NE10_LIBS $LIBM"
Chris@69:       AC_LINK_IFELSE(
Chris@69:          [
Chris@69:             AC_LANG_PROGRAM(
Chris@69:                [[#include <NE10_dsp.h>
Chris@69:                ]],
Chris@69:                [[
Chris@69:                   ne10_fft_cfg_float32_t cfg;
Chris@69:                   cfg = ne10_fft_alloc_c2c_float32_neon(480);
Chris@69:                ]]
Chris@69:             )
Chris@69:          ],[
Chris@69:             HAVE_ARM_NE10=1
Chris@69:             AC_MSG_RESULT([yes])
Chris@69:          ],[
Chris@69:             HAVE_ARM_NE10=0
Chris@69:             AC_MSG_RESULT([no])
Chris@69:             NE10_CFLAGS=""
Chris@69:             NE10_LIBS=""
Chris@69:          ]
Chris@69:       )
Chris@69:       CFLAGS="$save_CFLAGS"; LIBS="$save_LIBS"
Chris@69:       #Now we know if libNE10 is installed or not
Chris@69:       AS_IF([test x"$HAVE_ARM_NE10" = x"1"],
Chris@69:          [
Chris@69:             AC_DEFINE([HAVE_ARM_NE10], 1, [NE10 library is installed on host. Make sure it is on target!])
Chris@69:             AC_SUBST(HAVE_ARM_NE10)
Chris@69:             AC_SUBST(NE10_CFLAGS)
Chris@69:             AC_SUBST(NE10_LIBS)
Chris@69:          ]
Chris@69:       )
Chris@69:    ]
Chris@69: )
Chris@69: 
Chris@69: AS_IF([test x"$enable_intrinsics" = x"yes"],[
Chris@69:    intrinsics_support=""
Chris@69:    AS_CASE([$host_cpu],
Chris@69:    [arm*|aarch64*],
Chris@69:    [
Chris@69:       cpu_arm=yes
Chris@69:       OPUS_CHECK_INTRINSICS(
Chris@69:          [ARM Neon],
Chris@69:          [$ARM_NEON_INTR_CFLAGS],
Chris@69:          [OPUS_ARM_MAY_HAVE_NEON_INTR],
Chris@69:          [OPUS_ARM_PRESUME_NEON_INTR],
Chris@69:          [[#include <arm_neon.h>
Chris@69:          ]],
Chris@69:          [[
Chris@69:             static float32x4_t A0, A1, SUMM;
Chris@69:             SUMM = vmlaq_f32(SUMM, A0, A1);
Chris@69:             return (int)vgetq_lane_f32(SUMM, 0);
Chris@69:          ]]
Chris@69:       )
Chris@69:       AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON_INTR" = x"1" && test x"$OPUS_ARM_PRESUME_NEON_INTR" != x"1"],
Chris@69:           [
Chris@69:              OPUS_ARM_NEON_INTR_CFLAGS="$ARM_NEON_INTR_CFLAGS"
Chris@69:              AC_SUBST([OPUS_ARM_NEON_INTR_CFLAGS])
Chris@69:           ]
Chris@69:       )
Chris@69: 
Chris@69:       AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON_INTR" = x"1"],
Chris@69:       [
Chris@69:          AC_DEFINE([OPUS_ARM_MAY_HAVE_NEON_INTR], 1, [Compiler supports ARMv7/Aarch64 Neon Intrinsics])
Chris@69:          intrinsics_support="$intrinsics_support (NEON)"
Chris@69: 
Chris@69:          AS_IF([test x"$enable_rtcd" != x"no" && test x"$OPUS_ARM_PRESUME_NEON_INTR" != x"1"],
Chris@69:             [AS_IF([test x"$rtcd_support" = x"no"],
Chris@69:                [rtcd_support="ARM (NEON Intrinsics)"],
Chris@69:                [rtcd_support="$rtcd_support (NEON Intrinsics)"])])
Chris@69: 
Chris@69:          AS_IF([test x"$OPUS_ARM_PRESUME_NEON_INTR" = x"1"],
Chris@69:             [AC_DEFINE([OPUS_ARM_PRESUME_NEON_INTR], 1, [Define if binary requires NEON intrinsics support])])
Chris@69: 
Chris@69:          OPUS_PATH_NE10()
Chris@69:          AS_IF([test x"$NE10_LIBS" != x""],
Chris@69:          [
Chris@69:               intrinsics_support="$intrinsics_support (NE10)"
Chris@69:               AS_IF([test x"enable_rtcd" != x"" \
Chris@69:                && test x"$OPUS_ARM_PRESUME_NEON_INTR" != x"1"],
Chris@69:                  [rtcd_support="$rtcd_support (NE10)"])
Chris@69:          ])
Chris@69: 
Chris@69:          OPUS_CHECK_INTRINSICS(
Chris@69:             [Aarch64 Neon],
Chris@69:             [$ARM_NEON_INTR_CFLAGS],
Chris@69:             [OPUS_ARM_MAY_HAVE_AARCH64_NEON_INTR],
Chris@69:             [OPUS_ARM_PRESUME_AARCH64_NEON_INTR],
Chris@69:             [[#include <arm_neon.h>
Chris@69:             ]],
Chris@69:             [[
Chris@69:                static int32_t IN;
Chris@69:                static int16_t OUT;
Chris@69:                OUT = vqmovns_s32(IN);
Chris@69:             ]]
Chris@69:          )
Chris@69: 
Chris@69:          AS_IF([test x"$OPUS_ARM_PRESUME_AARCH64_NEON_INTR" = x"1"],
Chris@69:          [
Chris@69:             AC_DEFINE([OPUS_ARM_PRESUME_AARCH64_NEON_INTR], 1, [Define if binary requires Aarch64 Neon Intrinsics])
Chris@69:             intrinsics_support="$intrinsics_support (NEON [Aarch64])"
Chris@69:          ])
Chris@69: 
Chris@69:          AS_IF([test x"$intrinsics_support" = x""],
Chris@69:             [intrinsics_support=no],
Chris@69:             [intrinsics_support="ARM$intrinsics_support"])
Chris@69:       ],
Chris@69:       [
Chris@69:          AC_MSG_WARN([Compiler does not support ARM intrinsics])
Chris@69:          intrinsics_support=no
Chris@69:       ])
Chris@69:    ],
Chris@69:    [i?86|x86_64],
Chris@69:    [
Chris@69:       OPUS_CHECK_INTRINSICS(
Chris@69:          [SSE],
Chris@69:          [$X86_SSE_CFLAGS],
Chris@69:          [OPUS_X86_MAY_HAVE_SSE],
Chris@69:          [OPUS_X86_PRESUME_SSE],
Chris@69:          [[#include <xmmintrin.h>
Chris@69:            #include <time.h>
Chris@69:          ]],
Chris@69:          [[
Chris@69:              __m128 mtest;
Chris@69:              mtest = _mm_set1_ps((float)time(NULL));
Chris@69:              mtest = _mm_mul_ps(mtest, mtest);
Chris@69:              return _mm_cvtss_si32(mtest);
Chris@69:          ]]
Chris@69:       )
Chris@69:       AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE" = x"1" && test x"$OPUS_X86_PRESUME_SSE" != x"1"],
Chris@69:           [
Chris@69:              OPUS_X86_SSE_CFLAGS="$X86_SSE_CFLAGS"
Chris@69:              AC_SUBST([OPUS_X86_SSE_CFLAGS])
Chris@69:           ]
Chris@69:       )
Chris@69:       OPUS_CHECK_INTRINSICS(
Chris@69:          [SSE2],
Chris@69:          [$X86_SSE2_CFLAGS],
Chris@69:          [OPUS_X86_MAY_HAVE_SSE2],
Chris@69:          [OPUS_X86_PRESUME_SSE2],
Chris@69:          [[#include <emmintrin.h>
Chris@69:            #include <time.h>
Chris@69:          ]],
Chris@69:          [[
Chris@69:             __m128i mtest;
Chris@69:             mtest = _mm_set1_epi32((int)time(NULL));
Chris@69:             mtest = _mm_mul_epu32(mtest, mtest);
Chris@69:             return _mm_cvtsi128_si32(mtest);
Chris@69:          ]]
Chris@69:       )
Chris@69:       AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE2" = x"1" && test x"$OPUS_X86_PRESUME_SSE2" != x"1"],
Chris@69:           [
Chris@69:              OPUS_X86_SSE2_CFLAGS="$X86_SSE2_CFLAGS"
Chris@69:              AC_SUBST([OPUS_X86_SSE2_CFLAGS])
Chris@69:           ]
Chris@69:       )
Chris@69:       OPUS_CHECK_INTRINSICS(
Chris@69:          [SSE4.1],
Chris@69:          [$X86_SSE4_1_CFLAGS],
Chris@69:          [OPUS_X86_MAY_HAVE_SSE4_1],
Chris@69:          [OPUS_X86_PRESUME_SSE4_1],
Chris@69:          [[#include <smmintrin.h>
Chris@69:            #include <time.h>
Chris@69:          ]],
Chris@69:          [[
Chris@69:             __m128i mtest;
Chris@69:             mtest = _mm_set1_epi32((int)time(NULL));
Chris@69:             mtest = _mm_mul_epi32(mtest, mtest);
Chris@69:             return _mm_cvtsi128_si32(mtest);
Chris@69:          ]]
Chris@69:       )
Chris@69:       AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE4_1" = x"1" && test x"$OPUS_X86_PRESUME_SSE4_1" != x"1"],
Chris@69:           [
Chris@69:              OPUS_X86_SSE4_1_CFLAGS="$X86_SSE4_1_CFLAGS"
Chris@69:              AC_SUBST([OPUS_X86_SSE4_1_CFLAGS])
Chris@69:           ]
Chris@69:       )
Chris@69:       OPUS_CHECK_INTRINSICS(
Chris@69:          [AVX],
Chris@69:          [$X86_AVX_CFLAGS],
Chris@69:          [OPUS_X86_MAY_HAVE_AVX],
Chris@69:          [OPUS_X86_PRESUME_AVX],
Chris@69:          [[#include <immintrin.h>
Chris@69:            #include <time.h>
Chris@69:          ]],
Chris@69:          [[
Chris@69:              __m256 mtest;
Chris@69:              mtest = _mm256_set1_ps((float)time(NULL));
Chris@69:              mtest = _mm256_addsub_ps(mtest, mtest);
Chris@69:              return _mm_cvtss_si32(_mm256_extractf128_ps(mtest, 0));
Chris@69:          ]]
Chris@69:       )
Chris@69:       AS_IF([test x"$OPUS_X86_MAY_HAVE_AVX" = x"1" && test x"$OPUS_X86_PRESUME_AVX" != x"1"],
Chris@69:           [
Chris@69:              OPUS_X86_AVX_CFLAGS="$X86_AVX_CFLAGS"
Chris@69:              AC_SUBST([OPUS_X86_AVX_CFLAGS])
Chris@69:           ]
Chris@69:       )
Chris@69:          AS_IF([test x"$rtcd_support" = x"no"], [rtcd_support=""])
Chris@69:          AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE" = x"1"],
Chris@69:          [
Chris@69:             AC_DEFINE([OPUS_X86_MAY_HAVE_SSE], 1, [Compiler supports X86 SSE Intrinsics])
Chris@69:             intrinsics_support="$intrinsics_support SSE"
Chris@69: 
Chris@69:             AS_IF([test x"$OPUS_X86_PRESUME_SSE" = x"1"],
Chris@69:                [AC_DEFINE([OPUS_X86_PRESUME_SSE], 1, [Define if binary requires SSE intrinsics support])],
Chris@69:                [rtcd_support="$rtcd_support SSE"])
Chris@69:          ],
Chris@69:          [
Chris@69:             AC_MSG_WARN([Compiler does not support SSE intrinsics])
Chris@69:          ])
Chris@69: 
Chris@69:          AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE2" = x"1"],
Chris@69:          [
Chris@69:             AC_DEFINE([OPUS_X86_MAY_HAVE_SSE2], 1, [Compiler supports X86 SSE2 Intrinsics])
Chris@69:             intrinsics_support="$intrinsics_support SSE2"
Chris@69: 
Chris@69:             AS_IF([test x"$OPUS_X86_PRESUME_SSE2" = x"1"],
Chris@69:                [AC_DEFINE([OPUS_X86_PRESUME_SSE2], 1, [Define if binary requires SSE2 intrinsics support])],
Chris@69:                [rtcd_support="$rtcd_support SSE2"])
Chris@69:          ],
Chris@69:          [
Chris@69:             AC_MSG_WARN([Compiler does not support SSE2 intrinsics])
Chris@69:          ])
Chris@69: 
Chris@69:          AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE4_1" = x"1"],
Chris@69:          [
Chris@69:             AC_DEFINE([OPUS_X86_MAY_HAVE_SSE4_1], 1, [Compiler supports X86 SSE4.1 Intrinsics])
Chris@69:             intrinsics_support="$intrinsics_support SSE4.1"
Chris@69: 
Chris@69:             AS_IF([test x"$OPUS_X86_PRESUME_SSE4_1" = x"1"],
Chris@69:                [AC_DEFINE([OPUS_X86_PRESUME_SSE4_1], 1, [Define if binary requires SSE4.1 intrinsics support])],
Chris@69:                [rtcd_support="$rtcd_support SSE4.1"])
Chris@69:          ],
Chris@69:          [
Chris@69:             AC_MSG_WARN([Compiler does not support SSE4.1 intrinsics])
Chris@69:          ])
Chris@69:          AS_IF([test x"$OPUS_X86_MAY_HAVE_AVX" = x"1"],
Chris@69:          [
Chris@69:             AC_DEFINE([OPUS_X86_MAY_HAVE_AVX], 1, [Compiler supports X86 AVX Intrinsics])
Chris@69:             intrinsics_support="$intrinsics_support AVX"
Chris@69: 
Chris@69:             AS_IF([test x"$OPUS_X86_PRESUME_AVX" = x"1"],
Chris@69:                [AC_DEFINE([OPUS_X86_PRESUME_AVX], 1, [Define if binary requires AVX intrinsics support])],
Chris@69:                [rtcd_support="$rtcd_support AVX"])
Chris@69:          ],
Chris@69:          [
Chris@69:             AC_MSG_WARN([Compiler does not support AVX intrinsics])
Chris@69:          ])
Chris@69: 
Chris@69:          AS_IF([test x"$intrinsics_support" = x""],
Chris@69:             [intrinsics_support=no],
Chris@69:             [intrinsics_support="x86$intrinsics_support"]
Chris@69:          )
Chris@69:          AS_IF([test x"$rtcd_support" = x""],
Chris@69:             [rtcd_support=no],
Chris@69:             [rtcd_support="x86$rtcd_support"],
Chris@69:         )
Chris@69: 
Chris@69:     AS_IF([test x"$enable_rtcd" = x"yes" && test x"$rtcd_support" != x""],[
Chris@69:             get_cpuid_by_asm="no"
Chris@69:             AC_MSG_CHECKING([How to get X86 CPU Info])
Chris@69:             AC_LINK_IFELSE([AC_LANG_PROGRAM([[
Chris@69:                  #include <stdio.h>
Chris@69:             ]],[[
Chris@69:                  unsigned int CPUInfo0;
Chris@69:                  unsigned int CPUInfo1;
Chris@69:                  unsigned int CPUInfo2;
Chris@69:                  unsigned int CPUInfo3;
Chris@69:                  unsigned int InfoType;
Chris@69:                  __asm__ __volatile__ (
Chris@69:                  "cpuid":
Chris@69:                  "=a" (CPUInfo0),
Chris@69:                  "=b" (CPUInfo1),
Chris@69:                  "=c" (CPUInfo2),
Chris@69:                  "=d" (CPUInfo3) :
Chris@69:                  "a" (InfoType), "c" (0)
Chris@69:                 );
Chris@69:             ]])],
Chris@69:             [get_cpuid_by_asm="yes"
Chris@69:              AC_MSG_RESULT([Inline Assembly])
Chris@69:                  AC_DEFINE([CPU_INFO_BY_ASM], [1], [Get CPU Info by asm method])],
Chris@69:              [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
Chris@69:                  #include <cpuid.h>
Chris@69:             ]],[[
Chris@69:                  unsigned int CPUInfo0;
Chris@69:                  unsigned int CPUInfo1;
Chris@69:                  unsigned int CPUInfo2;
Chris@69:                  unsigned int CPUInfo3;
Chris@69:                  unsigned int InfoType;
Chris@69:                  __get_cpuid(InfoType, &CPUInfo0, &CPUInfo1, &CPUInfo2, &CPUInfo3);
Chris@69:             ]])],
Chris@69:             [AC_MSG_RESULT([C method])
Chris@69:                  AC_DEFINE([CPU_INFO_BY_C], [1], [Get CPU Info by c method])],
Chris@69:             [AC_MSG_ERROR([no supported Get CPU Info method, please disable run-time CPU capabilities detection or intrinsics])])])])
Chris@69:    ],
Chris@69:    [
Chris@69:       AC_MSG_WARN([No intrinsics support for your architecture])
Chris@69:       intrinsics_support="no"
Chris@69:    ])
Chris@69: ],
Chris@69: [
Chris@69:    intrinsics_support="no"
Chris@69: ])
Chris@69: 
Chris@69: AM_CONDITIONAL([CPU_ARM], [test "$cpu_arm" = "yes"])
Chris@69: AM_CONDITIONAL([HAVE_ARM_NEON_INTR],
Chris@69:     [test x"$OPUS_ARM_MAY_HAVE_NEON_INTR" = x"1"])
Chris@69: AM_CONDITIONAL([HAVE_ARM_NE10],
Chris@69:     [test x"$HAVE_ARM_NE10" = x"1"])
Chris@69: AM_CONDITIONAL([HAVE_SSE],
Chris@69:     [test x"$OPUS_X86_MAY_HAVE_SSE" = x"1"])
Chris@69: AM_CONDITIONAL([HAVE_SSE2],
Chris@69:     [test x"$OPUS_X86_MAY_HAVE_SSE2" = x"1"])
Chris@69: AM_CONDITIONAL([HAVE_SSE4_1],
Chris@69:     [test x"$OPUS_X86_MAY_HAVE_SSE4_1" = x"1"])
Chris@69: AM_CONDITIONAL([HAVE_AVX],
Chris@69:     [test x"$OPUS_X86_MAY_HAVE_AVX" = x"1"])
Chris@69: 
Chris@69: AS_IF([test x"$enable_rtcd" = x"yes"],[
Chris@69:     AS_IF([test x"$rtcd_support" != x"no"],[
Chris@69:         AC_DEFINE([OPUS_HAVE_RTCD], [1],
Chris@69:             [Use run-time CPU capabilities detection])
Chris@69:         OPUS_HAVE_RTCD=1
Chris@69:         AC_SUBST(OPUS_HAVE_RTCD)
Chris@69:     ])
Chris@69: ],[
Chris@69:     rtcd_support="disabled"
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([assertions],
Chris@69:     [AS_HELP_STRING([--enable-assertions],[enable additional software error checking])],,
Chris@69:     [enable_assertions=no])
Chris@69: 
Chris@69: AS_IF([test "$enable_assertions" = "yes"], [
Chris@69:   AC_DEFINE([ENABLE_ASSERTIONS], [1], [Assertions])
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([hardening],
Chris@69:     [AS_HELP_STRING([--disable-hardening],[disable run-time checks that are cheap and safe for use in production])],,
Chris@69:     [enable_hardening=yes])
Chris@69: 
Chris@69: AS_IF([test "$enable_hardening" = "yes"], [
Chris@69:   AC_DEFINE([ENABLE_HARDENING], [1], [Hardening])
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([fuzzing],
Chris@69: 	      [AS_HELP_STRING([--enable-fuzzing],[causes the encoder to make random decisions (do not use in production)])],,
Chris@69:     [enable_fuzzing=no])
Chris@69: 
Chris@69: AS_IF([test "$enable_fuzzing" = "yes"], [
Chris@69:   AC_DEFINE([FUZZING], [1], [Fuzzing])
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([check-asm],
Chris@69:     [AS_HELP_STRING([--enable-check-asm],
Chris@69:                     [enable bit-exactness checks between optimized and c implementations])],,
Chris@69:     [enable_check_asm=no])
Chris@69: 
Chris@69: AS_IF([test "$enable_check_asm" = "yes"], [
Chris@69:   AC_DEFINE([OPUS_CHECK_ASM], [1], [Run bit-exactness checks between optimized and c implementations])
Chris@69: ])
Chris@69: 
Chris@69: AC_ARG_ENABLE([doc],
Chris@69:     [AS_HELP_STRING([--disable-doc], [Do not build API documentation])],,
Chris@69:     [enable_doc=yes])
Chris@69: 
Chris@69: AS_IF([test "$enable_doc" = "yes"], [
Chris@69:   AC_CHECK_PROG(HAVE_DOXYGEN, [doxygen], [yes], [no])
Chris@69:   AC_CHECK_PROG(HAVE_DOT, [dot], [yes], [no])
Chris@69: ],[
Chris@69:   HAVE_DOXYGEN=no
Chris@69: ])
Chris@69: 
Chris@69: AM_CONDITIONAL([HAVE_DOXYGEN], [test "$HAVE_DOXYGEN" = "yes"])
Chris@69: 
Chris@69: AC_ARG_ENABLE([extra-programs],
Chris@69:     [AS_HELP_STRING([--disable-extra-programs], [Do not build extra programs (demo and tests)])],,
Chris@69:     [enable_extra_programs=yes])
Chris@69: 
Chris@69: AM_CONDITIONAL([EXTRA_PROGRAMS], [test "$enable_extra_programs" = "yes"])
Chris@69: 
Chris@69: 
Chris@69: AC_ARG_ENABLE([rfc8251],
Chris@69: 	      AS_HELP_STRING([--disable-rfc8251], [Disable bitstream fixes from RFC 8251]),,
Chris@69:   [enable_rfc8251=yes])
Chris@69: 
Chris@69: AS_IF([test "$enable_rfc8251" = "no"], [
Chris@69:        AC_DEFINE([DISABLE_UPDATE_DRAFT], [1], [Disable bitstream fixes from RFC 8251])
Chris@69: ])
Chris@69: 
Chris@69: 
Chris@69: saved_CFLAGS="$CFLAGS"
Chris@69: CFLAGS="$CFLAGS -fvisibility=hidden"
Chris@69: AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
Chris@69: AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])],
Chris@69:     [ AC_MSG_RESULT([yes]) ],
Chris@69:     [ AC_MSG_RESULT([no])
Chris@69:       CFLAGS="$saved_CFLAGS"
Chris@69:     ])
Chris@69: 
Chris@69: on_x86=no
Chris@69: case "$host_cpu" in
Chris@69: i[[3456]]86 | x86_64)
Chris@69:   on_x86=yes
Chris@69:   ;;
Chris@69: esac
Chris@69: 
Chris@69: on_windows=no
Chris@69: case $host in
Chris@69: *cygwin*|*mingw*)
Chris@69:   on_windows=yes
Chris@69:   ;;
Chris@69: esac
Chris@69: 
Chris@69: dnl Enable stack-protector-all only on x86 where it's well supported.
Chris@69: dnl on some platforms it causes crashes. Hopefully the OS's default's
Chris@69: dnl include this on platforms that work but have been missed here.
Chris@69: AC_ARG_ENABLE([stack-protector],
Chris@69:     [AS_HELP_STRING([--disable-stack-protector],[Disable compiler stack hardening])],,
Chris@69:     [
Chris@69:       AS_IF([test "$ac_cv_c_compiler_gnu" = "yes" && test "$on_x86" = "yes" && test "$on_windows" = "no"],
Chris@69:             [enable_stack_protector=yes],[enable_stack_protector=no])
Chris@69:     ])
Chris@69: 
Chris@69: AS_IF([test "$enable_stack_protector" = "yes"],
Chris@69:  [
Chris@69:   saved_CFLAGS="$CFLAGS"
Chris@69:   CFLAGS="$CFLAGS -fstack-protector-strong"
Chris@69:   AC_MSG_CHECKING([if ${CC} supports -fstack-protector-strong])
Chris@69:   AC_LINK_IFELSE([AC_LANG_PROGRAM([],[[char foo;]])],
Chris@69:     [ AC_MSG_RESULT([yes]) ],
Chris@69:     [
Chris@69:       AC_MSG_RESULT([no])
Chris@69:       enable_stack_protector=no
Chris@69:       CFLAGS="$saved_CFLAGS"
Chris@69:     ])
Chris@69:  ])
Chris@69: 
Chris@69: AS_IF([test x$ac_cv_c_compiler_gnu = xyes],
Chris@69:     [AX_ADD_FORTIFY_SOURCE]
Chris@69: )
Chris@69: 
Chris@69: CFLAGS="$CFLAGS -W"
Chris@69: 
Chris@69: warn_CFLAGS="-Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes"
Chris@69: saved_CFLAGS="$CFLAGS"
Chris@69: CFLAGS="$CFLAGS $warn_CFLAGS"
Chris@69: AC_MSG_CHECKING([if ${CC} supports ${warn_CFLAGS}])
Chris@69: AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])],
Chris@69:     [ AC_MSG_RESULT([yes]) ],
Chris@69:     [ AC_MSG_RESULT([no])
Chris@69:       CFLAGS="$saved_CFLAGS"
Chris@69:     ])
Chris@69: 
Chris@69: saved_LIBS="$LIBS"
Chris@69: LIBS="$LIBS $LIBM"
Chris@69: AC_CHECK_FUNCS([lrintf])
Chris@69: AC_CHECK_FUNCS([lrint])
Chris@69: LIBS="$saved_LIBS"
Chris@69: 
Chris@69: AC_CHECK_FUNCS([__malloc_hook])
Chris@69: 
Chris@69: AC_SUBST([PC_BUILD])
Chris@69: 
Chris@69: AC_CONFIG_FILES([
Chris@69:     Makefile
Chris@69:     opus.pc
Chris@69:     opus-uninstalled.pc
Chris@69:     celt/arm/armopts.s
Chris@69:     doc/Makefile
Chris@69:     doc/Doxyfile
Chris@69: ])
Chris@69: AC_CONFIG_HEADERS([config.h])
Chris@69: 
Chris@69: AC_OUTPUT
Chris@69: 
Chris@69: AC_MSG_NOTICE([
Chris@69: ------------------------------------------------------------------------
Chris@69:   $PACKAGE_NAME $PACKAGE_VERSION:  Automatic configuration OK.
Chris@69: 
Chris@69:     Compiler support:
Chris@69: 
Chris@69:       C99 var arrays: ................ ${has_var_arrays}
Chris@69:       C99 lrintf: .................... ${ac_cv_func_lrintf}
Chris@69:       Use alloca: .................... ${use_alloca}
Chris@69: 
Chris@69:     General configuration:
Chris@69: 
Chris@69:       Floating point support: ........ ${enable_float}
Chris@69:       Fast float approximations: ..... ${enable_float_approx}
Chris@69:       Fixed point debugging: ......... ${enable_fixed_point_debug}
Chris@69:       Inline Assembly Optimizations: . ${inline_optimization}
Chris@69:       External Assembly Optimizations: ${asm_optimization}
Chris@69:       Intrinsics Optimizations: ...... ${intrinsics_support}
Chris@69:       Run-time CPU detection: ........ ${rtcd_support}
Chris@69:       Custom modes: .................. ${enable_custom_modes}
Chris@69:       Assertion checking: ............ ${enable_assertions}
Chris@69:       Hardening: ..................... ${enable_hardening}
Chris@69:       Fuzzing: ....................... ${enable_fuzzing}
Chris@69:       Check ASM: ..................... ${enable_check_asm}
Chris@69: 
Chris@69:       API documentation: ............. ${enable_doc}
Chris@69:       Extra programs: ................ ${enable_extra_programs}
Chris@69: ------------------------------------------------------------------------
Chris@69: 
Chris@69:  Type "make; make install" to compile and install
Chris@69:  Type "make check" to run the test suite
Chris@69: ])
Chris@69: